Home/Dodge/Pickup R1500/Dodge Pickup R1500 (1996-2010)/Repair manual/Testing & Diagnostics/Engine Controls Self-Diagnostics - 4.7L & 5.7L: Diagnosis
Contents Wiring diagrams Section: Testing & Diagnostics All sections

Engine Controls Self-Diagnostics - 4.7L & 5.7L: Diagnosis Dodge Pickup R1500

Testing & Diagnostics 102 illustrations ~2479 words

SELF-DIAGNOSTIC SYSTEM

CAUTIONWhen battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.

Note. 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.

Note. Throughout this article, models with California emissions may be referred to as Calif. or Calif. models. Vehicles from other states may be equipped with California emissions. Models with Federal emissions may be referred to as Federal or Federal models. Check underhood label for application.

New for 2003 for models equipped with the 4.7L is a combined Powertrain Control Module (PCM) and Transmission Control Module (TCM) in a single control module. This new module is the Next Generation Controller (NGC) and will be referred to as the PCM. New Diagnostics procedures and New DTCs are some of the changes you will see which reflect the new combined module technology. The PCM will have 4 color coded connectors C1 through C4, (C1-Black, C2-Gray, C3-White, C4-Green), each PCM connector will have 38 pins each. Two new tools are introduced to help in diagnosing and repairing the new PCM terminals and harness connectors. The Miller Terminal Removal Pick (3638) is introduced, you must use the Miller (3638) tool to release the connector terminals or harness and connector damage will occur. Also, the Miller Pinout Box (8815) is introduced, you must use the Miller (8815) tool to probe the PCM terminals or terminal damage will occur. There is also a new Verification Test and module replacement procedure for the new PCM.

New for 2003 models equipped with the 5.7L engine is the Next Generation Controller 2 (NGC2). The NGC2 controller removes RFE transmission control system and installs Electronic Throttle Control (ECT) module systems. ECT utilizes a new electronically controlled throttle body with two new TP sensors and accelerator pedal position sensors to control throttle opening. The NGC2 will be referred to as the PCM. The transmission control module is a separate controller (EATX). New Diagnostics procedures and New DTCs are some of the changes you will see which reflect the new combined module technology. The PCM will have 4 color coded connectors C1 through C4, (C1-Black, C2-Gray, C3-White, C4-Green), each PCM connector will have 38 pins each. Two new tools are introduced to help in diagnosing and repairing the new PCM terminals and harness connectors. The Miller Terminal Removal Pick (3638) is introduced, you must use the Miller (3638) tool to release the connector terminals or harness and connector damage will occur. Also, the Miller Pinout Box (8815) is introduced, you must use the Miller (8815) tool to probe the PCM terminals or terminal damage will occur. There is also a new Verification Test and module replacement procedure for the new PCM.

ON-BOARD DIAGNOSTICS

Note. Before performing any testing procedures, check for any related Technical Service Bulletins (TSB).

Note. Malfunction Indicator Light (MIL) may also be referred to as CHECK ENGINE light or SERVICE ENGINE SOON light.

MIL is located on instrument cluster, just below the tachometer and is displayed as an engine icon. When ignition is first turned on, MIL should come on and remain on for 2 seconds to verify bulb and circuit operation, and then go off. If MIL does not come on and remain on for 2 seconds and then go off when ignition is first turned on, check instrument cluster for diagnosis of MIL. See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT.

The Powertrain Control Module (PCM) monitors several different engine control system circuits. If malfunction occurs which affects vehicle emissions, a Diagnostic Trouble Code (DTC) will be set in PCM and PCM enters limp-in mode. In limp-in mode, PCM substitutes values for failed component and provides continuous engine operation. When DTC is set in PCM, the PCM will turn on MIL and MIL will remain on steady. In some instances, the MIL is turned on when the failure exists and DTC was set. These instances are referred to as one trip DTC. In many instances, the emission system must fail more then once before the PCM will turn on the MIL. These are referred to as a 2-trip DTC. For additional information for trip definition, see TRIP DEFINITION . If problem exists which does not affect vehicle emissions, a DTC will be set in PCM but MIL will not be turned on. OBD-II related DTCs are entered in PCM according to individual priority. The DTC priority determines when MIL is turned on and DTC self-erasure. For additional information for DTC priority and DTC self-erasure, see DIAGNOSTIC TROUBLE CODE PRIORITY & SELF-ERASURE . Non-emission related DTCs have no priority in which they are entered in the PCM.

PCM may not store a DTC for a monitored circuit even though a malfunction has occurred. This may happen because one of the criteria for DTC has not been met. For example, assume criteria for DTC requires PCM to monitor a specified sensor output circuit only when engine operates between 750 RPM and 2000 RPM. If the sensor output circuit becomes shorted to ground when engine is operating at 2400 RPM, DTC will not be set, as short to ground occurred at 2400 RPM which exceeds the limit when PCM monitors the circuit.

If PCM detects active engine misfire severe enough to cause catalytic converter damage, MIL will flash to warn the driver of possible damage and DTC will be set.

