Engine Controls - Tests W/codes - 3.3l & 3.8l Dodge Grand Caravan IV

INTRODUCTION

To properly diagnose and repair this vehicle, follow DIAGNOSTIC PROCEDURE under SELF-DIAGNOSTIC SYSTEM. If no Diagnostic Trouble Codes (DTC) are present and a no-start condition exists, proceed to NO-START DIAGNOSIS in BASIC DIAGNOSTIC PROCEDURES - CARAVAN, TOWN & COUNTRY, & VOYAGER article. If no DTCs are present and a driveability condition exists, proceed to the appropriate TROUBLE SHOOTING - NO CODES article for diagnosis by symptom (i.e., ROUGH IDLE, ENGINE STALLS, etc.).

SELF-DIAGNOSTIC SYSTEM

Note. Self-diagnostic tests are written specifically for Chrysler's Diagnostic Readout Box DRBIII® scan tool. A generic scan tool may not be capable of performing all necessary test functions.

ON-BOARD DIAGNOSTICS

Note. For more in-depth information on engine performance related systems and components, see THEORY & OPERATION - CARAVAN, TOWN & COUNTRY, & VOYAGER article.

The Powertrain Control Module (PCM) has been programmed to monitor many different circuits of the fuel injection system. This monitoring is called on-board diagnosis. Certain criteria or arming conditions must be met for a trouble code to be entered into the PCM memory. The criteria may be a range of engine RPM, engine temperature, and/or input voltage to the PCM. If a problem is sensed with a monitored circuit and all of the criteria or arming conditions are met, then a trouble code will be stored in the PCM. It is possible that a trouble code for a monitored circuit may not be entered into the PCM memory even though a malfunction has occurred. This may happen because one of the trouble code criteria have not been met. The PCM compares input signal voltages from each input device with specifications (the established high and low limits of the range) that are programmed into it for that device. If the input voltage is not within specifications and other trouble code criteria are met, a trouble code will be stored in the PCM memory. The On-Board Diagnostics have evolved to the second Generation of Diagnostics referred to as OBD-II/Euro Stage III OBD. These OBD-II/Euro Stage III OBD Diagnostics control the functions necessary to meet the requirements of California OBD-II, Federal OBD regulation and European regulation. These requirements specify the inclusion of a Malfunction Indicator Light (MIL). The purpose of the MIL is to inform the vehicle operator in the event of a malfunction of any emission system or component. MIL may also be referred to as CHECK ENGINE light. MIL is located on the instrument cluster and is represented by an engine symbol. When ignition is turned on, MIL should come on to verify bulb and circuit operation. If MIL does not turn on, diagnose MIL indicator. See INSTRUMENT CLUSTER under SYSTEM TESTS in the BODY DIAGNOSTIC PROCEDURES article in ACCESSORIES & EQUIPMENT.

If PCM detects an active engine misfire severe enough to cause catalytic converter damage, the MIL will immediately start flashing to warn driver of possible catalytic converter damage and a DTC will be stored. The PCM may turn off the MIL if malfunction is not detected during 3 consecutive trips, 3 consecutive engine misfire monitor tests or fuel system monitor tests. For additional information on good trips, see TRIP INDICATOR . For additional information on engine misfire monitor and fuel system monitor, see MONITORED CIRCUITS . PCM performs engine misfire and fuel system monitor tests within predetermined engine speed (RPM) and load operating conditions.

DTCs may only be retrieved for system diagnosis by using a scan tool. See RETRIEVING DIAGNOSTIC TROUBLE CODES . System malfunctions are identified as either hard failures or intermittent failures. For additional information on hard failures or intermittent failures, see HARD FAILURES or INTERMITTENT FAILURES .

Monitored Circuits

The PCM contains electronic circuit monitors that monitor fuel, vehicle emissions, engine and ignition system performance. Monitors use information from various sensor circuits for system monitoring. Monitors do not indicate a specific component failure, but do indicate an implied failure within a specified system, and that the problem must be diagnosed. If any monitor detects a problem affecting vehicle emissions, a Diagnostic Trouble Code (DTC) will be stored in PCM. The following monitors are used.

1. EGR Monitor
2. Engine Misfire Monitor
3. Fuel System Monitor
4. Oxygen Sensor Monitor
5. Oxygen Sensor Heater Monitor
6. Catalyst Monitor
7. EVAP System Leak Detection Monitor

After 3 good trips, the PCM will turn off the MIL. At that time, the PCM will automatically switch the trip counter to a warm-up cycle counter. The PCM will erase DTCs after 40 warm-up cycles (80 warm-up cycles for fuel system monitor and misfire monitor) if the recent malfunction does not reoccur in that time. For additional information on good trips and warm-up cycles, see TRIP INDICATOR .

Note. A warm-up cycle is defined as engine is started, an increase of 40°F in engine coolant temperature exists after engine is started and engine coolant temperature increases to at least 160°F.

Non-Monitored Circuits

PCM does not monitor all circuits, conditions and systems that could cause a malfunction or driveability problem. However, problems with these systems may cause PCM to store Diagnostic Trouble Codes (DTC) for other systems or components.

For example, a fuel pressure problem will not cause a DTC directly, but could cause a rich/lean condition or misfire which may cause PCM to store a DTC. The major non-monitored circuits are identified below.

1. Cylinder Compression
2. Excessive Oil Consumption
3. Exhaust System
4. Fuel Injector Mechanical Faults
5. Fuel Pressure
6. PCM Connector Engagement
7. PCM System Ground
8. Secondary Ignition System
9. Throttle Body Airflow
10. Vacuum Assist

Trip Indicator

The trip is essential for running monitors and turning off the Malfunction Indicator Light (MIL). A trip is defined as a set of vehicle operating conditions that must be met for a specific monitor to run. All trips begin with an ignition key cycle. Good Trip counters are, global good trip, fuel system good trip, misfire good trip and alternate good trip (appears as a global good trip on the DRBIII® scan tool).

1. Global Good Trip To increment a Global Good Trip, the oxygen sensor and catalyst efficiency monitors must have run and passed, and engine run time must be more than 2 minutes.
2. Fuel System Good Trip To count as a good trip (3 required) and turn off the MIL, the following conditions must be met. Engine must be in closed loop, must be operating in similar conditions window and short term multiplied by long term must be less than threshold value. NOTE: For more information on similar conditions window, see «SIMILAR CONDITIONS WINDOW»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__similar-conditions-window) .
3. Misfire Good Trip If operating in similar conditions window and 1000 engine revolutions have occurred with no misfires, the PCM will count one good trip (3 required) in order to turn off MIL.
4. Alternate Good Trip Alternate good trips are used in place of global good trips for comprehensive components and major monitors. If the Task Manager cannot run a global good trip because a component fault is stopping the monitor from running, it will attempt to count an alternate good trip. The Task Manager counts an alternate good trip for comprehensive components when 2 minutes of engine run time has passed and no other faults are present. The Task Manager counts an alternative good trip for a major monitor when the monitor runs and passes. Only the major monitor that failed needs to pass to count an alternate good trip.
5. Warm-Up Cycles Once the MIL has been turned off by the good trip counter, the PCM will automatically switch to a warm-up cycle counter that can be viewed by the DRBIII® scan tool. Warm-up cycles are used to clear DTCs and freeze frame data from PCM memory. Forty warm-up cycles are necessary to clear DTCs and freeze frame data. A warm-up cycle is defined as the engine is started, an increase of 40°F in engine coolant temperature exists after engine is started and engine coolant temperature reaches at least 160°F (71°C), and no further faults occur.

Similar Conditions Window

Similar conditions window data can be viewed by using the DRBIII® scan tool. The similar conditions window displays information about the engine operation during a monitor. Manifold absolute pressure (engine load) and engine RPM information is stored in this window when a failure occurs. There are 2 different similar conditions windows, fuel system and misfire.

Hard Failures

A diagnostic trouble code that comes back within one cycle of the ignition key is a hard code. This means that the defect is there every time the PCM checks that circuit or function. When it is not a hard code, an intermittent test must be performed. DTCs that are for OBDII/Euro Stage III OBD monitors will not set with just the ignition key on. Comparing these to non-emission DTCs, they will seem like an intermittent. These DTCs require a set of parameters to be performed (The DRBIII® scan tool pre-test screens will help with this for MONITOR DTCs), this is called a TRIP. All OBDII/Euro Stage III OBD DTCs will be set after one or in some cases two trip failures, and the MIL will be turned on. These DTCs require three successful, no failures, TRIPS to extinguish the MIL, followed by 40 warm-up cycles to erase the DTC.

Hard failures cause Malfunction Indicator Light (MIL) to illuminate and remain on until problem is repaired. This means the defect is there every time the PCM checks that circuit or function. If MIL light comes on and remains on during vehicle operation, cause of malfunction must be determined by retrieving Diagnostic Trouble Codes (DTC). See RETRIEVING DIAGNOSTIC TROUBLE CODES . If a sensor fails, PCM will use substitute value in its calculations to continue engine operation. In this condition, commonly known as limp-in mode, the vehicle runs but driveability will not be optimum.

Intermittent Failures

A diagnostic trouble code that is not there every time the PCM checks the circuit is an intermittent DTC. Most intermittent DTCs are caused by wiring or connector problems. Defects that come and go like this are the most difficult to diagnose; they must be looked for under specific conditions that cause them. The following checks may assist you in identifying a possible intermittent problem.

1. Visually inspect related wire harness connectors.
2. Look for broken, bent, pushed out, or corroded terminals.
3. Visually inspect the related harnesses.
4. Look for chafed, pierced, or partially broken wire.
5. Refer to any technical service bulletins that may apply.
6. Use the DRBIII® scan tool data recorder or co-pilot.

Intermittent failures may cause Malfunction Indicator Light (MIL) to flicker or illuminate and go out after intermittent failure goes away. However, the corresponding Diagnostic Trouble Code (DTC) will be retained in PCM memory. If related failure does not reoccur within 40 warm-up cycles, related DTC will be erased from PCM memory. Most intermittent failures are caused by a sensor, electrical connector or wiring related problems. See INTERMITTENTS in appropriate TROUBLE SHOOTING - NO CODES article.

SERVICE PRECAUTIONS

Before continuing with system diagnosis, the following precautions must be followed.

1. Set the parking brake and block the wheels before testing or repairing the vehicle. It is especially important to block the wheels on front-wheel drive vehicles, the parking brake does not hold the drive wheels.
2. When servicing a vehicle, always wear eye protection, and remove any metal jewelry such as watchbands or bracelets that might make an inadvertent electrical contact.
3. Make sure the vehicle being tested has a fully charged battery. If it does not, false diagnostic codes or error messages may occur.
4. When servicing Sub Assemblies, some components of the powertrain system are intended to be serviced in assembly only. Attempting to remove or repair certain system subcomponents may result in personal injury and/or improper system operation. Only those components with approved repair and installation procedures should be serviced.
5. Before performing any testing procedures, check for any related technical service bulletins.
6. Ensure fuel pressure is released before removing fuel line or fittings, as fuel system is under pressure and may cause personal injury. See «FUEL SYSTEM PRESSURE RELEASE»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__fuel-system-pressure-release) .
7. When using DIAGNOSTIC TESTS for diagnosis, do not skip any steps, or incorrect diagnosis may result. When instructed to disconnect any connector, check that the connector is clean and in good condition after disconnecting connector. Repair or clean connector if necessary. Always perform indicated verification test after repairs are made.
8. When using a jumper wire, ensure either the jumper wire or the circuit is fuse-protected.
9. Before disconnecting any control module harness connector, ensure ignition is off before removing connector.
10. Do not use 12-volt test light when checking 5-volt or 8-volt supply circuit, bus circuits, PCI bus circuit, camshaft position sensor signal circuit, crankshaft position sensor signal circuit, oxygen sensor signal circuit or vehicle speed sensor signal circuit or Powertrain Control Module (PCM) may be damaged.
11. When checking voltage or continuity at any control module, probe control module harness connector from pin side. Do not backprobe harness connector unless instructed to in test procedure. Do not probe wires through the insulation.
12. Do not cause short circuits when performing electrical tests. This will set additional Diagnostic Trouble Codes (DTC), making diagnosis of original problem more difficult.
13. Use specified test equipment when performing electrical tests.
14. Do not prolong testing of fuel injectors or engine may hydrostatically lock.
15. When replacing Transmission Control Module (TCM), pinion factor and shift quality quick learn procedure should be performed. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION.
16. If PCM is replaced, the correct vehicle mileage and Vehicle Identification Number (VIN) must be programmed into PCM to prevent Diagnostic Trouble Codes (DTC) from being stored in Controller Anti-Lock Brake (CAB) module and Air Bag Control Module (ACM). See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .
17. On models equipped with a Sentry Key Immobilizer Module (SKIM), if PCM is replaced, the secret key data must also be updated to enable engine starting. To update secret key data, see «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .
18. Road Test, some complaints will require a test drive as part of the repair verification procedure. The purpose of the test drive is to try to duplicate the diagnostic code or symptom condition.

DRBIII® Scan Tool Safety Information

Follow the vehicle manufacturer's service specifications at all times.

1. Do not use the DRBIII® scan tool if it has been damaged.
2. Do not use the test leads if the insulation is damaged or if metal is exposed.
3. To avoid electrical shock, do not touch the test leads, tips, or the circuit being tested.
4. Choose the proper range and function for the measurement. Do not try voltage or current measurements that may exceed the rated capacity.
5. Do not exceed the limits shown in the table below. See «DRBIII® SCAN TOOL LIMITS»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) table.
6. Voltage between any terminal and ground must not exceed 500 volts DC or 500 volts peak AC.
7. Use caution when measuring voltage above 25 volts DC or 25 volts AC.
8. The circuit being tested must be protected by a 10-amp fuse or circuit breaker.
9. Use the low current shunt to measure circuits up to 10 amps. Use the high current clamp to measure circuits exceeding 10 amps.
10. When testing for the presence of voltage or current, make sure the meter is functioning correctly. Take a reading of a known voltage or current before accepting a zero reading.
11. When measuring current, connect the meter in series with the load.
12. Disconnect the live test lead before disconnecting the common test lead.
13. When using the meter function, keep the DRBIII® scan tool away from spark plug or coil wires to avoid measuring error from outside interference.

DRBIII® SCAN TOOL LIMITS

DIAGNOSTIC PROCEDURE

The procedures contained in this article include specifications, instructions and graphics needed to diagnose PCM powertrain system. The diagnostics are based on the failure condition or symptom being present at the time of diagnosis. Use the following recommendations

1. First make sure the DRBIII® is communicating with the appropriate modules; i.e., if the DRBIII® displays a No Response condition, you must diagnose the condition first before proceeding. See appropriate «BASIC DIAGNOSTIC PROCEDURES - CARAVAN, TOWN & COUNTRY, & VOYAGER»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-basic-diagnostic-procedures) article (no response with a no-start condition) or the «BODY DIAGNOSTIC PROCEDURES»(/dodge/grand-caravan/iv-2000-2007/remont/collisionavoidance/#body-diagnostic-procedures) article in ACCESSORIES & EQUIPMENT (all other no response conditions).
2. Using DRBIII® scan tool read Diagnostic Trouble Codes (DTC). See «RETRIEVING DIAGNOSTIC TROUBLE CODES»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .
3. If no DTCs are present, identify the customer complaint and diagnose by symptom. See appropriate TROUBLE SHOOTING - NO CODES article.
4. If any DTCs are present, perform the appropriate diagnostic test. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__diagnostic-trouble-code-definitions) .

Using Scan Tool

1. Turn ignition off. Connect scan tool to Data Link Connector (DLC), located under left side of instrument panel. (Scheme 5) Turn ignition on. Access the "Read Fault" screen. Using the scan tool manufacturer's instructions, read and record DTC (generic scan tool) or DTC message (DRBIII® scan tool), and freeze frame data.
2. If scan tool will not power up, check for loose cable connections or bad cable. If cable connections and cable are okay, measure voltage at DLC power terminal No. 16 (Pink wire). Voltage should be at least 11 volts. If voltage is not as specified, check wiring circuit and fuse No. 5 (10-amp) in junction block. The junction block is located in left front kick panel. Repair wiring or replace fuse as necessary.
3. If scan tool displays USER-REQUESTED COLD BOOT error or USER-REQUESTED WARM BOOT error, or any other error message, record entire displayed error message and follow the scan tool manufacturer's instructions.
4. If the scan tool displays a bus failure error message, this indicates a scan tool failure or a bus circuit failure. To diagnose and repair bus circuit failure, see the «BODY DIAGNOSTIC PROCEDURES»(/dodge/grand-caravan/iv-2000-2007/remont/collisionavoidance/#body-diagnostic-procedures) article in ACCESSORIES & EQUIPMENT.
5. If any DTCs are displayed, perform appropriate diagnostic test. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__diagnostic-trouble-code-definitions). After repair is complete, clear DTCs from Powertrain Control Module (PCM) memory and perform appropriate verification test. Verification tests are located at the end of the diagnostic tests. If no DTCs are displayed, go to one of the following. For starting or driveability problems, go to appropriate TROUBLE SHOOTING - NO CODES article for diagnosis by symptom. For speed control problems and servicing information, refer to appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT. For charging system problems, refer to appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS. For transmission electronic controls system problems, refer to appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.

CLEARING DIAGNOSTIC TROUBLE CODES

Note. Clearing Diagnostic Trouble Codes (DTC) with a scan tool will also erase all OBD-II monitor data. This includes all counter information for warm-up cycles, trips and freeze frame data.

Turn ignition off. Connect scan tool to Data Link Connector (DLC), located under left side of instrument panel. (Scheme 5) Turn ignition on. Using screen prompts on scan tool, erase DTCs from Powertrain Control Module (PCM).

Self-Erasure

After 3 good trips, PCM will turn off the MIL. At that time, the PCM will automatically switch the trip counter to a warm-up cycle counter. The PCM will erase DTCs after 40 warm-up cycles if the recent malfunction does not reoccur in that time. For additional information on good trips and warm-up cycles, see TRIP INDICATOR under ON-BOARD DIAGNOSTICS.

PCM LOCATION

Powertrain control module is located on left side of engine compartment. (Scheme 20)

INTERMITTENT CONDITION

Note. The conditions that set the DTC are not present at this time. The following list may help in identifying the intermittent condition.

Refer to any Technical Service Bulletins (TSBs) that may apply. Review the DRBIII® scan tool Freeze Frame information. If possible, try to duplicate the conditions under which the DTC set. With the engine running at normal operating temperature, monitor the DRBIII® scan tool parameters related to the DTC while wiggling the wire harness. Look for parameter values to change and/or a DTC to set. Visually inspect the related wire harness. Look for any chafed, pierced, pinched, partially broken wires and broken, bent, pushed out, or corroded terminals. Inspect and clean all powertrain control module, engine, and chassis grounds that related to the DTC set. If numerous trouble codes were set, use a wire schematic to help you find any common ground or supply circuits For any relay DTCs, actuate the relay with the DRBIII® scan tool and wiggle the related wire harness to try to interrupt the actuation. For intermittent Evaporative Emission trouble codes perform a visual and physical inspection of the related parts including hoses and the Fuel Filler cap. A co-pilot, data recording, and/or lab scope should be used to help diagnose intermittent conditions. Use the DRBIII® scan tool to perform a System Test if one applies to failing component. Were any problems found during the above inspections? If yes, repair as necessary, then perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly. If no, the test is complete.

FUEL SYSTEM PRESSURE RELEASE

1. Turn ignition off. Remove fuel pump relay from Power Distribution Center (PDC). PDC is located in engine compartment, next to air cleaner.
2. Start engine and allow engine to idle until engine stalls. Attempt restarting engine until engine will no longer run. Turn ignition off. Remove fuel tank filler cap from fuel tank to release any pressure from fuel tank.
3. Fuel system components may now be serviced. Install fuel tank filler cap and fuel pump relay once fuel system components are serviced.
4. Diagnostic Trouble Code (DTC) may have been stored in Powertrain Control Module (PCM) due to the removal of fuel pump relay. For clearing DTCs from PCM, see «CLEARING DIAGNOSTIC TROUBLE CODES»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__clearing-diagnostic-trouble-codes) under SELF-DIAGNOSTIC SYSTEM.

POWERTRAIN CONTROL MODULE

Note. Before replacing the Powertrain Control Module (PCM) for a failed driver, control circuit or ground circuit, be sure to check the related component/circuit integrity, for failures not detected due to a double fault in the circuit. Most PCM driver/control circuit failures are caused by internal component failures (i.e. relay and solenoids) and shorted circuits (i.e. pull-ups, drivers and switched circuits). These failures are difficult to detect when a double fault has occurred and only one DTC has set.

Note. If replacing both PCM and SKIM at the same time, first program PCM, then program SKIM. Replace all ignition keys and program them to new SKIM.

Programming PCM

The SKIS Secret Key is an ID code that is unique to each SKIM. This code is programmed and stored in the SKIM, PCM and transponder chip (ignition keys). When replacing the PCM it is necessary to program the secret key into the new PCM using the DRBIII® scan tool. Perform the following steps to program the secret key into the PCM.

1. Connect scan tool to Data Link Connector (DLC), located under left side of instrument panel. (Scheme 5)
2. Turn the ignition switch on (transmission in park/neutral).
3. Using scan tool, select THEFT ALARM, SKIM, then MISCELLANEOUS.
4. Select PCM REPLACED (GAS ENGINE).
5. Enter secured access mode by entering the vehicle four-digit PIN.
6. Select ENTER to update PCM VIN.
7. Press ENTER to transfer the secret key (the SKIM will send the secret key to the PCM).
8. Press Page Back to get to the Select System menu and select. ENGINE, MISCELLANEOUS, and SRI MEMORY CHECK.
9. The DRBIII® scan tool will ask, Is odometer reading between XX and XX? Select the YES or NO button on the DRBIII® scan tool. If NO is selected, the DRBIII® scan tool will read, Enter odometer Reading From IP odometer. Enter odometer reading from instrument panel and press ENTER.

Programming SKIM

1. Connect scan tool to Data Link Connector (DLC), located under left side of instrument panel. (Scheme 5) Using scan tool, select THEFT ALARM, SKIM then MISC. Select PCM REPLACED. Obtain 4-digit Personal Identification Number (PIN) from vehicle owner or manufacturer.
2. Enter secured access mode by entering PIN code for vehicle. Select COUNTRY CODE. Enter correct country. Select YES to update VIN. SKIM will learn VIN from Powertrain Control Module (PCM). Press ENTER to transfer secret key data from PCM to SKIM. Program ignition keys to SKIM.

Programming Ignition Keys To SKIM

1. Connect scan tool to Data Link Connector (DLC), located under left side of instrument panel. (Scheme 5) Using scan tool, select THEFT ALARM, SKIM then MISC. Select PROGRAM IGNITION KEYS. Obtain 4-digit Personal Identification Number (PIN) from vehicle owner or manufacturer.
2. Enter secured access mode by entering PIN code for vehicle. Obtain ignition keys to be programmed from customer. Select MISC, then ERASE ALL CURRENT IGN KEYS. Program all ignition keys by following instructions on scan tool.

Programming Unsuccessful

If ignition key programming is unsuccessful, the DRBIII® scan tool will display one of the following messages.

1. Programming Not Attempted The DRBIII® scan tool attempts to read the programmed key status and there are no keys programmed into SKIM memory.
2. Programming Key Failed Possibly used key from wrong vehicle. SKIM is unable to program key due to one of the following. Faulty ignition key transponder. Ignition key is programmed to another vehicle.
3. Keys Already Learned, Programming Not Done SKIM transponder ID memory is full. Obtain ignition keys to be programmed from customer (8 keys maximum). Using the DRBIII® scan tool, erase all ignition keys by selecting MISCELLANEOUS and ERASE ALL CURRENT IGN. KEYS. Program all ignition keys.
4. Learned Key In Ignition Ignition key transponder ID is currently programmed in SKIM memory.

DRIVE CYCLES

Manufacturer does not provide a specific drive cycle to run all the monitors. Performing Powertrain Verification Test VER-5 will run most of the monitors. See POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS. Verification tests are normally referred to after performing a code related diagnostic test. To run all the monitors, it may be necessary to perform more than one powertrain verification test. See appropriate POWERTRAIN VERIFICATION TEST under VERIFICATION TESTS.

SUMMARY

If no Diagnostic Trouble Codes (DTC) are present and a no-start condition exists, proceed to NO-START DIAGNOSIS in BASIC DIAGNOSTIC PROCEDURES - CARAVAN, TOWN & COUNTRY, & VOYAGER article. If no DTCs are present and a driveability condition exists, proceed to appropriate TROUBLE SHOOTING - NO CODES article for diagnosis by symptom (i.e., ROUGH IDLE, ENGINE STALLS, etc.).

DIAGNOSTIC TROUBLE CODE DEFINITIONS

DIAGNOSTIC TROUBLE CODE MESSAGES & CODES

COMPONENT LOCATIONS

Note. (Scheme 1)- (Scheme 25) for component locations. There are some duplicate component views.

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CONNECTOR IDENTIFICATION

Note. (Scheme 26)- (Scheme 72) for connector identification.

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DIAGNOSTIC TESTS

Note. Before performing any test procedures, check for any related technical service bulletins.

DTC P0106: BAROMETRIC PRESSURE OUT OF RANGE

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Monitored & Set Conditions

Manifold Absolute Pressure (MAP) sensor circuit is monitored with ignition on, no Cam or Crank signal within 75 milliseconds and engine speed less than 250 RPM, battery voltage greater then 10.4 volts. DTC will set if Powertrain Control Module (PCM) senses MAP sensor voltage is less than 2.196 volts, but greater than 0.0392 volt for 300 milliseconds.

Possible Causes

1. MAP Sensor Voltage Below 2.2 Volts
2. (F855) 5-Volt Supply Circuit Shorted To Voltage
3. (F855) 5-Volt Supply Circuit Shorted To Ground
4. (F855) 5-Volt Supply Circuit Open
5. (K1) MAP Sensor Signal Circuit Open
6. (K1) MAP Sensor Signal Circuit Shorted To Ground
7. (K1) MAP Sensor Signal Circuit Shorted To (K900) Sensor Ground
8. MAP Sensor Internal Failure
9. PCM

Testing

1. Turn the ignition on (do not start engine). With the DRBIII® scan tool, read the MAP sensor voltage. Is the voltage below 2.2 volts? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the MAP sensor harness connector. Turn the ignition on. Measure the voltage of the (F855) 5-volt supply circuit in the MAP sensor harness connector. Is the voltage 4.5-5.2 volts? If yes, go to next step. If no, go to step 7 .
3. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K1) MAP sensor signal circuit between the MAP sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (K1) MAP sensor signal circuit.
4. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K1) MAP sensor signal circuit in the MAP sensor harness connector to ground. Is the resistance below 100 ohms? If yes, repair the short to ground in the (K1) MAP sensor signal circuit. If no, go to next step.
5. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K1) MAP sensor signal circuit in the MAP sensor harness connector to (K900) sensor ground. Is the resistance below 100 ohms? If yes, repair the short to (K900) sensor ground in the (K1) MAP sensor signal circuit. If no, go to next step.
6. Turn the ignition off. Disconnect the MAP sensor harness connector. Turn the ignition on. With the DRBIII® scan tool, monitor the MAP sensor voltage. Is the voltage above 2.2 volts? If yes, replace the MAP sensor. If no, go to 10 .
7. Turn the ignition off. Disconnect the MAP sensor harness connector. Reconnect PCM connectors. Turn the ignition on. Measure the voltage of the (F855) 5-volt supply circuit in the MAP sensor harness connector. Is the voltage above 5.2 volts? If yes, repair the to battery voltage in the (F855) 5-volt supply circuit. If no, go to next step.
8. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (F855) 5-volt supply circuit in the MAP sensor harness connector to ground. Is the resistance below 100 ohms? If yes, repair the short to ground in the (F855) 5-volt supply circuit. If no, go to next step.
9. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (F855) 5-volt supply circuit between the MAP sensor harness connector and the PCM harness connector. Is the resistance below 5 ohms? If yes, go to next step. If no, repair the open in the (F855) 5-volt supply circuit.
10. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0107: MAP SENSOR VOLTAGE TOO LOW

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Manifold Absolute Pressure (MAP) sensor circuit is monitored with engine speed at 600-3500 RPM, Throttle Position (TP) sensor voltage less than 1.2 volts and battery voltage greater than 10.4 volts. DTC will set if Powertrain Control Module (PCM) senses MAP sensor voltage is less than 0.0392 volt for 1.7 seconds.

