INTRODUCTION
If no faults were found while performing BASIC TESTING , proceed with ENTERING ON-BOARD DIAGNOSTICS in this article. If no fault codes or only pass codes are present, proceed to H - TESTING W/O CODES article for diagnosis by symptom (i.e. ROUGH IDLE, NO START, etc.).
| Model Name | (1) Body Type |
|---|---|
| Daytona | AG |
| LeBaron Convertible & LeBaron Coupe | AJ |
| Horizon & Omni | AL |
| Shadow & Sundance | AP |
| (1) Some trouble shooting charts refer to body type without the "A" prefix. | |
| (1) | Some trouble shooting charts refer to body type without the "A" prefix. |
VEHICLE BODY IDENTIFICATION
The self-diagnostic capabilities of this system, if properly utilized, can simplify testing. The Single Board Engine Controller (SBEC) monitors several different engine control system circuits.
If a problem is sensed with a monitored circuit, a fault code is stored in the SBEC, the check engine light illuminates and SBEC enters limp-in mode. In limp-in mode, SBEC compensates for component failure by substituting information from other sources. This allows vehicle operation until repairs can be made.
Once codes are known, refer to FAULT CODES listed in this article to determine the questionable circuit. Test circuits and repair or replace components as required. If problem is repaired or ceases to exist, the SBEC cancels that fault code after 50 ignition on/off cycles. To clear codes, refer to CLEARING CODES in this article.
A specific fault code results from a particular system failure. It is NOT necessarily the reason for that failure. The fault code does not condemn a specific component. The fault code calls out a probable malfunction area.
HARD FAILURES
Hard failures cause check engine light to illuminate and remain on until the malfunction is repaired. If light comes on and remains on (light may flash) during vehicle operation, cause of malfunction must be determined using diagnostic (code) charts. If a sensor fails, SBEC will use a substitute value in its calculations, allowing engine operation in limp-in mode. In this condition, vehicle will run but driveability may be poor.
INTERMITTENT FAILURES
Intermittent failures may cause malfunction light to flicker or stay on until the intermittent fault goes away. The corresponding trouble code, however, will be retained in SBEC memory. If related fault does not reoccur within a certain time frame, related trouble code will be erased from SBEC memory. Intermittent failures can be caused by faulty sensor, bad connector or other wiring-related problems. See INTERMITTENTS in H - TESTING W/O CODES article.
DIAGNOSTIC PROCEDURE
Refer to ENTERING ON-BOARD DIAGNOSTICS to retrieve fault codes. If fault codes are NOT present and/or DRB-II (Diagnostic Readout Box-II) is used, proceed to one of the following tests
- Go to NO START TEST 1 (NS-1) chart if a no-start condition exists or engine stalls after start-up. Perform indicated VERIFICATION PROCEDURE chart after repairs. Ensure charts apply to engine being tested.
- Go to DRIVEABILITY TEST 1 (DR-1) chart if engine runs but has performance problems. Perform indicated VERIFICATION PROCEDURE chart after repairs. Ensure charts apply to engine being tested.
Note. When using trouble shooting charts for diagnosis, DO NOT skip any steps in chart or incorrect diagnosis may result.
Before proceeding with diagnosis, the following precautions must be followed
- Vehicle must have a fully charged battery and functional charging system.
- Probe SBEC connector from pin side. DO NOT backprobe SBEC connector.
- DO NOT cause short circuits when performing electrical tests. This will set additional fault codes, making diagnosis of original problem more difficult.
- DO NOT use a test light in place of a voltmeter.
- When checking for spark, ensure coil wire is NO more than 1/4" from ground. If coil wire is more than 1/4" from ground, damage to vehicle electronics and/or SBEC may result.
- DO NOT prolong testing of fuel injectors or engine may hydrostatically (liquid) lock.
- Always repair lowest fault code number (check engine light) or first fault displayed (DRB-II) first.
- Always perform verification test after repairs are made.
* PLEASE READ THIS FIRST *
Note. Manufacturer recommends using DRB-II (Diagnostic Readout Box-II, C-4805) to diagnose the system. Check engine light function has limited diagnostic usage.
CHECK ENGINE LIGHT DIAGNOSTIC MODE
- Start engine (if possible). Move transmission shift lever through all positions, ending in Park. Turn A/C switch on, then off (if equipped).
- Turn engine off. Without starting engine again, turn ignition on, off, on, off and on. Record 2-digit fault codes as displayed by flashing check engine light.
- For example, Code 23 is displayed as flash, flash, 4-second pause, flash, flash, flash. After a slightly longer pause, other codes stored are displayed in numerical order.
- Once check engine light begins to flash fault codes, it cannot be stopped. If you loose count, it will be necessary to start over. Code 55 indicates end of fault code display.
- Refer to FAULT CODES table to translate trouble code number to a system fault description (DRB-II display). Once trouble area is identified, refer to NO START TEST 1 (NS-1) or DRIVEABILITY TEST 1 (DR-1) trouble shooting chart to diagnose problem. Use trouble shooting chart titles to find appropriate chart.