The PCM will turn off MIL when malfunction is not detected during 3 consecutive trips on all applications except an engine misfire monitor or fuel system monitor. For additional information on engine misfire monitor and fuel system monitor, see MONITORED CIRCUITS . The PCM will turn off MIL when malfunction is not detected during 3 engine misfire or fuel system monitor tests. The PCM performs engine misfire or fuel system monitor tests when engine is operating within 375 RPM and within 10 percent of the load of operating condition at which first malfunction was detected.

DTCs may be retrieved for system diagnosis. 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 and INTERMITTENT FAILURES .

Diagnostic Trouble Code Priority & Self-Erasure

With OBD-II, different OBD-II related Diagnostic Trouble Codes (DTC) have different priorities according to regulations. The DTC priority determines when Malfunction Indicator Light (MIL) will be turned on and DTC is erased or cleared from Powertrain Control Module (PCM). DTCs having a high priority will overwrite the lower priority DTCs. DTC priorities and description are as listed

  1. Priority "O" - This is a non-emission related DTC.
  2. Priority "1" - One-trip failure of a 2-trip DTC for non-fuel system and non-misfire conditions.
  3. Priority "2" - One-trip failure of a 2-trip DTC for fuel system rich or fuel system lean condition, or misfire condition.
  4. Priority "3" - Second trip failure for non-fuel system or non-misfire condition, or a one-trip failure.
  5. Priority "4" - Second trip failure for fuel system rich or fuel system lean and misfire condition, or a one-trip catalyst damaging misfire.

One-trip failures on a 2-trip DTC have low priority and 2-trip failures have higher priority. One and 2-trip failures for fuel system monitor and misfire monitor take precedence over non-fuel system and non-misfire failures. Non-emission related DTCs have no priority in which they are entered in the PCM.

After 3 good trips, PCM will turn off the MIL. Once MIL is turned off, trip counter is switched to a warm-up counter. PCM must not detect the recent malfunction during 40 warm-up cycles. 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). After 40 warm-up cycles with no malfunction, PCM will clear DTC from PCM. DTCs may be cleared from PCM using scan tool, but this will clear OBD-II monitor data such as counter information, warm-up cycles, trips and freeze frame data.

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 article (no response with a no-start condition) or appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT (all other no response conditions).
  2. Using DRBIII® scan tool read Diagnostic Trouble Codes (DTC). See «RETRIEVING DIAGNOSTIC TROUBLE CODES»(ref-157234-S21102842702003080700000) .
  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»(ref-157234-S18137324412003080700000) .

RETRIEVING DIAGNOSTIC TROUBLE CODES

Note. Ensure battery is fully charged before retrieving Diagnostic Trouble Codes (DTC).

  1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located below driver's side of instrument panel. (Scheme 291) Turn ignition on. Using scan tool manufacturer's instructions, read and record DTC messages (DRB scan tool) or DTCs (generic scan tool) and freeze frame data.
  2. If scan tool displays a NO RESPONSE message, perform appropriate system test. See appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT. Repair as necessary. If scan tool does not power up, check for loose cable connections or bad cable. If cable connections or cable is defective, repair or replace components as necessary, then recheck for DTCs. If cable connections and cable are okay, go to next step.
  3. Measure voltage between ground and terminal No. 16 (Pink wire) at DLC. Voltage should be at least 11 volts. If voltage is as specified, go to next step. If voltage is not as specified, check fuse No. 51 (20-amp) in Integrated Power Module (IPM). If fuse is okay, check Pink wire between fuse No. 12 and DLC. See COMPUTER DATA LINES in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
  4. Measure resistance between ground and terminals No. 4 (Black/Dark Green) and No. 5 (Orange/Black wire) at DLC. If both resistance readings are less than 5 ohms, ground circuits are okay and it may be necessary to try another scan tool or cable. If any resistance reading is 5 ohms or more, repair open in Black/Dark Green wire or Orange/Black wire. See COMPUTER DATA LINES in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
  5. If scan tool displays an error message, (i.e., USER-REQUESTED COLD BOOT or USER-REQUESTED WARM BOOT), follow scan tool manufacturer's instructions. If 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 appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
  6. If any DTCs are displayed, perform appropriate diagnostic test. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(ref-157234-S18137324412003080700000). After repair is complete, clear DTCs from 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.

Connect scan tool to Data Link Connector (DLC). DLC is located below driver's side of instrument panel. (Scheme 291) Turn ignition on. Using screen prompts on scan tool, clear DTCs from Powertrain Control Module (PCM). DTCs may be cleared from PCM if PCM does not detect the recent malfunction during 40 warm-up cycles. For additional information, see DIAGNOSTIC TROUBLE CODE PRIORITY & SELF-ERASURE.

