Body Control Computer - Tests: Other Jeep Cherokee II рестайлинг

IDENTIFYING VEHICLE EQUIPMENT & SYSTEM PROBLEMS

1. Connect scan tool to Data Link Connector (DLC). DLC is a 16-pin connector located on left side of steering column, above brake pedal. Turn ignition on. If scan tool display is not blank, go to next step. If scan tool display is blank, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article.
2. Using scan tool, select BODY SYSTEM, then BODY COMPUTER. Scan tool will perform a CCD bus test. If scan tool displays BUS OPERATIONAL, go to next step. If scan tool displays NO RESPONSE, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article. If scan tool displays any other message, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article.
3. Using scan tool, select READ DTCs. If any fault messages are displayed, go to «FAULT MESSAGE IDENTIFICATION»(ref-1102-S17731772312000031300000) table to identify which system is affected. Go to applicable test in DIAGNOSTIC TESTS section. If no fault messages are displayed, go to «SYMPTOM TEST DIRECTORY»(ref-1102-S31930475112000031300000) table for list of identified systems. Fault messages or symptoms are diagnosed using a scan tool and/or DVOM. These problems may occur separately or in various combinations. When diagnosing a system with many apparent problems, a sequence of tests may be required. After repairs, ensure problem(s) or failure(s) have been corrected by performing appropriate verification test.

FAULT MESSAGE IDENTIFICATION

SYMPTOM TEST DIRECTORY

CMTC AVERAGE MPH OR FUEL ECONOMY WRONG AND/OR CMTC TRIP ODOMETER INOPERATIVE OR WRONG

Note. Drive vehicle at least 3 miles (greater than 25 MPH) to update CMTC.

1. Turn ignition on. Using scan tool, read engine information under monitor display. If scan tool displays NO RESPONSE, see appropriate VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE, go to next step.
2. Observe TP sensor while depressing accelerator pedal. If TP sensor percent does not increase while operating throttle, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If TP sensor percent does increase, go to next step.
3. Raise and support vehicle. Start vehicle and place transmission in Drive. Using scan tool, read vehicle speed signal. Increase vehicle speed and observe scan tool. If speed signal changes, system is currently operating correctly. If speed signal does not change, vehicle speed signal may be at fault. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE .

CMTC DISTANCE TO EMPTY INOPERATIVE OR WRONG

See ONE GAUGE NOT OPERATING PROPERLY under INSTRUMENT CLUSTER TESTS.

CMTC FAILS TO LIGHT, CMTC ELAPSED TIME INOPERATIVE OR WRONG

Replace CMTC module.

CMTC SHOWS CCD

1. Disconnect CMTC harness connector. Connect jumper wire between ground and terminal No. 11 (White/Black wire) on CMTC module connector. Using scan tool, read CCD bus status. If scan tool displays BUS SHORTED TO GROUND, go to next step. If scan tool does not display BUS SHORTED TO GROUND, repair open White/Black wire.
2. Turn ignition on. Using voltmeter, measure voltage at terminal No. 6 (White/Black wire) on CMTC harness connector. If voltage is 10 volts or less, repair open White/Black wire between CMTC module and fuse No. 9 in junction block. If voltage is greater than 10 volts, go to next step.
3. Connect jumper wire to terminal No. 5 (Violet/Brown wire) on CMTC module connector. Using scan tool, read CCD bus status. If scan tool displays BUS SHORTED TO GROUND, replace CMTC module. If scan tool does not display BUS SHORTED TO GROUND, repair open Violet/Brown wire.

CMTC DISPLAYS OC

1. Disconnect ambient temperature sensor connector. Sensor is located behind front bumper (right center). Connect jumper wire between connector terminals. Turn ignition on. Observe CMTC display. If CMTC displays SC, replace ambient temperature sensor. If CMTC does not display SC, go to next step.
2. Turn ignition off. Disconnect jumper wire. Disconnect CMTC harness connector. Connect jumper wires between ground and each terminal of ambient temperature sensor harness connector. Using ohmmeter, measure resistance between ground and terminal No. 4 (Violet/Light Green wire) on CMTC harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open sensor signal circuit.
3. With jumper wires still connected, measure resistance at terminal No. 10 (Black/Light Blue wire) on CMTC connector. If resistance is less than 5 ohms, replace CMTC module. If resistance is 5 ohms or greater, repair open Black/Light Blue wire.