- As an example, a 3.0L engine starts and runs, but has a driveability problem. Check engine light indicates a Code 14. Refer to FAULT CODES table to translate trouble code number to a system fault description (DRB-II display).
- When system fault description (DRB-II display) is obtained, refer to DRIVEABILITY TEST 1 (DR-1) since vehicle has a driveability problem. Follow DR-1 chart until it leads you to a diamond box that asks: IS FAULT MAP VOLTAGE TOO LOW? This box will refer you to DR-4 for diagnosis.
DRB-II DIAGNOSTIC MODE
- Turn ignition off. Attach DRB-II Tester (C-4805) to self-test connector. Connector is located in engine compartment near left shock tower.
- Start engine (if possible). With foot on brake, move transmission shift lever through all positions, ending in Park. Turn A/C switch on, then off (if equipped).
- Turn engine off. Without starting engine again, turn ignition on. Enter vehicle model year and engine size. Read fault data on DRB-II. Refer to NO START TEST 1 (NS-1) or DRIVEABILITY TEST 1 (DR-1) for your engine.
Note. Actuator, sensor, solenoid and switch tests available on DRB-II will vary depending on engine, transaxle and emission packages.
START COUNTER
- A start counter will appear along with fault displayed on DRB-II. As an example, DRB-II will display 0 SINCE THIS FAULT. The start counter shows how many engine starts have occurred since last fault was stored.
- This helps determine if fault is intermittent. Memory space limits start counter to first 3 faults. If more than 3 faults are stored, start counter will display third fault with a 3 +.
FAULT COUNTER
- A fault counter will appear along with fault displayed on DRB-II. As an example, DRB-II will display #1 OF 2 FAULTS. SBEC will store up to 8 fault messages. Faults are numbered in reverse order of setting.
- The most recent fault to occur will be number one. Vehicles without air conditioning will always have A/C CLUTCH RELAY CKT (circuit) stored in memory. This fault will always be number one if vehicle is not equipped with that option.
- If no fault messages are stored, DRB-II will display NO FAULTS with start run counter reading SINCE LAST ERASED. When no faults are stored, counter will reach a maximum of 255.
DRB-II SWITCH TEST MODE
The SBEC can only recognize high and low states on switch circuits. SBEC cannot tell the difference between an open or short circuit or a defective switch. The DRB-II display must change between INPUT HIGH and INPUT LOW.
DRB-II READ INPUT STATES
This mode on DRB-II allows technician to read input states of Z1 voltage sense, park/neutral switch, brake switch, A/C switch, speed control resume, on/off and set switches. DRB-II will display INPUT HIGH and INPUT LOW as SBEC senses component status changing.
DRB-II READ OUTPUT STATES
This mode on DRB-II allows technician to read output states of speed control vacuum solenoid, purge solenoid, A/C clutch relay, radiator fan relay, ASD relay, check engine light, speed control vent solenoid and EGR solenoid. DRB-II will display ENERGIZED or DE-ENERGIZED as SBEC senses component status changing.
DRB-II ACTUATES SOLENOIDS & RELAYS
This state on DRB-II allows SBEC to actuate radiator fan relay, A/C clutch relay, ASD relay, purge solenoid, speed control servo solenoids and EGR solenoid. With tester in this state, SBEC can also actuate all solenoids and relays simultaneously. This test allows technician to observe components in operation.
DRB-II ACTUATES OUTPUTS
This mode on DRB-II allows SBEC to actuate ignition coil, fuel injectors (#1), fuel injectors (#2), fuel injectors (#3), AIS motor open and close, alternator field, tachometer output and fuel monitor signal. During this test DRB-II will read ACTUATING.
DRB-II READ SENSOR VOLTAGES
This mode on DRB-II allows technician to read battery temperature sensor, oxygen sensor, coolant temperature sensor, TPS sensor, minimum throttle in volts, knock sensor, battery voltage and MAP sensor.
DRB-II READ SENSOR VALUES
This mode on DRB-II allows technician to read coolant temperature in degrees Fahrenheit or Centigrade, manifold pressure in inches of vacuum or kilopascals, AIS motor in steps, adaptive fuel factor in percent, barometric pressure in inches of mercury or kilopascals, engine speed in RPM, SBEC spark advance in degrees, vehicle speed given in MPH and oxygen sensor state given as center, rich or lean.
DRB-II ENGINE PARAMETERS
This mode on DRB-II allows technician to read engine RPM, total spark advance, MAP reading, barometric pressure, AIS motor, battery voltage and adaptive fuel factor.
DRB-II SET ENGINE RPM
This mode on DRB-II allows technician to set engine RPM at a fixed speed from 900-2000 in 100 RPM increments. This allows for accuracy of AIS motor control to be checked.
DRB-II EMISSIONS EMR TESTS
This mode on DRB-II allows technician to reset emission reminder light and mileage. This is only used on trucks.
DRB-II READ MODULE INFORMATION
This mode on DRB-II allows technician to read SBEC part number and application.