1. MAP Sensor Voltage Below 0.04 Volt
2. (F855) 5-Volt Supply Circuit Shorted To Ground
3. (F855) 5-Volt Supply Circuit Open
4. MAP Sensor Internal Failure
5. (K1) MAP Sensor Signal Circuit Shorted To Ground
6. (K1) MAP Sensor Signal Circuit Shorted To (K900) Sensor Ground Circuit
7. PCM

1. Turn the ignition on (do not start the engine). With the DRBIII® scan tool, read the MAP sensor voltage. Is the voltage below 1.2 volts? If yes, go to step 3 . If no, go to next step.
2. Start the engine. With the DRBIII® scan tool, read the MAP sensor voltage. Is the voltage below 0.04 volt? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
3. Turn the ignition off. Disconnect the MAP sensor harness connector. Turn the ignition on. Measure the voltage of the (F855) 5-volt supply circuit at the MAP sensor harness connector. Is the voltage 4.5-5.2 volts. If yes, go to next step. If no, go to step 7 .
4. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K1) MAP sensor signal circuit between the MAP sensor harness connector and ground. Is the resistance below 100 ohms? If yes, repair the short to ground in the (K1) MAP sensor signal circuit. If no, go to next step.
5. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K1) MAP sensor signal circuit and the (K900) sensor ground circuit in the MAP sensor harness connector. Is the resistance below 100 ohms? If yes, repair the short to the (K900) sensor ground circuit in the (K1) MAP sensor signal circuit. If no, go to step 9 .
6. Turn the ignition off. Disconnect the MAP sensor harness connector. Turn the ignition on. With the DRBIII® scan tool, monitor the MAP sensor voltage. Is the voltage above 1.2 volts? If yes, replace the MAP sensor. If no, go to next step.
7. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (F855) 5-volt supply circuit in the Map sensor harness connector to ground. Is the resistance below 100 ohms? If yes, repair the short to ground in the (F855) 5-volt supply circuit. If no, go to next step.
8. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (F855) 5-volt supply circuit between the MAP sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the (F855) 5-volt supply circuit.
9. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0108: MAP SENSOR VOLTAGE TOO HIGH

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Manifold Absolute Pressure (MAP) sensor circuit is monitored with engine speed at 600-3500 RPM, Throttle Position (TP) sensor voltage less than 1.2 volts for greater that 1.7 seconds and battery voltage greater than 10.4 volts. DTC will set when MAP sensor voltage is greater than 4.96 volts.

1. MAP Sensor Voltage Above 4.6 Volts
2. (K1) MAP Sensor Signal Circuit Shorted To (F855) 5-Volt Supply Circuit
3. (K1) MAP Sensor Signal Circuit Shorted To Battery Voltage
4. (K1) MAP Sensor Signal Circuit Open
5. (K900) Sensor Ground Circuit Open
6. MAP Sensor Internal Failure
7. PCM

1. Start the engine. With the DRBIII® scan tool, read the MAP sensor voltage. Is the voltage above 4.6 volts? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the Powertrain Control Module (PCM) harness connector. Measure the resistance between the (K1) MAP sensor signal circuit and the (F855) 5-volt supply circuit in the MAP sensor harness connector. Is the resistance below 100 ohms? If yes, repair the short to (F855) 5-volt supply circuit in the (K1) MAP sensor signal circuit. If no, go to next step.
3. Turn the ignition off. Disconnect the MAP sensor harness connector. Reconnect PCM connectors. Turn the ignition on. Measure the voltage of the (K1) MAP sensor signal circuit in the MAP sensor harness connector. Is the voltage above 5.2 volts? If yes, repair the short to battery voltage in the (K1) MAP sensor signal circuit. If no, go to next step.
4. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K1) MAP sensor signal circuit between the MAP sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the MAP sensor signal circuit.
5. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K900) sensor ground circuit between the MAP sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the (K900) sensor ground circuit.
6. Turn the ignition off. Disconnect the MAP sensor harness connector. Reconnect PCM connectors. Connect a jumper wire between the (K1) MAP sensor signal circuit and the (K900) MAP sensor ground circuit. With the DRBIII® scan tool, monitor the MAP sensor voltage. Turn the ignition on. Is the voltage below 1.0 volt? If yes, replace the MAP sensor. If no, go to next step.
7. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0111: INTAKE AIR TEMP SENSOR PERFORMANCE

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Intake Air Temperature (IAT) sensor circuit is monitored with ignition on, engine coolant temperature greater than 160°F (71°C) and no inlet air temperature sensor faults present. DTC will set after 5 warm-up cycles, engine coolant temperature increases from 40°F to 160°F or more, odometer mileage has increased 196.6 miles, and inlet air temperature has increased less than 5.4°F (3°C) change in temperature. This is a two-trip fault.

Note. Inlet Air Temperature sensor may also be referred to as Intake Air Temperature sensor.

1. Good Trip Equal To Zero
2. IAT Sensor Voltage Below 1.0 Volt
3. High Resistance In The (K900) Sensor Ground Circuit
4. High Resistance In The (K21) IAT Sensor Signal Circuit Voltage Drop
5. PCM

Note. If DTC P1192 or P1193 are also present, diagnose those DTCs first. See DTC P1192: INLET AIR TEMP SENSOR VOLTAGE LOW or DTC P1193: INLET AIR TEMP SENSOR VOLTAGE HIGH .

1. Turn ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM. NOTE: Inlet Air Temperature sensor may also be referred to as Intake Air Temperature sensor.
2. Turn the ignition off. Disconnect the Inlet Air Temperature (IAT) sensor harness connector. Turn ignition on. With the DRBIII® scan tool, read the IAT voltage. Is the voltage above 4.6 volts? If yes, go to next step. If no, go to step 4 .
3. Turn the ignition off. Disconnect the IAT sensor harness connector. Using a jumper wire, jumper across the IAT sensor harness connector. Turn ignition on. With the DRBIII® scan tool, read the IAT voltage. Is the voltage below 1.0 volt? If yes, replace the IAT sensor. If no, go to next step.
4. Backprobe between the (K900) sensor ground circuit at the IAT sensor harness connector and Powertrain Control Module (PCM) harness connector. Start the engine. Allow the engine to idle. Is the voltage below 0.10 volt? If yes, go to next step. If no, repair the high resistance in the (K900) sensor ground circuit.
5. Backprobe between the (K21) IAT sensor signal circuit at the IAT sensor harness connector and PCM harness connector. Start the engine. Allow the engine to idle. Is the voltage below 0.10 volt? If yes, go to next step. If no, repair the high resistance in the (K21) IAT sensor signal circuit.
6. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0117: ECT SENSOR VOLTAGE TOO LOW

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Engine Coolant Temperature (ECT) sensor circuit is monitored with ignition on and battery voltage greater than 10 volts. DTC will set if ECT sensor circuit voltage at Powertrain Control Module (PCM) is less than 0.5 volt for greater than 2.6 seconds.

1. ECT Sensor Voltage Is Below 1.0 Volt
2. ECT Sensor Internal Failure
3. (K2) ECT Sensor Signal Shorted To Ground
4. (K2) ECT Sensor Signal Shorted To (K900) Sensor Ground Circuit
5. PCM

1. Turn the ignition on. With the DRBIII® scan tool, read the ECT voltage. Is the voltage below 1.0 volt? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn ignition off. Disconnect ECT sensor harness connector. Turn the ignition on. With the DRBIII® scan tool, read ECT voltage. Is the voltage above 1.0 volt? If yes, replace the ECT sensor. If no, go to next step.
3. Turn ignition off. Disconnect the ECT sensor harness connector. Disconnect PCM harness connectors. Measure the resistance of the (K2) ECT sensor signal circuit in the ECT sensor harness connector to ground. Is the resistance below 100 ohms? If yes, repair the ECT sensor signal circuit for a short to ground. If no, go to next step.
4. Turn the ignition off. Disconnect the ECT sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance between the (K2) ECT sensor signal circuit and the (K900) sensor ground circuit in the ECT sensor harness connector. Is the resistance below 100 ohms? If yes, repair the (K2) ECT sensor signal circuit for a short to the (K900) sensor ground circuit. If no, go to next step.
5. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0118: ECT SENSOR VOLTAGE TOO HIGH

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Engine Coolant Temperature (ECT) sensor circuit is monitored with ignition on and battery voltage greater than 10.4 volts. DTC will set if ECT sensor voltage at the Powertrain Control Module (PCM) is greater than 4.96 volts for greater than 2.6 seconds.

1. ECT Sensor Voltage Above 4.6 Volts
2. ECT Sensor Internal Failure
3. (K2) ECT Sensor Signal Circuit Shorted To Battery Voltage
4. (K2) ECT Sensor Signal Circuit Open
5. (K900) Sensor Ground Circuit Open
6. PCM

1. Turn ignition on. With the DRBIII® scan tool, read ECT voltage. Is the ECT voltage above 4.6 volts? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the ECT sensor harness connector. Turn the ignition on. Measure the voltage of the (K2) ECT sensor signal circuit in the ECT sensor harness connector. Is the voltage above 5.2 volts? If yes, repair the ECT sensor signal circuit for a short to battery voltage. If no, go to next step.
3. Turn the ignition off. Disconnect the ECT sensor harness connector. Connect a jumper wire between the (K2) ECT sensor signal circuit and the (K900) sensor ground circuit in the ECT harness connector. Turn the ignition on. With the DRBIII® scan tool, read the ECT voltage. Is the voltage below 1.0 volt? If yes, replace the ECT sensor. If no, go to next step.
4. Turn the ignition off. Disconnect the ECT sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K2) ECT sensor signal circuit between the ECT sensor harness connector to the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (K2) ECT sensor signal circuit for an open.
5. Turn the ignition off. Disconnect the ECT sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K900) sensor ground circuit between the ECT sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (K900) sensor ground circuit for an open.
6. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0121: TPS VOLTAGE DOES NOT AGREE WITH MAP

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Throttle Position (TP) sensor circuit is monitored with engine running and no Manifold Absolute Pressure (MAP) sensor or TP sensor DTCs are set. When manifold vacuum is low, TP sensor voltage should be high. When manifold vacuum is high, TP sensor voltage should be low. DTC will set if MAP sensor voltage does not respond to TP sensor voltage change within 4 seconds.

1. Good Trip Equal To Zero
2. High Resistance In (F855) 5-Volt Supply Circuit
3. (F855) 5-Volt Supply Circuit Shorted To Ground
4. MAP Sensor
5. High Resistance In The (K1) MAP Sensor Signal Circuit
6. (K1) MAP Sensor Signal Circuit Shorted To Ground
7. High Resistance In (K900) Sensor Ground Circuit
8. Throttle Position Sensor Operation
9. High Resistance In 5-Volt Supply Circuit
10. (F855) 5-Volt Supply Circuit Shorted To Ground
11. Throttle Position Sensor
12. High Resistance In (K22) TP Sensor Signal Circuit
13. (K22) TP Sensor Signal Circuit Shorted To Ground
14. High Resistance In The (K900) Sensor Ground Circuit
15. PCM

Note. Diagnose any TP sensor or MAP sensor DTCs first before continuing. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If the DTC P0500: No Vehicle Speed Signal is set along with this DTC, refer to the P0500 diagnostics before continuing. See DTC P0500: NO VEHICLE SPEED SENSOR SIGNAL (A/T) . The throttle plate and linkage should be free of binding and carbon build-up. Ensure the throttle plate is at the idle position.

1. Turn ignition the on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Start the engine. With the DRBIII® scan tool, monitor the MAP sensor voltage. Snap the throttle. Does the DRBIII® scan tool display MAP voltage from below 2.0 volts at idle to above 3.5 volts at WOT? If yes, go to next step. If no, go to step 10 .
3. Turn the ignition on. With the DRBIII® scan tool, monitor the TP sensor voltage while slowly depressing the throttle pedal from the idle position to the wide open throttle position. Does voltage start at approximately 0.8 volt and go above 3.5 volts with a smooth transition? If yes, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM. If no, go to next step.
4. Turn the ignition off. Disconnect the (K22) Throttle Position (TP) sensor harness connector. Disconnect the Powertrain Control Module (PCM) harness connectors. Measure the resistance of the (F855) 5-volt supply circuit from the TP sensor harness connector to the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the high resistance in the (F855) 5-volt supply circuit.
5. Turn the ignition off. Disconnect the TP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (F855) 5-volt supply circuit from the TP sensor harness connector to ground. Is the resistance above 100 k/ohms? If yes, go to next step. If no, repair the (F855) 5-volt supply circuit for a short to ground.
6. Turn the ignition off. Disconnect the TP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K22) TP sensor signal circuit from the TP sensor harness connector to PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the high resistance in the (K22) TP sensor signal circuit.
7. Turn the ignition off. Disconnect the TP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K22) TP sensor signal circuit from the from the TP sensor harness connector to ground. Is the resistance above 100 k/ohms? If yes, go to next step. If no, repair the (K22) TP sensor signal circuit for a short to ground.
8. Turn the ignition off. Disconnect the TP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K900) sensor ground circuit from the TP sensor harness connector to the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the high resistance in the (K900) sensor ground circuit.
9. Reconnect PCM connectors. With the DRBIII® scan tool, monitor TP sensor voltage. Turn the ignition on. Connect a jumper wire between the (K22) TP sensor signal circuit and the (K900) sensor ground circuit. Does the DRBIII® scan tool display TP voltage from approximately 4.9 volts to below 0.5 of a volt? If yes, replace the TP sensor. If no go to 16 .
10. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (F855) 5-volt supply circuit from the MAP sensor harness connector to the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (F855) 5-volt supply circuit high resistance.
11. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (F855) 5-volt supply circuit from the Map sensor harness connector to ground. Is the resistance above 100 k/ohms? If yes, go to next step. If no, repair the short to ground in the (F855) 5-volt supply circuit.
12. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K1) MAP sensor signal circuit from the MAP sensor harness connector to the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the high resistance in the (K1) MAP sensor signal circuit.
13. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K1) MAP sensor signal circuit from the MAP sensor harness connector to ground. Is the resistance above 100 k/ohms? If yes, go to next step. If no, repair the (K1) MAP sensor signal circuit for a short to ground.
14. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K900) sensor ground circuit from the MAP sensor harness connector to the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the high resistance in the (K900) sensor ground circuit.
15. Turn the ignition off. Disconnect the MAP sensor harness connector. Reconnect PCM connectors. With the DRBIII® scan tool, monitor the MAP sensor voltage. Turn the ignition on. Connect a jumper wire between the (K1) MAP sensor signal circuit and the (K900) sensor ground circuit. Cycle the ignition switch from off to on. With the DRBIII® scan tool, monitor the MAP sensor voltage. Does the DRBIII® scan tool display MAP voltage from approximately 4.9 volts to below 0.5 volt? If yes, replace the MAP sensor. If no, go to next step.
16. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0122: THROTTLE POSITION SENSOR VOLTAGE LOW

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Throttle Position (TP) sensor circuit is monitored with ignition on and battery voltage greater than 10.4 volts. DTC will set if TP sensor voltage at the Powertrain Control Module (PCM) is less than 0.16 volt for 0.7 second.

1. Throttle Position Sensor Voltage Below 0.2 Volt
2. (F855) 5-Volt Supply Circuit Shorted To Ground
3. (F855) 5-Volt Supply Circuit Shorted To (K900) Sensor Ground Circuit
4. (F855) 5-Volt Supply Circuit Open
5. Throttle Position Sensor Internal Failure
6. (K22) Throttle Position Sensor Signal Circuit Shorted To Ground
7. (K22) Throttle Position Sensor Signal Circuit Shorted To (K900) Sensor Ground Circuit
8. TCM Internally Shorted To Throttle Position Sensor Signal Circuit
9. PCM

1. Turn the ignition on. With the DRBIII® scan tool, read the TP sensor voltage. Is the voltage below 0.2 volt? If yes, go to next step. If no, see «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the MAP sensor harness connector. Turn the ignition on. Measure the voltage of the (F855) 5-volt supply circuit in the MAP sensor harness connector. Is the voltage 4.5-5.2 volts? If yes, go to next step. If no, go to step 7 .
3. Turn the ignition off. Disconnect the TP sensor harness connector. With the DRBIII® scan tool, monitor the TP sensor voltage. Turn the ignition on. Is the voltage above 4.5 volts? If yes, replace the TP sensor. If no, go to next step.
4. Turn the ignition off. Disconnect the TP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K22) TP sensor signal circuit in the TP sensor harness connector to ground. Is the resistance below 100 ohms? If yes, repair the TP sensor signal circuit for a short to ground. If no, go to next step.
5. Turn the ignition off. Disconnect the TP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance between the (K22) TP sensor signal circuit and the (K900) sensor ground circuit in the TP sensor harness connector to ground. Is the resistance below 100 ohms? If yes, repair the TP sensor signal circuit for a short to ground in the (K900) sensor ground circuit. If no, go to next step.
6. Turn the ignition off. Disconnect the TP sensor harness connector. Disconnect the TCM harness connector. With the DRBIII® scan tool, monitor the TP sensor voltage. Turn ignition on. Is the voltage above 4.5 volts? If yes, replace the transmission control module. If no, go to next step.
7. Turn the ignition off. Disconnect the TP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (F855) 5-volt supply circuit between the TP sensor harness connector to ground. Is the resistance below 100 ohms? If yes, repair the short to ground. If no, go to next step.
8. Turn the ignition off. Disconnect the TP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (F855) 5-volt supply circuit between the TP sensor harness connector to the (K900) sensor ground circuit. Is the resistance below 100 ohms? If yes, repair the short to (K900) sensor ground circuit in the (F855) 5-volt supply circuit. If no, go to next step.
9. Turn the ignition off. Disconnect the TP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (F855) 5-volt supply circuit in the TP sensor harness connector to the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the (F855) 5-volt supply circuit.
10. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0123: THROTTLE POSITION SENSOR VOLTAGE HIGH

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Throttle Position (TP) sensor circuit is monitored when ignition is on and battery voltage is greater than 10.4 volts. DTC will set if TP sensor voltage at the Powertrain Control Module (PCM) is greater than 4.5 volts for 0.7 second.

1. Throttle Position Sensor Sweep
2. Intermittent Condition
3. (K22) Throttle Position Sensor Signal Circuit Shorted To (F855) 5-Volt Supply Circuit
4. (K22) Throttle Position Sensor Signal Circuit Shorted To Battery Voltage
5. Throttle Position Sensor Internal Failure
6. (K22) Throttle Position Sensor Signal Circuit Open
7. (K900) Sensor Ground Circuit Open
8. PCM

Note. Before continuing ensure throttle is fully closed and free from binding or carbon build-up.

1. Start the engine. With the DRBIII® scan tool, read the TP sensor voltage. Is the voltage above 4.5 volts? If yes, go to next step. If no, go to step 8 .
2. Turn ignition off. Disconnect TP sensor harness connector. Disconnect PCM harness connectors. Measure the resistance between the (K22) TP sensor signal circuit and the (F855) 5-volt supply circuit at the TP sensor harness connector. Is the resistance below 100 ohms? If yes, repair the TP sensor signal circuit for a short to the 5-volt supply circuit. If no, go to next step.
3. Turn the ignition off. Disconnect the TP sensor harness connector. Reconnect PCM connectors. Turn the ignition on. Turn the ignition on. Measure voltage of the (K22) TP signal circuit in the TP sensor harness connector. Is the voltage above 5.2 volts? If yes, repair short to voltage in TP signal circuit. If no, go to next step.
4. Turn the ignition off. Disconnect the TP sensor harness connector. Connect a jumper wire between the (K22) TP sensor signal circuit and the (K900) sensor ground circuit. With the DRBIII® scan tool, monitor the TP sensor voltage. Turn the ignition on. Is the voltage below 0.5 volt? If yes, replace the TP sensor. If no, go to next step.
5. Turn the ignition off. Disconnect the TP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K22) TP sensor signal circuit between the TP sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the (K22) throttle position sensor signal circuit.
6. Turn the ignition off. Disconnect the TP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K900) sensor ground circuit between the TP sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the (K900) sensor ground circuit.
7. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .
8. Turn ignition on. With the DRBIII® scan tool, monitor the TP sensor voltage. Slowly open the throttle from the idle position to the wide open throttle position. Does voltage start at approximately 0.8 volt and go above 3.5 volts with a smooth transition? If yes, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM. If no, replace the TP sensor.

DTC P0125: CLOSED LOOP TEMPERATURE NOT REACHED

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Engine coolant temperature is monitored after engine is started, battery voltage is greater than 10.4 volts and no Engine Coolant Temperature (ECT) sensor DTCs are present. DTC will set if engine coolant temperature does not increase to greater than 45°F within 2-10 minutes. Time depends on start-up engine coolant temperature and ambient temperature. This is a two-trip fault.

1. Low Coolant Level
2. Thermostat Operation
3. ECT Sensor (Out Of Calibration)

Note. If a Engine Coolant Temperature (ECT) DTC is set along with this code, diagnose the ECT DTC first. Inspect the ECT terminals and related powertrain control module terminals. Ensure the terminals are free from corrosion and damage. The best way to diagnose this DTC is to allow the vehicle to sit overnight outside in order to have a totally cold soaked engine. Extremely cold outside ambient temperatures may have caused this DTC to set.

1. Check the coolant system to make sure that the coolant is in good condition and at the proper level. Is the coolant level and condition okay? If yes, go to next step. If no, inspect the vehicle for a coolant leak and add the necessary amount of coolant.
2. Turn the ignition on. With the DRBIII® scan tool, read the ECT Degree value. If the engine was allowed to sit overnight (cold soak), the temperature value should be a sensible value that is somewhere close to the ambient temperature. If engine coolant temperature is above 180°F (82°C), allow the engine to cool until 150°F (65°C) is reached. Start the Engine. During engine warm-up, monitor the ECT Degree value. The temp degree value change should be a smooth transition from start-up to normal operating temp 180°F (82°C). Also monitor the actual coolant temperature with a thermometer. As the engine warms up to operating temperature, the actual coolant temperature (thermometer reading) and the Eng Coolant Tmp Deg in the DRBIII® scan tool values should stay relatively close to each other. Using the appropriate service information, determine the proper opening temperature of the thermostat. Did the thermostat open at the proper temperature? If yes, go to next step. If no, replace the thermostat.
3. Turn ignition on. With the DRBIII® scan tool in sensors, read the Eng Coolant Tmp Deg value. If the engine was allowed to sit overnight (cold soak), the temperature value should be a sensible value that is somewhere close to the ambient temperature. If engine coolant temperature is above 180°F (82°C), allow the engine to cool until 150°F (65°C) is reached. Start the engine. During engine warm-up, monitor the ECT Degree value. The temp degree value change should be a smooth transition from start-up to normal operating temp 180°F (82°C). Also monitor the actual coolant temperature with a thermometer. As the engine warms up to operating temperature, the actual coolant temperature (thermometer reading) and the ECT Deg in the DRBIII® scan tool values should stay relatively close to each other. Is the thermometer reading relatively close to the DRBIII® scan tool ECT reading? If yes, test is complete. If no, replace the ECT sensor.

DTC P0131: 1/1 O2 SENSOR SHORTED TO GROUND OR DTC P0137: 1/2 O2 SENSOR SHORTED TO GROUND

Note. All DTCs listed above are diagnosed using the same test. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

DTC P0131: 1/1 O2 SENSOR SHORTED TO GROUND - Heated Oxygen sensor (HO2S) voltage is monitored at engine shut down O2 Heater Diagnostics. Then at subsequent cold start, engine coolant below 100°F (37°C), ambient/battery sensor reading within 44°F (6.6°C) and engine coolant temperature above 146°F (63°C) on the previous key off. DTC will set when the oxygen sensor signal voltage is below 0.078 volt for 5 seconds after starting engine.

DTC P0137: 1/2 O2 SENSOR SHORTED TO GROUND - Heated Oxygen sensor (HO2S) voltage is monitored with engine running for 119 seconds. Coolant temperature above 176°F (80°C). Vehicle speed greater than 40 MPH. DTC will set when the oxygen sensor signal voltage is below 0.078 volts for 61 seconds after starting engine. This is a two trip fault.

1. O2 Sensor Below 0.08 Volt
2. O2 Sensor Operation
3. O2 Sensor Signal Circuit Shorted To Ground
4. O2 Sensor Signal Circuit Shorted To Sensor Ground Circuit
5. O2 Sensor Signal Shorted Heater Ground Circuit
6. PCM

1. Start the engine. Allow the engine to reach normal operating temperature. With the DRBIII® scan tool, read the O2 sensor voltage. Is the voltage below 0.06 volt? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Start the engine. Disconnect the O2 sensor harness connector. With the DRBIII® scan tool, monitor the O2 sensor voltage. Is the O2 sensor voltage above 0.08 volt? If yes, replace the O2 sensor. If no, go to next step.
3. Turn the ignition off. Disconnect the O2 sensor harness connector. Disconnect Powertrain Control Module (PCM) harness connectors. Measure the resistance between ground and the O2 sensor signal circuit in the O2 sensor harness connector. Is the resistance below 100 ohms? If yes, repair the O2 sensor signal circuit for a short to ground. If no, go to next step.
4. Turn the ignition off. Disconnect the O2 sensor harness connector. Disconnect the PCM harness connector. Measure the resistance between the O2 sensor signal circuit and the sensor ground circuit in the O2 sensor harness connector. Is the resistance below 100 ohms? If yes, repair the O2 sensor signal circuit for a short to the sensor ground circuit. If no, go to next step.
5. Turn the ignition off. Disconnect the O2 sensor harness connector. Disconnect the PCM harness connector. Measure the resistance between the O2 sensor signal circuit and the heater ground circuit at the O2 sensor harness connector. Is the resistance below 100 ohms? If yes, repair the O2 sensor signal circuit for a short to the heater ground circuit. If no, go to next step.
6. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0132: 1/1 O2 SENSOR SHORTED TO VOLTAGE OR DTC P0138: 1/2 O2 SENSOR SHORTED TO VOLTAGE

Note. All DTCs listed above are diagnosed using the same test. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Heated Oxygen sensor (HO2S) voltage is monitored with battery voltage greater than (10 volts/DTC P0132), (10.4 volts/DTC P0138), engine running for 119 seconds and coolant temperature above 176°F (80°C). DTC will set when oxygen sensor voltage is above 1.21 volts for 2.8 seconds. (DTC P0132) This is a one trip fault. (DTC P0138) This is a two trip fault.