DIAGNOSTIC TROUBLE CODE DEFINITIONS

Generic Scan Tool Code (1)DRB Scan Tool Message (1)
P0016CRANKSHAFT/CAMSHAFT TIMING MISALIGNMENT
P0031O2 SENSOR 1/1 HEATER CIRCUIT LOW
P003202 SENSOR 1/1 HEATER CIRCUIT HIGH
P0037O2 SENSOR 1/2 HEATER CIRCUIT LOW
P0038O2 SENSOR 1/2 HEATER CIRCUIT HIGH
P0051O2 SENSOR 2/1 HEATER CIRCUIT LOW
P0052O2 SENSOR 2/1 HEATER CIRCUIT HIGH
P0057O2 SENSOR 2/2 HEATER CIRCUIT LOW
P0058O2 SENSOR 2/2 HEATER CIRCUIT HIGH
P0068MAP SENSOR/TP SENSOR CORRELATION - VACUUM LEAK DETECTED (4.7L)
P0068MAP SENSOR/TP SENSOR CORRELATION - VACUUM LEAK DETECTED (5.7L)
P0070AMBIENT TEMPERATURE SENSOR STUCK
P0071AMBIENT TEMPERATURE SENSOR PERFORMANCE
P0072AMBIENT TEMPERATURE SENSOR CIRCUIT LOW
P0073AMBIENT TEMPERATURE SENSOR CIRCUIT HIGH
P0106MAP SENSOR PERFORMANCE
P0107MAP SENSOR CIRCUIT LOW
P0108MAP SENSOR CIRCUIT HIGH
P0110INTAKE AIR TEMPERATURE SENSOR STUCK
P0111INTAKE AIR TEMPERATURE SENSOR PERFORMANCE
P0112INTAKE AIR TEMPERATURE SENSOR CIRCUIT LOW
P0113INTAKE AIR TEMPERATURE SENSOR CIRCUIT HIGH
P0116ENGINE COOLANT TEMPERATURE CIRCUIT PERFORMANCE
P0117ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT LOW
P0118ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT HIGH
P0121THROTTLE POSITION SENSOR NO. 1 PERFORMANCE (4.7L)
P0121THROTTLE POSITION SENSOR NO. 1 PERFORMANCE (5.7L)
P0122THROTTLE POSITION SENSOR NO. 1 LOW (4.7L)
P0122THROTTLE POSITION SENSOR NO. 1 LOW (5.7L)
P0122 (2)THROTTLE POSITION SENSOR LOW
P0123THROTTLE POSITION SENSOR NO. 1 HIGH (4.7L)
P0123THROTTLE POSITION SENSOR NO. 1 HIGH (5.7L)
P0123 (2)THROTTLE POSITION SENSOR HIGH
P0124 (2)THROTTLE POSITION SENSOR INTERMITTENT
P0125INSUFFICIENT COOLANT TEMP FOR CLOSED - LOOP FUEL CONTROL
P0128THERMOSTAT RATIONALITY
P0129BAROMETRIC PRESSURE OUT-OF-RANGE
P0131O2 SENSOR 1/1 CIRCUIT LOW VOLTAGE
P0132O2 SENSOR 1/1 CIRCUIT HIGH VOLTAGE
P0133O2 SENSOR 1/1 SLOW RESPONSE
P0135O2 SENSOR 1/1 HEATER PERFORMANCE
P0137O2 SENSOR 1/2 CIRCUIT LOW VOLTAGE
P0138O2 SENSOR 1/2 CIRCUIT HIGH VOLTAGE
P0139O2 SENSOR 1/2 SLOW RESPONSE
P0141O2 SENSOR 1/2 HEATER PERFORMANCE
P0151O2 SENSOR 2/1 CIRCUIT LOW VOLTAGE
P0152O2 SENSOR 2/1 CIRCUIT HIGH VOLTAGE
P0153O2 SENSOR 2/1 SLOW RESPONSE
P0155O2 SENSOR 2/1 HEATER PERFORMANCE
P0157O2 SENSOR 2/2 CIRCUIT LOW VOLTAGE
P0158O2 SENSOR 2/2 CIRCUIT HIGH VOLTAGE
P0159O2 SENSOR 2/2 SLOW RESPONSE
P0161O2 SENSOR 2/2 HEATER PERFORMANCE
P0171FUEL SYSTEM 1/1 LEAN
P0172FUEL SYSTEM 1/1 RICH
P0174FUEL SYSTEM 2/1 LEAN
P0175FUEL SYSTEM 2/1 RICH
P0201FUEL INJECTOR NO. 1 CIRCUIT
P0202FUEL INJECTOR NO. 2 CIRCUIT
P0203FUEL INJECTOR NO. 3 CIRCUIT
P0204FUEL INJECTOR NO. 4 CIRCUIT
P0205FUEL INJECTOR NO. 5 CIRCUIT
P0206FUEL INJECTOR NO. 6 CIRCUIT
P0207FUEL INJECTOR NO. 7 CIRCUIT
P0208FUEL INJECTOR NO. 8 CIRCUIT
P0218 (2)HIGH TEMPERATURE OPERATION ACTIVATED
P0221THROTTLE POSITION SENSOR NO. 2 PERFORMANCE
P0222THROTTLE POSITION SENSOR NO. 2 LOW