DRB-II SYSTEM MONITORS
This mode on DRB-II allows technician to read fuel control monitor, charging monitor, RPM monitor, speed control status, engine knock retard, boost monitor, secondary indicators, adaptive fuel factor, theft alarm status and DIS signal status.
DRB-II SPECIAL FUNCTIONS
This mode on DRB-II allows technician to actuate ASD fuel system test, minimum airflow idle speed and reset memory. When reset memory is selected, adaptive fuel, AIS counter, minimum throttle, erase fault data and reset all values can be selected.
BLANK MESSAGE SCREEN
- Connect DRB-II to a different vehicle. If message screen is still blank, DRB-II or cable adapter are faulty. Substitute to find faulty component. If message screen is not blank, DRB-II and cable adapter are functioning properly.
- Inspect diagnostic connector for proper wire placement, damaged terminals or pushed out pins. Repair as necessary. If connector is okay, using an ohmmeter, check Black/White ground wire of diagnostic connector for continuity to ground. Repair as necessary.
Scheme 6
NO RESPONSE MESSAGE
- Ensure ignition is turned on. Disconnect SBEC 60-pin connector. Using an ohmmeter, check Pink wire of diagnostic connector for continuity to SBEC 60-pin connector cavity No. 25. (Scheme 7)through see scheme 10.
- Check Light Green wire of diagnostic connector for continuity to SBEC 60-pin connector cavity No. 45. (Scheme 7)through see scheme 10. If continuity is not present, repair circuit as necessary. If continuity is present, replace SBEC. Attempt retest. RAM TEST FAILURE Message - Replace DRB-II. CARTRIDGE ERROR Message - Replace DRB-II cartridge. KEY PAD TEST FAILURE Message - Power up DRB-II again with fingers off the keypad. If error message returns, replace DRB-II. HIGH OR LOW BATTERY Message - Correct condition of vehicle battery and reconnect DRB-II.
DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (NON-TURBO)
| Code | Display on DRB-II | Fault Condition | |
|---|---|---|---|
| 11 | IGN Reference Signal | No distributor reference signal pickup during cranking. | |
| 12 | Number of Key-Ons Since Last Fault Or Since Faults Were Released | Direct battery input to SBEC was disconnected within last 50-100 ignition key-ons. | |
| 13 | Map Pneumatic Signal | No difference in MAP sensor signal is detected. | |
| 13 | Map Pneumatic Change | No difference is detected between MAP reading & stored barometric pressure reading. | |
| 14 | Map Voltage Too Low | MAP sensor input less than minimum acceptable voltage. | |
| 14 | Map Voltage Too High | MAP sensor input more than maximum acceptable voltage. | |
| 15 | Vehicle Speed Signal | No distance sensor signal detectedwith road load conditions. | |
| 17 | Low Engine Temp | Coolant temperature stays below normal operating temperature during vehicle operation. | |
| 21 | O2 Sensor Signal | No rich or lean signal is detectedfrom O2 sensor input. | |
| 21 | O2 Sensor Shorted Hi | Oxygen sensor input voltage maintained above normal operating range. | |
| 22 | Coolant Voltage Low | Coolant temperature sensor input below minimum acceptable voltage. | |
| 22 | Coolant Voltage High | Coolant temperature sensor input above maximum acceptable voltage. | |
| 23 | (1) T/B Temp Voltage Low | Throttle body temperature sensor input below minimum acceptable voltage. | |
| 23 | (1) T/B Temp Voltage Hi | Throttle body temperature sensor input above maximum acceptable voltage. | |
| 24 | TPS Voltage Low | TPS sensor output less than minimum acceptable voltage. | |
| 24 | TPS Voltage High | TPS sensor output more than maximum acceptable voltage. | |
| BO) 25 | AIS Motor Circuits | Shorted condition detected in one or more Auto Idle Speed control circuits. | |
| 27 | INJ 1 Control Circuit | INJ 1 injector bank output driver stage does not respond correctly to SBEC control signal. | |
| 31 | Purge Solenoid Ckt | Open or shorted condition is detected in purge purge solenoid circuit. | |
| 32 | EGR Solenoid Circuit | Open or shorted condition is detected in EGR solenoid circuit (CA only). | |
| 32 | EGR System Failure | SBEC did not detect required air/fuel change during diagnostic test (CA only). | |
| 33 | A/C Clutch Relay Ckt | Open or shorted condition detected in A/C clutch relay circuit. | |
| 34 | S/C Servo Solenoids | Open or shorted condition detected in speed control vacuum or vent solenoid circuits. | |
| 35 | Radiator Fan Relay | Open or shorted condition detected in radiator fan relay circuit. | |
| 37 | PTU Solenoid Circuit | Open or shorted condition detected in torque converter part throttle unlock solenoid circuit. | |
| 41 (4) | Alternator Field Ckt | Open or shorted condition detected in alternator field circuit. | |
| 42 | ASD Relay Circuit | Open or shorted condition detected in ASD relay circuit. | |
| 42 | (2) Z1 Voltage Sense | No battery voltage sensed when ASD relay is energized. | |