1. O2 Sensor Below 1.2 Volts
2. O2 Sensor Operation
3. O2 Sensor Signal Shorted To Voltage
4. O2 Sensor Signal Open
5. O2 Sensor Signal Ground Circuit Open
6. PCM

1. Start the engine. Allow the engine to idle. With the DRBIII® scan tool, read the O2 sensor voltage. Is the voltage above 1.2 volts? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Start the engine. Disconnect the O2 sensor harness connector. With the DRBIII® scan tool, monitor the O2 sensor voltage. Is the O2 sensor voltage above 1.2 volts? If yes, replace the O2 sensor. If no, go to next step.
3. Turn the ignition off. Disconnect the O2 sensor harness connector. Start the engine and allow the engine to idle. Measure the voltage of the O2 sensor signal circuit in the O2 sensor harness connector. Is the voltage above 1.2 volts? If yes, repair the O2 sensor signal for a short to voltage. If no, go to next step.
4. Turn the ignition off. Disconnect the O2 sensor harness connector. Disconnect the Powertrain Control Module (PCM) harness connector. Measure the resistance of the O2 sensor signal circuit from the O2 sensor harness connector to the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the O2 sensor signal for an open.
5. Turn the ignition off. Disconnect the O2 sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the O2 sensor ground circuit from the O2 sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the O2 sensor ground circuit.
6. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0133: 1/1 O2 SENSOR SLOW RESPONSE OR DTC P0139: 1/2 O2 SENSOR SLOW RESPONSE

Note. All DTCs listed above are diagnosed using the same test. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

DTC P0133: 1/1 O2 SENSOR SLOW RESPONSE - Start and drive vehicle greater than 10 MPH with throttle open for a minimum 200 seconds. Coolant greater than 158°F (70°C). EVAP purge is active. Test performs in idle drive. DTC will set when the oxygen sensor signal voltage is switching from below 0.33 volt to above 0.61 volt and back fewer times than required in 60 seconds. This is a two trip fault.

DTC P0139: 1/2 O2 SENSOR SLOW RESPONSE - Start engine. Allow engine to idle. For 1st part of test, if limits are exceeded, test passes. If not, 2nd part of test runs. Engine running for greater than 295 seconds, amb/batt temp greater than 44°F, Baro greater than 22.13 in. Hg., MAP 13.8-21.6 in. Hg, RPM 1400-2500 (4-cylinder); RPM 1120-1950 (6 cylinder) and VSS 22-60 MPH. DTC will set when the oxygen sensor signal voltage has not switched below 0.35 volt to above 0.53 volt in 411 seconds of engine run. This is a two trip fault.

1. Good Trip Equal To Zero
2. Exhaust Leak
3. O2 Sensor Signal Circuit Voltage Drop
4. O2 Sensor Ground Circuit Voltage Drop
5. O2 Sensor

Note. Before continuing check for contaminants that may have damaged HO2S such as contaminated fuel, unapproved silicone, oil and coolant.

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Start the engine. Inspect the exhaust system for leak between the engine and the related O2 sensor. Are there any exhaust leaks? If yes, repair or replace the leaking exhaust parts as necessary. If no, go to next step.
3. Perform a voltage drop test by back probing the O2 sensor signal circuit at the O2 sensor harness connector and Powertrain Control Module (PCM) harness connector. Start the engine. Allow the engine to idle. Is the voltage below 0.10 volt? If yes, go to next step. If no, repair the high resistance on the O2 sensor signal circuit.
4. Backprobe between the O2 sensor ground circuit at the O2 sensor harness connector and PCM harness connector. Start the engine. Allow the engine to idle. Is the voltage below 0.10 volt? If yes, go to next step. If no, repair the high resistance on the (K127) O2 sensor ground circuit.
5. If no other possible causes are remaining, replace O2 sensor.

DTC P0134: 1/1 O2 SENSOR STAYS AT CENTER OR DTC P0140: 1/2 O2 SENSOR STAYS AT CENTER

Note. All DTCs listed above are diagnosed using the same test. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

DTC P0134 - Oxygen sensor monitor will run after engine has been running for greater than 121 seconds, in closed loop fuel control mode with engine coolant temperature greater than 150.8°F (66°C). DTC will set if O2 sensor voltage is 0.35-0.58 volt for 30 seconds and then O2 signal volt is 1.5 volts for 60 seconds. This is a one-trip fault.

DTC P0140 - Oxygen sensor monitor will run after engine has been running for greater than 121 seconds, in closed loop fuel control mode with engine coolant temperature greater than 150.8°F (66°C). Vehicle speed greater then 40 MPH. DTC will set if O2 sensor voltage is 0.35-0.58 volt for 30 seconds, and then O2 signal volt is 1.5 volts for 60 seconds. This is a two-trip fault.

1. Good Trip Equal To Zero
2. O2 Sensor Operation
3. O2 Sensor Ground Circuit Open
4. O2 Sensor Signal Open
5. O2 Sensor Ground Circuit Voltage Drop
6. O2 Sensor Signal Circuit Voltage Drop
7. PCM

Note. Before continuing check for contaminants that may have damaged HO2S such as contaminated fuel, unapproved silicone, oil and coolant.

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the O2 sensor harness connector. Turn the ignition on. Connect a test light to battery voltage, probe the O2 sensor signal circuit in the O2 sensor harness connector. With the DRBIII® scan tool, read the O2 sensor voltage. Is the voltage above 1.0 volts? If yes, replace the O2 sensor. If no, go to next step.
3. Turn the ignition off. Disconnect the O2 sensor harness connector. Disconnect the Powertrain Control Module (PCM) harness connectors. Measure the resistance of the O2 sensor ground circuit between the O2 sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to the next step. If no, repair the (K127) O2 sensor ground circuit for an open.
4. Turn the ignition off. Disconnect the O2 sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the O2 sensor signal circuit between the O2 sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the O2 sensor signal circuit for an open.
5. Ensure ignition is off. Reconnect O2 sensor and PCM harness connectors. Perform a voltage drop test by back probing between the O2 sensor ground circuit at the O2 sensor harness connector and PCM harness connector. Start the engine. Allow the engine to idle. Is the voltage below 0.10 volt? If yes, go to next step. If no, repair the high resistance on the (K127) O2 sensor ground circuit.
6. Perform a voltage drop test by backprobing between the O2 sensor signal circuit at the O2 sensor harness connector and PCM harness connector. Start the engine. Allow the engine to idle. Is the voltage below 0.10 volt? If yes, go to next step. If no, repair the high resistance on the O2 sensor signal circuit.
7. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0135: 1/1 O2 SENSOR HEATER FAILURE

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Oxygen sensor monitor will run during vehicle shutdown after vehicle has been driven greater than 10 MPH with throttle open for at least 3 minutes and battery voltage greater than 11 volts. DTC will set if O2 sensor voltage continues to rise (instead of fall) after the diagnostics has turned the Auto Shutdown relay (ASD) back on. This is a two-trip fault.

1. O2 Sensor Heater Operation
2. O2 Heater Element
3. O2 Sensor Heater Control Circuit Open
4. O2 Sensor Heater Control Circuit Shorted To ground
5. ASD Relay Output Circuit Open
6. PCM

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to step 3 . If no, go to next step.
2. Turn the ignition is on. With the DRBIII® scan tool, actuate the O2 Heater Test. With the DRBIII® scan tool, monitor O2 sensor voltage for at least 2 minutes. Does the voltage stabilize between 0.4-0.6 volt during the Heater Test? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
3. Turn the ignition off. Allow the O2 sensor to cool down to room temperature. Disconnect the O2 sensor harness connector. Measure the resistance across the O2 sensor heater element component side. Is the resistance between 2.0-7.0 ohms? If yes, go to next step. If no, replace the O2 sensor.
4. Turn the ignition off. Disconnect the O2 sensor harness connector. Measure the resistance of the O2 sensor heater ground circuit in the O2 sensor harness connector to ground. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the O2 sensor heater ground circuit for an open.
5. Turn the ignition off. Disconnect the O2 sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the O2 sensor heater control circuit in the O2 sensor harness connector to ground. Is the resistance below 5.0 ohms? If yes, repair the 02 sensor heater control circuit for a short to ground. If no, go to next step.
6. Turn the ignition off. Disconnect the O2 sensor harness connector. With the DRBIII® scan tool, actuate the O2 Heater Test. Measure the voltage of the ASD relay output circuit in the O2 sensor harness connector. Is the voltage above 11.0 volts? If yes, go to next step. If no, repair the ASD relay output circuit for an open.
7. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0141: 1/2 O2 SENSOR HEATER FAILURE

Note. All DTCs listed above are diagnosed using the same test. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Oxygen sensor monitor will run during vehicle shutdown after vehicle has been driven greater than 10 miles with throttle open for at least 3 minutes and battery voltage greater than 11 volts. DTC will set if O2 sensor voltage continues to rise (instead of fall) after the diagnostics has turned the Auto Shutdown (ASD) relay back on. This is a two-trip fault.

1. O2 Sensor Heater Operation
2. O2 Heater Element
3. O2 Sensor Heater Ground Circuit Open
4. ASD Relay Output Circuit Open
5. PCM

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to step 3 . If no, go to next step.
2. Turn the ignition is on. With the DRBIII® scan tool, actuate the O2 Heater Test. With the DRBIII® scan tool, monitor O2 sensor voltage for at least 2 minutes. Does the voltage stabilize between 0.4-0.6 volt during the Heater Test? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
3. Turn the ignition off. Allow the O2 sensor to cool down to room temperature. Disconnect the O2 sensor harness connector. Measure the resistance across the O2 sensor heater element component side. Is the resistance between 4.0-7.0 ohms? If yes, go to next step. If no, replace the O2 sensor.
4. Turn the ignition off. Disconnect the O2 sensor harness connector. Measure the resistance of the O2 sensor heater ground circuit in the O2 sensor harness connector to ground. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the O2 sensor heater ground circuit for an open.
5. Turn the ignition off. Disconnect the O2 sensor harness connector. With the DRBIII® scan tool, actuate the O2 Heater Test. Measure the voltage of the ASD relay output circuit in the O2 sensor harness connector. Is the voltage above 11.0 volts? If yes, go to next step. If no, repair the ASD relay output circuit for an open.
6. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0171: 1/1 FUEL SYSTEM LEAN

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

System is monitored with engine running in closed loop mode, ambient/battery temperature above 20°F (-7°C) and altitude less than 8000 feet. DTC will set if the Powertrain Control Module (PCM) multiplies short term compensation by long term adaptive and a certain percentage is exceeded for two trips, a freeze frame is stored, the MIL illuminates and a DTC is stored.

1. Fuel Pressure Out Of Specs
2. Good Trip Equal To Zero
3. Restricted Fuel Supply Line
4. Fuel Pump Inlet Strainer Plugged
5. Fuel Pump Module
6. O2 Sensor
7. O2 Sensor Signal Circuit Shorted To Ground
8. O2 Sensor Heater Operation
9. Throttle Position Sensor Voltage Greater Than 0.92 Volt With Throttle Closed
10. Throttle Position Sensor Sweep
11. MAP Sensor Operation
12. ECT Sensor Operation
13. Engine Mechanical Problem
14. Fuel Filter/Pressure Regulator
15. PCM

Note. Before continuing check for contaminants that may have damaged HO2S such as contaminated fuel, unapproved silicone, oil and coolant.

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Release fuel pressure. See «FUEL SYSTEM PRESSURE RELEASE»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__fuel-system-pressure-release) . Connect fuel pressure gauge to fuel rail. Turn ignition on. With the DRBIII® scan tool, actuate ASD Fuel System test and observe fuel pressure gauge. Fuel pressure should be 53-63 psi (365-434 kPa). Turn ignition off. If fuel pressure is within specification, stop all actuations and go to next step. If fuel pressure is less than specification, stop all actuations and go to step 13 . If fuel pressure is greater than specification, stop all actuations. Replace fuel filter/pressure regulator. See «FUEL SYSTEMS»(/dodge/grand-caravan/iv-2000-2007/remont/removal-installation/#how-to-overhaul-installation-the-engine-controls-removal__fuel-systems) in REMOVAL & INSTALLATION - CARAVAN, TOWN & COUNTRY, & VOYAGER article.
3. Turn the ignition on. With the DRBIII® scan tool, read the O2 sensor voltage. Is the voltage between 0.4 and 0.6 volt? If yes, go to next step. If no, go to step 10 .
4. Turn the ignition off. Wait a minimum of 10 minutes to allow the O2 sensor to cool down before continuing the test. Allow the O2 sensor voltage to stabilize between 0.4 and 0.6 volt. Turn the ignition on. With the DRBIII® scan tool, actuate the O2 Heater Test. With the DRBIII® scan tool, monitor O2 sensor voltage for at least 2 minutes. Does the voltage stay between 0.4 and 0.6 volt? If yes, replace the O2 sensor. If no, go to next step.
5. Turn the ignition on. With the DRBIII® scan tool, read TP sensor voltage. The throttle must be against the stop. Is the voltage 0.92 volt or less with the throttle closed? If yes, go to next step. If no, check for a binding throttle condition. If okay, replace the TP sensor.
6. Turn the ignition on. With the DRBIII® scan tool, read the TP sensor voltage. While monitoring the DRBIII® scan tool, slowly open and close the throttle. Does the voltage increase and decease smoothly? If yes, go to next step. If no, replace the TP sensor.
7. Turn the ignition off. Connect a vacuum gauge to a manifold vacuum source. Start the engine. Allow the engine to idle. If engine will not idle, maintain a constant RPM above idle. With the DRBIII® scan tool in Sensors, read the MAP sensor vacuum value. Is the DRBIII® scan tool reading within 1 in. Hg of the vacuum gauge reading? If yes, go to next step. If no, replace the MAP sensor.
8. For this test to be valid, the thermostat must be operating correctly. This test works best if performed on a cold engine (cold soak). Turn the ignition on. With the DRBIII® scan tool, read the Engine Coolant Temperature (ECT) sensor value. If the engine was allowed to sit overnight (cold soak), the temperature value should be a sensible value that is somewhere close to the ambient temperature. If engine coolant temperature is above 180°F (82°C), allow the engine to cool until 150°F (65°C) is reached. Start the engine. During engine warm-up, monitor the ECT sensor value. The temperature value change should be a smooth transition from start up to normal operating temperature 180°F (82°C). The value should reach at least 180°F (82°C). Did the engine coolant temperature value increase a smooth transition and did it reach at least 180°F (82°C)? If yes, go to next step. If no, replace the ECT sensor.
9. Check for any of the following conditions/mechanical problems. Ensure air intake system is free from leaks. Ensure engine vacuum is at least 13 in. Hg at idle in Park or Neutral. Ensure valve timing is correct. Ensure engine compression is within specification. Ensure exhaust system is free from restrictions or leaks. Ensure PCV system flows freely. Ensure torque converter stall speed is within specification. Ensure power brake booster has no internal vacuum leaks. Ensure fuel is not contaminated. Ensure fuel injectors are not restricted. Ensure fuel injector harness connectors are connected to correct fuel injectors. Are there any engine mechanical problems? If yes, repair as necessary. If no, test is complete.
10. Turn the ignition on. Disconnect the O2 sensor harness connector. With the DRBIII® scan tool, monitor the O2 sensor voltage. Is the O2 sensor voltage between 0.4 and 0.6 volt? If yes, replace the O2 sensor. If no, go to next step.
11. Turn the ignition off. Disconnect the O2 sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the O2 sensor signal circuit in the PCM harness connector to ground. Is the resistance below 5.0 ohms? If yes, repair the O2 sensor signal for a short to ground. If no, go to next step.
12. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .
13. Turn the ignition off. Release fuel pressure. See «FUEL SYSTEM PRESSURE RELEASE»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__fuel-system-pressure-release) . Raise vehicle on hoist, and disconnect the fuel pressure line at the fuel pump module. Install special 5/16 Fuel Line Adapter (6539) between disconnected fuel line and the fuel pump module. Attach a fuel pressure test gauge to the "T" fitting on fuel line adapter. Turn the ignition on. With the DRBIII® scan tool, actuate the ASD Fuel System test and observe the fuel pressure gauge. Note fuel pressure reading, stop ASD Fuel System test and turn ignition off. If fuel pressure is 53-63 psi (365-434 kPa), repair or replace fuel supply line as necessary. If fuel pressure is not 53-63 psi (365-434 kPa), go to next step.
14. Release fuel pressure. See «FUEL SYSTEM PRESSURE RELEASE»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__fuel-system-pressure-release) . Remove fuel pump module from fuel tank. Inspect fuel inlet strainer. Is the fuel inlet strainer plugged? If yes, replace fuel inlet strainer. If no, go to next step.
15. There are no possible causes remaining, replace the fuel pump module.

DTC P0172: 1/1 FUEL SYSTEM RICH

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

System is monitored with engine running in closed loop mode, ambient/battery temperature above 20°F (-7°C) and altitude below 8000 feet. DTC will set if the Powertrain Control Module (PCM) multiplies short term compensation by long term adaptive and the result is below a certain value for two trips, a freeze frame is stored, the MIL illuminates and a DTC is stored.

1. Good Trip Equal To Zero
2. O2 Sensor Heater Operation
3. O2 Sensor
4. EVAP Purge Solenoid Operation
5. O2 Sensor Signal Circuit Shorted To Voltage
6. O2 Sensor Signal Circuit Open
7. Throttle Position Sensor Voltage Greater Than 0.92 Volt With Throttle Closed
8. TP Sensor Sweep
9. MAP Sensor Operation
10. ECT Sensor Operation
11. Engine Mechanical Problem
12. Fuel Filter/Pressure Regulator (High)
13. PCM

Note. Before continuing check for contaminants that may have damaged HO2S such as contaminated fuel, unapproved silicone, oil and coolant.

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Release fuel pressure. See «FUEL SYSTEM PRESSURE RELEASE»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__fuel-system-pressure-release) . Connect fuel pressure gauge to fuel rail. Turn ignition on. With the DRBIII® scan tool, actuate ASD Fuel System Test and observe fuel pressure gauge. Fuel pressure should be 53-63 psi (365-434 kPa). Turn ignition off. If fuel pressure is within specification, stop all actuations and go to next step. If fuel pressure is greater than specification, stop all actuations. Replace fuel filter/pressure regulator.
3. Turn the ignition on. With the DRBIII® scan tool, read the O2 sensor voltage. Is the voltage between 0.4 and 0.6 volt? If yes, go to next step. If no, go to step 11 .
4. Turn the ignition off. Wait a minimum of 10 minutes to allow the O2 sensor to cool down before continuing the test. Allow the O2 sensor voltage to stabilize between 0.4 and 0.6 volt. Turn the ignition on. With the DRBIII® scan tool, actuate the O2 Heater Test. With the DRBIII® scan tool, monitor O2 sensor voltage for at least 2 minutes. Does the voltage stay between 0.4 and 0.6 volt? If yes, replace the O2 sensor. If no, go to next step.
5. Turn the ignition off. Disconnect the hoses at the EVAP purge solenoid. Using a hand vacuum pump, apply 10 in. Hg of vacuum to the EVAP purge solenoid vacuum source port on the component side. Did the EVAP purge solenoid hold vacuum? If yes, go to next step. If no, replace the EVAP purge solenoid.
6. Turn the ignition on. With the DRBIII® scan tool, read TP sensor voltage. The throttle must be against the stop. Is the TP sensor voltage 0.92 volt or less with the throttle closed? If yes, go to next step. If no, check for a binding throttle condition. If okay, replace the TP sensor.
7. Turn the ignition on. With the DRBIII® scan tool, read the TP sensor voltage. While monitoring the DRBIII® scan tool, slowly open and close the throttle. Does the voltage increase and decease smoothly? If yes, go to next step. If no, replace the TP sensor.
8. Turn the ignition off. Connect a Vacuum Gauge to a Manifold Vacuum source. Start the engine. Allow the engine to idle. If engine will not idle, maintain a constant RPM above idle. With the DRBIII® scan tool in Sensors, read the MAP sensor vacuum value. Is the DRBIII® scan tool reading within 1 in. Hg of the Vacuum Gauge reading? If yes, go to next step. If no, replace the MAP sensor.
9. For this test to be valid, the thermostat must be operating correctly. This test works best if performed on a cold engine (cold soak). Turn the ignition on. With the DRBIII® scan tool, read the engine coolant temperature sensor value. If the engine was allowed to sit overnight (cold soak), the temperature value should be a sensible value that is somewhere close to the ambient temperature. If engine coolant temperature is above 180°F (82°C), allow the engine to cool until 150°F (65°C) is reached. Start the engine. During engine warm-up, monitor the engine coolant temperature value. The temp value change should be a smooth transition from start up to normal operating temp 180°F (82°C). The value should reach at least 180°F (82°C). Did the engine coolant temperature value increase a smooth transition and did it reach at least 180°F (82°C). If yes, go to next step. If no, replace the engine coolant temperature sensor.
10. Check for any of the following conditions/mechanical problems. Ensure air intake system is free from leaks. Ensure engine vacuum is at least 13 in. Hg at idle in Park or Neutral. Ensure valve timing is correct. Ensure engine compression is within specification. Ensure exhaust system is free from restrictions or leaks. Ensure PCV system flows freely. Ensure torque converter stall speed is within specification. Ensure power brake booster has no internal vacuum leaks. Ensure fuel is not contaminated. Ensure fuel injectors are not restricted. Ensure fuel injector harness connectors are connected to correct fuel injectors. Are there any engine mechanical problems? If yes, repair as necessary. If no, test is complete.
11. Turn the ignition on. Disconnect the O2 sensor harness connector. With the DRBIII® scan tool, monitor the O2 sensor voltage. Is the O2 sensor voltage between 0.4 and 0.6 volt? If yes, replace the O2 sensor. If no, go to next step.
12. Turn the ignition off. Disconnect the O2 sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the O2 sensor signal circuit between the PCM harness connector and the O2 sensor harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, check for O2 sensor signal circuit for an open.
13. Turn the ignition off. Disconnect the O2 sensor harness connector. Reconnect the PCM harness connectors. Start the engine. Measure the voltage of the O2 sensor signal circuit in the O2 sensor harness connector. Is the voltage above 0.60 volt? If yes, repair the O2 sensor signal circuit for a short to voltage. If no, go to next step.
14. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0201: INJECTOR #1 CONTROL CIRCUIT, DTC P0202: INJECTOR #2 CONTROL CIRCUIT, DTC P0203: INJECTOR #3 CONTROL CIRCUIT, DTC P0204: INJECTOR #4 CONTROL CIRCUIT, DTC P0205: INJECTOR #5 CONTROL CIRCUIT OR DTC P0206: INJECTOR #6 CONTROL CIRCUIT

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored when battery voltage is greater than 10.4 volts, Automatic Shutdown (ASD) relay is energized, and engine speed is less than 3000 RPM. DTC will set if no inductive spike is sensed after injector turn off.

1. (K342) ASD Relay Output Circuit Open
2. Good Trip Equal To Zero
3. Fuel Injector
4. Fuel Injector Driver Circuit Open
5. Fuel Injector Driver Circuit Shorted To Ground
6. PCM

1. Record the Freeze Frame Information that set along with the DTC. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the fuel injector harness connector. Measure the resistance fuel injector, component side. Is the resistance between 10-16 ohms? If yes, go to next step. If no, replace the fuel injector.
3. Turn the ignition off. Disconnect the fuel injector harness connector. Remove the ASD relay from the IPM. Turn the ignition on. Jumper the fused B+ circuit and the ASD relay output circuit in the IPM. Using a 12-volt test light connected to ground, probe the (K342) ASD relay output circuit. Does the test light blink/flicker brightly? If yes, go to next step. If no, repair the open in the (K342) ASD relay output circuit.
4. Turn the ignition off. Disconnect the Fuel Injector harness connector. Disconnect the Powertrain Control Module (PCM) harness connector. Measure the resistance of the fuel injector driver circuit between the fuel injector harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no repair the open in the fuel injector driver circuit.
5. Turn the ignition off. Disconnect the fuel injector harness connector. Disconnect the PCM harness connector. Measure the resistance between ground and the fuel injector driver circuit in the fuel injector harness connector. Is the resistance below 100 k/ohms? If yes, repair the short to ground in the fuel injector driver circuit. If no, go to next step.
6. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0300: MULTIPLE CYLINDER MISFIRE, DTC P0301: CYLINDER #1 MISFIRE, DTC P0302: CYLINDER #2 MISFIRE, DTC P0303: CYLINDER #3 MISFIRE, DTC P0304: CYLINDER #4 MISFIRE, DTC P0305: CYLINDER #5 MISFIRE OR DTC P0306: CYLINDER #6 MISFIRE

Note. All DTCs listed above are diagnosed using the same test. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Cylinder misfire is monitored any time engine is running and adaptive numerator has been successfully updated. DTC will set when greater than a 2 percent misfire rate is measured during two trips, or with a 10-30 percent misfire rate during one trip.