P0223THROTTLE POSITION SENSOR NO. 2 HIGH
P0300MULTIPLE CYLINDER MISFIRE
P0301CYLINDER NO. 1 MISFIRE
P0302CYLINDER NO. 2 MISFIRE
P0303CYLINDER NO. 3 MISFIRE
P0304CYLINDER NO. 4 MISFIRE
P0305CYLINDER NO. 5 MISFIRE
P0306CYLINDER NO. 6 MISFIRE
P0307CYLINDER NO. 7 MISFIRE
P0308CYLINDER NO. 8 MISFIRE
P0315NO CRANK SENSOR LEARNED
P0325KNOCK SENSOR NO. 1 CIRCUIT
P0330KNOCK SENSOR NO. 1 CIRCUIT
P0335CRANKSHAFT POSITION SENSOR CIRCUIT
P0339CRANKSHAFT POSITION SENSOR INTERMITTENT
P0340CAMSHAFT POSITION SENSOR CIRCUIT
P0344CAMSHAFT POSITION SENSOR INTERMITTENT
P0351IGNITION COIL NO. 1 PRIMARY CIRCUIT
P0352IGNITION COIL NO. 2 PRIMARY CIRCUIT
P0353IGNITION COIL NO. 3 PRIMARY CIRCUIT
P0354IGNITION COIL NO. 4 PRIMARY CIRCUIT
P0355IGNITION COIL NO. 5 PRIMARY CIRCUIT
P0356IGNITION COIL NO. 6 PRIMARY CIRCUIT
P0357IGNITION COIL NO. 7 PRIMARY CIRCUIT
P0358IGNITION COIL NO. 8 PRIMARY CIRCUIT
P0420CATALYTIC 1/1 EFFICIENCY
P0432CATALYTIC 2/1 EFFICIENCY
P0440GENERAL EVAP SYSTEM FAILURE
P0441EVAP PURGE SYSTEM PERFORMANCE
P0442SYSTEM MEDIUM LEAK
P0443EVAP PURGE SOLENOID CIRCUIT
P0452NVLD PRESSURE SWITCH STUCK CLOSED
P0453NVLD PRESSURE SWITCH STUCK OPEN
P0455EVAP SYSTEM LARGE LEAK
P0456EVAP SYSTEM SMALL LEAK
P0461FUEL LEVEL SENSOR NO. 1 PERFORMANCE
P0462FUEL LEVEL SENSOR NO. 1 LOW
P0463FUEL LEVEL SENSOR NO. 1 HIGH
P0480LOW SPEED FAN CONTROL RELAY CIRCUIT
P0498NVLD CANISTER VENT VALVE SOLENOID CIRCUIT LOW
P0499NVLD CANISTER VENT VALVE SOLENOID CIRCUIT HIGH
P0501VEHICLE SPEED SIGNAL NO. 1 PERFORMANCE
P0503VEHICLE SPEED SIGNAL NO. 1 ERRATIC
P0506IDLE SPEED PERFORMANCE LOWER THAN EXCEPTED
P0507IDLE SPEED PERFORMANCE HIGHER THAN EXCEPTED
P0508IAC VALVE SIGNAL CIRCUIT LOW
P0509IAC VALVE SIGNAL CIRCUIT HIGH
P0513INVALID SKIM KEY
P0516BATTERY TEMPERATURE SENSOR LOW
P0517BATTERY TEMPERATURE SENSOR HIGH
P0522OIL PRESSURE CIRCUIT LOW
P0523OIL PRESSURE CIRCUIT HIGH
P0532A/C PRESSURE SENSOR LOW
P0533A/C PRESSURE SENSOR HIGH
P0551POWER STEERING SWITCH PERFORMANCE
P0562BATTERY VOLTAGE LOW
P0562 (2)LOW BATTERY VOLTAGE
P0563BATTERY VOLTAGE HIGH
P0571BRAKE SWITCH NO. 1 PERFORMANCE
P0572BRAKE SWITCH NO. 1 CIRCUIT LOW
P0573BRAKE SWITCH NO. 1 CIRCUIT HIGH
P0579SPEED CONTROL SWITCH NO. 1 PERFORMANCE (4.7L)
P0579SPEED CONTROL SWITCH NO. 1 PERFORMANCE (5.7L)
P0580SPEED CONTROL SWITCH NO. 1 LOW (4.7L)
P0580SPEED CONTROL SWITCH NO. 1 LOW (5.7L)
P0581SPEED CONTROL SWITCH NO. 1 HIGH (4.7L)
P0581SPEED CONTROL SWITCH NO. 1 HIGH (5.7L)
P0582SPEED CONTROL VACUUM SOLENOID CIRCUIT
P0585SPEED CONTROL SWITCH NO. 1 & NO. 2 CORRELATION
P0586SPEED CONTROL VENT SOLENOID CIRCUIT
P0591SPEED CONTROL SWITCH NO. 2 PERFORMANCE
P0592SPEED CONTROL SWITCH NO. 2 LOW
P0593SPEED CONTROL SWITCH NO. 2 HIGH
P0594SPEED CONTROL SERVO POWER CIRCUIT
P0600SERIAL COMMUNICATION LINK
P0601INTERNAL MEMORY CHECKSUM INVALID
P0604 (2)INTERNAL TCM
P0605 (2)INTERNAL TCM
P0606ECM/PCM PROCESSOR
P0613 (2)INTERNAL TCM