| 45 (2) | Boost Limit Exceeded | MAP reading above overboost limit detected during engine operation. | |
| 46 | Battery Voltage High | Battery voltage sense input more than target charging voltage during engine operation. | |
| 47 | Charging Output Low | Battery voltage sense input less than target charging voltage during engine operation and no significant change in voltage detected during active test of alternator output. | |
| 51 | Lean F/A Condition | O2 sensor input indicates lean air/fuel ratio during engine operation. | |
| 52 | Rich F/A Condition | O2 sensor input indicates rich air/fuel ratio during engine operation. | |
| 53 | Internal Self-Test | SBEC detects internal failure. | |
| 54 (2) | Sync Pick-Up Signal | No high data rate detected during engine rotation. | |
| 55 | (3) | Completion of fault code display by check engine light. | |
| 61 (2) | Baro Read Solenoid | Open or shorted condition detected in baro read solenoid circuit. | |
| 62 | EMR Miles Not Stored | Unsuccessful attempt to update EMR mileage in SBEC EEPROM (trucks only). | |
| 63 | EEPROM Write Denied | Unsuccessful attempt to write to an EEPROM location by SBEC. | |
| N/A | Fault Code Error | DRB-II does not recognize fault identification | |
| (1) Single-point fuel injection. (2) Multi-point fuel injection. (3) No display on DRB-II. (4) For Diagnostics, see ALTERNATOR & REGULATOR article. | |||
| (1) | Single-point fuel injection. |
| (2) | Multi-point fuel injection. |
| (3) | No display on DRB-II. |
| (4) | For Diagnostics, see ALTERNATOR & REGULATOR article. |
DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (NON-TURBO)
DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (TURBO)
| Code | Display on DRB-II | Fault Condition | |
|---|---|---|---|
| 11 | IGN Reference Signal | No distributor reference signal pickup during cranking. | |
| 12 | Number of Key-Ons Since Last Fault Or Since Faults Were Released | Direct battery input to SBEC was disconnected within last 50-100 ignition key-ons. | |
| 13 | Map Pneumatic Signal | No difference in MAP sensor signal is detected. | |
| 13 | Map Pneumatic Change | No difference is detected between MAP reading & stored barometric pressure reading. | |
| 14 | Map Voltage Too Low | MAP sensor input less than minimum acceptable voltage. | |
| 14 | Map Voltage Too High | MAP sensor input more than maximum acceptable voltage. | |
| 15 | Vehicle Speed Signal | No distance sensor signal detectedwith road load conditions. | |
| 17 | Low Engine Temp | Coolant temperature stays below normal operating temperature during vehicle operation. | |
| 21 | O2 Sensor Signal | No rich or lean signal is detectedfrom O2 sensor input. | |
| 21 | O2 Sensor Shorted Hi | Oxygen sensor input voltage maintained above normal operating range. | |
| 22 | Coolant Voltage Low | Coolant temperature sensor input below minimum acceptable voltage. | |
| 22 | Coolant Voltage High | Coolant temperature sensor input above maximum acceptable voltage. | |
| 23 | (1) Charge Temp Volt Low | Charge temperature sensor input below minimum acceptable voltage. | |
| 23 | (1) Charge Temp Volt Hi | Charge temperature sensor input above maximum acceptable voltage. | |
| 24 | TPS Voltage Low | TPS sensor output less than minimum acceptable voltage. | |
| 24 | TPS Voltage High | TPS sensor output more than maximum acceptable voltage. | |
| 25 | AIS Motor Circuits | Shorted condition detected in one or more Auto Idle Speed control circuits. | |
| 27 | INJ 1 Control Circuit | INJ 1 injector bank output driver stage does not respond correctly to SBEC control signal. | |
| 27 | INJ 2 Control Circuit | INJ 2 injector bank output driver stage does not respond correctly to SBEC control signal. | |
| 27 | INJ 3 Control Circuit | INJ 3 injector bank output driver stage does not respond correctly to SBEC control signal. | |
| 27 | INJ 4 Control Circuit | INJ 4 injector bank output driver stage does not respond correctly to SBEC control signal. | |
| 31 | Purge Solenoid Ckt | Open or shorted condition is detected in purge purge solenoid circuit. | |
| 33 | A/C Clutch Relay Ckt | Open or shorted condition detected in A/C clutch relay circuit. | |
| 34 | S/C Servo Solenoids | Open or shorted condition detected in speed control vacuum or vent solenoid circuits. | |
| 35 | Radiator Fan Relay | Open or shorted condition detected in radiator fan relay circuit. | |
| 36 | (1) VNT Solenoid #3 Ckt | Open or shorted condition detected in VNT solenoid No. 3 circuit. | |
| 37 | PTU Solenoid Circuit | Open or shorted condition detected in torque converter part throttle unlock solenoid circuit. | |
| 41 (4) | Alternator Field Ckt | Open or shorted condition detected in alternator field circuit. | |
| 42 | (2) Z1 Voltage Sense | No battery voltage sensed when ASD relay is energized. | |
| 45 (2) | Boost Limit Exceeded | MAP reading above overboost limit detected during engine operation. | |