CMTC DISPLAYS SC

1. Disconnect ambient temperature sensor connector. Sensor is located behind front bumper (right center). Turn ignition on. Observe CMTC display. If CMTC displays OC, replace ambient temperature sensor. If CMTC does not display OC, go to next step.
2. Turn ignition off. Disconnect CMTC harness connector. Using ohmmeter, measure resistance between ground and terminal No. 4 (Violet/Light Green wire) on CMTC harness connector. If resistance is less than 25 ohms, repair sensor signal circuit for short to ground. If resistance is 25 ohms or greater, go to next step.
3. Measure resistance at terminal No. 10 (Black/Light Blue wire) on CMTC connector. If resistance is less than 5 ohms, repair Black/Light Blue wire for short to ground. If resistance is 5 ohms or greater, replace CMTC module.

CMTC SWITCH INOPERATIVE

1. Turn ignition off. Using scan tool, select COMPASS/MINI-TRIP, then INPUT/OUTPUT DISPLAY. If scan tool displays either button PRESSED, replace button assembly module. If scan tool displays either button PRESSED, go to next step.
2. Monitor scan tool display. Press STEP button. If scan tool displays button PRESSED, go to next step. If scan tool does not display button PRESSED, replace button assembly module.
3. Press US/M button. If scan tool displays button PRESSED, test is complete. If scan tool does not display button PRESSED, replace button assembly module.

INCORRECT AMBIENT TEMPERATURE READING

1. Disconnect and remove ambient temperature sensor. Sensor is located behind front bumper, right of center. Using external ohmmeter, measure resistance between sensor terminals and compare with «AMBIENT TEMPERATURE SENSOR SPECIFICATIONS»(ref-1102-S08212483042000031300000) table. If resistance measurement does not correspond with «AMBIENT TEMPERATURE SENSOR SPECIFICATIONS»(ref-1102-S08212483042000031300000) table, replace sensor. If sensor is within specification, go to next step. AMBIENT TEMPERATURE SENSOR SPECIFICATIONS Ambient Temperature k/ohms 32°F (0°C) 29.3-36.0 50°F (10°C) 18.0-22.0 68°F (20°C) 11.4-13.6 77°F (25°C) 9.1-10.8 86°F (30°C) 7.4-8.7 104°F (40°C) 4.9-5.7 122°F (50°C) 3.3-3.8
2. Close all vehicle doors and ensure all lights are off. Wait one minute. Using external ohmmeter, measure resistance between ground and terminal No. 1 (Black/Light Blue wire) on ambient temperature sensor harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, go to 6) .
3. Connect ambient temperature sensor. Disconnect CMTC connector. Using external ohmmeter, measure resistance between terminals No. 4 and No. 10 on CMTC harness connector. Compare with «AMBIENT TEMPERATURE SENSOR SPECIFICATIONS»(ref-1102-S08212483042000031300000) table. If resistance measurement does not correspond with AMBIENT TEMPERATURE SENSOR SPECIFICATIONS table, go to next step. If sensor is within specification, replace CMTC module.
4. Disconnect ambient temperature sensor. Using external ohmmeter, measure resistance between ground and terminal No. 1 (Black/Light Blue wire) on sensor connector. If resistance is less than 500 k/ohms, repair Black/Light Blue wire for partial short to ground. If resistance is 500 k/ohms or greater, go to next step.
5. Move ohmmeter lead to terminal No. 2 (Violet/Light Green wire) on sensor connector. If resistance is less than 500 k/ohms, repair Violet/Light Green wire for partial short to ground. If resistance is 500 k/ohms or greater, repair Violet/Light Green wire for short to Black/Light Blue wire.
6. Using external ohmmeter, measure resistance of Black/Light Blue wire between terminal No. 10 on CMTC harness connector and terminal No. 2 on ambient temperature sensor harness connector. If resistance is less than 5 ohms, replace CMTC. If resistance is 5 ohms or greater, repair open Black/Light Blue wire.

ALL GAUGES NOT OPERATING

1. Turn ignition on. Using scan tool, select ELECTRO/MECH CLUSTER. If scan tool displays BUS OPERATIONAL, go to next step. If scan tool displays any other message, see appropriate VEHICLE COMMUNICATIONS article. If scan tool displays NO RESPONSE , see appropriate VEHICLE COMMUNICATIONS article.
2. Using scan tool, select BODY, then BODY COMPUTER. Select SYSTEM TEST, then PCM MONITOR. If scan tool displays PCM ACTIVE ON THE BUS, go to next step. If scan tool does not display PCM ACTIVE ON THE BUS, see appropriate VEHICLE COMMUNICATIONS article.
3. Disconnect left instrument cluster 10-pin connector C1. Turn ignition on. Using external voltmeter, measure voltage between ground and terminal No. 9 (Pink wire) on instrument cluster harness connector. If voltage is 10 volts or less, repair open Pink wire. If voltage is more than 10 volts, replace instrument cluster.

