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 |
|---|---|
| Acclaim, Spirit | AA |
| Dynasty | AC |
| Daytona | AG |
| LeBaron Convertible & LeBaron Coupe | AJ |
| 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
SYSTEM DIAGNOSIS
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 234
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 235)through see scheme 10.
- Check Light Green wire of diagnostic connector for continuity to SBEC 60-pin connector cavity No. 45. (Scheme 235)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
| 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 detected with 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 detected from 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. | |
| 25 | AIS Motor Circuits | Shorted condition detected in one or more Auto Idle Speed control circuits. | |
| 31 | Purge Solenoid Ckt | Open or shorted condition is detected in 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 (Except "C" Body) | Open or shorted condition detected in A/C clutch relay circuit. | |
| 33 | A/C Clutch Relay Ckt ("C" Body) | 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 (Except "C" Body) | Open or shorted condition detected vacuum or vent solenoid circuits. | |
| 35 | Radiator Fan Relay ("C" Body) | Open or shorted condition detected vacuum or vent solenoid circuits. | |
| 37 | PTU Solenoid Circuit | Open or shorted condition detected in torque converter part throttle unlock solenoid circuit. | |
| 41 | Alternator Field Ckt | Open or shorted condition | |
| 42 | ASD Relay Circuit | Open or shorted condition detected in alternator field circuit.detected in ASD relay circuit. | |
| 43 | Ignition Coil #1 Circuit | Output Driver For Ignition Coil Does Not Respond Properly To The Dwell Control Signal. | |
| 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 51 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. | |
| 55 | (2) | Completion of fault code display by check engine light. | |
| 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) No display on DRB-II. | |||
| (1) | Single-point fuel injection. |
| (2) | No display on 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 detected with 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 detected from 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. | |
| 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 solenoid circuit. | |
| 32 | EGR Solenoid Circuit (With California Emissions Only) | Open or shorted condition is detected in EGR solenoid circuit (CA only). | |
| 32 | EGR System Failure (With California Emissions Only) | 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 vacuum or vent solenoid circuits. | |
| 36 | Wastegate Solenoid | Open or shorted condition detected in turbocharger wastegate control solenoid circuit. | |
| 37 | PTU Solenoid Circuit | Open or shorted condition detected in torque converter part throttle unlock solenoid circuit. | |
| 41 | Alternator Field Ckt | Open or shorted condition | |
| 42 | (1) Z1 Voltage Sense | No battery voltage sensed when ASD relay is energized. | |
| 45 (1) | 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 51 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 (1) | Sync Pick-Up Signal | No high data rate detected during engine rotation. | |
| 55 | (2) | Completion of fault code display by check engine light. | |
| 61 (1) | 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) Multi-point fuel injection. (2) No display on DRB-II. | |||
| (1) | Multi-point fuel injection. |
| (2) | No display on DRB-II. |
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 235
Scheme 236
Scheme 237
Scheme 238
Scheme 239
Scheme 240
CODE CHARTS FOR 2.5L 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.