| 46 | Battery Voltage High | Battery voltage sense input more than target charging voltage during engine operation. | |
| 47 | Charging Output Low | Battery voltage sense input less than target charging voltage during engine operation and no significant change in voltage detected during active test of alternator output. | |
| 51 | Lean F/A Condition | O2 sensor input indicates lean air/fuel ratio during engine operation. | |
| 52 | Rich F/A Condition | O2 sensor input indicates rich air/fuel ratio during engine operation. | |
| 53 | Internal Self-Test | SBEC detects internal failure. | |
| 54 (2) | Sync Pick-Up Signal | No high data rate detected during engine rotation. | |
| 55 | (3) | Completion of fault code display by check engine light. | |
| 61 (2) | Baro Read Solenoid | Open or shorted condition detected in baro read solenoid circuit. | |
| 62 | EMR Miles Not Stored | Unsuccessful attempt to update EMR mileage in SBEC EEPROM (trucks only). | |
| 63 | EEPROM Write Denied | Unsuccessful attempt to write to an EEPROM location by SBEC. | |
| N/A | Fault Code Error | DRB-II does not recognize fault identification | |
| 64 (1) | VNT Solenoid #1 Ckt | Open or shorted condition detected in VNT solenoid No. 1 circuit. | |
| 65 (1) | VNT Solenoid #2 Ckt | Open or shorted condition detected in VNT solenoid No. 2 circuit. | |
| 67 (1) | VNT A-Side Control | MAP reading above boost goal for an extended time period. | |
| (1) Multi-point fuel injection Turbo IV. (2) Multi-point fuel injection. (3) No display on DRB-II. (4) For Diagnostics, see ALTERNATOR & REGULATOR article. | |||
| (1) | Multi-point fuel injection Turbo IV. |
| (2) | Multi-point fuel injection. |
| (3) | No display on DRB-II. |
| (4) | For Diagnostics, see ALTERNATOR & REGULATOR article. |
DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (TURBO)
EMISSION MAINTENANCE REMINDER (EMR) MILEAGE TRANSFER
Note. EMR information applies only to trucks, but will be referred to in flow charts.
- When SBEC is replaced, vehicle mileage must be copied from odometer to a replacement SBEC memory. Transfer of vehicle mileage will enable new SBEC to operate EMR light properly.
- Using DRB-II (C-4805), enter EMISSIONS EMR TESTS. Press YES key. Select test item EMR MEMORY CHECK. Press YES key. DRB-II will read EMR MEMORY CHECK ARE YOU SURE? YES, NO. Press YES key.
- DRB-II will display IS INSTRUMENT PANEL MILEAGE BETWEEN 9953 AND 10051? If vehicle mileage is within specification, EMR memory check is complete. Press YES key. If vehicle mileage is not within specification, go to next step.
- Press NO key. DRB-II will display DO YOU WANT TO CORRECT EMR MILEAGE? Press YES key. DRB-II will display ENTER MILEAGE SHOWN ON INSTRUMENT PANEL USE ENTER KEY TO END.
- Enter vehicle mileage. DO NOT enter tenths. When correct vehicle mileage is entered, press ENTER key. DRB-II will ask for verification of mileage entry. If mileage entry was accurate, press ENTER key. DRB-II will display EMR MEMORY CHECK TEST COMPLETE. Vehicle must travel at least 8 miles for reset to occur.
EMISSION MAINTENANCE REMINDER (EMR) LIGHT RESET PROCEDURE
Note. EMR information applies only to trucks, but will be referred to in flow charts.
- The Emission Maintenance Reminder (EMR) light is designed to be a reminder to service the vehicle emissions control system. It is not an emissions warning system, only a reminder to perform emissions servicing.
- The components to be serviced include PCV valve, oxygen sensor and some vacuum-operated components. EMR light will illuminate after a predetermined mileage.
- Using DRB-II, select EMISSIONS EMR TESTS. Select EMR MEMORY CHECK. Press F1 or F2 key on DRB-II until display reads RESET EMR LIGHT. Press YES key.
- Display will read RESET EMR LIGHT ARE YOUR SURE? YES, NO. Press YES key. When DRB-II is finished resetting, EMR light display will read EMR LIGHT RESET.
CLEARING CODES
Using DRB-II, select test ERASE FAULT DATA. Press YES key on DRB-II. DRB-II will display ARE YOU SURE? YES, NO. Press YES key on tester. Tester will display ERASING FAULT DATA X. When DRB-II is finished erasing fault codes, it will display FAULT DATA ERASED.
If DRB-II is not available, fault codes may be cleared by disconnecting negative battery cable for at least 15 seconds, allowing SBEC to clear fault codes.
VEHICLE SECURITY SYSTEM DIAGNOSIS
- Cycle ignition switch to ACCESSORY position 3 times, leaving ignition in ACCESSORY position. Security system is now in diagnostic mode. Park lights and taillights will flash verifying their operation. The horn will sound twice verifying trunk key cylinder is in proper position.
- Return ignition switch to OFF position. Turning ignition off will stop lights from flashing, but keep security system in diagnostic mode. With security system in diagnostic mode, vehicle horn will sound when switches are activated, verifying proper operation of switches.