1. Intermittent Misfire
2. Visual Inspection
3. Ignition Coil
4. ASD Relay Output Circuit
5. Engine Mechanical Problem
6. Coil Control Circuit
7. Spark Plug
8. Checking Fuel Pressure
9. Fuel Pump Inlet Strainer Plugged
10. Restricted Fuel Supply Line
11. Fuel Pump Module
12. Checking Fuel Leak Down
13. Fuel Injector
14. Injector Control Circuit
15. PCM

1. With the DRBIII® scan tool, select DTCs and Related Functions. Read and record the Freeze Frame Data. Select OBD-II Monitors. Read and record the Misfire Similar Conditions Window Data. With these screens, attempt to duplicate the condition(s) that has set this DTC. When the vehicle is operating in the Similar Conditions Window, refer to the Which Cylinder Is Misfiring screen for at least one minute. Is the DRBIII® scan tool counting misfires at this time? If yes, go to next step. If no, the test is complete.
2. Visually inspect the engine for any of the following conditions. Worn serpentine belt. Binding engine-driven accessories, A/C compressor, P/S pump and water pump. Misalignment of water pump, P/S pump and A/C compressor pulleys. Corroded PCM power and ground circuits. Improper CKP, CMP, MAP, and TP sensor mounting. Poor connector/terminal to component connection. i.e., CKP sensor, fuel injector, ignition coil, etc. Vacuum leaks. Restricted air induction system or exhaust system. Were any of the above conditions present? If yes, repair as necessary. If no, go to next step.
3. Turn the ignition off. Disconnect the ignition coil harness connector. Disconnect the fuel injector harness connector. Ignition on, engine not running. With the DRBIII® scan tool, actuate the ASD relay. Using a 12-volt test light connected to ground, probe the (F42) ASD relay output circuit at the ignition coil harness connector and fuel injector harness connector. Does the test light illuminate brightly? If yes go to next step. If no, repair the excessive resistance or short to ground in the (F42) ASD relay output circuit.
4. Turn the ignition off. Remove the ignition coil on from the spark plug. Disconnect the fuel injector harness connector of the cylinder being tested. Before continuing inspect the ignition coil for damage or carbon tracking. Replace as necessary. Install a spark tester on the ignition coil. While cranking the engine observe the spark coming from the spark tester. A crisp Blue spark that is able to jump the gap of the spark tester should be generated. Is good spark present? If yes, go to next step. If no, go to 14 .
5. Turn the ignition off. Remove the spark plug. Inspect the spark plug for the following conditions. Cracks Carbon Tracking Foreign Material Gap Size Out Of Specifications Loose Or Broken Electrode Lightly tap the bottom of the spark plug on a solid surface. The electrode in the spark plug should not move. Were any of the above condition present? If yes, replace the spark plug. If no, go to next step.
6. Install a fuel pressure gauge to the fuel rail. Start the engine and observe the fuel pressure reading. Fuel pressure specification is 53-63 psi (366 to 434 kPa). Choose a conclusion that best matches your fuel pressure reading. If within specification, go to next step. If below specification, go to 12 . If above specification, replace the fuel filter/pressure regulator.
7. Turn the ignition off. Install 5/16" Fuel Line Aapter (6539). Install the fuel pressure gauge. Start the engine and allow the fuel system to reach maximum pressure. Turn the ignition off. Fuel specification is 53-63 psi (366 to 434 kPa). Using Hose Clamp Pliers (C4390), pinch the rubber fuel line between the fuel pressure gauge and the fuel pump module. Monitor the fuel pressure gauge for a minimum of 5 minutes. The pressure should not fall below 35 psi (241 kPa). Does the upstream gauge fall below the specification? If yes, replace the leaking fuel injector(s). If no, go to next step.
8. Remove special tool C4390. Start the engine and allow the fuel pressure to reach maximum pressure. Ignition on, engine not running. Using the DRBIII® scan tool, actuate the fuel injector for the cylinder that indicated the misfire. Monitor the fuel pressure gauge. Does the fuel pressure gauge indicate a drop in fuel pressure? If yes, go to next step. If no, go to 10 .
9. Check for any of the following conditions/mechanical problems. The engine vacuum must be at least 13 in. Hg. in Neutral. Engine valve timing must be within specifications. Engine compression must be within specifications. Engine exhaust system must be free of any restrictions or leaks. Engine PVC system must flow freely. Torque converter stall speed must be within specifications. Power brake booster no internal vacuum leaks. Fuel must be free of contamination. Cam lobes must not be worn excessively. Cylinder leakage test must be within specifications. Valve springs cannot be weak or broken. Are there any engine mechanical problems? If yes, repair as necessary. If no, go to 17 .
10. Turn the ignition off. Disconnect the fuel injector harness connector. Ignition on, engine not running. When a misfire is detected for a particular cylinder, the PCM will shut down that cylinders injector control circuit. With the DRBIII® scan tool, erase DTCs. Using a 12-volt test light connected to B+, probe the injector control circuit. With the DRBIII® scan tool, actuate the fuel injector. Does the test light blink/flicker? If yes, replace the fuel injector. If no, go to next step.
11. Turn the ignition off. Disconnect the fuel injector harness connector. Disconnect the PCM harness connectors. Check the injector control circuit for an open, short to ground, and short to voltage. Was a problem found with the injector control circuit? If yes, repair the excessive resistance or short in the injector control circuit. If no, go to 17 .
12. Turn the ignition off. Raise vehicle on hoist, and disconnect the fuel pressure line at the fuel pump module. Install special tool 6539 (5/16") fuel line adapter fuel pressure gauge between the fuel supply line and the fuel pump module. Ignition on, engine not running. With the DRBIII® scan tool, actuate the ASD Fuel System test and observe the fuel pressure gauge. Fuel pressure specification is 53-63 psi (366 to 434 kPa). Is the fuel pressure within specification? If yes, repair or replace fuel supply line as necessary. If no, go to next step.
13. Turn the ignition off. Remove the fuel pump module and inspect the fuel inlet strainer. Is the fuel inlet strainer plugged? If yes, replace the fuel pump inlet strainer. If no, the test is complete.
14. Turn the ignition off. Remove the ignition wire. Measure the resistance of the ignition wire. Is the resistance below 10 k/ohms? If yes, go to next step. If no, replace the ignition wire.
15. Turn the ignition off. Disconnect the ignition coil harness connector. Remove the fuel pump relay or ASD relay. Using a 12-volt test light connected to B+, probe the ignition coil control circuit. Crank the engine for 5 seconds while observing the test light. Does the test light brightly blink/flicker? If yes, replace the ignition coil. If no, go to next step.
16. Turn the ignition off. Disconnect the ignition coil harness connector. Disconnect the PCM harness connectors. Check the coil control circuit for an open, short to ground, and short to voltage. Was a problem found with the coil control circuit? If yes, repair the coil control circuit. If no, go to next step.
17. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0320: NO CRANK REFERENCE SIGNAL AT PCM

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored with engine cranking, battery voltage greater than 10.4 volts. DTC will set if no Crankshaft Position (CKP) sensor signal is present during engine cranking and at least 8 camshaft position signals have occurred.

1. Intermittent CKP Signal
2. Intermittent CMP Signal
3. Intermittent Wiring
4. Intermittent Condition
5. (F888) 8-Volt Supply Circuit Open
6. (F888) 8-Volt Supply Circuit Shorted To Ground
7. (F888) 8-Volt Supply Circuit Shorted To Voltage
8. (K24) CKP Sensor Signal Circuit Open
9. (K24) CKP Sensor Signal Circuit Shorted Ground
10. (K24) CKP Sensor Signal Circuit Shorted To Voltage
11. (K24) CKP Sensor Signal Shorted To (F888) 8-Volt Supply Circuit
12. (K900) Sensor Ground Circuit Open
13. PCM
14. Crankshaft Position Sensor

1. Ignition on, engine not running. With the DRBIII® scan tool, read DTCs and record the related freeze frame data. With the DRBIII® scan tool, read the current CKP state while cranking the engine. Does the DRBIII® scan tool display Current CKP State Present while cranking the engine? If yes, go to next step. If no, go to step 6 .
2. Ignition on, engine not running. With the DRBIII® scan tool dual channel lab scope probe and the Miller Special Tool (6801), backprobe the (K24) CKP signal circuit in the crank sensor connector and the PCM harness connector. Wiggle the related wire harness and connectors. Monitor the lab scope screen. Start the engine. Lightly tap on the crank sensor and wiggle the related wire harness and connectors. Observe the lab scope screen, looking for any erratic pulses generated by the CKP sensor. Did the CKP sensor generate any erratic pulses? If yes, carefully inspect the wire harness and connections, repair as necessary. If wiring harness and connectors are okay, replace the CKP sensor. If no, go to next step.
3. Turn the ignition off. With the DRBIII® scan tool lab scope probe and the Miller Special Tool (6801), backprobe the CMP sensor signal circuit in the Powertrain Control Module (PCM) harness connector Turn the ignition on. Do not start or crank the engine. Observe the lab scope screen. Look for any pulses generated by the CMP sensor. Did the CMP sensor generate any pulses? If yes, replace the CMP sensor. If no, go to next step.
4. Turn the ignition off. With the DRBIII® lab scope probe and the Miller Special Tool (6801), backprobe the CKP signal circuit in the PCM harness connector. Start the engine. Observe the lab scope screen while wiggling the wiring harness and connectors. Were there any irregularities in the lab scope pattern? If yes, check the harness connectors carefully. If OK, replace the crankshaft position sensor. If no, go to next step.
5. The conditions that set the DTC are not present at this time. The following list may help in identifying the intermittent condition. With the engine running at normal operating temperature, monitor the DRBIII® scan tool parameters related to the DTC while wiggling the wiring harness. Look for parameter values to change and/or a DTC to set. Review the DRBIII® scan tool freeze frame information. If possible, try to duplicate the conditions under which the DTC was set. Refer to any Technical Service Bulletins (TSB) that may apply. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Were any of the above conditions present? If yes, repair as necessary If no, test complete.
6. Turn the ignition off. Disconnect the CKP sensor harness connector. Ignition on, engine not running. Measure the voltage of the (F888) 8-volt supply circuit at the CKP sensor harness connector. Is the voltage 7.5-9.1 volts? If yes, go to next step. If no, go to step 14 .
7. Turn the ignition off. Disconnect the CKP sensor harness connector. Ignition on, engine not running. Measure the voltage on the (K24) CKP sensor signal circuit at the CKP sensor harness connector. Is the voltage 4.5-5.0 volts? If yes, go to next step. If no, go to step 10 .
8. Turn the ignition off. Disconnect the CKP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K900) sensor ground circuit from the CKP sensor harness connector to the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the (K900) sensor ground circuit.
9. If there are no possible causes remaining, replace the crankshaft position sensor.
10. Turn the ignition off. Disconnect the CKP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K24) CKP sensor signal circuit from the CKP sensor harness connector to the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the (K24) CKP sensor signal circuit.
11. Turn the ignition off. Disconnect the CKP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance between ground and the (K24) CKP sensor signal circuit at the CKP sensor harness connector. Is the resistance below 100 ohms? If yes, repair the short to ground in the (K24) CKP sensor signal circuit. If no, go to next step.
12. Turn the ignition off. Disconnect the CKP sensor harness connector. Connect the PCM harness connectors. Ignition on, engine not running. Measure the voltage of the (K24) CKP sensor signal circuit at the CKP sensor harness connector. Is the voltage above 5.3 volts? If yes, repair the short to voltage in the (K24) CKP sensor signal circuit. If no, go to next step.
13. Turn the ignition off. Disconnect the CKP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance between the (K24) CKP sensor signal circuit and the (F888) 8-volt supply circuit at the CKP sensor harness connector. Is the resistance below 5.0 ohms? If yes, repair the short between the (F888) 8-volt supply circuit and the (K24) CKP sensor signal circuit. If no, go to step 17 .
14. Turn the ignition off. Disconnect the CKP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (F888) 8-volt supply circuit from the CKP sensor harness connector to the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the (F888) 8-volt supply circuit.
15. Turn the ignition off. Disconnect the PCM harness connectors. Disconnect the CKP sensor harness connector. Measure the resistance between ground and the (F888) 8-volt supply circuit at the. CKP sensor harness connector. Is the resistance below 100 ohms? If yes, repair the short to ground in the (F888) 8-volt supply circuit. If no, go to next step.
16. Turn the ignition off. Disconnect the CKP sensor harness connector. Connect the PCM harness connectors. Ignition on, engine not running. Measure the voltage of the (F888) 8-volt supply circuit at the CKP sensor harness connector. Is the voltage above 5.3 volts? If yes, repair the short to voltage in the (F888) 8-volt supply circuit. If no, go to next step.
17. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0339: CRANKSHAFT POSITION SENSOR INTERMITTENT

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Engine running or cranking. When the failure counter reaches 20. One Trip Fault.

1. Good Trip Equal To Zero
2. Wiring Harness Inspection
3. (K6) 5 Volt Supply Circuit Open Or Shorted To Ground
4. Tone Wheel/Pulse Ring Inspection
5. Checking Camshaft Position Sensor Signal With The DRBIII® Lab
6. Crankshaft Position Sensor
7. (K24) CKP Sensor Signal Circuit Open
8. (K24) CKP Sensor Signal Circuit Shorted Ground
9. (K24) CKP Sensor Signal Circuit Shorted To Voltage
10. (K24) CMP Sensor Signal Shorted To (K6) 5-Volt Supply Circuit
11. PCM

1. Ignition on, engine not running. With the DRBIII® scan tool, read DTCs and record the related Freeze Frame data. Is the Good Trip Counter displayed and equal to zero? If yes, go to next step. If no, refer to «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM. Perform «POWERTRAIN VERIFICATION TEST VER-5»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__powertrain-verification-test-ver-5) under VERIFICATION TESTS.
2. With the DRBIII® scan tool, read DTCs and record the related Freeze Frame data specific to the CKP sensor signal (ECT, RPM, Sync state, vehicle speed, etc.). Turn the ignition off. With the DRBIII® scan tool as a lab scope and the Miller Special Tool (6801), backprobe the (K24) CKP sensor signal circuit at sensor harness connector. Ignition on, engine not running. Observe the lab scope screen. Start the engine. Observe the lab scope screen. Are there any irregular or missing signals? If yes, go to next step. If no, go to step 8 . WARNING: When the engine is operating, do not stand in a direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing.
3. Visually inspect the related wire harness including the ground circuit. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the relate wire harness connectors. Look for broken, bent, pushed out or corroded terminals. Ensure the Crankshaft Position Sensor and the Camshaft Position Sensor are properly installed and the mounting bolt(s) are tight. Refer to any TSBs that may apply. Were any of the above conditions present? If no, go to next step. If yes, repair as necessary. Perform «POWERTRAIN VERIFICATION TEST VER-5»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__powertrain-verification-test-ver-5) under VERIFICATION TESTS.
4. Turn the ignition off. Disconnect the CKP sensor harness connector. Turn the ignition on, engine not running. Measure the voltage of the (K6) 5-volt supply circuit. Is the voltage between 4.5-5.5 volts? If yes, go to next step. If no, repair the open or short to ground in the (K6) 5 volt supply circuit. Use Miller Special Tool (6801) when checking for an open circuit to prevent PCM harness connector terminal damage. Perform «POWERTRAIN VERIFICATION TEST VER-5»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__powertrain-verification-test-ver-5) under VERIFICATION TESTS.
5. Turn ignition off. Carefully disconnect Battery ground cable. Remove the Crankshaft Position Sensor. Inspect the tone wheel/flex plate slots for damage, foreign material, or excessive movement. Were any problems found? If no, go to next step. If yes, repair or replace the tone wheel/flex plate as necessary. Perform «POWERTRAIN VERIFICATION TEST VER-5»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__powertrain-verification-test-ver-5) under VERIFICATION TESTS.
6. Turn the ignition off. With the DRBIII® scan tool as a lab scope and the Miller Special Tool (6801), backprobe the (K44) CMP sensor signal circuit at sensor harness connector. Ignition on, engine not running. Wiggle the related wire harness and lightly tap on the Camshaft Position Sensor. Observe the lab scope screen. Start the engine. Observe the lab scope screen. Are there any irregular or missing signals? If yes, repair as necessary. Perform «POWERTRAIN VERIFICATION TEST VER-5»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__powertrain-verification-test-ver-5) under VERIFICATION TESTS. If no, go to next step.
7. If there are no possible causes remaining, replace the CKP sensor. Perform «POWERTRAIN VERIFICATION TEST VER-5»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__powertrain-verification-test-ver-5) under VERIFICATION TESTS.
8. Turn the ignition off. Disconnect the CKP sensor connector. Disconnect the PCM connector. Measure resistance in the (K24) CKP sensor signal circuit between the CKP sensor harness connector and the appropriate terminal of the special tool No. 8815. Wiggle the wire harness while taking this measurement. Is the resistance below 1.0 ohm? If yes, go to next step. If no, repair open or high resistance in the (K24) CKP sensor signal circuit. Perform «POWERTRAIN VERIFICATION TEST VER-5»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__powertrain-verification-test-ver-5) under VERIFICATION TESTS.
9. Turn the ignition off. Disconnect the PCM connector. Disconnect the CKP sensor connector. Measure resistance between ground and the (K24) CKP sensor signal circuit at the CKP sensor harness connector. Wiggle the related wire harness while monitoring resistance value. Does the resistance stay below 100 ohms? If no, go to next step. If yes, repair the short to ground in the (K24) CKP sensor signal circuit. Perform «POWERTRAIN VERIFICATION TEST VER-5»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__powertrain-verification-test-ver-5) under VERIFICATION TESTS.
10. Turn the ignition off. Disconnect the CKP sensor connector. Ignition on, engine not running. Measure the voltage on the (K24) CKP sensor signal circuit. Wiggle the related wire harness while taking this measurement. Does the voltage ever increase above 5.5 volts? If no, go to next step. If yes, repair the short to voltage in the (K24) CKP sensor signal circuit. Perform «POWERTRAIN VERIFICATION TEST VER-5»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__powertrain-verification-test-ver-5) under VERIFICATION TESTS.
11. Turn the ignition off. Disconnect the PCM harness connector. Disconnect the CKP sensor harness connector. Measure the resistance between the (K6) 5 volt supply circuit and the (K24) CKP sensor signal circuit at the CKP sensor harness connector. Wiggle the related wire harness while taking this measurement. Is the resistance below 5.0 ohms? If no, go to step 12. If yes, repair short to the (K6) 5 volt supply circuit in the (K24) CKP sensor signal circuit. Perform «POWERTRAIN VERIFICATION TEST VER-5»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__powertrain-verification-test-ver-5) under VERIFICATION TESTS.
12. If there are no possible causes remaining, replace PCM. Program the new PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) . Perform «POWERTRAIN VERIFICATION TEST VER-5»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__powertrain-verification-test-ver-5) under VERIFICATION TESTS.

DTC P0340: NO CAM SIGNAL AT PCM

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored when engine is cranking or running with battery voltage greater than 10.4 volts. DTC will set if at least 5 seconds or 2.5 engine revolutions have past with Crankshaft Position (CKP) sensor signals present but no signals from Camshaft Position (CMP) sensor.

1. Intermittent Crankshaft Position Sensor Signal
2. Intermittent Camshaft Position Sensor Signal
3. Intermittent Condition
4. (F888) 8-Volt Supply Circuit Shorted To Ground
5. (F888) 8-Volt Supply Circuit Open
6. (F888) 8-Volt Supply Circuit Shorted To Voltage
7. (K44) CMP Sensor Signal Circuit Shorted Ground
8. (K44) CMP Sensor Signal Circuit Open
9. (K44) CMP Sensor Signal Circuit Shorted To Voltage
10. (K44) CMP Sensor Signal Shorted To (F888) 8-Volt Supply Circuit
11. (K900) Sensor Ground Circuit Open
12. PCM
13. Camshaft Position Sensor

1. With the DRBIII® scan tool, read the current CMP state while cranking the engine. Does the DRBIII® scan tool display current CMP state present while cranking the engine? If yes, go to next step. If no, go to step 4 .
2. Turn the ignition off. With the DRBIII® scan tool as a lab scope and the Miller Special Tool (6801), backprobe the CKP sensor signal circuit in the Powertrain Control Module (PCM) harness connector. Turn the ignition on (do not start or crank the engine). Monitor the lab scope screen. Look for any pulses generated by the CKP sensor. Did the CKP sensor generate any pulses? If yes, replace the CKP sensor. If no, go to next step.
3. Turn the ignition off. With the DRBIII® scan tool as a lab scope and the Miller Special Tool (6801), backprobe the (K44) CMP sensor signal circuit in the PCM harness connector. Turn the ignition on (do not start or crank the engine). Monitor the lab scope screen. Look for any pulses generated by the CMP sensor. Did the CMP sensor generate any pulses? If yes, replace the CMP sensor. If no, go to next step.
4. Turn the ignition off. Disconnect the CMP sensor harness connector. Turn the ignition on. Measure the voltage of the (F888) 8-volt supply circuit in the CMP sensor harness connector. Is the voltage between 7.5-9.1 volts? If yes, go to next step. If no, go to step 12 .
5. Turn the ignition off. Disconnect the CMP harness connector. Turn the ignition on. Measure the voltage of the (K44) CMP sensor signal circuit in the CMP sensor harness connector. Is the voltage 4.5-5.0 volts? If yes, go to next step. If no, go to step 8 .
6. Turn the ignition off. Disconnect the CMP harness connector. Disconnect PCM harness connectors. Measure the resistance of the (K900) sensor ground circuit between the CMP sensor harness connector and the PCM harness connector. Is the resistance below 5 ohms? If yes, go to next step. If no, repair the (K900) sensor ground circuit for an open.
7. There are no possible causes remaining, replace the CMP sensor.
8. Turn the ignition off. Disconnect the CMP harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K44) CMP sensor signal circuit in the CMP sensor harness connector to ground. Is the resistance below 100 ohms? If yes, repair the (K44) CMP sensor signal circuit for a short to ground. If no, go to next step.
9. Turn the ignition off. Disconnect the CMP harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K44) CMP sensor signal circuit between the CMP sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (K44) CMP sensor signal circuit for an open.
10. Turn the ignition off. Disconnect the CMP sensor harness connector. Reconnect the PCM harness connectors. Turn the ignition on. Measure the voltage of the (K44) CMP sensor signal circuit in the CMP sensor harness connector. Is the voltage above 5.0 volts? If yes, repair the CMP sensor signal circuit for a short to voltage. If no, go to next step.
11. Turn the ignition off. Disconnect the CMP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance between the (K44) CMP sensor signal circuit and the (F888) 8-volt supply circuit in the CMP sensor harness connector. Is the resistance below 5.0 ohms? If yes, repair the (K44) CMP sensor signal circuit for a short to the (F888) 8-volt supply circuit. If no, go to step 15 .
12. Turn ignition off. Disconnect the CMP harness connector. Disconnect PCM harness connectors. Measure the resistance of the (F888) 8-volt supply circuit in the CMP sensor harness connector to ground. Is the resistance below 100 ohms? If yes, repair the 8-volt supply circuit for a short to ground. If no, go to next step.
13. Turn the ignition off. Disconnect the CMP harness connector. Disconnect the PCM harness connector. Measure the resistance of the (F888) 8-volt supply circuit between the CMP sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (F888) 8-volt supply circuit for an open.
14. Turn the ignition off. Disconnect the CMP harness connector. Reconnect the PCM harness connectors. Turn the ignition on. Measure the voltage of the (F888) 8-volt supply circuit in the CMP sensor harness connector. Is the voltage above 9.1 volts? If yes repair the (F888) 8-volt supply circuit for a short to battery voltage. If no, go to next step.
15. There are no possible causes remaining, replace PCM. Program the new PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0351: IGNITION COIL #1 PRIMARY CIRCUIT, DTC P0352: IGNITION COIL #2 PRIMARY CIRCUIT OR DTC P0353: IGNITION COIL #3 PRIMARY CIRCUIT

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Ignition coil primary circuit is monitored with battery voltage greater than 8 volts during engine cranking or greater than 13 volts with engine running at less than 3000 RPM, and no coils in dwell when checked. DTC will set if the Powertrain Control Module (PCM) senses peak current is not achieved with battery based dwell plus 1.5 milliseconds of diagnostic offset. DTC takes less than 3 seconds to set with engine cranking, or up to 6 seconds with engine running.

1. Good Trip Equal To Zero
2. Ignition Coil
3. Checking The BCM For DTC(s)
4. (A342) Auto Shutdown Relay Output Circuit
5. Ignition Coil Driver Circuit Open
6. Ignition Coil Driver Circuit Shorted To Ground
7. PCM

1. Turn ignition on, engine off. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition on. With the DRBIII® scan tool, check for DTC(s) in the BCM. Are any Ignition MUX circuit faults present? If yes, refer to the Body Communication Category and perform the appropriate symptom(s). If no, go to next step.
3. Turn the ignition off. Disconnect the ignition coil harness connector. Turn the ignition on. With the DRBIII® scan tool, actuate the ASD relay. Using a 12-volt test light connected to ground, check the (A342) ASD relay output circuit in the ignition coil harness connector. Does the test light illuminate brightly? If yes, go to next step. If no, repair the (K342) ASD relay output circuit.
4. Turn the ignition off. Disconnect the ignition coil harness connector. Using a 12-volt test light connected to 12-volts, ignition coil driver circuit. Crank the engine for 5 seconds while observing the test lamp. Does the test light illuminate brightly? If yes, replace the ignition coil. If no, go to next step.
5. Turn the ignition off. Disconnect the ignition coil harness connector. Disconnect the PCM harness connector. Measure the resistance of the ignition coil driver circuit between the ignition coil harness connector to the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open ignition coil driver circuit.
6. Turn the ignition off. Disconnect the ignition coil harness connector. Disconnect the PCM harness connector. Measure the resistance between ground and the ignition coil driver circuit in the ignition coil harness connector. Is the resistance below 100 k/ohms? If yes, repair the ignition coil driver circuit for a short to ground. If no, the test is complete.
7. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0420: 1/1 CATALYTIC CONVERTER EFFICIENCY

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Catalytic converter efficiency is monitored after engine warms up to 158°F (70°C), throttle has been open for 180 seconds when vehicle speed is 18-55 MPH, with engine speed at 1200-1700 RPM and MAP vacuum 15.0-21.0 in. Hg. DTC will set when powertrain control module senses catalyst efficiency deteriorated to a predetermined value.

1. Good Trip Equal To Zero
2. Visually Inspect Catalytic Converter
3. Exhaust Leak
4. Engine Mechanical Condition
5. Aging O2 Sensor
6. Catalytic Converter

Note. If a O2 sensor DTC is also set, diagnose O2 sensor DTC before continuing. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . Also, check for contaminants that may have damaged O2 sensor and catalytic converter such as contaminated fuel, unapproved silicone, oil and coolant. Repair as necessary

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Inspect the catalytic converter that is related to the DTC for dents, holes and severe discoloration caused by overheating the catalytic converter. Also check if catalytic converter is broken internally or leaking. Were any problems found? If yes, replace the catalytic converter. Repair the condition that may have caused the failure. If no, go to next step.
3. Start the engine. Inspect the exhaust for leak between the engine and the O2 sensor. Inspect the exhaust for leaks between the engine and the appropriate rear O2 sensor. Are there any exhaust leaks? If yes, repair or replace the leaking exhaust parts as necessary. If no, go to next step.
4. Check the exhaust for excessive smoke caused by an internal problem in the engine. Is a engine mechanical condition present? If yes, repair the engine mechanical condition as necessary. If no, go to next step.
5. A new rear O2 sensor along with an aging front O2 sensor may cause the DTC to set. Review the vehicles repair history. Has the rear O2 sensor been replace without replacing the front O2 sensor? If yes, replace the front O2 sensor as necessary. If no, go to next step.
6. There are no other possible causes remaining, replace the Catalytic Converter.

DTC P0441: EVAP PURGE FLOW MONITOR

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

EVAP purge flow is monitored after engine warms to greater than 160°F (71°C), fuel control in closed loop mode, after engine has been idling for 200 seconds, fuel level is not low, Manifold Absolute Pressure (MAP) less than 23.6 in. Hg and altitude less than 8000 feet. DTC will set when powertrain control module senses no airflow through EVAP system after Leak Detection Pump (LDP) test has been passed.

1. Good Trip Equal To Zero
2. EVAP Purge Solenoid Leaks/Stuck Open
3. EVAP Purge Solenoid Stuck Closed
4. EVAP Purge Solenoid Vacuum Supply
5. EVAP Purge Hose Solenoid To Canister
6. EVAP Purge Hose Canister To Fuel Tank
7. EVAP Canister

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the vacuum hoses at the EVAP purge solenoid. Using a hand vacuum pump, apply 10 in. Hg of vacuum to the EVAP purge solenoid vacuum source port on the component side. Does the EVAP purge solenoid hold vacuum? If yes, go to next step. If no, replace the EVAP purge solenoid.
3. Using a hand vacuum pump, apply 10 in. Hg of vacuum to the EVAP purge solenoid vacuum source port on the component side. Turn the ignition on. Observe the vacuum gauge. With the DRBIII® scan tool, actuate the EVAP purge solenoid. Does the vacuum drop when the solenoid is actuated? If yes, go to next step. If no, replace the EVAP purge solenoid.
4. Turn the ignition off. Carefully inspect the EVAP purge solenoid vacuum supply hose for proper routing. Check for a pinched or plugged hose from the throttle body to the purge solenoid. Inspect the vacuum port at the throttle body for any damage or plugging. Were any problems found? If yes, repair the vacuum supply hose/tube as necessary. If no, go to next step.
5. Visually inspect the EVAP purge hose from the EVAP purge solenoid to the EVAP canister. Look for any physical damage such as a pinched, plugged, ripped or dry rotted hose. Were any problems found? If yes, repair or replace hose as necessary. If no, go to next step.
6. Visually inspect the EVAP purge hose from between the EVAP canister and the fuel tank. Check for any physical damage such as a pinched, plugged, ripped or dry rotted hose. Were any problems found? If yes, repair or replace hose as necessary. If no, go to next step.
7. Visually inspect the EVAP canister for any physical damage or signs of fuel that has entered the canister. Fuel inside EVAP canister may indicate a bad rollover valve. Were any problems found? If yes, repair or replace as necessary. If no, test is complete.

DTC P0442: EVAP LEAK MONITOR MEDIUM (.040) LEAK DETECTED, DTC P0455: EVAP LEAK MONITOR LARGE LEAK DETECTED OR DTC P0456: EVAP LEAK MONITOR SMALL LEAK (.020) DETECTED

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-6 under VERIFICATION TESTS to ensure system is functioning properly.

EVAP leak monitor is monitored immediately after a cold start, with battery/ambient temperature 40-90°F (4.4-32.2°C), engine coolant temperature within 10°F of battery/ambient temperature. DTC P0442 will set when Powertrain Control Module (PCM) senses a leak of 0.040-0.080" (1.02-2.03 mm) in EVAP system. DTC P0455 will set when PCM senses a leak larger than 0.080" (2.03 mm) in EVAP system. DTC P0456 will set when PCM senses a leak of 0.020-0.040" (0.51-1.02 mm) in EVAP system.