NS1: Circuit Diagram. Scheme 241
NS1: Flow Chart (1 of 3). Scheme 242
NS1: Flow Chart (2 of 3). Scheme 243
NS1: Flow Chart (3 of 3). Scheme 244
NS2: Flow Chart. Scheme 245
NS3: Flow Chart. Scheme 246
NS4: Circuit Diagram & Flow Chart (1 of 2). Scheme 247
NS4: Flow Chart (2 of 2). Scheme 248
NS5: Flow Chart. Scheme 249
NS6: CHECK FUEL FILTER, FUEL PUMP, PRESSURE REGULATOR
& POWER TO FUEL PUMP
NS6: Circuit Diagram. Scheme 250
NS6: Flow Chart (1 of 2). Scheme 251
NS6: Flow Chart (2 of 2). Scheme 252
NS7: CHECK FOR FLOODING FUEL INJ., KINKED FUEL LINES
& PRESSURE REG. OPERATION
NS7: Flow Chart (1 of 2). Scheme 253
NS7: Flow Chart (2 of 2). Scheme 254
NS8: Circuit Diagram & Flow Chart. Scheme 255
NS9: Circuit Diagram & Flow Chart (1 of 2). Scheme 256
NS9: Circuit Diagram & Flow Chart (2 of 2). Scheme 257
NS10: Circuit Diagram & Flow Chart (1 of 2). Scheme 258
NS10: Circuit Diagram & Flow Chart (2 of 2). Scheme 259
NS11: Flow Chart. Scheme 260
NS12: CHECK FOR SYSTEM PWR & GND, OPERATION OF MAP
SENSOR & ENGINE CONTROLLER
NS12: Circuit Diagram. Scheme 261
NS12: Flow Chart (1 of 2). Scheme 262
NS12: Flow Chart (2 of 2). Scheme 263
NS13: Circuit Diagram. Scheme 264
NS13: Flow Chart (1 of 3). Scheme 265
NS13: Flow Chart (2 of 3). Scheme 266
NS13: Flow Chart (3 of 3). Scheme 267
NS14: Flow Chart. Scheme 268
NS15: CHECKING ASD RELAY, POWER FEED TO FUEL PUMP
O2 SENSOR & INJECTORS
NS15: Flow Chart (1 of 2). Scheme 269
NS15: Flow Chart (2 of 2). Scheme 270
DR1: Flow Chart (1 of 5). Scheme 271
DR1: Flow Chart (2 of 5). Scheme 272
DR1: Flow Chart (3 of 5). Scheme 273
DR1: Flow Chart (4 of 5). Scheme 274
DR1: Flow Chart (5 of 5). Scheme 275
DR2: Circuit Diagram & Flow Chart. Scheme 276
DR3: Flow Chart. Scheme 277
DR4: Flow Chart. Scheme 278
DR5: Circuit Diagram & Flow Chart. Scheme 279
DR6: Circuit Diagram. Scheme 280
DR6: Circuit Diagram & Flow Chart. Scheme 281
DR7: Circuit Diagram & Flow Chart. Scheme 282
DR8: Circuit Diagram. Scheme 283
DR8: Flow Chart. Scheme 284
DR9: Circuit Diagram & Flow Chart. Scheme 285
DR10: Circuit Diagram & Flow Chart. Scheme 286
DR11: Circuit Diagram & Flow Chart. Scheme 287
DR12: Circuit Diagram. Scheme 288
DR12: Flow Chart. Scheme 289
DR13: Circuit Diagram. Scheme 290
DR13: Flow Chart. Scheme 291
DR14: Flow Chart. Scheme 292
DR15: Circuit Diagram. Scheme 293
DR15: Flow Chart (1 of 2). Scheme 294
DR15: Flow Chart (2 of 2). Scheme 295
DR16: Circuit Diagram. Scheme 296
DR16: Flow Chart. Scheme 297
DR17: Circuit Diagram. Scheme 298
DR17: Flow Chart. Scheme 299
DR18: Flow Chart (1 of 2). Scheme 300
DR18: Flow Chart (2 of 2). Scheme 301
DR19: Circuit Diagram. Scheme 302
DR19: Flow Chart (1 of 2). Scheme 303
DR19: Flow Chart (2 of 2). Scheme 304
DR20: Circuit Diagram. Scheme 305
DR20: Flow Chart (C Body). Scheme 306
DR21: Circuit Diagram. Scheme 307
DR21: Flow Chart (1 of 2). Scheme 308
DR21: Flow Chart (2 of 2). Scheme 309
DR22: Flow Chart (C Body). Scheme 310
DR23: Circuit Diagram. Scheme 311