P0622GENERATOR FIELD CONTROL CIRCUIT
P0627FUEL PUMP RELAY CIRCUIT
P0630VIN NOT PROGRAMMED IN PCM
P0632ODOMETER NOT PROGRAMMED IN PCM
P0633SKIM KEY NOT PROGRAMMED IN PCM
P0642PRIMARY 5-VOLT SUPPLY LOW
P0643PRIMARY 5-VOLT SUPPLY HIGH
P0645A/C CLUTCH RELAY CIRCUIT
P0652AUXILIARY 5-VOLT SUPPLY LOW
P0653AUXILIARY 5-VOLT SUPPLY HIGH
P0685ASD RELAY CONTROL CIRCUIT
P0688ASD RELAY SENSE CIRCUIT LOW
P0700TRANSMISSION CONTROL SYSTEM (MIL REQUEST)
P0703BRAKE SWITCH NO. 2 PERFORMANCE
P0706 (2)CHECK SHIFTER SIGNAL
P0711 (2)TRANSMISSION TEMPERATURE SENSOR PERFORMANCE
P0712 (2)TRANSMISSION TEMPERATURE SENSOR LOW
P0713 (2)TRANSMISSION TEMPERATURE SENSOR HIGH
P0714 (2)TRANSMISSION TEMPERATURE SENSOR INTERMITTENT
P0715 (2)INPUT SPEED SENSOR ERROR
P0720 (2)OUTPUT SPEED SENSOR ERROR
P0725 (2)ENGINE SPEED SENSOR CIRCUIT
P0731 (2)GEAR RATIO ERROR IN 1ST
P0732 (2)GEAR RATIO ERROR IN 2ND
P0733 (2)GEAR RATIO ERROR IN 3RD
P0734 (2)GEAR RATIO ERROR IN 4TH
P0735 (2)GEAR RATIO ERROR 4TH PRIME
P0736 (2)GEAR RATIO ERROR IN REVERSE
P0740 (2)TORQUE CONVERTER CLUTCH CONTROL CIRCUIT
P0750 (2)LR SOLENOID CIRCUIT
P0755 (2)2C SOLENOID CIRCUIT
P0760 (2)OD SOLENOID CIRCUIT
P0765 (2)UD SOLENOID CIRCUIT
P0770 (2)4C SOLENOID CIRCUIT
P0836 (2)4WD MUX SWITCH STUCK
P0837 (2)4WD SWITCH PERFORMANCE
P0838 (2)4WD MODE SENSOR LOW
P0839 (2)4WD MODE SENSOR HIGH
P0841 (2)LR PRESSURE SWITCH SENSE CIRCUIT
P0845 (2)2C HYDRAULIC PRESSURE TEST FAILURE
P0846 (2)2C PRESSURE SWITCH SENSE CIRCUIT
P0850PARK/NEUTRAL SWITCH PERFORMANCE
P0868 (2)LINE PRESSURE LOW
P0869 (2)LINE PRESSURE HIGH
P0870 (2)OD HYDRAULIC PRESSURE TEST FAILURE
P0871 (2)OD PRESSURE SWITCH SENSE CIRCUIT
P0875 (2)UD HYDRAULIC PRESSURE TEST FAILURE
P0876 (2)UD PRESSURE SWITCH SENSE CIRCUIT
P0884 (2)POWER UP AT SPEED
P0888 (2)RELAY OUTPUT ALWAYS OFF
P0890 (2)SWITCHED BATTERY
P0891 (2)TRANSMISSION RELAY ALWAYS ON
P0932 (2)LINE PRESSURE SENSOR CIRCUIT FAULT
P0934 (2)LINE PRESSURE SENSOR LOW
P0935 (2)LINE PRESSURE SENSOR HIGH
P0944 (2)LOSS OF PRIME
P0987 (2)4C HYDRAULIC PRESSURE TEST FAILURE
P0988 (2)4C PRESSURE SWITCH SENSE CIRCUIT
P1115GENERAL TEMPERATURE RATIONALITY
P1501VSS 1/2 CORRELATION - DRIVE WHEELS
P1502VSS 1/2 CORRELATION - NON DRIVE WHEELS
P1572BRAKE PEDAL STUCK ON
P1573BRAKE PEDAL STUCK OFF
P1593SPEED CONTROL SWITCH NO. 1 & NO. 2 STUCK (5.7L)
P1602PCM NOT PROGRAMMED
P1603PCM INTERNAL DUAL-PORT RAM COMMUNICATION
P1604PCM INTERNAL DUAL-PORT RAM READ/WRITE INTEGRITY FAILURE
P1607PCM INTERNAL SHUTDOWN TIMER RATIONALITY
P1618PRIMARY 5-VOLT SUPPLY ERRATIC
P1628AUXILIARY 5-VOLT SUPPLY ERRATIC
P1684 (2)BATTERY WAS DISCONNECTED
P1686NO SKIM BUS MESSAGES
P1687NO CLUSTER BUS MESSAGE
P1694 (2)BUS COMMUNICATION WITH ENGINE MODULE
P1695NO BODY BUS MESSAGE
P1696PCM FAILURE EEPROM WRITE DENIED
P1697PCM FAILURE SRI MILES NOT STORED
P1698NO BUS MESSAGE FROM TRANS CONTROL MODULE
P1715 (2)RESTRICTED PORT IN T3 RANGE
P1736 (2)GEAR RATIO ERROR IN 2ND PRIME