1. Good Trip Equal To Zero
2. Verify Evaporative Emission System Leak
3. Evaporative Emission Leak Detection
4. EVAP Purge Solenoid Leaks/Stuck Open
5. Intermittent LDP Monitor Failure

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. To continue testing you will need Miller Evaporative Emission Leak Detector (8404). The fuel tank should have between 20-80 percent of fuel tank capacity to properly test the EVAP system. Disconnect the vacuum supply hose at the leak detection pump. Connect and apply a continuous vacuum supply (i.e. 20 in. Hg) to the leak detection pump. A vacuum pump such as an A/C recovery unit works well. Using the DRBIII® scan tool, select Engine/System Tests and actuate the Leak Detect Pump Test (Option 3/Hold PSI). This energizes the LDP solenoid and allows the constant vacuum source to apply vacuum to the LDP pump diaphragm. This lifts the diaphragm up and seals the atmospheric canister vent valve at the bottom of the leak detection pump. Connect the Red power lead of Miller evaporative emission leak detector to the battery positive terminal and the Black ground lead to battery negative terminal. Connect shop air to the evaporative emission leak detector. Set the smoke/air control switch to AIR. Insert the tester's AIR supply tip (clear hose) into the appropriate calibration orifice on the tester's control panel (based on DTC leak size). Press the remote smoke/air start button. Position the Red flag on the air flow meter so it is aligned with the indicator ball. When the calibration is complete, release the remote button. The evaporative emission leak detector has now calibrated the flow meter in liters per minute to the size leak indicated by the DTC set in the PCM. Install the service port adapter (8404-14) on the vehicle's service port. Connect the air supply hose from the evaporative emission leak detector to the service port. Press the remote button to activate AIR flow. Larger volume fuel tanks, and/or those with less fuel, may require 4 to 5 minutes to fill. Compare the flow meter indicator ball reading to the Red flag. ABOVE the Red flag indicates a leak present. BELOW the Red flag indicates a sealed system. Is the indicator ball above the Red flag? If yes, go to next step. If no, go to step 5 .
3. To continue testing, you will need Miller Evaporative Emissions Leak Detector (8404). Remove the air supply hose from the service port. Connect the smoke supply tip (Black hose) to the service port. Set the smoke/air control switch to smoke. The flow meter indicator ball will not move at this point. Press the remote smoke/air start button. Ensure that smoke has filled the EVAP system by continuing to press the remote smoke/air start button, remove the vehicle fuel cap, and wait for the smoke to exit. Once smoke is indicated, reinstall the fuel cap. For optimal performance, introduce smoke into the system for an additional 60 seconds; continue introducing smoke at 15 second intervals, as necessary. While still holding the remote smoke/air start button, use the White light (8404-CLL) to follow the EVAP system path, and look for the source of the leak indicated by exiting smoke. If a leak is concealed from view (i.e., top of fuel tank), release the remote smoke/air start button, and use the Ultra Violet (UV) Black light (8404-UVL) and the Yellow Goggles (8404-20) to look for residual traces of dye that is left behind by the smoke. The exiting smoke deposits a residual fluid that is either bright Green or bright Yellow in color when viewed with a UV light. Was a leak found? If yes, repair or replace the leaking component as necessary. If no, go to next step.
4. Turn the ignition off. Disconnect the vacuum hoses at the EVAP purge solenoid. Using a hand vacuum pump, apply 10 in. Hg of vacuum to the EVAP purge solenoid vacuum source port on the component side. Monitor the vacuum gauge for at least 15 seconds. Does the EVAP purge solenoid hold vacuum? If yes, go to next step. If no, replace the EVAP purge solenoid.
5. At this time, the conditions required to set the DTC are not present. Use the Freeze Frame Data to help you duplicate the conditions that set the DTC. Pay particular attention to the DTC set conditions, such as, VSS, MAP, ECT, and load. A thorough visual inspection of the EVAP system hoses, tubes, and connections may save time in your diagnosis. Look for any physical damage or signs of wetness at connections. The strong smell of fuel vapors may aid diagnosis also. Refer to any Technical Service Bulletins (TSB) that may apply. With the DRBIII® scan tool in System Tests, perform the LDP Monitor Test. This will force the PCM to run the LDP Monitor. If the monitor fails, further diagnosis is required to find faulty component. If the monitor passes, the condition is not present at this time. Were any problems found? If yes, repair as necessary. If no, test is complete.

DTC P0443: EVAP PURGE SOLENOID CIRCUIT

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored when ignition is on and battery voltage is greater than 10 volts. DTC will set if actual state of EVAP purge solenoid does not match the intended state within 0.5 seconds.

1. Good Trip Equal To Zero
2. (K52) EVAP Purge Solenoid Control Circuit Open
3. (K52) EVAP Purge Solenoid Control Circuit Shorted To Ground
4. (K70) EVAP Purge Solenoid Sense Circuit Open
5. (K70) EVAP Purge Solenoid Sense Circuit Shorted To Ground
6. EVAP Purge Solenoid
7. PCM

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the EVAP purge solenoid harness connector. Measure the resistance between the terminals of the EVAP purge solenoid. Is the resistance between 10.0 and 15.0 ohms? If yes, go to next step. If no, replace the EVAP purge solenoid.
3. Turn the ignition off. Disconnect the EVAP purge solenoid harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K52) EVAP purge solenoid control circuit from the PCM harness connector to the EVAP purge solenoid harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (K52) EVAP purge solenoid control circuit for an open.
4. Turn the ignition off. Disconnect the EVAP purge solenoid harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K52) EVAP purge solenoid control circuit in the EVAP purge solenoid harness connector to ground. Is the resistance below 5.0 ohms? If yes, repair the (K52) EVAP purge solenoid control circuit for a short to ground. If no, go to next step.
5. Turn the ignition off. Disconnect the EVAP purge solenoid harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K70) EVAP purge solenoid sense circuit from the PCM harness connector to the EVAP purge solenoid harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (K70) EVAP purge solenoid sense circuit for an open.
6. Turn the ignition off. Disconnect the EVAP purge solenoid harness connector. Disconnect the PCM harness connector. Measure the resistance between ground and the (K70) EVAP purge solenoid sense circuit at the EVAP purge solenoid harness connector. Is the resistance below 5.0 ohms? If yes, repair the EVAP purge solenoid sense circuit for a short to ground. If no, go to next step.
7. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0460: FUEL LEVEL SENDING UNIT NO CHANGE OVER MILES

Note. Fuel level sending unit may also be referred to as fuel level sensor. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Fuel level is monitored in 2 tests. Test one is with ignition on, the fuel level is compared to the previous key down after a 20 second delay. Test 2, the Powertrain Control Module (PCM) monitors the fuel level at ignition on. In test one, if the PCM does not see a difference in fuel level of greater than 0.1 volt with ignition on, the test will fail. In test 2, if the PCM does not see a change in the fuel level of 0.1765 volt over a set amount of miles, the test will fail.

1. Good Trip Equal To Zero
2. Visually Inspect Fuel Tank
3. (N4) Fuel Level Sensor Signal Circuit Shorted To Ground
4. (N4) Fuel Level Sensor Signal Circuit Open
5. (Z201) Ground Circuit Open
6. Fuel Level Sensor

Note. Diagnose DTC P0462 or P0463 first, if set along with P0460. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . Inspect the fuel pump module harness connector for any corrosion or damage.

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Visually inspect the fuel tank for damage that may restrict the fuel sending unit float from moving. Is the fuel tank okay? If yes, go to next step. If no, replace the fuel tank as necessary.
3. Turn the ignition off. Disconnect the fuel pump module harness connector. Disconnect the BCM harness connector. Measure the resistance of the (N4) fuel level sensor signal circuit between the fuel pump module harness connector and the BCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (N4) fuel level sensor signal circuit for an open.
4. Turn the ignition off. Disconnect the fuel pump module harness connector. Measure the resistance of the (N4) fuel level sensor signal circuit in the fuel pump module harness connector to ground. Is the resistance below 100 ohms? If yes, repair the fuel level sensor signal circuit for a short to ground. If no, go to next step.
5. Turn the ignition off. Disconnect the fuel pump module harness connector. Using a 12-volt test light connected to battery voltage, probe the (Z201) ground circuit in the fuel pump module harness connector. Does the test lamp illuminate brightly? If yes, go to next step. If no, repair the (Z201) ground circuit for an open.
6. Release fuel pressure. See «FUEL SYSTEM PRESSURE RELEASE»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__fuel-system-pressure-release) . Remove the fuel tank. See «FUEL SYSTEMS»(/dodge/grand-caravan/iv-2000-2007/remont/removal-installation/#how-to-overhaul-installation-the-engine-controls-removal__fuel-systems) in REMOVAL & INSTALLATION - CARAVAN, TOWN & COUNTRY, & VOYAGER article. Remove the fuel pump module. Visually inspect the inside of the fuel tank for any obstructions or deformities. Inspect the fuel pump module float arm for damage. Were any problems found? If yes, repair or replace as necessary. If no, go to next step.
7. There are no possible causes remaining, replace the fuel level sensor.

DTC P0462: FUEL LEVEL SENDING UNIT VOLTS TOO LOW OR DTC P0463: FUEL LEVEL SENDING UNIT VOLTS TOO HIGH

Note. Fuel level sending unit may also be referred to as fuel level sensor. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Fuel level sensor voltage is monitored with ignition on and battery voltage above 10.4 volts. DTC P0462 will set when fuel level sensor signal voltage is less than 0.4 volt for more than 90 seconds. DTC P0463 will set when fuel level sensor signal voltage is more than 9.9 volts for more than 90 seconds.

1. Good Trip Equal To Zero
2. Intermittent Condition

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, identify fault symptom and perform appropriate test. See INSTRUMENT CLUSTER under SYSTEM TESTS in the «BODY DIAGNOSTIC PROCEDURES»(/dodge/grand-caravan/iv-2000-2007/remont/collisionavoidance/#body-diagnostic-procedures) article in ACCESSORIES & EQUIPMENT. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.

DTC P0500: NO VEHICLE SPEED SENSOR SIGNAL (3SP AUTO & MANUAL TRANSMISSIONS)

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Vehicle Speed Sensor (VSS) signal is monitored with engine running, transaxle not in Park or Neutral, brakes not applied and engine speed greater than 1800 RPM. DTC will set if no vehicle speed signal is received from the Transmission Control Module (TCM) for more than 7.2 seconds for 2 consecutive trips.

1. Vehicle Speed Sensor Operation
2. (F888) 8-Volt Supply Circuit Open
3. (N7) VSS Signal Shorted To Ground
4. (N7) VSS Signal Open
5. PCM
6. (K900) Sensor Ground Circuit Open
7. Vehicle Speed Sensor

1. Raise the drive wheels off the ground. Start the engine. With the DRBIII® scan tool, monitor the vehicle speed sensor. Place the transmission in any forward gear. Allow the wheels to rotate. Does the DRBIII® scan tool display vehicle speed above 0 MPH? If yes, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM. If no, go to next step.
2. Turn the ignition off. Disconnect the vehicle speed sensor harness connector. Turn the ignition on. Measure the voltage of the (F888) 8-Volt supply circuit in the VSS harness connector. Is the voltage above 7.0 volts? If yes, go to next step. If no, repair the open in the (F888) 8-Volt supply circuit.
3. Turn the ignition off. Disconnect the vehicle speed sensor harness connector. Turn the ignition on. Measure the voltage of the (N7) vehicle speed sensor signal circuit in the VSS harness connector. Is the voltage between 4.5 to 5.0 volts? If yes, go to next step. If no, go to step 5 .
4. Turn the ignition off. Disconnect the vehicle speed sensor harness connector. Measure the resistance of the (K900) sensor ground circuit between the VSS harness connector and ground. Is the resistance below 5.0 ohms? If yes, remove and inspect the pinion gear. If OK, replace the vehicle speed sensor. If no, repair the open in the (K900) sensor ground circuit.
5. Turn the ignition off. Disconnect the vehicle speed sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (N7) VSS signal circuit between the VSS harness connector and the PCM harness connector. Is the resistance below 5 ohms? If yes, go to next step. If no, repair the open in the (N7) VSS signal circuit.
6. Turn the ignition off. Disconnect the vehicle speed sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (N7) VSS signal circuit in the VSS harness connector to ground. Is the resistance below 100 ohms? If yes, repair the short to ground in the (N7) VSS signal circuit. If no, go to next step.
7. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. If there are no possible causes remaining, replace PCM. Program the new PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0500: NO VEHICLE SPEED SENSOR SIGNAL (4SP AUTO TRANSMISSIONS)

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Vehicle Speed Sensor (VSS) signal is monitored with engine running, transmission not in neutral, brakes not applied and engine speed greater than 1800 RPM. DTC will set if no vehicle speed signal is received from the Transmission Control Module (TCM) for more than 7.2 seconds for 2 consecutive trips.

1. Good Trip Equal To Zero
2. (N7) VSS Signal Shorted To Voltage
3. VSS Signal From TCM
4. (N7) VSS Signal Shorted To Ground

Note. Before continuing check pinion factor with scan tool. If pinion factor is not correct, reset and retest vehicle.

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the TCM harness connector. Turn the ignition on. Measure the voltage of the (N7) VSS signal circuit in the TCM harness connector. Is the voltage above 6.0 volts? If yes, repair the (N7) VSS signal circuit for a short to voltage. If no, go to next step.
3. Turn the ignition off. Disconnect the TCM harness connector. Turn the ignition on. Connect a jumper wire to the (N7) VSS signal circuit in the TCM harness connector. With the DRBIII® scan tool, monitor the vehicle speed signal display. Tap the other end of the jumper wire rapidly to ground. Does the vehicle speed signal display the MPH/KMH above zero? If yes, go to next step. If no, replace the TCM. Reprogram pinion factor and perform shift quality quick learn procedure. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION.
4. Turn the ignition off. Disconnect the Powertrain Control Module (PCM) harness connector. Disconnect the TCM harness connector. Measure the resistance of the (N7) VSS signal circuit in the PCM harness connector to ground. Is the resistance below 100 ohms? If yes, repair the (N7) VSS signal circuit for a short to ground. If no, go to next step.
5. Turn the ignition off. Disconnect the PCM harness connector. Disconnect the TCM harness connector. Measure the resistance of the (N7) VSS signal circuit between the PCM harness connector and the TCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (N7) VSS signal circuit for an open
6. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. If there are no possible causes remaining, replace PCM. Program the new PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0508: IAC VALVE SENSE CIRCUIT LOW

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

IAC valve sense circuit is monitored with the engine running. Battery voltage greater than 10 volts. DTC will set when the IAC sense circuit is less than 146.33 milliamps for 500 milli seconds.

1. Intermittent Condition
2. IAC Motor
3. IAC Motor Driver Circuit Shorted To Ground
4. IAC Motor Sense Circuit Open
5. IAC Motor Sense Circuit Shorted To Ground
6. IAC Motor Driver Circuit Open
7. PCM

1. Start the engine. Allow the engine to idle. If the engine will not idle, maintain an engine speed between 800-1500 RPM. With the DRBIII® scan tool, read the IAC current. Is the IAC current below 146 milliamps? If yes, go to next step. If no, see «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the IAC motor harness connector. Remove the IAC motor. Inspect the IAC air passages for restriction and damage to the IAC valve. Measure the resistance across the IAC motor pin terminals (component). Is the resistance within 8.7-10.7 ohms? If yes, go to next step. If no, replace the IAC motor.
3. Turn the ignition off. Disconnect the IAC motor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the IAC motor sense circuit from the PCM harness connector to the IAC motor harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the IAC sense circuit.
4. Turn the ignition off. Disconnect the IAC motor harness connector. Disconnect the PCM harness connectors. Measure the resistance of IAC motor sense in the IAC motor harness connector to ground. Is the resistance below 5.0 ohms? If yes, repair the short to ground in the IAC motor sense circuit. If no, go to next step.
5. Turn the ignition off. Disconnect the IAC motor harness connector. Disconnect the PCM harness connectors. Measure the resistance of IAC motor driver circuit from the PCM harness connector to the IAC motor harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the IAC motor driver circuit.
6. Turn the ignition off. Disconnect the IAC motor harness connector. Disconnect the PCM harness connectors. Measure the resistance of IAC motor driver circuit in the IAC motor harness connector to the ground. Is the resistance below 100 ohms? If yes, repair the short to ground in the IAC motor driver circuit. If no, go to next step.
7. Before continuing, disconnect the PCM harness connector and check the related wiring terminals for corrosion, damage or terminal push out. Repair as necessary. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0509: IAC VALVE SENSE CIRCUIT HIGH

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

IAC valve sense circuit is monitored with the engine running. Battery voltage greater than 10 volts. DTC is set when the IAC sense circuit is greater than 999.9 milliamps for 500 milli seconds.

1. Intermittent Condition
2. IAC Motor
3. IAC Motor Sense Circuit Shorted To Voltage
4. IAC Motor Driver Circuit Shorted To Voltage
5. IAC Motor Sense Circuit Shorted To IAC Motor Driver Control Circuit
6. PCM

1. Start the engine. Allow the engine to idle. If the engine will not idle, maintain an engine speed between 800-1500 RPM. With the DRBIII® scan tool, read the IAC current. Is the IAC current above 999 milliamps? If yes, go to next step. If no, see «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the IAC motor harness connector. With the DRBIII® scan tool, monitor the IAC current. Turn the ignition on. Does the DRBIII® scan tool display IAC current at zero milliamps? If yes, replace the IAC motor. If no, go to next step.
3. Turn the ignition off. Disconnect the IAC motor harness connector. Turn the ignition on. With the DRBIII® scan tool, actuate the ASD relay. Measure the voltage of the IAC motor sense circuit in the IAC motor harness connector. Is the voltage above 0.5 of a volt? If yes, repair the short to voltage in the IAC motor sense circuit. If no, go to next step.
4. Turn the ignition off. Disconnect the IAC motor harness connector. Turn the ignition on. With the DRBIII® scan tool, actuate the ASD relay. Measure the voltage of the IAC motor driver circuit in the IAC motor harness connector. Is the voltage above 0.5 of a volt? If yes, repair the short to voltage in the IAC motor driver circuit. If no, go to next step.
5. Turn the ignition off. Disconnect the IAC motor harness connector. Measure the resistance across the IAC motor harness connector. Is the resistance below 5.0 ohms? If yes, repair the IAC motor driver circuit short to the IAC motor sense circuit. If no, go to next step.
6. Before continuing, disconnect the PCM harness connector and check the related wiring terminals for corrosion, damage or terminal push out. Repair as necessary. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P0600: PCM FAILURE SPI COMMUNICATIONS OR DTC P0601: INTERNAL CONTROLLER FAILURE

Note. For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-1 under VERIFICATION TESTS to ensure system is functioning properly.

Communication between processors over internal BUS and internal controller operation are monitored with ignition on. DTC P0600 will set if Powertrain Control Module (PCM) senses bus communication failure between processors. DTC P0601 will set if PCM senses internal checksum for software failed and does not match calculated value.

1. PCM Internal Or SPI

The PCM is reporting internal errors. Replace PCM. Program the new PCM. See PROGRAMMING .

DTC P0645: A/C CLUTCH RELAY CKT

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-2 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored with ignition on, A/C on and battery voltage greater than 10.4 volts. DTC will set if an open or short condition is detected in the A/C clutch relay control circuit.

1. A/C Clutch Relay Operation
2. Fused Ignition Switch Output Circuit
3. Integrated Power Module
4. A/C Clutch Relay
5. IPM Fuse & Relay Center
6. (C13) A/C Clutch Relay Control Circuit Open
7. (C13) A/C Clutch Relay Control Circuit Short To Ground
8. PCM

Note. A/C compressor clutch relay may also be referred to as A/C clutch relay.

1. Turn the ignition on. With the DRBIII® scan tool, actuate the A/C clutch relay. Is the A/C clutch relay operating? If yes, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM. If no, go to next step.
2. Turn the ignition off. Remove the A/C clutch relay from the IPM. Turn the ignition on. Using a 12-volt test light connected to ground, probe the fused ignition switch circuit in the IPM. Does the test light illuminate? If yes, go to next step. If no, go to step 8 .
3. Turn the ignition off. Remove the A/C clutch relay from the IPM. Turn the ignition on. Using a 12-volt test light connected to 12-volts, probe the A/C clutch relay control circuit in the IPM. With the DRBIII® scan tool, actuate the A/C clutch relay. Does the test light flash on and off? If yes, replace the A/C clutch relay. If no, go to next step.
4. Turn the ignition off. Disconnect the integrated power module C3 harness connector. Turn the ignition on. Using a 12-volt test light connected to 12-volts, probe the A/C clutch relay control circuit in the IPM harness connector. With the DRBIII® scan tool, actuate the A/C clutch relay. Does the test light flash on and off? If yes, replace the IPM fused and relay center. If yes, go to next step.
5. Turn the ignition off. Disconnect the integrated power module C3 harness connector. Disconnect the PCM harness connector. Measure the resistance of the (C13) A/C clutch relay control circuit between the integrated power module C3 harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (C13) A/C clutch relay control circuit for an open.
6. Turn the ignition off. Disconnect the integrated power module C3 harness connector. Disconnect the PCM harness connector. Measure the resistance of the (C13) A/C clutch relay control circuit in the integrated power module C3 harness connector to ground. Is the resistance below 5.0 ohms? If yes, repair the (C13) A/C clutch relay control circuit for a short to ground. If no, go to next step.
7. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits. If there are no possible causes remaining, replace PCM. Program the new PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .
8. Turn the ignition off. Disconnect the integrated power module C3 harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, probe the fused ignition switch circuit in the IPM harness connector. Does the test light illuminate? If yes, replace the IPM fuse and relay center. If no, repair the fused ignition switch output circuit for an open.

System is monitored with ignition on. This DTC is an indicator that a transmission DTC has previously been set.

1. DTC Present In EATX Controller

A DTC was registered in the Transmission Control Module (TCM). With the DRBIII® scan tool, go to the TCM and read codes. See appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.

DTC P0703: BRAKE SWITCH SENSE CIRCUIT

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-4 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored in 2 tests. Test #1: Vehicle speed must be greater than 17 MPH to enable. TEST #2: Speed must be zero MPH and brake switch indicate on. DTC will set in Test #1 if vehicle speed goes to zero MPH without brake input. Condition must be repeated 9 times to set fault. DTC will set in Test #2 if vehicle speed goes above 17 MPH for more than 6.4 seconds without a change in brake state. Condition must be repeated 9 times to set fault.

1. Good Trip Equal To Zero
2. Fused B+ Circuit
3. Brake Switch Sense Circuit Shorted To Voltage
4. Brake Switch Sense Circuit Shorted To Ground
5. Brake Switch Sense Circuit Open
6. Ground Circuit Open
7. Brake Lamp Switch Operation
8. PCM

Note. Ensure the brake switch is adjusted properly before continuing.

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the brakelight switch harness connector. Using a 12-volt test light connected to ground, check the fused B+ circuit in the brakelight switch harness connector. Does the test light illuminate brightly? If yes, go to next step. If no, repair the open in fuse B+ circuit.
3. Turn the ignition off. Disconnect the brakelight switch harness connector. Disconnect the Powertrain Control Module (PCM) harness connector. Remove the ASD relay from the PDC. Using a jumper wire between the fused B+ circuit and the ASD relay output circuit in the PDC. Turn the ignition on. Measure the voltage of the brake switch sense circuit in the brake lamp switch harness connector. Is the voltage above 1.0 volts. If yes, repair the brake switch sense circuit that is shorted to voltage. If no, go to next step.
4. Turn the ignition off. Disconnect the brake lamp switch harness connector. Disconnect the PCM harness connector. Measure the resistance of the brake switch sense circuit in the brake lamp switch harness connector to ground. Is the resistance below 5.0 ohms? If yes, repair the brake switch sense circuit shorted to ground. If no, go to next step.
5. Turn the ignition off: Disconnect the brake lamp switch harness connector. Disconnect the PCM harness connector. Measure the resistance of the brake switch sense circuit between the brake lamp switch harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the brake switch sense circuit for an open.
6. Turn the ignition off. Disconnect the brake lamp switch harness connector. Measure the resistance of the ground circuit in the brake lamp switch harness connector to ground. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the ground circuit for an open.
7. Turn the ignition off. Disconnect the brake lamp switch harness connector. Measure the resistance between the ground circuit terminal and the brake switch sense terminal in the brake lamp switch. Monitor brake switch sense with the DRBIII® scan tool. Does the resistance change from below 5.0 ohms to open circuit? If yes, go to next step. If no, replace the brake lamp switch.
8. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P1192: INLET AIR TEMP SENSOR VOLTAGE LOW

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored with ignition on and battery voltage greater than 10.4 volts. DTC will set when Inlet Air Temperature (IAT) sensor voltage is less than 0.098 volt for 5 seconds.

1. IAT Sensor Voltage Below 1.0 Volt
2. IAT Sensor Internal Failure
3. (K21) IAT Sensor Signal Shorted To Ground
4. (K21) IAT Sensor Signal Shorted To (K900) Sensor Ground Circuit
5. PCM

1. Turn the ignition on. With the DRBIII® scan tool, read the IAT voltage. Is the voltage below 1.0 volt? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the IAT harness connector. Turn the ignition on. With the DRBIII® scan tool, read IAT voltage. Is the voltage above 1.0 volt? If yes, replace the IAT sensor. If no, go to next step.
3. Turn the ignition off. Disconnect the IAT harness connector. Disconnect the Powertrain Control Module (PCM) harness connector. Measure the resistance of the IAT sensor signal circuit between the IAT sensor harness connector and ground. Is the resistance below 100 ohms? If yes, repair the (K21) IAT sensor signal circuit for a short to ground. If no, go to next step.
4. Turn the ignition off. Disconnect the IAT harness connector. Disconnect the PCM harness connector. Measure the resistance between the (K21) IAT sensor signal circuit and the (K900) sensor ground circuit in the IAT sensor harness connector. Is the resistance below 100 ohms? If yes, repair the (K21) IAT sensor signal circuit for a short to the (K900) sensor ground circuit. If no, go to next step.
5. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P1193: INLET AIR TEMP SENSOR VOLTAGE HIGH

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored with ignition on and battery voltage greater than 10.4 volts. DTC will set if the Inlet Air Temperature (IAT) sensor voltage goes above 4.9 volts for 5 seconds.

1. IAT Sensor Voltage Above 4.6 Volts
2. (K21) IAT Sensor Signal Circuit Shorted To Voltage
3. IAT Sensor Internal Failure
4. (K21) IAT Sensor Signal Circuit Open
5. (K900) Sensor Ground Circuit Open
6. PCM

1. Turn the ignition on. With the DRBIII® scan tool, read the IAT voltage. Is the voltage above 4.6 volts? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the IAT sensor harness connector. Turn the ignition on. Measure the voltage of the (K21) IAT sensor signal circuit in the IAT sensor harness connector. Is the voltage above 5.2 volts? If yes, repair the IAT sensor signal circuit for a short to battery voltage. If no, go to next step.
3. Turn the ignition off. Disconnect the IAT harness connector. Connect a jumper wire between the IAT sensor signal circuit and the sensor ground circuit in the IAT harness connector. Turn the ignition on. With the DRBIII® scan tool, read IAT voltage. Is the voltage below 1.0 volt? If yes, replace the IAT sensor. If no, go to next step.
4. Turn the ignition off. Disconnect the IAT sensor harness connector. Disconnect the Powertrain Control Module (PCM) harness connector. Measure the resistance of the (K21) IAT sensor signal circuit between the IAT sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (K21) IAT sensor signal circuit for an open.
5. Turn the ignition off. Disconnect the IAT sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K900) sensor ground circuit between the IAT sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (K900) sensor ground circuit for an open.
6. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P1195: 1/1 O2 SENSOR SLOW DURING CATALYST MONITOR

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored with engine running, coolant temperature greater than 158°F (70°C), open throttle, vehicle speed steady or slightly increasing between 18 and 55 MPH and engine under light load for at least 5 minutes. DTC will set if the O2 sensor is switching from less than 0.39 volt to greater than 0.6 volt and back fewer times than required.