DR23: Flow Chart. Scheme 312
DR24: Flow Chart. Scheme 313
DR25: Circuit Diagram (For 1 of 6). Scheme 314
DR25: Flow Chart (1 of 6). Scheme 315
DR25: Circuit Diagram (For 2 of 6). Scheme 316
DR25: Flow Chart (2 of 6). Scheme 317
DR25: Flow Chart (3 of 6). Scheme 318
DR25: Flow Chart (4 of 6). Scheme 319
DR25: Flow Chart (5 of 6). Scheme 320
DR25: Flow Chart (6 of 6). Scheme 321
DR26: Flow Chart (1 of 2). Scheme 322
DR26: Flow Chart (2 of 2). Scheme 323
DR27: Flow Chart. Scheme 324
DR28: Flow Chart (1 of 3). Scheme 325
DR28: Flow Chart (2 of 3). Scheme 326
DR28: Flow Chart (3 of 3). Scheme 327
DR29: Flow Chart. Scheme 328
DR30: Flow Chart. Scheme 329
DR31: Flow Chart. Scheme 330
DR32: Flow Chart (1 of 2 ). Scheme 331
DR32: Flow Chart (2 of 2). Scheme 332
DR33: Flow Chart. Scheme 333
DR34: Flow Chart. Scheme 334
DR35: Flow Chart. Scheme 335
DR36: Flow Chart. Scheme 336
DR37: Flow Chart. Scheme 337
DR38: Flow Chart. Scheme 338
VER1: Flow Chart Verification Procedure 1. Scheme 339
VER2: Flow Chart Verification Procedure 2 (1 of 2). Scheme 340
VER2: Flow Chart Verification Procedure 2 (2 of 2). Scheme 341
VER3: Flow Chart Verification Procedure 3 (1 of 2). Scheme 342
VER3: Flow Chart Verification Procedure 3 (2 of 2). Scheme 343
NS1: Flow Chart (1 of 3). Scheme 344
NS1: Flow Chart (2 of 3). Scheme 345
NS1: Flow Chart (3 of 3). Scheme 346
NS2: Flow Chart (1 of 2). Scheme 347
NS2: Flow Chart (2 of 2). Scheme 348
NS3: Flow Chart (1 of 2). Scheme 349
NS3: Circuit Diagram & Flow Chart (2 of 2). Scheme 350
NS4: Flow Chart. Scheme 351
NS5: CHECK FOR FUEL FILTER, FUEL PUMP
PRESSURE REGULATOR & POWER TO FUEL PUMP
NS5: Circuit Diagram. Scheme 352
NS5: Flow Chart (1 of 2). Scheme 353
NS5: Circuit Diagram & Flow Chart (2 of 2). Scheme 354
NS6: CHECK FOR HIGH FUEL PRESSURE AT PRESSURE
REGULATOR & FUEL TANK
NS6: Flow Chart. Scheme 355
NS7: Circuit Diagram. Scheme 356
NS7: Flow Chart (1 of 2). Scheme 357
NS7: Flow Chart (2 of 2). Scheme 358
NS8: Flow Chart (1 of 2). Scheme 359
NS8: Flow Chart (2 of 2). Scheme 360
NS9: CHECK FOR SYSTEM PWR & GND, OPERATION OF MAP
SENSOR & ENG CONTROLLER
NS9: Circuit Diagram. Scheme 361
NS9: Flow Chart (1 of 2). Scheme 362
NS9: Flow Chart (2 of 2). Scheme 363
NS10: Circuit Diagram & Flow Chart (1 of 2). Scheme 364
NS10: Circuit Diagram & Flow Chart (2 of 2). Scheme 365
NS11: Flow Chart. Scheme 366
NS12: Flow Chart (1 of 2). Scheme 367
NS12: Flow Chart (2 of 2). Scheme 368
NS13: Circuit Diagram & Flow Chart (1 of 2). Scheme 369
NS13: Circuit Diagram & Flow Chart (2 of 2). Scheme 370
DR1: Flow Chart (1 of 5). Scheme 371
DR1: Flow Chart (2 of 5). Scheme 372
DR1: Flow Chart (3 of 5). Scheme 373
DR1: Flow Chart (4 of 5). Scheme 374
DR1: Flow Chart (5 of 5). Scheme 375
DR2: Circuit Diagram. Scheme 376
DR2: Flow Chart. Scheme 377
DR3: Flow Chart. Scheme 378
DR4: Circuit Diagram & Flow Chart. Scheme 379
DR5: Flow Chart. Scheme 380
DR6: Circuit Diagram. Scheme 381
DR6: Flow Chart. Scheme 382