- Begin diagnosis with all doors, hood and trunk closed. Open and close each door with a one-second delay between opening and closing. Vehicle horn will sound when door switch opens and when door switch closes.
- Open and close hood. Vehicle horn will sound when hood switch opens and when switch closes. Activate power door locks. Vehicle horn will sound when door locks are activated in LOCK position and again when door locks are activated to UNLOCK position.
- Using door key, lock and unlock vehicle doors with a one-second delay between locking and unlocking. Vehicle horn will sound when switch is locked and when switch is unlocked.
- Cycle ignition switch to RUN position. Vehicle horn will sound once, indicating ignition input is operating properly. Cycling ignition switch to RUN position will also take security system out of diagnostic mode.
- If horn does NOT sound during testing, this indicates no input from switch, faulty wiring or defective security system module. Security system module is located above glove box. If SBEC has been replaced recently, vehicle security system will not function until 20 engine cranks have occurred.
SUMMARY
If no hard fault codes (or only pass codes) are present, proceed to H - TESTING W/O CODES article diagnosis by symptom (i.e. ROUGH IDLE, NO START, etc.) or intermittent diagnosis procedures.
Scheme 7
Scheme 8
Scheme 9
Scheme 10
Scheme 11
Scheme 12
CODE CHARTS FOR NON-TURBO
Note. Some trouble shooting charts refer to Dakota and "S" body (Minivan). Information in this article DOES NOT apply to these vehicles. Some trouble shooting charts refer to body type without the "A" prefix.
Note. The following trouble shooting charts and illustrations are courtesy of Chrysler Motors.
NS-1: Circuit Diagram. Scheme 13
NS-1: Flow Chart (1 of 3). Scheme 14
NS-1: Flow Chart (2 of 3). Scheme 15
NS-1: Flow Chart (3 of 3). Scheme 16
NS-2: Flow Chart. Scheme 17
NS-3: Flow Chart. Scheme 18
NS-4: Circuit Diagram & Flow Chart (1 of 2). Scheme 19
NS-4: Flow Chart (2 of 2). Scheme 20
NS-5: Flow Chart. Scheme 21
NS-6: Circuit Diagram. Scheme 22
NS-6: Flow Chart (1 of 2). Scheme 23
NS-6: Flow Chart (2 of 2). Scheme 24
NS-7: Flow Chart (1 of 2). Scheme 25
NS-7: Flow Chart (2 of 2). Scheme 26
NS-8: Circuit Diagram & Flow Chart. Scheme 27
NS-9: Circuit Diagram & Flow Chart (1 of 2). Scheme 28
NS-9: Circuit Diagram & Flow Chart (2 of 2). Scheme 29
NS-10: Circuit Diagram & Flow Chart (1 of 2). Scheme 30
NS-10: Circuit Diagram & Flow Chart (2 of 2). Scheme 31
NS-11: Flow Chart. Scheme 32
NS-12: Circuit Diagram. Scheme 33
NS-12: Flow Chart (1 of 2). Scheme 34
NS-12: Flow Chart (2 of 2). Scheme 35
NS-13: Circuit Diagram. Scheme 36
NS-13: Flow Chart (1 of 3). Scheme 37
NS-13: Flow Chart (2 of 3). Scheme 38
NS-13: Flow Chart (3 of 3). Scheme 39
NS-14: Flow Chart. Scheme 40
NS-15: Flow Chart (1 of 2). Scheme 41
NS-15: Flow Chart (2 of 2). Scheme 42
DR-1: Flow Chart (1 of 5). Scheme 43
DR-1: Flow Chart (2 of 5). Scheme 44
DR-1: Flow Chart (3 of 5). Scheme 45
DR-1: Flow Chart (4 of 5). Scheme 46
DR-1: Flow Chart (5 of 5). Scheme 47
DR-2: Circuit Diagram & Flow Chart. Scheme 48
DR-3: Flow Chart. Scheme 49
DR-4: Flow Chart. Scheme 50
DR-5: Circuit Diagram & Flow Chart. Scheme 51
DR-6: Circuit Diagram. Scheme 52
DR-6: Circuit Diagram & Flow Chart. Scheme 53
DR-7: Circuit Diagram & Flow Chart. Scheme 54
DR-8: Circuit Diagram. Scheme 55
DR-8: Flow Chart. Scheme 56