1. Good Trip Equal To Zero
2. Exhaust Leak
3. O2 Sensor Signal Circuit Voltage Drop
4. O2 Sensor Ground Circuit Voltage Drop
5. O2 Sensor

1. Turn ignition on, engine not running. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Start the engine. Inspect the exhaust for leaks between the engine and the O2 sensor. Inspect the exhaust for leaks between the engine and the appropriate rear O2 sensor. Are there any exhaust leaks? If yes, repair or replace the leaking exhaust parts as necessary. If no, go to next step.
3. Backprobe the O2 sensor signal circuit at the O2 sensor harness connector and the Powertrain Control Module (PCM) harness connector. Start the engine. Allow the engine to idle. Is the voltage below 0.10 volt? If yes, go to next step. If no, repair the high resistance on the O2 sensor signal circuit.
4. Backprobe the O2 sensor ground circuit at the O2 sensor harness connector and the PCM harness connector. Start the engine. Allow the engine to idle. Is the voltage below 0.10 volt? If yes, go to next step. If no, repair the high resistance on the O2 sensor ground circuit.
5. There are no possible causes remaining, replace the O2 sensor

Engine coolant temperature is monitored when engine is running. DTC will set if engine does not warm to 160°F (71°C) after driving with throttle open for 27 minutes since engine was started.

Cooling System Problem

Note. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Note. The best way to diagnose this DTC is to allow the vehicle to remain outside overnight in order to have a completely cold soaked engine. Extremely cold outside ambient temperatures may cause this DTC to set.

Check coolant level. Add coolant if necessary. Ensure the ECT sensor is operating correctly. Start the engine. With the DRBIII® scan tool, monitor the ECT value during the warm up cycle. Make sure the transition of the temperature change is smooth. Did the engine temperature reach a minimum of 71°C (160°F)? If yes, test is complete. If no, check thermostat and cooling system for probable causes. Refer to the service information for cooling system performance diagnosis. The most probable cause is a thermostat problem. Also, refer to any related Technical Service Bulletins (TSB). Repair as necessary.

DTC P1282: FUEL PUMP RELAY CONTROL CIRCUIT

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored with ignition on and battery voltage more than 10.4 volts. DTC will set if an open or short condition is detected in the fuel pump relay control circuit.

1. Fuel Pump Relay Operation
2. Fuel Pump Relay
3. (K31) Fuel Pump Relay Control Circuit Open
4. (K31) Fuel Pump Relay Control Circuit Short To Ground
5. (F12) Fused Ignition Switch Output Circuit
6. PCM

1. Ignition on, engine not running. With the DRBIII® scan tool, read DTCs and record the related freeze frame data. With the DRBIII® scan tool, actuate the fuel pump relay. Is the fuel pump relay clicking? If yes, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM. If no, go to next step.
2. Turn the ignition off. Remove the fuel pump relay. Check connectors, clean/repair as necessary. Measure the resistance between terminals 1 (85) and 2 (86) of the fuel pump relay. Is the resistance between 50 and 90 ohms? If yes, go to next step. If no, replace the fuel pump relay.
3. Turn the ignition off. Remove the fuel pump relay from the IPM. Disconnect the PCM harness connectors. Measure the resistance of the (K31) fuel pump relay control circuit from the fuel pump relay connector to the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the (K31) fuel pump relay control circuit.
4. Turn the ignition off. Remove the fuel pump relay from the IPM. Disconnect the PCM harness connectors. Measure the resistance between ground and the (K31) fuel pump relay control circuit. Is the resistance below 100 ohms? If yes, repair the short to ground in the (K31) fuel pump relay control circuit. If no, go to next step.
5. Turn the ignition off. Remove the fuel pump relay from the IPM. Ignition on, engine not running. Using a 12-volt test light connected to ground, probe the (Y135) fused ignition switch output circuit in the fuel pump relay connector. Does the test light illuminate brightly? If yes, go to next step. If no, repair the open in the (Y135) fused ignition switch output circuit. inspect the related fuse and repair as necessary.
6. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P1294: TARGET IDLE NOT REACHED

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Engine speed is monitored with engine idling, transmission in Drive, (if automatic) and no Manifold Absolute Pressure (MAP) sensor or Throttle Position (TP) sensor DTCs present. DTC will set if Powertrain Control Module (PCM) senses engine idle speed is at least 200 RPM more or 100 RPM less than target idle speed for 40 seconds. This is a one trip fault.

1. Good Trip Equal To Zero
2. IAC Motor Passages
3. Vacuum Leaks
4. Air Induction System
5. Throttle Body And Throttle Linkage

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Remove the IAC motor. Inspect the IAC motor and passages way for any obstructions or damage to motor. Were any problems found? If yes, repair as necessary. If no, go to next step.
3. Reinstall the IAC motor. Start the engine. Inspect the vehicle for external vacuum leaks. Inspect the engine for internal leaks. Were any vacuum leaks found? If yes, repair the vacuum leak as necessary. If no, go to next step.
4. Inspect the air induction system for dirty air cleaner, foreign material trapped in the air intake tube, etc. Also check for leaks in the air intake tube connection, air cleaner housing, etc. Were any problems found? If yes, repair or replace as necessary. If no, go to next step.
5. Inspect throttle plate for carbon build-up or other restrictions. Inspect throttle linkage for binding. Ensure throttle plate is touching throttle stop at idle. If no problems are found, test is complete. If any problems are found, repair as necessary.

DTC P1297: NO CHANGE IN MAP SENSOR FROM START TO RUN

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored when engine speed is within 64 RPM of target idle speed and throttle plate is closed. DTC will set if Powertrain Control Module (PCM) senses too small of a difference between barometric pressure (with ignition on) and manifold vacuum (with engine running) for 8.8 seconds.

1. Good Trip Equal To Zero
2. MAP Sensor Voltage Below 3.19 Volts
3. (F855) 5-Volt Supply Circuit Shorted To Ground
4. (F855) 5-Volt Supply Circuit Open
5. MAP Sensor
6. (K1) MAP Sensor Signal Circuit Shorted To Ground
7. (K1) MAP Sensor Signal Circuit Shorted To (K4) Sensor Ground Circuit
8. Map Sensor Vacuum Port
9. PCM

Note. If DTC P0107 or P0108 is also set, diagnose those DTCs first. See DTC P0107: MAP SENSOR VOLTAGE TOO LOW or DTC P0108: MAP SENSOR VOLTAGE TOO HIGH .

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Remove the MAP sensor. Inspect the vacuum port, check for restrictions or any foreign materials. Were any restrictions found? If yes, repair as necessary. If no, go to next step.
3. Turn the ignition on. With the DRBIII® scan tool, read the MAP sensor voltage. Is the voltage below 3.19 volts. If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
4. Turn the ignition off. Disconnect the MAP sensor harness connector. Turn the ignition on. Measure the voltage of the (F855) 5-volt supply circuit in the MAP sensor harness connector. Is the voltage 4.5-5.2 volts? If yes, go to next step. If no, go to step 8 .
5. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connectors. With the DRBIII® scan tool, monitor the MAP sensor voltage. Turn the ignition on. Is the voltage above 1.2 volts? If yes, replace the MAP sensor. If no, go to next step.
6. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K1) MAP sensor signal circuit in the MAP sensor harness connector to ground. Is the resistance below 100 ohms? If yes, repair the (K1) MAP sensor signal circuit for a short to ground. If no, go to next step.
7. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance between the (K1) MAP sensor signal circuit and the (K900) sensor ground circuit in the MAP sensor harness connector. Is the resistance below 100 ohms? If yes, repair the (K1) MAP sensor signal circuit for a short to the sensor ground circuit. If no, go to next step.
8. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (F855) 5-volt supply circuit in the MAP sensor harness connector to ground. Is the resistance below 100 ohms? If yes, repair the (F855) 5-volt supply circuit for a short to ground. If no, go to next step.
9. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connector. Measure the resistance of the (F855) 5-volt supply circuit between the MAP sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (F855) 5-volt supply circuit for an open.
10. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P1299: VACUUM LEAK FOUND (IAC FULLY SEATED)

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Manifold Absolute Pressure (MAP) sensor and Throttle Position (TP) sensor signals are monitored with engine running. DTC will set if powertrain control module senses MAP sensor signal does not correlate to TP sensor signal.

1. Vacuum Leak
2. Throttle Position Sensor Sweep
3. MAP Sensor Operation
4. Intermittent Condition
5. TP Sensor Fully Seated

1. Inspect intake manifold and power brake booster for vacuum leaks. Check Positive Crankcase Ventilation (PCV) for proper operation and vacuum leaks. Repair as necessary. If no vacuum leaks are found and PCV system functions properly, go to next step.
2. The throttle must be fully seated and rest on the throttle stop. Turn the ignition on. With the DRBIII® scan tool, read the TP sensor voltage. Is the voltage below 1.5 volts? If yes, go to next step. If no, replace the TP sensor.
3. Turn the ignition on. With the DRBIII® scan tool, monitor the TP sensor voltage. Slowly open the throttle from the idle position to the wide open throttle position. Does voltage start at approximately 0.8 volt and go above 3.5 volts with a smooth voltage change? If yes, go to next step. If no, replace the TP sensor.
4. Turn the ignition off. Connect a vacuum gauge to manifold vacuum. Start the engine and allow it to reach operating temperature. If the engine will not idle, maintain a constant RPM above idle. With the DRBIII® scan tool, read the MAP sensor vacuum value. Is the DRBIII® scan tool reading within 1 in. Hg of the vacuum gauge? If yes, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM. If no, replace the MAP sensor.

DTC P1388: AUTOMATIC SHUTDOWN RELAY CONTROL CIRCUIT

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored with ignition on and battery voltage greater than 10.4 volts. DTC will set if Powertrain Control Module (PCM) senses a short or open in Automatic Shutdown (ASD) relay control circuit.

1. ASD Relay Operation
2. Fused B+ Output Circuit
3. ASD Relay
4. IPM Fuse & Relay Center
5. (K51) ASD Relay Control Circuit Open
6. (K51) ASD Relay Control Circuit Shorted To Ground
7. PCM

1. Turn the ignition on. With the DRBIII® scan tool, actuate the ASD relay. Is the ASD relay operating? If yes, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM. If no, go to next step.
2. Turn the ignition off. Remove the ASD relay from the IPM. Turn the ignition on. Using a 12-volt test light connected to ground, probe the (A14) fused B+ circuit in the IPM. Does the test light illuminate? If yes, go to next step. If no, replace the IPM fuse and relay.
3. Turn the ignition off. Remove the ASD relay from the IPM. Turn the ignition on. Using a 12-volt test light connected to 12-volts, probe the ASD relay control circuit in the IPM. With the DRBIII® scan tool, actuate the ASD relay. Does the test light flash on and off? If yes, replace the ASD relay. If no, go to next step.
4. Turn the ignition off. Disconnect the Integrated Power Module C3 harness connector. Turn the ignition on. Using a 12-volt test light connected to 12-volts, probe the ASD relay control circuit in the IPM harness connector. With the DRBIII® scan tool, actuate the ASD relay. Does the test light flash on and off? If yes, replace the IPM fused and relay center. If no, go to next step.
5. Turn the ignition off. Disconnect the Integrated Power Module C3 harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K51) ASD relay control circuit between the Integrated Power Module C3 harness connector and the PCM harness connector. Is the resistance below 5.0 ohms. If yes, go to next step. If no, repair the open in the (K51) ASD relay control circuit.
6. Turn the ignition off. Disconnect the Integrated Power Module C3 harness connector. Disconnect the PCM harness connector. Measure the resistance of the (K51) ASD relay control circuit in the Integrated Power Module C3 harness connector to ground. Is the resistance below 5.0 ohms. If yes, repair the short to ground in the (K51) ASD Relay Control circuit. If no, go to next step.
7. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P1389: NO ASD RELAY OUTPUT VOLTAGE AT PCM

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

ASD is monitored with ignition on and battery voltage greater than 10.4 volts. DTC will set if no voltage sensed at the Powertrain Control Module (PCM) when the ASD relay is energized.

1. Intermittent Condition
2. ASD Relay
3. Fused B+ Circuit
4. (K342) ASD Relay Output Circuit Open (No Start)
5. IPM Fuse & Relay Center
6. ASD Relay Output Circuit Open
7. PCM Start
8. PCM

Note. Inspect the ASD relay fuse located in the IPM. If the ASD relay fuse is open, repair the cause of the open first before continuing. Inspect the ASD relay output circuit for a short to ground for the cause of the open fuse.

Note. If DTC P1388 is set with this code, then diagnose DTC P1388: AUTOMATIC SHUTDOWN RELAY CONTROL CIRCUIT first if set along with this DTC.

1. With the DRBIII® scan tool, erase the DTC. Attempt to start the engine. If the engine will not start, crank the engine for at least 15 seconds. It may be necessary to repeat several times. Does the DTC reset. If yes, go to next step. If no, go to step 9 .
2. Attempt to start the engine. Does the engine start. If yes, go to next step. If no, go to step 5 .
3. Turn the ignition off. Disconnect the PCM harness connector. Disconnect the IPM C4 harness connector Measure the resistance of the (K342) ASD output circuit between the IPM harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (K342) ASD relay output circuit for an open.
4. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining. Replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .
5. Turn the ignition off. Install a substitute relay in place of the ASD relay. With the DRBIII® scan tool, erase DTCs. Attempt to start the engine. With the DRBIII® scan tool, read DTCs. Does the DTC reset? If yes, go to next step. If no, replace the ASD relay.
6. Turn the ignition off. Remove the ASD relay from the IPM. Using a 12-volt test light connected to ground, probe the fused B+ circuit in the IPM. Does the test light illuminate? If yes, go to next step. If no, replace the IPM fuse and relay center.
7. Turn the ignition off. Remove the ASD relay from the IPM. Disconnect the PCM harness connector. Disconnect the IPM C4 harness connector. Measure the resistance of the (K342) ASD relay output circuit between the IPM harness connector and the PCM harness connector. Is the resistance below 5.0 ohms. If yes, go to next step. If no, repair the (K342) ASD relay output circuit for an open.
8. Ensure the IPM C4 harness connector is connected to the IPM. Turn the ignition off. Disconnect the PCM harness connector. Measure the resistance of the ASD relay output circuit between the IPM and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) . If no, replace the IPM fuse and relay center.
9. Inspect the ASD relay fuse located in the IPM. If the ASD relay fuse is open, repair the cause of the open first before continuing. Inspect the ASD relay output circuit for a short to ground for the cause of the open fuse. With the DRBIII® scan tool erase the DTC. Attempt to start the engine. If the engine will not start, crank the engine for at least 15 seconds. It may be necessary to repeat several times. Does the DTC reset. If yes, go to next step. If no, repair as necessary.
10. With the engine running at normal operating temperature, monitor the DRBIII® scan tool parameters related to the DTC while wiggling the wiring harness. Check for the engine stumble, stall or quite running. Refer to any Technical Service Bulletins (TSB) that may apply. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Were any of the above conditions present? If yes, repair as necessary. If no, go to next step.
11. Attempt to start the engine. Does the engine start. If yes, go to next step. If no, go to step 14 .
12. Turn the ignition off. Disconnect the PCM harness connector. Disconnect the IPM C4 harness connector Measure the resistance of the ASD output circuit between the IPM harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the ASD relay output circuit for an open.
13. If there are no possible causes remaining. Replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .
14. Turn the ignition off. Install a substitute relay in place of the ASD relay. With the DRBIII® scan tool, erase DTCs. Attempt to start the engine. With the DRBIII® scan tool, read DTCs. Does the DTC reset? If yes, go to next step. If no, replace the ASD relay.
15. Turn the ignition off. Remove the ASD relay from the IPM. Using a 12-volt test light connected to ground, probe the fused B+ circuit in the IPM. Does the test light illuminate? If yes, go to next step. If no, replace the IPM fuse and relay center.
16. Turn the ignition off. Remove the ASD relay from the IPM. Disconnect the PCM harness connector. Disconnect the IPM C4 harness connector. Measure the resistance of the ASD relay output circuit between the IPM harness connector and the PCM harness connector. Is the resistance below 5.0 ohms. If yes, go to next step. If no, repair the ASD relay output circuit for an open.
17. Ensure the IPM C4 harness connector is connected to the IPM. Turn the ignition off. Disconnect the PCM harness connector. Measure the resistance of the ASD relay output circuit between the IPM and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) . If no, replace the IPM fuse and relay center.

DTC P1391: INTERMITTENT LOSS OF CMP OR CKP

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Camshaft Position (CMP) sensor and Crankshaft Position (CKP) sensor signals are monitored with engine running or cranking. DTC will set if failure counter reaches 20 failures for 2 consecutive trips.

1. Wiring Harness Inspection
2. Tone Wheel/Pulse Ring Inspection
3. Checking Intermittent Crankshaft Position Sensor Signal With Lab
4. Checking Intermittent Camshaft Position Sensor Signal With Lab
5. Checking Intermittent Crankshaft Position Sensor Wiring With Lab
6. Checking Intermittent Camshaft Position Sensor Wiring With Lab
7. Intermittent Condition
8. Camshaft Position Sensor
9. Crankshaft Position Sensor

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, go to step 10 .
2. Turn the ignition off. With the DRBIII® scan tool lab scope probe and the Miller Special Tool (6801), backprobe the (K44) CMP sensor signal circuit in the CMP harness connector. Start the engine. Observe the lab scope screen. Are there any irregular or missing signals? If yes, go to next step. If no, go to step 6 .
3. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Ensure the CKP sensor and the CMP sensor are properly installed and the mounting bolt(s) are tight. Refer to any Technical Service Bulletins (TSB) that may apply. Were any of the above conditions present? If yes, repair as necessary. If no, go to next step.
4. Turn the ignition off. Remove the CMP sensor. Inspect the tone wheel/pulse ring or camshaft magnet target for damage, foreign material, or excessive movement. Were any problems found? If yes, repair or replace the tone wheel/pulse ring as necessary. If no, go to next step.
5. There are no possible causes remaining, replace CMP sensor.
6. Turn the ignition off. With the DRBIII® scan tool lab scope probe and the Miller Special Tool (6801), backprobe the (K24) CKP sensor signal circuit in the CKP sensor harness connector. Start the engine. Observe the lab scope screen. Are there any irregular or missing signals? If yes, go to next step. If no, go to step 10 .
7. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Ensure the CKP sensor and the CMP sensor are properly installed and the mounting bolt(s) are tight. Refer to any Technical Service Bulletins (TSB) that may apply. Were any of the above conditions present? If yes, repair as necessary. If no, go to next step.
8. Turn ignition off. Remove CKP sensor. Inspect tone wheel/flexplate for damage, foreign material or excessive movement. Repair or replace tone wheel/flexplate as necessary. If tone wheel/flexplate is okay, go to next step.
9. If no other possible causes are remaining, replace CKP sensor.
10. Turn the ignition off. With the DRBIII® scan tool lab scope probe and the Miller Special Tool (6801), backprobe the (K24) CKP sensor signal circuit in the Powertrain Control Module (PCM) harness connector. Turn the ignition on, with the engine off. Observe the lab scope screen. Look for any pulses generated by the CKP sensor. Did the CKP sensor generate any pulses? If yes, replace the CKP sensor. If no, go to next step.
11. Turn the ignition off. With the DRBIII® scan tool lab scope probe and the Miller Special Tool (6801), backprobe the (K44) CMP sensor signal circuit in the PCM harness connector. Turn the ignition on, with the engine off. Observe the lab scope screen. Look for any pulses generated by the CMP sensor. Did the CMP sensor generate any pulses? If yes, replace the CMP sensor. If no, go to next step.
12. Turn the ignition off. With the DRBIII® scan tool lab scope probe and the Miller Special Tool (6801), backprobe the CKP sensor signal circuit in the PCM harness connector. Start the engine. Observe the lab scope screen while wiggling the wiring harness and connectors. Were there any irregularities in the lab scope pattern? If yes, check the harness connectors carefully. If connectors are okay, replace the CKP sensor. If no, go to next step.
13. Turn the ignition off. With the DRBIII® scan tool lab scope probe and the Miller Special Tool (6801), backprobe the CMP sensor signal circuit in the PCM harness connector. Start the engine. Observe the lab scope screen while wiggling the wiring harness and connectors. Were there any irregularities in the lab scope pattern? If yes, check the harness connectors carefully. If okay, replace the CMP sensor. If no, go to next step.
14. With the engine running at normal operating temperature, monitor the DRBIII® scan tool parameters related to the DTC while wiggling the wiring harness. Look for parameter values to change and/or a DTC to set. Review the DRBIII® scan tool freeze frame information. If possible, try to duplicate the conditions under which the DTC was set. Refer to any Technical Service Bulletins (TSB) that may apply. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Were any of the above conditions present? If yes, repair as necessary. If no, test complete.

DTC P1398: MISFIRE ADAPTIVE NUMERATOR AT LIMIT

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Misfire adaptive numerator is monitored under closed throttle deceleration, with A/C off, engine coolant temperature greater than 75°F (23.9°C) and greater than 50 seconds after engine start. DTC will set if one of the Crankshaft Position (CKP) sensor target windows has greater than 2.86 percent variance from CKP sensor reference window.

1. Adaptive Numerator Will Not Relearn
2. Tone Wheel/Pulse Ring
3. Wiring Harness
4. Crankshaft Position Sensor

1. Turn the ignition on. With the DRBIII® scan tool in the miscellaneous menu, choose Clear Powertrain Control Module (PCM) battery disconnect to reset the PCM. With the DRBIII® scan tool, choose the Misfire Pretest. Road test the vehicle and relearn the adaptive numerator. The adaptive numerator is learned when the Adaptive Numerator Done Learning line on the Misfire screen changes to Yes. Did the adaptive numerator relearn? If yes, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM. If no, go to next step.
2. Visually inspect the CKP sensor wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the CKP wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Ensure the CKP sensor is properly installed and the mounting bolt(s) are tight. Refer to any Technical Service Bulletins (TSB) that may apply. Were any of the above conditions present? If yes, repair as necessary. If no, go to next step.
3. Turn the ignition off. Remove the CKP sensor. Inspect the tone wheel/flex plate slots for damage, foreign material, or excessive movement. Were any problems found? If yes, repair or replace the tone wheel/flex plate as necessary. If no, go to next step.
4. There are no possible causes are remaining, replace CKP sensor.

DTC P1478: BATTERY TEMP SENSOR VOLTS OUT OF LIMIT

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Battery temp is monitored with ignition on. DTC will set if the battery temperature sensor, internal to the PCM, goes above 4.9 volts or below 0.1 volt for more than 3.2 seconds.

Possible Cause

PCM

The PCM has detected a fault with the battery temperature sensor which is internal to the Powertrain Control Module. If there are no possible causes remaining, replace and program the PCM. See PROGRAMMING .

DTC P1486: EVAP LEAK MONITOR PINCHED HOSE FOUND

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-6 under VERIFICATION TESTS to ensure system is functioning properly.

EVAP system is monitored immediately after cold start with ambient temperature of 40-90°F (4.4-32°C) and coolant temperature within 10°F (6°C) of ambient temperature. DTC will set if the Powertrain Control Module (PCM) detects a blocked EVAP hose between the Leak Detection Pump (LDP) and the fuel tank.

1. Intermittent LDP Monitor Failure
2. Obstruction In EVAP System Between EVAP Canister And Fuel Tank
3. EVAP Canister Obstructed
4. LDP Pressure Hose Obstructed
5. Obstruction In Hose/Tube Between EVAP Canister And Purge Solenoid
6. Leak Detection Pump

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip displayed and equal to zero? If yes, go to next step. If no, go to step 6 .
2. To continue testing you will need Miller Evaporative Emission Leak Detector (8404). The fuel tank should have between 20-80 percent of fuel tank capacity to properly test the EVAP system. Disconnect the vacuum supply hose at the leak detection pump. Connect and apply a continuous vacuum supply (i.e. 20 in. Hg) to the leak detection pump. A vacuum pump such as an A/C recovery unit works well. Using the DRBIII® scan tool, select Engine/System Tests and actuate the Leak Detect Pump Test (Option 3/Hold PSI). This energizes the LDP solenoid and allows the constant vacuum source to apply vacuum to the LDP pump diaphragm. This lifts the diaphragm up and seals the atmospheric canister vent valve at the bottom of the leak detection pump. Connect the Red power lead of Miller Evaporative Emission Leak Detector to the battery positive terminal and the Black ground lead to battery negative terminal. Connect shop air to the Miller Evaporative Emission Leak Detector. Set the smoke/air control switch to AIR. Insert the tester's AIR supply tip (clear hose) into the appropriate calibration orifice on the tester's control panel (based on DTC leak size). Press the remote smoke/air start button. Position the Red flag on the air flow meter so it is aligned with the indicator ball. When the calibration is complete, release the remote button. The Evaporative Emission Leak Detector has now calibrated the flow meter in liters per minute to the size leak indicated by the DTC set in the PCM. Install the Service Port Adapter (8404-14) on the vehicle's service port. Connect the Air supply hose from the Miller Evaporative Emission Leak Detector to the service port. Press the remote button to activate AIR flow. Larger volume fuel tanks, and/or those with less fuel, may require 4 to 5 minutes to fill. The flow meter gauge on the Miller Evaporative Emission Leak Detector will read zero LPM when the EVAP system is completely pressurized. Disconnect the hose at the EVAP canister that goes to the Fuel Tank. Did the pressure drop when the hose was disconnected. If yes, go to next step. If no, repair the obstruction in the EVAP system between the EVAP canister and the Fuel Tank.
3. Reconnect all previously disconnected hose(s). Repressurize the EVAP system. Using evaporative emission leak detector, hold down the remote smoke/air start button and monitor the gauge. The flow meter gauge on the evaporative emission leak detector reads 0 LPM the EVAP system completely pressurized. Disconnect the LDP Pressure hose at the EVAP canister. The LDP Pressure hose is the hose that connects the EVAP canister to the leak detection pump. Did the pressure drop when the hose was disconnected? If yes, go to next step. If no, replace the EVAP canister.
4. Reconnect all previously disconnected hose(s). Repressurize the EVAP system. On evaporative emission leak detector, set the Pressure/Hold switch to open and set the vent switch to closed. Turn the pump timer ON and watch the gauge. The flow meter gauge on the evaporative emission leak detector reads 0 LPM the EVAP system completely pressurized. Disconnect the EVAP hoses at the purge solenoid. Did the pressure drop when the hose was disconnected? If yes, go to next step. If no, repair or replace hose/tube as necessary.
5. Disconnect and remove the LDP pressure hose. The LDP pressure hose is the hose that connects the EVAP canister to the Leak Detection Pump. Inspect the LDP pressure hose for any obstructions or physical damage. Is the LDP pressure hose free from defects? If yes, replace the Leak Detection Pump. If no, repair/replace hose as necessary.
6. At this time, the conditions required to set the DTC are not present. Use the Freeze Frame Data to help you duplicate the conditions that set the DTC. Pay particular attention to the DTC set conditions such as VSS, MAP, ECT, and Load. A thorough visual inspection of the EVAP system hoses, tubes and connections may save time in your diagnosis. Look for any physical damage or signs of wetness at connections. The strong smell of fuel vapors may aid diagnosis also. Refer to any Technical Service Bulletins (TSB) that may apply. With the DRBIII® scan tool in System Tests, perform the LDP Monitor Test. This will force the PCM to run the LDP Monitor. If the monitor fails, further diagnosis is required to find faulty component. If the monitor passes, the condition is not present at this time. Were any problems found? If yes, repair as necessary. If no, test is complete.