P1775 (2)SOLENOID SWITCH VALVE LATCHED IN TCC POSITION
P1776 (2)SOLENOID SWITCH VALVE LATCH IN LR POSITION
P1790 (2)FAULT IMMEDIATELY AFTER SHIFT
P1793 (2)TRD LINK COMMUNICATION ERROR
P1794 (2)SPEED SENSOR GROUND ERROR
P2100ELECTRONIC THROTTLE CONTROL MOTOR CIRCUIT
P2101ELECTRONIC THROTTLE CONTROL MOTOR PERFORMANCE
P2106ETC SYSTEM - FORCED LIMITED POWER
P2107ELECTRONIC THROTTLE CONTROL MODULE PROCESSOR
P2108ELECTRONIC THROTTLE CONTROL MODULE PERFORMANCE
P2110ELECTRONIC THROTTLE CONTROL - FORCED LIMIT RPM
P2111ELECTRONIC THROTTLE CONTROL - UNABLE TO CLOSE
P2112ELECTRONIC THROTTLE CONTROL - UNABLE TO OPEN
P2115ACCELERATOR PEDAL POSITION SENSOR NO. 1 MINIMUM STOP PERFORMANCE
P2116ACCELERATOR PEDAL POSITION SENSOR NO. 2 MINIMUM STOP PERFORMANCE
P2118ELECTRONIC THROTTLE CONTROL MOTOR CURRENT PERFORMANCE
P2122ACCELERATOR PEDAL POSITION SENSOR NO. 1 LOW
P2123ACCELERATOR PEDAL POSITION SENSOR NO. 1 HIGH
P2127ACCELERATOR PEDAL POSITION SENSOR NO. 2 LOW
P2128ACCELERATOR PEDAL POSITION SENSOR NO. 2 HIGH
P2135THROTTLE POSITION SENSOR NO. 1 & NO. 2 VOLTAGE CORRELATION
P2138ACCELERATOR PEDAL POSITION SENSOR NO. 1 & NO. 2 VOLTAGE CORRELATION
P2161VEHICLE SPEED SIGNAL NO. 2 ERRATIC
P2166ACCELERATOR PEDAL POSITION SENSOR NO. 1 MAXIMUM STOP PERFORMANCE
P2167ACCELERATOR PEDAL POSITION SENSOR NO. 2 MAXIMUM STOP PERFORMANCE
P2172HIGH AIRFLOW/VACUUM LEAK DETECTED (INSTANTANEOUS ACCUMULATION)
P2173HIGH AIRFLOW/VACUUM LEAK DETECTED (SLOW ACCUMULATION)
P2174LOW AIRFLOW/RESTRICTION DETECTED (INSTANT ACCUMULATION)
P2175LOW AIRFLOW/RESTRICTION DETECTED (SLOW ACCUMULATION)
P2181COOLING SYSTEM PERFORMANCE
P2299BRAKE SWITCH POSITION/APPS INCOMPATIBLE
P2302IGNITION COIL NO. 1 SECONDARY CIRCUIT - INSUFFICIENT IONIZATION
P2305IGNITION COIL NO. 2 SECONDARY CIRCUIT - INSUFFICIENT IONIZATION
P2308IGNITION COIL NO. 3 SECONDARY CIRCUIT - INSUFFICIENT IONIZATION
P2311IGNITION COIL NO. 4 SECONDARY CIRCUIT - INSUFFICIENT IONIZATION
P2314IGNITION COIL NO. 5 SECONDARY CIRCUIT - INSUFFICIENT IONIZATION
P2317IGNITION COIL NO. 6 SECONDARY CIRCUIT - INSUFFICIENT IONIZATION
P2320IGNITION COIL NO. 7 SECONDARY CIRCUIT - INSUFFICIENT IONIZATION
P2323IGNITION COIL NO. 8 SECONDARY CIRCUIT - INSUFFICIENT IONIZATION
P2503CHARGING SYSTEM OUTPUT LOW
P2700 (2)INADEQUATE ELEMENT VOLUME LR
P2701 (2)INADEQUATE ELEMENT VOLUME 2C
P2702 (2)INADEQUATE ELEMENT VOLUME OD
P2703 (2)INADEQUATE ELEMENT VOLUME UD
P2704 (2)INADEQUATE ELEMENT VOLUME 4C
P2706 (2)MS SOLENOID CIRCUIT
(1) Perform appropriate test under DIAGNOSTIC TESTS. (2) This DTC is related to automatic transmission diagnostics. For diagnostic procedure, see appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.
(1)Perform appropriate test under DIAGNOSTIC TESTS.
(2)This DTC is related to automatic transmission diagnostics. For diagnostic procedure, see appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.