DR-9: Circuit Diagram & Flow Chart. Scheme 57
DR-10: Circuit Diagram & Flow Chart. Scheme 58
DR-11: Circuit Diagram & Flow Chart. Scheme 59
DR-12: Circuit Diagram. Scheme 60
DR-12: Flow Chart. Scheme 61
DR-13: Circuit Diagram. Scheme 62
DR-13: Flow Chart. Scheme 63
DR-14: Flow Chart. Scheme 64
DR-15: Circuit Diagram. Scheme 65
DR-15: Flow Chart (1 of 2). Scheme 66
DR-15: Flow Chart (2 of 2). Scheme 67
DR-16: Circuit Diagram. Scheme 68
DR-16: Flow Chart. Scheme 69
DR-17: Circuit Diagram. Scheme 70
DR-17: Flow Chart. Scheme 71
DR-18: Flow Chart (1 of 2). Scheme 72
DR-18: Flow Chart (2 of 2). Scheme 73
DR-19: Circuit Diagram. Scheme 74
DR-19: Flow Chart (1 of 2). Scheme 75
DR-19: Flow Chart (2 of 2). Scheme 76
DR-20: Circuit Diagram. Scheme 77
DR-20: Flow Chart (C Body). Scheme 78
DR-21: Circuit Diagram. Scheme 79
DR-21: Flow Chart (1 of 2). Scheme 80
DR-21: Flow Chart (2 of 2). Scheme 81
DR-22: Flow Chart (C Body). Scheme 82
DR-23: Circuit Diagram. Scheme 83
DR-23: Flow Chart. Scheme 84
Dr-24: Flow Chart. Scheme 85
DR-25: Circuit Diagram (For 1 of 6). Scheme 86
DR-25: Flow Chart (1 of 6). Scheme 87
DR-25: Circuit Diagram (For 2 of 6). Scheme 88
DR-25: Flow Chart (2 of 6). Scheme 89
DR-25: Flow Chart (3 of 6). Scheme 90
DR-25: Flow Chart (4 of 6). Scheme 91
DR-25: Flow Chart (5 of 6). Scheme 92
DR-25: Flow Chart (6 of 6). Scheme 93
DR-26: Flow Chart (1 of 2). Scheme 94
DR-26: Flow Chart (2 of 2). Scheme 95
DR-27: Flow Chart. Scheme 96
DR-28: Flow Chart (1 of 3). Scheme 97
DR-28: Flow Chart (2 of 3). Scheme 98
DR-28: Flow Chart (3 of 3). Scheme 99
DR-29: Flow Chart. Scheme 100
DR-30: Flow Chart. Scheme 101
DR-31: Flow Chart. Scheme 102
DR-32: Flow Chart (1 of 2 ). Scheme 103
DR-32: Flow Chart (2 of 2). Scheme 104
DR-33: Flow Chart. Scheme 105
DR-34: Flow Chart. Scheme 106
DR-35: Flow Chart. Scheme 107
DR-36: Flow Chart. Scheme 108
DR-37: Flow Chart. Scheme 109
DR-38: Flow Chart. Scheme 110
VER-1: Flow Chart Verification Procedure 1. Scheme 111
VER-2: Flow Chart Verification Procedure 2 (1 of 2). Scheme 112
VER-2: Flow Chart Verification Procedure 2 (2 of 2). Scheme 113
VER-3: Flow Chart Verification Procedure 3 (1 of 2). Scheme 114
VER-3: Flow Chart Verification Procedure 3 (2 of 2). Scheme 115
NS-1: Flow Chart (1 of 3). Scheme 116
NS-1: Flow Chart (2 of 3). Scheme 117
NS-1: Flow Chart (3 of 3). Scheme 118
NS-2: Flow Chart (1 of 2). Scheme 119
NS-2: Flow Chart (2 of 2). Scheme 120
NS-3: Flow Chart (1 of 2). Scheme 121
NS-3: Circuit Diagram & Flow Chart (2 of 2). Scheme 122
NS-4: Flow Chart. Scheme 123
NS-5: Circuit Diagram. Scheme 124
NS-5: Flow Chart (1 of 2). Scheme 125
NS-5: Circuit Diagram & Flow Chart (2 of 2). Scheme 126
NS-6: Flow Chart. Scheme 127
NS-7: Circuit Diagram. Scheme 128
NS-7: Flow Chart (1 of 2). Scheme 129
NS-7: Flow Chart (2 of 2). Scheme 130
NS-8: Flow Chart (1 of 2). Scheme 131
NS-8: Flow Chart (2 of 2). Scheme 132
NS-9: Circuit Diagram. Scheme 133
NS-9: Flow Chart (1 of 2). Scheme 134
NS-9: Flow Chart (2 of 2). Scheme 135
NS-10: Circuit Diagram & Flow Chart (1 of 2). Scheme 136
NS-10: Circuit Diagram & Flow Chart (2 of 2). Scheme 137
NS-11: Flow Chart. Scheme 138
NS-12: Flow Chart (1 of 2). Scheme 139
NS-12: Flow Chart (2 of 2). Scheme 140
NS-13: Circuit Diagram & Flow Chart (1 of 2). Scheme 141
NS-13: Circuit Diagram & Flow Chart (2 of 2). Scheme 142
DR-1: Flow Chart (1 of 5). Scheme 143
DR-1: Flow Chart (2 of 5). Scheme 144