DTC P1491: RAD FAN CONTROL RELAY CIRCUIT

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored: With the ignition on. Battery voltage greater than 10.4 volts. Set Condition: An open or shorted circuit is detected in the radiator fan relay control circuit.

1. Radiator Fan Relay Operation
2. Ground Circuit
3. Radiator Fan Relay
4. (N173) Radiator Fan Relay Control Circuit Open (IPM)
5. (K173) Radiator Fan Relay Control Circuit Open (PCM)
6. (N173) Radiator Fan Relay Control Circuit Shorted To Ground (IPM)
7. (K173) Radiator Fan Relay Control Circuit Short To Ground (PCM)
8. Integrated Power Module (Shorted)
9. Integrated Power Module (Open)
10. PCM

1. Turn the ignition on. With the DRBIII® scan tool, actuate the radiator fan relay. Do the fans operate? If yes, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM. If no, go to next step.
2. Turn the ignition off. Disconnect the radiator fan relay harness connector. Using a 12-volt test light connected to 12-volts, probe the ground circuit in the radiator fan relay harness connector. Does the test light illuminate? If yes, go to next step. If no, repair the ground circuit for an open.
3. Turn the ignition off. Remove the radiator fan relay from the radiator fan relay connector. Connect a jumper wire between cavities No. 3 and 4. Turn the ignition on. With the DRBIII® scan tool, actuate the radiator fan relay. Do the radiator fans operate? If yes, replace the radiator fan relay. If no, go to next step.
4. Turn the ignition off. Disconnect the radiator fan relay harness connector. Disconnect the PCM harness connector. Measure the resistance of the radiator fan relay control circuit between the radiator fan relay harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, go to step 8 .
5. Turn the ignition off. Disconnect the radiator fan relay harness connector. Disconnect the IPM C2 harness connector. Measure the resistance of the (N173) radiator fan relay control circuit in the radiator fan relay harness connector to ground. Is the resistance below 5.0 ohms? If yes, repair the short to ground in the (N173) radiator fan relay control circuit, between the radiator fan relay harness connector and the IPM harness connector. If no, go to next step.
6. Turn the ignition off. Disconnect the PCM harness connector. Disconnect the IPM C3 harness connector. Measure the resistance of the (K173) radiator fan relay control circuit in the PCM harness connector to ground. Is the resistance below 5.0 ohms? If yes, repair the short to ground in the (K173) radiator fan relay control circuit, between PCM harness connector and the IPM harness connector. If no, go to next step.
7. Turn the ignition off. Disconnect IPM C2 harness connector and IPM C3 harness connector. Measure the resistance between ground and the IPM C2 connector terminal of the IPM. Is the resistance below 5.0 ohms? If yes, replace the IPM fuse and relay center. If no, go to step 11 .
8. Turn the ignition off. Disconnect the radiator fan relay harness connector. Disconnect the IPM C2 harness connector. Measure the resistance of the (N173) radiator fan relay control circuit between the IPM harness connector and the radiator fan relay harness connector. Is the resistance below 5.0 ohms. If yes, go to next step. If no, repair the open in the (N173) radiator fan relay control circuit, between the radiator fan relay harness connector and the IPM harness connector.
9. Turn the ignition off. Disconnect the PCM harness connector. Disconnect the IPM C3 harness connector. Measure the resistance of the (K173) radiator fan relay control circuit between the IPM harness connector and the PCM harness connector. Is the resistance below 5.0 ohms. If yes, go to next step. If no, repair the open in the (K173) radiator fan relay control circuit, between PCM harness connector and the IPM harness connector.
10. Turn the ignition off. Disconnect IPM C2 harness connector and IPM C3 harness connector. Measure the resistance of the IPM circuit between the IPM C2 connector terminal 1 and the IPM C3 connector terminal 18. Is the resistance above 5.0 ohms? If yes, replace the IPM fuse and relay center. If no, go to next step.
11. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P1494: LEAK DETECTION PUMP SW OR MECHANICAL FAULT

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-6 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored immediately after a cold start, with ambient/battery temperature 40-90°F (4.4-32.2°C) and engine coolant temperature within 10°F of ambient temperature. DTC will set if Powertrain Control Module (PCM) does not sense a change in switch state when LDP solenoid is energized.

1. Good Trip Equal To Zero
2. Leak Detection Pump Vacuum Supply
3. Leak Detection Pump
4. (K107) LDP Switch Sense Circuit Shorted To Ground
5. (K107) LDP Switch Sense Circuit Open
6. PCM

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the vacuum supply hose at the leak detection pump. Connect a vacuum gauge to the disconnected vacuum supply hose at the detection pump. Start the engine and read the vacuum gauge. Does the vacuum gauge read at least 13 in. Hg? If yes, go to next step. If no, repair leak or obstruction in vacuum hose as necessary.
3. Turn the ignition off. Disconnect the leak detection pump harness connector. Turn the ignition on. With the DRBIII® scan tool in Inputs/Outputs, read the Leak Detect Pump Sw state. While observing the Leak Detect Pump Sw state, connect a jumper wire between a 12-volt source and the LDP switch sense circuit. Did the Leak Detect Pump Sw state change when the jumper was connected? If yes, replace the leak detection pump. If no, go to next step.
4. Turn the ignition off. Disconnect the leak detection pump harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K107) LDP switch sense circuit in the LDP harness connector to ground. Is the resistance below 5.0 ohms? If yes, repair the (K107) LDP switch sense circuit for a short to ground. If no, go to next step.
5. Turn the ignition off. Disconnect the leak detection pump harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K107) LDP switch sense circuit between the LDP harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (K107) LDP switch sense circuit for an open.
6. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P1495: LEAK DETECTION PUMP SOLENOID CIRCUIT

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-6 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored immediately after a cold start, with ambient/battery temperature 40-90°F (4.4-32.2°C) and engine coolant temperature within 10°F of ambient temperature. DTC will set if the state of solenoid circuit does not match Powertrain Control Module (PCM) desired state.

1. Good Trip Equal To Zero
2. Leak Detection Pump
3. (F202) Fused Ignition Switch Output
4. (K106) LDP Solenoid Control Circuit Shorted To Ground
5. (K106) LDP Solenoid Control Circuit Open
6. PCM

1. Turn the ignition on. With the DRBIII® scan tool, read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, refer to the «INTERMITTENT CONDITION»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__intermittent-condition) under SELF-DIAGNOSTICS SYSTEM.
2. Turn the ignition off. Disconnect the Leak Detection Pump harness connector. Using a 12-volt test light, connect one end to the fused ignition switch output circuit and the other end to the LDP solenoid control circuit at the leak detection pump harness connector. Turn the ignition on. With the DRBIII® scan tool, actuate the leak detection pump. Does the test light flash on and off? If yes, replace the leak detection pump. If no, go to next step.
3. Turn the ignition off. Disconnect the leak detection pump harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, probe the (F202) ignition switch output circuit in the leak detection pump harness connector. Does the test light illuminate brightly? If yes, go to next step. If no, repair the (F202) fused ignition switch output circuit.
4. Turn ignition off. Disconnect the leak detection pump harness connector. Disconnect PCM harness connector. Measure the resistance of the (K106) LDP solenoid control circuit in the leak detection pump harness connector to ground. Is the resistance below 5.0 ohms? If yes, repair the (K106) LDP solenoid control circuit for a short to ground. If no, go to next step.
5. Turn ignition off. Disconnect the leak detection pump harness connector. Disconnect PCM harness connector. Measure the resistance of LDP solenoid control circuit between (K106) LDP solenoid harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (K106) LDP solenoid control circuit for an open.
6. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P1496: 5-VOLT SUPPLY OUTPUT TOO LOW

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored with ignition on. DTC will set if Powertrain Control Module (PCM) senses 5-volt supply circuit voltage is less than 3.5 volts for 4 seconds.

1. Intermittent Condition
2. Throttle Position Sensor
3. Manifold Absolute Pressure Sensor
4. A/C Pressure Sensor
5. (F855) 5-Volt Supply Circuit Shorted To Ground
6. PCM

1. Turn the ignition on. With the DRBIII® scan tool, read the DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, go to step 9 .
2. Turn the ignition off. Disconnect the Throttle Position (TP) sensor harness connector. Turn the ignition on. Measure the (F855) 5-volt supply circuit at the TP sensor harness connector. Is the voltage below 4.5 volts? If yes, go to next step. If no, go to step 8 .
3. Turn the ignition off. Disconnect the TP sensor harness connector. Turn the ignition on. Connect a voltmeter to the (F855) 5-volt supply circuit at the TP sensor harness connector. Monitor the voltage display. Turn the ignition off. Disconnect the Manifold Absolute Pressure (MAP) sensor harness connector. Turn the ignition on. Did the 5-volt supply go from below 4.5 volts to above 4.5 volts when the MAP sensor was disconnected? If yes, replace the MAP sensor. If no, go to next step. NOTE: A/C pressure sensor may also be referred to as A/C pressure transducer.
4. Turn the ignition off. Disconnect the TP sensor harness connector. Turn the ignition on. Connect a voltmeter to the (F855) 5-volt supply circuit at the TP sensor harness connector. Monitor the voltage display. Turn the ignition off. Disconnect the A/C pressure sensor harness connector, located on top of A/C compressor. Turn the ignition on. Did the (F855) 5-volt supply go from below 4.5 volts to above 4.5 volts when the A/C pressure sensor was disconnected? If yes, replace the A/C pressure sensor. If no, go to next step.
5. Turn the ignition off. Disconnect the TP sensor harness connector. Turn the ignition on. Connect a voltmeter to the (F855) 5-volt supply circuit at the TP sensor harness connector. Monitor the voltage display. Turn the ignition off. Disconnect the EGR solenoid harness connector. Turn the ignition on. Did the (F855) 5-volt supply go from below 4.5 volts to above 4.5 volts when the EGR solenoid was disconnected? If yes, replace the EGR solenoid. If no, go to next step.
6. Turn the ignition off. Disconnect the PCM, TP sensor, MAP sensor, A/C pressure sensor and EGR solenoid harness connectors are disconnected. Measure the resistance of the (F855) 5-volt supply circuit in the TP sensor harness to ground. Is the resistance below 5.0 ohms? If yes, repair the (F855) 5-volt supply circuit for a short to ground. If no, go to next step.
7. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .
8. Turn the ignition off. Reconnect the TP sensor harness connector. Disconnect the MAP sensor harness connector. Turn the ignition on. Measure the (F855) 5-volt supply circuit in the MAP sensor harness connector. Is the voltage below 4.5 volts? If yes, replace the TP sensor. If no, go to next step.
9. The conditions that set the DTC are not present at this time. The following list may help in identifying the intermittent condition. With the engine running at normal operating temperature, monitor the DRBIII® scan tool parameters related to the DTC while wiggling the wiring harness. Look for parameter values to change and/or a DTC to set. Review the DRBIII® scan tool freeze frame information. If possible, try to duplicate the conditions under which the DTC was set. Refer to any Technical Service Bulletins (TSB) that may apply. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Were any of the above conditions present? If yes, repair as necessary. If no, the test is complete.

Charging system voltage is monitored with the engine running. With the engine speed greater than 380 RPM. DTC will set if the battery voltage is 1 volt greater than desired system voltage.

1. Target Voltage Differs From Battery Voltage
2. Intermittent Condition
3. (K20) Generator Field Driver Circuit Shorted To Ground
4. Generator Field
5. PCM

Note. Battery must be fully charged.

Note. Generator belt tension and condition must be checked before continuing.

1. Turn the ignition on. With DRBIII® scan tool, actuate the generator field driver. With a 12-volt test light connected to ground, backprobe the (K20) Generator Field Driver circuit in the back of Generator harness connector. Does the test light illuminate brightly and flash? If yes, go to next step. If no, go to step 5 .
2. With DRBIII® scan tool, stop all actuation. Turn the ignition on. With DRBIII® scan tool, read the target charging voltage. Is the target charging voltage above 13 volts? If yes, go to next step. If no, go to step 4 .
3. Start the engine. With the DRBIII® scan tool, manually set the engine speed to 1600 RPM. With DRBIII® scan tool, read both the battery voltage and the target charging voltage. Compare the target charging voltage to the battery voltage reading. Monitor voltage for 5 minutes, if necessary. Look for a 1.0 volt difference or more. Was there more than a 1.0 volt difference? If yes, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) . If no, go to next step.
4. The conditions that set the DTC are not present at this time. The following list may help in identifying the intermittent condition. With the engine running at normal operating temperature, monitor the DRBIII® scan tool parameters related to the DTC while wiggling the wiring harness. Look for parameter values to change and/or a DTC to set. Review the DRBIII® scan tool freeze frame information. If possible, try to duplicate the conditions under which the DTC was set. Refer to any Technical Service Bulletins (TSB) that may apply. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Were any of the above conditions present? If yes, repair as necessary If no, the test is complete.
5. Turn the ignition off. Disconnect the PCM harness connector. Disconnect the generator field harness connector. Measure the resistance of the (K20) generator field driver circuit from the PCM harness connector to ground. Is the resistance below 5.0 ohms? If yes, repair the short to ground in the (K20) generator field driver circuit. If no, go to next step.
6. Turn the ignition off. Disconnect the generator field harness connector. Measure resistance of the generator field driver terminal pin of the generator to ground. Is the resistance below 5.0 ohms? If yes, repair or replace the shorted generator as necessary. If no, go to next step.
7. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .

DTC P1595: SPEED CONTROL SOLENOID CIRCUITS OR DTC P1683: SPD CTRL PWR RELAY OR S/C 12V DRIVER CKT

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-4 under VERIFICATION TESTS to ensure system is functioning properly.

Speed Control (S/C) solenoid circuits are monitored when engine is running, S/C switch is on and battery voltage is more than 10.4 volts. DTC P1595 and P1683 will set if vacuum and vent solenoids do not respond when actuated by PCM.

1. Ground Circuit Open
2. S/C Brake Switch Output Circuit Open
3. S/C Power Supply Circuit Open Or Shorted
4. S/C Servo Defective
5. S/C Vacuum Solenoid Control Circuit Open Or Shorted
6. S/C Vent Solenoid Control Circuit Open Or Shorted
7. Brake Switch Defective Or Out Of Adjustment
8. Defective PCM

1. Turn the ignition on. Using a scan tool, read DTCs. Is the Good Trip displayed and equal to zero. If yes, go to next step. If no, go to step 17 .
2. Turn the ignition on. With the scan tool, actuate the S/C vacuum solenoid and note operation. Next, actuate the S/C vent solenoid and note operation. Choose the conclusion that best matches the solenoids operation. If the vacuum solenoid is not operating, go to step 3 . If the vent solenoid is not operating, go to step 7 . If both S/C solenoids do not operate, go to step 11 . If both S/C solenoids operate, go to step 16 .
3. Turn the ignition off. Disconnect the speed control servo harness connector. Turn the ignition on. Using a scan tool, actuate the speed control vacuum solenoid. Using a 12-volt test light connected to 12 volts, probe the speed control vacuum solenoid control circuit. Does the test light illuminate brightly and flash? If yes, replace the speed control servo. Perform TEST VER-4A under VERIFICATION TESTS. If no, go to next step.
4. Turn the ignition off. Disconnect the speed control servo harness connector. Disconnect the PCM harness connector. Using an ohmmeter, measure resistance of the speed control vacuum solenoid control circuit between the PCM harness connector and the speed control servo harness connector. Is the resistance below 5 ohms? If yes, go to next step. If no, repair the open in the speed control vacuum solenoid control circuit. Perform TEST VER-4A under VERIFICATION TESTS.
5. Using an ohmmeter connected to ground, measure resistance of the speed control vacuum solenoid control circuit in the PCM harness connector. Is the resistance below 5 ohms? If no, go to next step. If yes, repair the short to ground in the speed control vacuum solenoid control circuit. Perform TEST VER-4A under VERIFICATION TESTS.
6. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) . Perform TEST VER-4A under VERIFICATION TESTS.
7. Turn ignition off. Disconnect the speed control servo harness connector. Turn the ignition on. Using a scan tool, actuate S/C vent solenoid. Using a 12-volt test light connected to 12 volts, probe the speed control vent solenoid control circuit in the speed control servo harness connector. Does the test light illuminate brightly and flash? If yes, replace the speed control servo. Perform TEST VER-4A under VERIFICATION TESTS. If no, go to next step.
8. Turn ignition off. Disconnect the speed control servo harness connector. Disconnect the PCM harness connector. Using an ohmmeter, measure resistance of the speed control vent solenoid control circuit between the PCM harness connector and the speed control servo harness connector. Is the resistance below 5 ohms? If yes, go to next step. If no, repair the open in the speed control vent solenoid control circuit. Perform TEST VER-4A under VERIFICATION TESTS.
9. Turn ignition off. Disconnect the speed control servo harness connector. Disconnect the PCM harness connector. Using an ohmmeter connected to ground, measure resistance of the speed control vent solenoid control circuit in the PCM harness connector. Is the resistance below 5 ohms? If no, go to next step. If yes, repair the short to ground in the speed control vent solenoid control circuit. Perform TEST VER-4A under VERIFICATION TESTS.
10. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM in accordance with the service information. Perform TEST VER-4A under VERIFICATION TESTS.
11. Turn the ignition off. Disconnect the speed control servo harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, probe the speed control brake switch output circuit in the S/C servo harness connector. Does the test light illuminate brightly? If yes, replace the speed control servo. Perform TEST VER-4A under VERIFICATION TESTS. If no, go to next step.
12. Turn ignition off. Disconnect the speed control servo harness connector. Disconnect the brake lamp switch harness connector. Using an ohmmeter, measure resistance of the speed control brake switch output circuit between the speed control servo harness connector and the brake lamp switch harness connector. Is the resistance below 5 ohms? If yes, go to next step. If no, repair the open in the speed control brake switch output. Perform TEST VER-4A under VERIFICATION TESTS.
13. Disconnect the brake lamp switch harness connector. Turn ignition on. Using a 12-volt test light connected to ground, probe the speed control power supply circuit in the brake lamp switch harness connector. Does the test light illuminate brightly? If no, go to next step. If yes, replace the brake lamp switch. Perform TEST VER-4A under VERIFICATION TESTS.
14. Turn ignition off. Disconnect the PCM harness connector. Disconnect the brake lamp switch harness connector. Using an ohmmeter, measure resistance of the speed control power supply circuit between the PCM harness connector and the brake lamp switch harness connector. Is the resistance below 5 ohms? If yes, go to next step. If no, repair the open in the speed control supply circuit. Perform TEST VER-4A under VERIFICATION TESTS.
15. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM in accordance with the service information. Perform TEST VER-4A under VERIFICATION TESTS.
16. Start the engine and allow it to reach operating temperature. This will allow the vacuum reservoir to build up vacuum. Turn the engine off, ignition on. Using a scan tool, actuate the S/C servo. Monitor the S/C servo to throttle operation. The throttle should move until all the vacuum has been released from the vacuum reservoir. Does the S/C servo open and close the throttle plate? If yes, go to next step. If no, replace the S/C servo. Perform TEST VER-4A under VERIFICATION TESTS.
17. Turn the ignition off. Disconnect the S/C servo harness connector. Using a 12-volt test light connected to 12 volts, probe the ground circuit in the S/C servo harness connector. Does the test light illuminate brightly? If yes, go to next step. If no, repair open in the ground circuit. Perform TEST VER-4A under VERIFICATION TESTS.
18. With the engine running at normal operating temperature, monitor the scan tool parameters related to the DTC while wiggling the wiring harness. Look for parameter values to change and/or a DTC to set. Review the scan tool freeze frame information. If possible, try to duplicate the conditions under which the DTC was set. Refer to any Technical Service Bulletins (TSB) that may apply. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Were any of the above conditions present? If yes, repair as necessary. Perform TEST VER-4A under VERIFICATION TESTS. If no, the test is complete.

DTC P1598: A/C PRESSURE SENSOR VOLTAGE TOO HIGH

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-2 under VERIFICATION TESTS to ensure system is functioning properly.

A/C pressure sensor may also be referred to as A/C pressure transducer. A/C pressure sensor voltage is monitored with engine is running and A/C clutch relay energized. DTC will set if A/C pressure sensor signal at Powertrain Control Module (PCM) goes above 4.92 volts.

1. Intermittent Condition
2. A/C Pressure Sensor Signal Circuit Shorted To 5-Volt Supply Circuit
3. A/C Pressure Sensor Signal Circuit Shorted To Battery Voltage
4. A/C Pressure Sensor Internal Failure
5. A/C Pressure Sensor Signal Circuit Open
6. Sensor Ground Circuit Open
7. PCM

1. Start the engine. With the DRBIII® scan tool, read the A/C pressure sensor voltage. Is the voltage above 4.9 volts? If yes, go to next step. If no, go to step 8 .
2. Turn the ignition off. Disconnect the A/C pressure sensor harness connector, located on top of A/C compressor. Disconnect the PCM harness connectors. Measure the resistance between the A/C pressure sensor signal circuit and the 5-volt supply circuit in the A/C pressure sensor harness connector. Is the resistance below 5.0 ohms? If yes, repair the A/C pressure sensor signal circuit for a short to the 5-volt supply circuit. If no, go to next step.
3. Turn the ignition off. Disconnect the A/C pressure sensor harness connector, located on top of A/C compressor. Reconnect PCM connectors. Turn the ignition on, engine off. Measure the voltage of the A/C pressure sensor signal circuit in the A/C pressure sensor harness connector. Is the voltage above 5.2 volts? If yes, repair the A/C pressure sensor signal circuit for a short to battery voltage. If no, go to next step.
4. Turn the ignition off. Disconnect the A/C pressure sensor harness connector, located on top of A/C compressor. Connect a jumper wire between the A/C pressure sensor signal circuit and the sensor ground circuit. With the DRBIII® scan tool, monitor the A/C pressure sensor voltage. Turn ignition on, engine not running. Is the voltage below 1.0 volt? If yes, replace the A/C pressure sensor. If no, go to next step.
5. Turn the ignition off. Disconnect the A/C pressure sensor harness connector, located on top of A/C compressor. Disconnect the PCM harness connectors. Measure the resistance of the A/C pressure sensor circuit from the A/C pressure sensor harness connector to the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the A/C pressure sensor signal circuit for an open.
6. Turn the ignition off. Disconnect the A/C pressure sensor harness connector, located on top of A/C compressor. Reconnect PCM connectors. Measure the resistance of the sensor ground circuit in the A/C pressure sensor harness connector to ground. Is the resistance below 30 ohms? If yes, go to next step. If no, repair the sensor ground circuit for an open.
7. There are no possible causes remaining, replace PCM. Program the new PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .
8. The conditions that set the DTC are not present at this time. The following may help in identifying the intermittent condition. With the engine running at normal operating temperature, monitor the DRBIII® scan tool parameters related to the DTC while wiggling the wiring harness. Look for parameter values to change and/or a DTC to set. Review the DRBIII® scan tool Freeze Frame information. If possible, try to duplicate the conditions under which the DTC was set. Refer to any Technical Service Bulletins (TSB) that may apply. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Were any of the above conditions present? If yes, repair as necessary. If no, test is complete.

DTC P1599: A/C PRESSURE SENSOR VOLTAGE TOO LOW

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-2 under VERIFICATION TESTS to ensure system is functioning properly.

A/C pressure sensor may also be referred to as A/C pressure transducer. A/C pressure sensor voltage is monitored with engine is running and A/C clutch relay energized. DTC will set if A/C pressure sensor signal at Powertrain Control Module (PCM) goes below 0.58 volt for 2.6 seconds.

1. Intermittent Condition
2. (F855) 5-Volt Supply Circuit Shorted To Ground
3. (F855) 5-Volt Supply Circuit Open
4. A/C Pressure Sensor Internal Failure
5. (C18) A/C Pressure Sensor Signal Circuit Shorted To Ground
6. (C18) A/C Pressure Sensor Signal Circuit Shorted To (K900) Sensor Ground Circuit
7. PCM (F855) 5-Volt Supply Circuit
8. PCM (C18) A/C Pressure Sensor Signal

1. Start the engine. With the DRBIII® scan tool, read the A/C pressure sensor voltage. Is the voltage below 0.6 volt? If yes, go to next step. If no, go to step 10 .
2. Turn the ignition off. Disconnect the A/C pressure sensor harness connector, located on top of A/C compressor. Turn ignition on, engine not running. Measure the voltage of the (F855) 5-volt supply circuit in the A/C pressure sensor harness connector. Is the voltage between 4.5 and 5.2 volts? If yes, go to next step. If no, go to step 7 .
3. Turn the ignition off. Disconnect the A/C pressure sensor harness connector. With the DRBIII® scan tool, monitor the A/C pressure sensor voltage. Is the voltage above 0.6 volt? If yes, replace the A/C pressure sensor. If no, go to next step.
4. Turn the ignition off. Disconnect the (C18) A/C pressure sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the A/C pressure sensor signal circuit in the A/C pressure sensor harness connector to ground. Is the resistance below 100 ohms? If yes, repair the (C18) A/C pressure sensor signal circuit for a short to ground. If no, go to next step.
5. Measure the resistance between the (C18) A/C pressure sensor signal circuit and the (K900) sensor ground circuit in the A/C pressure sensor harness connector. Is the resistance below 100 ohms? If yes, repair the (C18) A/C pressure sensor signal circuit for a short to the (K900) sensor ground circuit. If no, go to next step.
6. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .
7. Turn the ignition off. Disconnect the A/C pressure sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (F855) 5-volt supply circuit in the A/C pressure sensor harness connector to ground. Is the resistance below 100 ohms? If yes, repair the (F855) 5-volt supply circuit for a short to ground. If no, go to next step.
8. Turn the ignition off. Disconnect the A/C pressure sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (F855) 5-volt supply circuit between the A/C pressure sensor harness connector and the PCM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the (F855) 5-volt supply circuit for an open.
9. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .
10. The conditions that set the DTC are not present at this time. The following may help in identifying the intermittent condition. With the engine running at normal operating temperature, monitor the DRBIII® scan tool parameters related to the DTC while wiggling the wiring harness. Look for parameter values to change and/or a DTC to set. Review the DRBIII® scan tool Freeze Frame information. If possible, try to duplicate the conditions under which the DTC was set. Refer to any Technical Service Bulletins (TSB) that may apply. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Were any of the above conditions present? If yes, repair as necessary. If no, test is complete.

DTC P1685: WRONG OR INVALID KEY MSG RECEIVED FROM SKIM

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform SKIS VERIFICATION TEST under VERIFICATION TESTS to ensure system is functioning properly.

System is monitored with ignition on. DTC will set if the Powertrain Control Module (PCM) does not receive a valid key message from Sentry Key Immobilizer Module (SKIM).