DIAGNOSTIC TROUBLE DEFINITIONS

Scheme 289

Scheme 289: ACCELERATOR PEDAL POSITION SENSOR LOCATION

Scheme 290

Scheme 290: BATTERY TEMPERATURE SENSOR LOCATION

Scheme 291

Scheme 291: DATA LINK CONNECTOR LOCATION

Scheme 292

Scheme 292: ECT SENSOR LOCATION (4.7L/5.7L)

Scheme 293

Scheme 293: FUEL INJECTOR LOCATIONS

Scheme 294

Scheme 294: IGNITION COILS LOCATION (5.7L)

Scheme 295

Scheme 295: KNOCK SENSOR & MAP SENSOR LOCATION (5.7L)

Scheme 296

Scheme 296: TCM & PCM CONTROL MODULES LOCATION

Scheme 297

Scheme 297: EVAP CANISTER PURGE SOLENOID & EVAP SYSTEM SERVICE PORT LOCATION

Scheme 298

Scheme 298: EVAP SYSTEM CANISTERS LOCATION

Scheme 299

Scheme 299: FUEL PUMP MODULE & RELATED COMPONENTS LOCATION

Scheme 300

Scheme 300: INTEGRATED POWER MODULE LOCATION

Scheme 301

Scheme 301: LEAK DETECTION PUMP & RELATED COMPONENTS LOCATION

Scheme 302

Scheme 302: POWERTRAIN CONTROL MODULE LOCATION

Scheme 303

Scheme 303: TRANSMISSION RANGE SENSOR LOCATION

Scheme 304

Scheme 304: A/C COMPRESSOR CLUTCH CONNECTOR END VIEW

Scheme 305

Scheme 305: A/C PRESSURE TRANSDUCER CONNECTOR END VIEW

Scheme 306

Scheme 306: ACCELERATOR PEDAL POSITION SENSOR CONNECTOR END VIEW

Scheme 307

Scheme 307: AMBIENT TEMPERATURE SENSOR CONNECTOR END VIEW

Scheme 308

Scheme 308: BATTERY TEMPERATURE SENSOR HARNESS CONNECTOR END VIEW

Scheme 309

Scheme 309: BRAKE LIGHT SWITCH CONNECTOR END VIEW

Scheme 310

Scheme 310: BRAKE TRANSMISSION SHIFT INTERLOCK SOLENOID CONNECTOR END VIEW

Scheme 311

Scheme 311: C205 CONNECTOR END VIEW

Scheme 312

Scheme 312: CAMSHAFT POSITION SENSOR HARNESS CONNECTOR END VIEW

Scheme 313

Scheme 313: AUTO SHUTDOWN RELAY CONNECTOR END VIEW

Scheme 314

Scheme 314: CLOCKSPRING CONNECTOR END VIEW

Scheme 315

Scheme 315

Scheme 316

Scheme 316: CLUTCH INTERLOCK BRAKE SWITCH CONNECTOR END VIEW

Scheme 317

Scheme 317: COIL ON PLUG CONNECTOR END VIEW

Scheme 318

Scheme 318

Scheme 319

Scheme 319

Scheme 320

Scheme 320

Scheme 321

Scheme 321

Scheme 322

Scheme 322

Scheme 323

Scheme 323

Scheme 324

Scheme 324

Scheme 325

Scheme 325: CONDENSER FAN CONNECTOR END VIEW

Scheme 326

Scheme 326: CONTROLLER ANTI-LOCK BRAKE CONNECTOR END VIEW

Scheme 327

Scheme 327: CRANKSHAFT POSITION SENSOR HARNESS CONNECTOR END VIEW

Scheme 328

Scheme 328: DATA LINK CONNECTOR END VIEW

Scheme 329

Scheme 329: ELECTRIC BRAKE PROVISION CONNECTOR END VIEW

Scheme 330

Scheme 330: ELECTRONIC THROTTLE CONTROL MODULE CONNECTOR END VIEW (5.7L)