DR7: Circuit Diagram. Scheme 383
DR7: Flow Chart. Scheme 384
DR8: Circuit Diagram & Flow Chart. Scheme 385
DR9: Circuit Diagram & Flow Chart. Scheme 386
DR10: Circuit Diagram. Scheme 387
DR10: Flow Chart. Scheme 388
DR11: Circuit Diagram & Flow Chart. Scheme 389
DR12: Circuit Diagram. Scheme 390
DR12: Flow Chart. Scheme 391
DR13: Circuit Diagram. Scheme 392
DR13: Flow Chart. Scheme 393
DR14: Circuit Diagram & Flow Chart. Scheme 394
DR15: Flow Chart (1 of 2). Scheme 395
DR15: Flow Chart (2 of 2). Scheme 396
DR16: Flow Chart (1 of 2). Scheme 397
DR16: Flow Chart (2 of 2). Scheme 398
DR17: Flow Chart (1 of 2). Scheme 399
DR17: Flow Chart (2 of 2). Scheme 400
DR18: Circuit Diagram. Scheme 401
DR18: Flow Chart (1 of 2). Scheme 402
DR18: Flow Chart (2 of 2). Scheme 403
DR19: Circuit Diagram. Scheme 404
DR19: Flow Chart (1 of 2). Scheme 405
DR19: Flow Chart (2 of 2). Scheme 406
DR20: Flow Chart. Scheme 407
DR21: Flow Chart. Scheme 408
DR22: Flow Chart (1 of 2). Scheme 409
DR22: Flow Chart (2 of 2). Scheme 410
DR23: Flow Chart (1 of 2). Scheme 411
DR23: Flow Chart (2 of 2). Scheme 412
DR24: Flow Chart. Scheme 413
DR25: Circuit Diagram & Flow Chart. Scheme 414
DR26: Circuit Diagram. Scheme 415
DR26: Flow Chart (Turbo IV). Scheme 416
DR27: Circuit Diagram. Scheme 417
DR27: Flow Chart (Turbo IV). Scheme 418
DR28: Circuit Diagram. Scheme 419
DR28: Flow Chart. Scheme 420
DR29: Circuit Diagram (Turbo IV). Scheme 421
DR29: Flow Chart (Turbo IV) (1 of 2). Scheme 422
DR29: Flow Chart (Turbo IV) (2 of 2). Scheme 423
DR30: Flow Chart (1 of 3). Scheme 424
DR30: Flow Chart (2 of 3). Scheme 425
DR30: Flow Chart (3 of 3). Scheme 426
DR31: Circuit Diagram (Turbo IV). Scheme 427
DR31: Flow Chart (Turbo IV) (1 of 3). Scheme 428
DR31: Flow Chart (Turbo IV) (2 of 3). Scheme 429
DR31: Flow Chart (Turbo IV) (3 of 3). Scheme 430
DR32: Circuit Diagram. Scheme 431
DR32: Flow Chart (1 of 2). Scheme 432
DR32: Flow Chart (2 of 2). Scheme 433
DR33: Flow Chart. Scheme 434
DR34: Circuit Diagram & Flow Chart (1 of 7). Scheme 435
DR34: Circuit Diagram (For 2 of 7). Scheme 436
DR34: Flow Chart (2 of 7). Scheme 437
DR34: Flow Chart (3 of 7). Scheme 438
DR34: Circuit Diagram (For 4 of 7). Scheme 439
DR34: Flow Chart (4 of 7). Scheme 440
DR34: Circuit Diagram & Flow Chart (5 of 7). Scheme 441
DR34: Flow Chart (6 of 7). Scheme 442
DR34: Flow Chart (7 of 7). Scheme 443
DR35: Flow Chart. Scheme 444
DR36: Flow Chart (1 of 2). Scheme 445
DR36: Flow Chart (2 of 2). Scheme 446
DR37: Flow Chart. Scheme 447
DR38: Flow Chart. Scheme 448
DR39: Flow Chart. Scheme 449
DR40: Flow Chart. Scheme 450
DR41: Flow Chart. Scheme 451
DR42: Flow Chart. Scheme 452
DR43: Flow Chart. Scheme 453
DR44: Flow Chart. Scheme 454
DR45: Flow Chart. Scheme 455
DR46: Flow Chart. Scheme 456
VER1 Flow Chart. Scheme 457
VER2: Flow Chart (1 of 2). Scheme 458
VER2: Flow Chart (2 of 2). Scheme 459
VER3: Flow Chart (1 of 2). Scheme 460
VER3: Flow Chart (2 of 2). Scheme 461
See also:
• 13