1. Incorrect VIN In PCM
2. Invalid Skim Key Present
3. No Communication With SKIM
4. No VIN Programmed In The PCM
5. PCM
6. SKIM Trouble Codes Set

1. Turn the ignition on. With the DRBIII® scan tool, read the PCM DTCs. Is the Starts Since Set counter for DTC P1685 displayed and equal to 0? If yes, go to next step. If no, go to step 7 .
2. With the DRBIII® scan tool, attempt to communicate with the SKIM. Turn the ignition on. Can the DRBIII® scan tool communicate with the SKIM? If yes, go to next step. If no, diagnose communication fault. See BUS +/- SIGNAL OPEN FROM SKIM under COMMUNICATIONS under SYSTEM TESTS in the «BODY DIAGNOSTIC PROCEDURES»(/dodge/grand-caravan/iv-2000-2007/remont/collisionavoidance/#body-diagnostic-procedures) article in ACCESSORIES & EQUIPMENT.
3. Turn the ignition on. With the DRBIII® scan tool, check for SKIM DTCs. Are any DTCs present in the SKIM? If yes, repair all SKIM DTCs. See the «BODY DIAGNOSTIC PROCEDURES»(/dodge/grand-caravan/iv-2000-2007/remont/collisionavoidance/#body-diagnostic-procedures) article in ACCESSORIES & EQUIPMENT. If no, go to next step.
4. Turn the ignition on. With the DRBIII® scan tool, display the VIN that is programmed in the PCM. Has a VIN been programmed into the PCM? If yes, go to next step. If no, program the correct VIN into the PCM and retest.
5. Turn the ignition on. With the DRBIII® scan tool, display the VIN that is programmed in the PCM. Was the correct VIN programmed into the PCM? If yes, go to next step. If no, replace PCM. Program the new PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .
6. Turn the ignition off. Replace and program the Sentry Key Immobilizer Module. See REMOVAL & INSTALLATION in appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT. Turn the ignition on. With the DRBIII® scan tool, erase all SKIM and PCM DTCs. Attempt to start and idle the engine. With the DRBIII® scan tool, read the PCM DTCs. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. Does the DRBIII® scan tool display this code? If yes, replace PCM. Program the new PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) . If no, test is complete.
7. Turn the ignition on. Verify the correct VIN is programmed into the PCM and SKIM. Turn the ignition off. With the next customer key turn the ignition key on and crank the engine to start. With the DRBIII® scan tool, read the PCM DTCs. Is the Starts Since Set counter for DTC P1685 displayed and equal to 0? If yes, replace the Ignition Key. If no, the test is complete. If this DTC cannot be reset, it could have been an actual theft attempt.

DTC P1686: NO SKIM BUS MESSAGE RECEIVED

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform SKIS VERIFICATION TEST under VERIFICATION TESTS to ensure system is functioning properly.

System is monitored with ignition on. DTC will set if Powertrain Control Module (PCM) does not receive a bus message from Sentry Key Immobilizer Module (SKIM) when expected.

1. SKIM/PCM
2. Intermittent Condition
3. Loss Of SKIM Communication
4. PCI Bus Circuit Open From PCM To SKIM

1. Turn the ignition on. With the DRBIII® scan tool, read the PCM DTCs. Is the Starts Since Set counter on the DTC screen for P1686 equal to 0? If yes, go to next step. If no, go to step 5 .
2. Turn the ignition on. With the DRBIII® scan tool, attempt to communicate with the SKIM. Was the DRBIII® scan tool able to communicate with the SKIM? If yes, go to next step. If no, diagnose communication fault. See BUS +/- SIGNAL OPEN FROM SKIM under COMMUNICATIONS under SYSTEM TESTS in the «BODY DIAGNOSTIC PROCEDURES»(/dodge/grand-caravan/iv-2000-2007/remont/collisionavoidance/#body-diagnostic-procedures) article in ACCESSORIES & EQUIPMENT.
3. Turn the ignition off. Disconnect the PCM harness connector. Disconnect the SKIM harness connector. Measure the resistance of the PCI Bus circuit between the PCM harness connector and the SKIM harness connector. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the PCI Bus circuit between the PCM and the SKIM for an open.
4. Turn the ignition off. Replace the Sentry Key Immobilizer Module. See REMOVAL & INSTALLATION in appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT. Turn the ignition on. Display and erase all PCM and SKIM DTCs. Perform 5 ignition key cycles leaving the ignition key on for 90 seconds per cycle. With the DRBIII® scan tool, display PCM DTCs. Does the DRBIII® scan tool display the same DTC? If yes, replace PCM. Program the new PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) . If no, test is complete.
5. The conditions that set the DTC are not present at this time. The following may help in identifying the intermittent condition. With the engine running at normal operating temperature, monitor the DRBIII® scan tool parameters related to the DTC while wiggling the wiring harness. Look for parameter values to change and/or a DTC to set. Review the DRBIII® scan tool Freeze Frame information. If possible try to duplicate the conditions under which the DTC was set. Refer to any Technical Service Bulletins (TSB) that may apply. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Were any of the above conditions present? If yes, repair as necessary. If no, test is complete.

DTC P1695: NO CCD/J1850 MESSAGE FROM BODY CONTROL MODULE

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-1 under VERIFICATION TESTS to ensure system is functioning properly.

Circuit is monitored with the ignition on and battery voltage greater than 10.4 volts. DTC will set if no Bus messages are received from the BCM for 20 seconds.

1. Intermittent Condition
2. Communication With BCM
3. PCI Bus Circuit Open
4. PCM

1. Turn the ignition on. With the DRBIII® scan tool, erase DTCs. Cycle the ignition key on and off several times leaving the ignition on for at least 20 seconds. With the DRBIII® scan tool, read DTCs. Does the DTC reset? If yes, go to next step. If no, go to step 4 .
2. With the DRBIII® scan tool, attempt to communicate with BCM. Can communication can be established with BCM? If yes, go to next step. If no, repair the communication problem. See the «BODY DIAGNOSTIC PROCEDURES»(/dodge/grand-caravan/iv-2000-2007/remont/collisionavoidance/#body-diagnostic-procedures) article in ACCESSORIES & EQUIPMENT.
3. Turn the ignition off. Disconnect the Powertrain Control Module (PCM) harness connector. Disconnect the BCM harness connector. Inspect the PCI Bus terminal at both the PCM connector and the BCM connector. Check for corrosion, damage or terminal push out. Repair connector as necessary. If connector is okay, measure the resistance of the PCI BUS circuit between the PCM harness connector and the BCM harness connector. Is the resistance below 5.0 ohms? If yes, replace PCM. Program the new PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) . If no, repair the PCI BUS circuit for an open.
4. The conditions that set the DTC are not present at this time. The following may help in identifying the intermittent condition. With the engine running at normal operating temperature, monitor the DRBIII® scan tool parameters related to the DTC while wiggling the wiring harness. Look for parameter values to change and/or a DTC to set. Review the DRBIII® scan tool Freeze Frame information. If possible try to duplicate the conditions under which the DTC was set. Refer to any Technical Service Bulletins (TSB) that may apply. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Were any of the above conditions present? If yes, repair as necessary. If no, test is complete.

DTC P1696: PCM FAILURE EEPROM WRITE DENIED OR DTC P1697: PCM FAILURE SRI MILE NOT STORED

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-1 under VERIFICATION TESTS to ensure system is functioning properly.

System is continuously monitored with ignition on. DTC will set when Powertrain Control Module (PCM) attempt to program/write to internal EEPROM fails. Also checks at power down.

1. DRBIII® Scan Tool Displays Write Failure
2. DRBIII® Scan Tool Displays Write Refused A Third Time
3. DRBIII® Scan Tool Displays SRI Mileage Invalid
4. Compare SRI Mileage With Odometer

1. With the DRBIII® scan tool, perform the SRI Memory Test. Does the DRBIII® scan tool display Write Failure? If yes, replace PCM. Program the new PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) . If no, go to next step.
2. With the DRBIII® scan tool, perform the SRI Memory Test. Does the DRBIII® scan tool display Write Refused? If yes, go to next step. If no, go to step 4 .
3. With the DRBIII® scan tool, perform the SRI Memory Test a second time. Retest the SRI Memory two more times. Does the DRBIII® scan tool display Write Refused again? If yes, replace PCM. Program the new PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) . If no, test is complete.
4. With the DRBIII® scan tool, perform the SRI Memory Test. Does the DRBIII® scan tool display SRI Mileage Invalid? If yes, update the mileage and retest the SRI Memory. If no, go to next step.
5. Compare the SRI Mileage stored with Instrument Panel Odometer. Is the mileage within the specified range displayed on the DRBIII® scan tool? If yes, test is complete. If no, update mileage and retest SRI memory.

DTC P1698: NO BUS MESSAGE FROM TRANS CONTROL MODULE

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-1 under VERIFICATION TESTS to ensure system is functioning properly.

Messages from Transmission Control Module (TCM), when equipped with a 4 speed automatic transmission, are monitored with ignition on and battery voltage greater than 10.4 volts. DTC will set if no bus messages are received from TCM for 20 seconds on 2 trips.

1. Intermittent Condition
2. Communication With TCM
3. PCM

1. Turn the ignition on. With the DRBIII® scan tool, erase DTCs. Cycle the ignition key on and off several times, leaving the ignition on for at least 20 seconds. With the DRBIII® scan tool, read DTCs. Does the DTC reset? If yes, go to next step. If no, go to step 3 .
2. With the DRBIII® scan tool, attempt to communicate with the TCM. Can communication be established with the TCM? If yes, go to next step. If no, perform the appropriate test related to no communication with TCM. See the «BODY DIAGNOSTIC PROCEDURES»(/dodge/grand-caravan/iv-2000-2007/remont/collisionavoidance/#body-diagnostic-procedures) article in ACCESSORIES & EQUIPMENT.
3. The conditions that set the DTC are not present at this time. The following may help in identifying the intermittent condition. With the engine running at normal operating temperature, monitor the DRBIII® scan tool parameters related to the DTC while wiggling the wiring harness. Look for parameter values to change and/or a DTC to set. Review the DRBIII® scan tool Freeze Frame information. If possible try to duplicate the conditions under which the DTC was set. Refer to any Technical Service Bulletins (TSB) that may apply. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Were any of the above conditions present? If yes, repair as necessary. If no, test is complete.

DTC P1899: PARK/NEUTRAL SWITCH STUCK IN PARK OR GEAR

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform 41TE TRANSMISSION VERIFICATION TEST VER-1 under VERIFICATION TESTS to ensure system is functioning properly.

Note. Park/Neutral switch may also be referred to as Transmission Range Sensor (TRS).

Circuit is monitored when transaxle is in Park, Neutral or Drive and not in limp-in mode. DTC will set if Powertrain Control Module (PCM) detects an incorrect Park/Neutral (P/N) switch state for a given mode of vehicle operation.

1. Intermittent Park/Neutral Switch
2. (T41) P/N Position Switch Sense Circuit Shorted To Ground
3. (T41) P/N Position Switch Sense Circuit Open
4. Transmission Range Sensor
5. TRS Internal Failure
6. PCM

1. Turn the ignition on. With the DRBIII® scan tool, read PCM DTCs. Is the good trip displayed and equal to zero? If yes, go to next step. If no, go step 7 .
2. Turn the ignition on. With the DRBIII® scan tool, read the Park/Neutral Position Switch input state. While moving the gear selector through all gear positions (Park to 1 and back to Park), monitor the DRBIII® scan tool display. Did the DRBIII® scan tool display show P/N and D/R in the correct gear positions? If yes, go step 7 . If no, go to next step.
3. Turn the ignition off. Disconnect the PCM harness connector. Disconnect the transmission range sensor harness connector. Measure the resistance between ground and the (T41) P/N position switch sense circuit. Is the resistance above 100 k/ohms? If yes, go to next step. If no, repair the short to ground in the (T41) P/N position switch sense circuit.
4. Turn the ignition off. Disconnect the PCM harness connector. Disconnect the transmission range sensor harness connector. Measure the resistance of the (T41) P/N position switch sense circuit. Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the (T41) P/N position switch sense circuit.
5. Turn the ignition off. Disconnect the PCM harness connector: Move the gear selector through all gear positions, from Park to 1st and back. While moving the gear selector through each gear, measure the resistance between ground and the (T41) P/N position switch sense circuit. Did the resistance change from below 10.0 ohms to above 10.0 ohms? If yes, go to next step. If no, replace the transmission range sensor.
6. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) .
7. At this time, the conditions required to set the DTC are not present. Use the freeze frame data to help duplicate the conditions that set the DTC. Pay particular attention to the DTC set conditions, such as, VSS, MAP, ECT, and Load. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Refer to any technical service bulletins (TSB) that may apply. Were any problems found? If yes, repair as necessary. If no, the test is complete.

POWERTRAIN VERIFICATION TEST VER-1

Note. If replacing Powertrain Control Module (PCM), the correct vehicle mileage and Vehicle Identification Number (VIN) must be programmed into PCM to prevent Diagnostic Trouble Codes (DTC) from being stored in Controller Anti-Lock Brake (CAB) module, Air Bag Control Module (ACM) and Sentry Key Immobilizer Module (SKIM). If replacing PCM and vehicle is equipped with SKIM, secret key data must also be updated to enable engine starting. See PROGRAMMING .

1. Inspect vehicle to ensure all engine components are connected properly. Reassemble and reconnect components as necessary. If repair procedure did not include replacing PCM, go to next step. If PCM has been replaced and has already been programmed, go to next step. If PCM has been replaced but has not been programmed, program PCM and clear DTCs. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) . After PCM is programmed, go to next step.
2. Inspect engine oil for fuel contamination. Change engine oil and filter as necessary. Attempt to start engine. If engine starts, go to next step. If engine does not start, go to appropriate TROUBLE SHOOTING - NO CODES article for additional testing. Also, refer to any technical service bulletins that may apply.
3. Run engine for one warm-up cycle to verify operation. Using scan tool, confirm that no DTCs or secondary indicators are present and that all components are functioning properly. If a DTC is present, repair is not complete. Perform appropriate test. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__diagnostic-trouble-code-definitions) . If no DTCs are present, repair is complete.

POWERTRAIN VERIFICATION TEST VER-2

Note. If replacing Powertrain Control Module (PCM), the correct vehicle mileage and Vehicle Identification Number (VIN) must be programmed into PCM to prevent Diagnostic Trouble Codes (DTC) from being stored in Controller Anti-Lock Brake (CAB) module, Air Bag Control Module (ACM) and Sentry Key Immobilizer Module (SKIM). If replacing PCM and vehicle is equipped with SKIM, secret key data must also be updated to enable engine starting. See PROGRAMMING .

1. Inspect vehicle to ensure all engine components are connected properly. Reassemble and reconnect components as necessary. Using scan tool, clear DTCs and Reset Memory all engine values. Run engine for one warm-up cycle to verify proper operation. Road test vehicle and use all accessories that may be related to repair.
2. Using scan tool, confirm that no DTCs or secondary indicators are present and that all components are functioning properly. Verify symptom is no longer present. If symptom is still present or any other symptom is present, go to appropriate TROUBLE SHOOTING - NO CODES article for additional testing. Also, refer to any technical service bulletins that may apply.
3. If any DTCs are present, perform appropriate test. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__diagnostic-trouble-code-definitions) . If no DTCs are present and all components are functioning properly, repair is complete.

POWERTRAIN VERIFICATION TEST VER-4

Note. If replacing Powertrain Control Module (PCM), the correct vehicle mileage and Vehicle Identification Number (VIN) must be programmed into PCM to prevent Diagnostic Trouble Codes (DTC) from being stored in Controller Anti-Lock Brake (CAB) module, Air Bag Control Module (ACM) and Sentry Key Immobilizer Module (SKIM). If replacing PCM and vehicle is equipped with SKIM, secret key data must also be updated to enable engine starting. See PROGRAMMING .

1. Inspect vehicle to ensure all engine and speed control system components are connected. Reassemble and reconnect components as necessary. Using scan tool, record and erase Diagnostic Trouble Codes (DTC) from PCM.
2. Road test vehicle at a speed greater than 35 MPH. Turn speed control switch on. Press and release SET switch and verify speed control engages. If speed control engages, go to next step. If speed control does not engage, go to step 11 .
3. With speed control engaged, depress and hold ACCEL switch. If vehicle speed increases, release switch and go to next step. If vehicle speed does not increase, go to step 11 .
4. Press and hold COAST switch. If vehicle speed decreases, release switch and go to next step. If vehicle speed does not decrease, go to step 11 .
5. Depress and release CANCEL switch. If speed control disengages, go to next step. If speed control does not disengage, go to step 11 .
6. Bring vehicle speed back to 35 MPH and depress RESUME switch. If vehicle resumes previously set speed, go to next step. If vehicle does not resume previously set speed, go to step 11 .
7. Using caution, press and release brake pedal to activate brakelight switch. If speed control disengages, go to next step. If speed control does not disengage, go to step 11 .
8. Increase vehicle speed to more than 35 MPH. Press and release SET switch. If vehicle maintains new set speed, go to next step. If vehicle does not set or maintain a new set speed, go to step 11 .
9. Depress and release ON/OFF switch to OFF position. If speed control disengages, go to next step. If speed control did not disengage, go to step 11 .
10. Using scan tool, check for DTCs. If no DTCs are present and vehicle is operating as designed, repair is complete. If DTCs exist, or system is not operating as designed, go to next step.
11. If speed control does not operate properly or DTCs exist, refer to appropriate diagnostic or repair procedures. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__diagnostic-trouble-code-definitions) . Check for any related technical service bulletins that may apply.

POWERTRAIN VERIFICATION TEST VER-5

Note. If replacing Powertrain Control Module (PCM), the correct vehicle mileage and Vehicle Identification Number (VIN) must be programmed into PCM to prevent Diagnostic Trouble Codes (DTC) from being stored in Controller Anti-Lock Brake (CAB) module, Air Bag Control Module (ACM) and Sentry Key Immobilizer Module (SKIM). If replacing PCM and vehicle is equipped with SKIM, secret key data must also be updated to enable engine starting. See PROGRAMMING .

1. Inspect vehicle to ensure all engine components are connected. Reassemble and reconnect components as necessary. If any DTCs have not been diagnosed, perform appropriate diagnostic test. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__diagnostic-trouble-code-definitions) . If all DTCs have been diagnosed and repaired, go to next step.
2. Connect DRBIII® scan tool to Data Link Connector (DLC), if not previously done. Ensure fuel tank is at least 1/4 full. Turn off all accessories. Go to next step.
3. If repair procedure did not include replacing PCM, go to next step. If PCM has been replaced and has already been programmed, go to next step. If PCM has been replaced but has not been programmed, program PCM and clear DTCs. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) . After PCM has been programmed, go to next step.
4. Ensure all DTCs are cleared. If catalytic converter was replaced, select Miscellaneous Menu Option, then Catalyst Replaced and press enter. If a Comprehensive Component DTC was repaired, go to next step. If a Major OBD-II Monitor DTC was repaired, go to step 6 .
5. After the ignition has been off for at least 10 seconds, restart the vehicle and run for 2 minutes. Go to step 7 .
6. Using DRBIII® scan tool, monitor the appropriate pre-test enabling conditions until all conditions have been met. Once the conditions have been met, switch screen to the appropriate OBD-II monitor (audible beeps are heard when the monitor is running). Go to next step.
7. If the conditions cannot be duplicated, clear all DTCs. Did the OBD-II Monitor test run successfully and has the Good Trip counter changed to one or more? If yes, test is complete. If no, check for any related technical service bulletins that apply to symptom. If repaired DTC has reset, proceed to appropriate DTC test. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__diagnostic-trouble-code-definitions) . If necessary, go to appropriate TROUBLE SHOOTING - NO CODES article for diagnosis by symptom.

POWERTRAIN VERIFICATION TEST VER-6

Note. If replacing Powertrain Control Module (PCM), the correct vehicle mileage and Vehicle Identification Number (VIN) must be programmed into PCM to prevent Diagnostic Trouble Codes (DTC) from being stored in Controller Anti-Lock Brake (CAB) module, Air Bag Control Module (ACM) and Sentry Key Immobilizer Module (SKIM). If replacing PCM and vehicle is equipped with SKIM, secret key data must also be updated to enable engine starting. See PROGRAMMING .

1. Inspect vehicle to ensure all engine components are connected. Reassemble and reconnect components as necessary. If repair procedure did not include replacing PCM, go to next step. If PCM has been replaced and has already been programmed, go to next step. If PCM has been replaced but has not been programmed, program PCM and clear DTCs. See «PROGRAMMING»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l) . After PCM has been programmed, go to next step.
2. Inspect vehicle to ensure all engine components are connected. Reassemble and reconnect components as necessary. If any DTCs have not been diagnosed, perform appropriate diagnostic test. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__diagnostic-trouble-code-definitions) . If all DTCs have been diagnosed and repaired, go to next step.
3. The LDP Monitor Test Mode has been added to the DRBIII® scan tool to verify repairs to the LDP system. A DRBIII® scan tool software program was written which causes the PCM to run the LDP Monitor as part of this test. Test failures will be indicated through a stored DTC. Go to next step.
4. LDP Monitor Test Mode is a useful way to run a total system performance test. Use this test to verify any type of LDP system repair. Go to next step.
5. Software program makes temporary changes to operating mode of PCM. For this reason, it is critical that test not be interrupted. PCM's left in this mode as result of interrupted test will illuminate the MIL for 8-10 miles of driving with no DTCs stored. Erasing DTCs will not change this condition. Go to next step.
6. If a vehicle is found to be stuck in the mode described in the previous step, the LDP Dealer Test should be re-run in its entirety so that the software program in the DRBIII® scan tool can restore the PCM operating mode. Go to next step.
7. Note similarity to LDP Monitor screen found under DRBIII® scan tool Monitors. Failure modes are fewer in the System Test than DRBIII® scan tool LDP Monitor. System Test only stores Small Leak DTC to indicate problem with system. No other type of failure mode indication given. Go to next step.
8. System Test failure may have been, for example, due to a large leak, but the PCM will set the Small Leak DTC to indicate failures that occurred as part of the system test. Connect the DRBIII® scan tool to the data link connector. Start engine and turn all accessories off. Go to next step.
9. While test is being performed, PCM must see RPM, minimum MAP, No Vehicle speed and minimum Throttle Position (TP) sensor (at idle, in Park). With DRBIII® scan tool in System Tests, perform the LDP Monitor Test and follow the instructions on the screen. Are any DTCs or symptoms remaining? If no, test is complete. If yes, check for any related technical service bulletins that apply to symptom. If repaired DTC has reset, proceed to appropriate DTC test. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__diagnostic-trouble-code-definitions) . If necessary, go to appropriate TROUBLE SHOOTING - NO CODES article for diagnosis by symptom.

SKIS VERIFICATION TEST

Note. If replacing Powertrain Control Module (PCM), the correct vehicle mileage and Vehicle Identification Number (VIN) must be programmed into PCM to prevent Diagnostic Trouble Codes (DTC) from being stored in Controller Anti-Lock Brake (CAB) module, Air Bag Control Module (ACM) and Sentry Key Immobilizer Module (SKIM). If replacing PCM and vehicle is equipped with SKIM, secret key data must also be updated to enable engine starting. See PROGRAMMING .

Note. Sentry Key Immobilizer Module (SKIM) will only remain in secured access mode for 60 seconds. If incorrect unique Personal Identification Number (PIN) is entered 3 times, SKIM will be locked for one hour. To unlock SKIM, turn ignition on for one hour. When SKIM is locked, scan tool will display BUS +/- SIGNALS OPEN.

1. Obtain vehicle's unique Personal Identification Number (PIN) assigned to SKIM from vehicle owner or manufacturer. Remove all test equipment and jumper wires. Connect any disconnected components. Go to next step.
2. Connect DRBIII® scan tool to Data Link Connector (DLC). Turn ignition on. Using DRBIII® scan tool, select SKIM MODULE REPLACEMENT. Enter 4-digit PIN number to put SKIM in access mode. Go to next step.
3. Using DRBIII® scan tool, select THEFT ALARM, SKIM, MISCELLANEOUS, then select desired procedure and follow steps displayed on DRBIII® scan tool. If SKIM has been replaced, ensure all keys and remote transmitters to be used with vehicle are programmed into SKIM. Go to next step.
4. Using DRBIII® scan tool, clear DTCs. Perform 5 ignition key cycles (key on/key off) leaving key on for at least 90 seconds per key cycle. Using DRBIII® scan tool, read the SKIM DTCs. Are there any SKIM DTCs? If no, system is operating correctly and customer's complaint cannot be duplicated, repair is complete. If yes, perform appropriate test. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__diagnostic-trouble-code-definitions) .

41TE TRANSMISSION VERIFICATION TEST VER-1

Note. If Transmission Control Module (TCM) or torque converter was replaced, or transmission has been repaired or replaced, reprogram pinion factor and perform shift quality quick learn procedure. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION.

1. Inspect vehicle to ensure that all engine components are properly installed and connected. Reassemble or reconnect components as necessary. If all DTCs have been repaired, go to next step. If any DTCs have not been repaired, perform appropriate diagnostic procedure. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__diagnostic-trouble-code-definitions) .
2. Connect scan tool to Data Link Connector (DLC). Ensure fuel tank is at least 1/4 full. Turn all accessories off. Start engine and run until transmission temperature is more than 110°F (43°C). Check transmission fluid level. Adjust if necessary.
3. Test drive vehicle from a stop to 45 MPH with a constant throttle opening of 20-25 degrees 15-20 times, allowing transmission to upshift through all gears.
4. While driving at less than 25 MPH, make 5-8 wide open throttle kickdowns to 1st gear, allowing 5 seconds in 2nd and 3rd gears between each kickdown.
5. For a specific DTC, drive vehicle under conditions that were present when DTC was set. If equipped with Autostick®, upshift and downshift several times using the Autostick® feature during the road test.
6. Check for DTCs during road test. If no DTCs set, repair is complete. If a DTC sets, perform appropriate test. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(/dodge/grand-caravan/iv-2000-2007/remont/testing-diagnostics/#engine-controls-tests-wcodes-33l-38l__diagnostic-trouble-code-definitions) .

CARAVAN

See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.

GRAND CARAVAN

See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.

TOWN & COUNTRY

See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.

VOYAGER

See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.

See also:
• NO-START DIAGNOSIS
• THEORY & OPERATION - CARAVAN, TOWN & COUNTRY, & VOYAGER
• BODY DIAGNOSTIC PROCEDURES
• BASIC DIAGNOSTIC PROCEDURES - CARAVAN, TOWN & COUNTRY, & VOYAGER
• FUEL SYSTEMS
• DIAGNOSTIC PROCEDURE
• TRIP INDICATOR
• MONITORED CIRCUITS
• RETRIEVING DIAGNOSTIC TROUBLE CODES
• HARD FAILURES
• INTERMITTENT FAILURES
• SIMILAR CONDITIONS WINDOW
• FUEL SYSTEM PRESSURE RELEASE
• DIAGNOSTIC TROUBLE CODE DEFINITIONS
• POWERTRAIN VERIFICATION TEST VER-5
• CLEARING DIAGNOSTIC TROUBLE CODES
• P0106
• P0107
• P0108
• P0111
• P0117
• P0118
• P0121
• P0122
• P0123
• P0125
• P0131
• P0132
• P0133
• P0134
• P0135
• P0141
• P0171
• P0172
• P0201
• P0300
• P0320
• P0339
• P0340
• P0351
• P0420
• P0441
• P0442
• P0443
• P0460
• P0462
• P0500
• P0508
• P0509
• P0600
• P0645
• P0703
• P1192
• P1193
• P1195
• P1282
• P1294
• P1297
• P1299
• P1388
• P1389
• P1391
• P1398
• P1478
• P1486
• P1491
• P1494
• P1495
• P1496
• P1595
• P1598
• P1599
• P1685
• P1686
• P1695
• P1696
• P1698
• P1899
• COMPONENT LOCATIONS
• CONNECTOR IDENTIFICATION
• INTERMITTENT CONDITION
• POWERTRAIN VERIFICATION TEST VER-6
• POWERTRAIN VERIFICATION TEST VER-1
• POWERTRAIN VERIFICATION TEST VER-2
• POWERTRAIN VERIFICATION TEST VER-4
• SKIS VERIFICATION TEST
• 41TE TRANSMISSION VERIFICATION TEST VER-1