Scheme 331

Scheme 331: ENGINE COOLANT TEMPERATURE SENSOR HARNESS CONNECTOR END VIEW

Scheme 332

Scheme 332: ENGINE OIL PRESSURE SENSOR CONNECTOR END VIEW

Scheme 333

Scheme 333: EVAP PURGE SOLENOID CONNECTOR END VIEW

Scheme 334

Scheme 334: FUEL INJECTOR CONNECTOR END VIEW

Scheme 335

Scheme 335

Scheme 336

Scheme 336

Scheme 337

Scheme 337

Scheme 338

Scheme 338

Scheme 339

Scheme 339

Scheme 340

Scheme 340

Scheme 341

Scheme 341

Scheme 342

Scheme 342: FUEL PUMP MODULE HARNESS CONNECTOR END VIEW

Scheme 343

Scheme 343: GENERATOR CONNECTOR END VIEW

Scheme 344

Scheme 344: GOVERNOR PRESSURE SENSOR CONNECTOR END VIEW

Scheme 345

Scheme 345: IDLE AIR CONTROL MOTOR CONNECTOR END VIEW

Scheme 346

Scheme 346: IGNITION SWITCH CONNECTOR END VIEW

Scheme 347

Scheme 347: INPUT SPEED SENSOR CONNECTOR END VIEW

Scheme 348

Scheme 348: INTAKE AIR TEMPERATURE SENSOR HARNESS CONNECTOR END VIEW

Scheme 349

Scheme 349: INTEGRATED POWER MODULE AND IPM RELAY IDENTIFICATION AND CONNECTOR VIEWS

Scheme 350

Scheme 350

Scheme 351

Scheme 351

Scheme 352

Scheme 352

Scheme 353

Scheme 353

Scheme 354

Scheme 354: INTEGRATED POWER MODULE CONNECTOR VIEWS

Scheme 355

Scheme 355

Scheme 356

Scheme 356

Scheme 357

Scheme 357

Scheme 358

Scheme 358

Scheme 359

Scheme 359

Scheme 360

Scheme 360

Scheme 361

Scheme 361: LEAK DETECTION PUMP HARNESS CONNECTOR END VIEW

Scheme 362

Scheme 362: LINE PRESSURE SENSOR CONNECTOR END VIEW (4.7L)

Scheme 363

Scheme 363: MANIFOLD ABSOLUTE PRESSURE SENSOR CONNECTOR END VIEW

Scheme 364

Scheme 364: OUTPUT SPEED SENSOR HARNESS CONNECTOR END VIEW

Scheme 365

Scheme 365: OVERDRIVE SWITCH CONNECTOR END VIEW

Scheme 366

Scheme 366: OXYGEN SENSOR CONNECTOR END VIEW (COMPONENT SIDE)

Scheme 367

Scheme 367: POWER STEERING PRESSURE SWITCH CONNECTOR END VIEW

Scheme 368

Scheme 368: PCM HARNESS CONNECTOR END VIEW

Scheme 369

Scheme 369

Scheme 370

Scheme 370

Scheme 371

Scheme 371

Scheme 372

Scheme 372: SENTRY KEY IMMOBILIZER MODULE CONNECTOR END VIEW

Scheme 373

Scheme 373: SPEED CONTROL SERVO HARNESS CONNECTOR END VIEW

Scheme 374

Scheme 374: SPEED CONTROL SWITCH CONNECTOR END VIEW (ELECTRONIC THROTTLE CONTROL)

Scheme 375

Scheme 375

Scheme 376

Scheme 376: SPEED CONTROL SWITCH CONNECTOR END VIEW (EXCEPT ELECTRONIC THROTTLE CONTROL)

Scheme 377

Scheme 377

Scheme 378

Scheme 378: THROTTLE POSITION SENSOR HARNESS CONNECTOR END VIEW

Scheme 379

Scheme 379: TRANSMISSION SOLENOID/TRS ASSEMBLY CONNECTOR END VIEW

Scheme 380

Scheme 380: 4WD SWITCH (MANUAL TRANSFER CASE) CONNECTOR END VIEW

DIAGNOSTIC TESTS

CAUTIONWhen battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.

Note. Before diagnosing an engine performance problem, refer to SERVICE PRECAUTIONS under SELF-DIAGNOSTIC SYSTEM before proceeding.

Note. Before diagnosing an engine performance problem, refer to ON-BOARD DIAGNOSTICS under SELF-DIAGNOSTIC SYSTEM for diagnostic system functions, abilities and system diagnostic procedures.

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.

Note. Throughout this article, models with California emissions may be referred to as Calif. or Calif. models. Vehicles from other states may be equipped with California emissions. Models with Federal emissions may be referred to as Federal or Federal models. Check underhood label for application.

Note. Before performing any testing procedures, check for any related Technical Service Bulletins (TSB).

DTC: P0452: NVLD PRESSURE SWITCH STUCK CLOSED

Note. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . If Powertrain Control Module (PCM) is replaced, PCM must be reprogrammed. See PROGRAMMING .

For testing procedures (Scheme 381)- (Scheme 383).

Scheme 381

Scheme 381: DTC: P0452: NVLD PRESSURE SWITCH STUCK CLOSED

Scheme 382

Scheme 382

Scheme 383

Scheme 383

POWERTRAIN VERIFICATION TEST VER-1

For testing procedures (Scheme 384)

Scheme 384

Scheme 384: POWERTRAIN VERIFICATION TEST VER-1

POWERTRAIN VERIFICATION TEST VER-2

For testing procedures (Scheme 385)

Scheme 385

Scheme 385: POWERTRAIN VERIFICATION TEST VER-2

POWERTRAIN VERIFICATION TEST VER-3

For testing procedures (Scheme 386)

Scheme 386

Scheme 386: POWERTRAIN VERIFICATION TEST VER-3

POWERTRAIN VERIFICATION TEST VER-4

For testing procedures (Scheme 387)

Scheme 387

Scheme 387: POWERTRAIN VERIFICATION TEST VER-4

POWERTRAIN VERIFICATION TEST VER-5

For testing procedures (Scheme 388)

Scheme 388

Scheme 388: POWERTRAIN VERIFICATION TEST VER-5

POWERTRAIN VERIFICATION TEST VER-6

For testing procedures (Scheme 389)

Scheme 389

Scheme 389: POWERTRAIN VERIFICATION TEST VER-6

TRANSMISSION VERIFICATION TEST VER-1

For testing procedures, see .

Scheme 390

Scheme 390: TRANSMISSION VERIFICATION TEST VER-1