DR-1: Flow Chart (3 of 5). Scheme 145
DR-1: Flow Chart (4 of 5). Scheme 146
DR-1: Flow Chart (5 of 5). Scheme 147
DR-2: Circuit Diagram. Scheme 148
DR-2: Flow Chart. Scheme 149
DR-3: Flow Chart. Scheme 150
DR-4: Circuit Diagram & Flow Chart. Scheme 151
DR-5: Flow Chart. Scheme 152
DR-6: Circuit Diagram. Scheme 153
DR-6: Flow Chart. Scheme 154
DR-7: Circuit Diagram. Scheme 155
DR-7: Flow Chart. Scheme 156
DR-8: Circuit Diagram & Flow Chart. Scheme 157
DR-9: Circuit Diagram & Flow Chart. Scheme 158
DR-10: Circuit Diagram. Scheme 159
DR-10: Flow Chart. Scheme 160
DR-11: Circuit Diagram & Flow Chart. Scheme 161
DR-12: Circuit Diagram. Scheme 162
DR-12: Flow Chart. Scheme 163
DR-13: Circuit Diagram. Scheme 164
DR-13: Flow Chart. Scheme 165
DR-14: Circuit Diagram & Flow Chart. Scheme 166
DR-15: Flow Chart (1 of 2). Scheme 167
DR-15: Flow Chart (2 of 2). Scheme 168
DR-16: Flow Chart (1 of 2). Scheme 169
DR-16: Flow Chart (2 of 2). Scheme 170
DR-17: Flow Chart (1 of 2). Scheme 171
DR-17: Flow Chart (2 of 2). Scheme 172
DR-18: Circuit Diagram. Scheme 173
DR-18: Flow Chart (1 of 2). Scheme 174
DR-18: Flow Chart (2 of 2). Scheme 175
DR-19: Circuit Diagram. Scheme 176
DR-19: Flow Chart (1 of 2). Scheme 177
DR-19: Flow Chart (2 of 2). Scheme 178
DR-20: Flow Chart. Scheme 179
DR-21: Flow Chart. Scheme 180
DR-22: Flow Chart (1 of 2). Scheme 181
DR-22: Flow Chart (2 of 2). Scheme 182
DR-23: Flow Chart (1 of 2). Scheme 183
DR-23: Flow Chart (2 of 2). Scheme 184
DR-24: Flow Chart. Scheme 185
DR-25: Circuit Diagram & Flow Chart. Scheme 186
DR-26: Circuit Diagram. Scheme 187
DR-26: Flow Chart (Turbo IV). Scheme 188
DR-27: Circuit Diagram. Scheme 189
DR-27: Flow Chart (Turbo IV). Scheme 190
DR-28: Circuit Diagram. Scheme 191
DR-28: Flow Chart. Scheme 192
DR-29: Circuit Diagram (Turbo IV). Scheme 193
DR-29: Flow Chart (Turbo IV) (1 of 2). Scheme 194
DR-29: Flow Chart (Turbo IV) (2 of 2). Scheme 195
DR-30: Flow Chart (1 of 3). Scheme 196
DR-30: Flow Chart (2 of 3). Scheme 197
DR-30: Flow Chart (3 of 3). Scheme 198
DR-31: Circuit Diagram (Turbo IV). Scheme 199
DR-31: Flow Chart (Turbo IV) (1 of 3). Scheme 200
DR-31: Flow Chart (Turbo IV) (2 of 3). Scheme 201
DR-31: Flow Chart (Turbo IV) (3 of 3). Scheme 202
DR-32: Circuit Diagram. Scheme 203
DR-32: Flow Chart (1 of 2). Scheme 204
DR-32: Flow Chart (2 of 2). Scheme 205
DR-33: Flow Chart. Scheme 206
DR-34: Circuit Diagram & Flow Chart (1 of 7). Scheme 207
DR-34: Circuit Diagram (For 2 of 7). Scheme 208
DR-34: Flow Chart (2 of 7). Scheme 209
DR-34: Flow Chart (3 of 7). Scheme 210
DR-34: Circuit Diagram (For 4 of 7). Scheme 211
DR-34: Flow Chart (4 of 7). Scheme 212
DR-34: Circuit Diagram & Flow Chart (5 of 7). Scheme 213
DR-34: Flow Chart (6 of 7). Scheme 214
DR-34: Flow Chart (7 of 7). Scheme 215
DR-35: Flow Chart. Scheme 216
DR-36: Flow Chart (1 of 2). Scheme 217
DR-36: Flow Chart (2 of 2). Scheme 218
DR-37: Flow Chart. Scheme 219
DR-38: Flow Chart. Scheme 220
DR-39: Flow Chart. Scheme 221
DR-40: Flow Chart. Scheme 222
DR-41: Flow Chart. Scheme 223
DR-42: Flow Chart. Scheme 224
DR-43: Flow Chart. Scheme 225
DR-44: Flow Chart. Scheme 226
DR-45: Flow Chart. Scheme 227
DR-46: Flow Chart. Scheme 228
VER-1 Flow Chart. Scheme 229
VER-2: Flow Chart (1 of 2). Scheme 230
VER-2: Flow Chart (2 of 2). Scheme 231
VER-3: Flow Chart (1 of 2). Scheme 232
VER-3: Flow Chart (2 of 2). Scheme 233
See also:
• ALTERNATOR & REGULATOR
• CLEARING CODES
• 13