ANY CCD CLUSTER WARNING LIGHT NOT OPERATING

1. Turn ignition on. Using scan tool, select ELECTRO/MECH CLUSTER. If scan tool displays BUS OPERATIONAL, go to next step. If scan tool displays any other message, see appropriate VEHICLE COMMUNICATIONS article. If scan tool displays NO RESPONSE , see appropriate VEHICLE COMMUNICATIONS article.
2. Using scan tool, select BODY, then BODY COMPUTER. Select SYSTEM TEST, then PCM MONITOR. If scan tool displays PCM ACTIVE ON THE BUS, go to next step. If scan tool does not display PCM ACTIVE ON THE BUS, see appropriate VEHICLE COMMUNICATIONS article.
3. Ensure ignition is off. Push and hold trip odometer reset button. Turn ignition on. Release button. Instrument cluster should enter self-test and actuate all CCD controlled indicator lights. If any indicator light did not illuminate, go to next step. If all indicator lights illuminate, system is functioning correctly.
4. Remove instrument cluster and inspect suspected indicator light bulb. Replace bulb(s) as needed. If bulb(s) is okay, replace instrument cluster.

ANY HARD WIRED WARNING LIGHT NOT OPERATING

1. Remove instrument cluster and inspect suspected indicator light bulb. Replace bulb(s) as needed. If bulb(s) is okay, go to next step.
2. If ABS, 4WD or brake warning lights are not functioning, go to next step. If high beam or turn signal indicator lights are not functioning, go to step 4) .
3. Turn ignition on. Backprobe jumper wire between ground and appropriate terminal on instrument cluster harness connector. See «INSTRUMENT CLUSTER INDICATOR LIGHT TERMINAL IDENTIFICATION»(ref-1102-S15723932232000031300000) table. If suspect indicator light does not illuminate, replace instrument cluster. If indicator light illuminates, inspect applicable circuit between ground and instrument cluster for open. Repair as needed.
4. Turn ignition off. Using ohmmeter, measure resistance between ground and terminal No. 6 (Black/Light Green wire) on instrument cluster left harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open Black/Light Green wire.
5. Backprobe jumper wire between battery voltage source and appropriate terminal on instrument cluster harness connector. See «INSTRUMENT CLUSTER INDICATOR LIGHT TERMINAL IDENTIFICATION»(ref-1102-S15723932232000031300000) table. If suspect indicator light does not illuminate, replace instrument cluster. If indicator light illuminates, inspect applicable circuit between ground and appropriate switch for open. Repair as needed.

INSTRUMENT CLUSTER INDICATOR LIGHT TERMINAL IDENTIFICATION

Scheme 1

1. Using scan tool, read DTCs. If any engine performance related codes are displayed, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If no engine performance related codes are displayed, go to next step.
2. Turn ignition off. Push and hold down trip odometer reset button. Turn ignition on. DO NOT start engine. Release trip odometer reset button. Compare operation of suspect gauge(s) with actuator test chart. (Scheme 1)
3. Instrument cluster will exit self-diagnostics mode at completion of test, or if ignition switch is turned off. If instrument cluster gauge(s) and/or indicator light(s) do not respond properly during actuator test, replace instrument cluster. If all gauges and indicator lights function correctly, system is currently functioning correctly.

ILLUMINATED ENTRY INOPERATIVE

1. Connect scan tool to DLC. Turn ignition on. If scan tool screen is blank, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article.
2. Operate power door locks from door switches. If door locks operate correctly, go to next step. If door locks do not operate correctly, go to KEYLESS ENTRY & POWER DOOR LOCKS article.
3. Using scan tool, select SYSTEM MONITORS, then CCD BUS TEST. If scan tool displays BUS OPERATIONAL, go to next step. If scan tool does not display BUS OPERATIONAL, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article.
4. Ensure ignition is in OFF position. Using RKE transmitter, operate door locks. If door locks operate correctly, go to next step. If door locks do not operate correctly, go to step 7) .
5. Check courtesy light operation by opening and closing doors, and using dash switch. If courtesy lights operate correctly, go to next step. If courtesy lights do not operate, go to ILLUMINATION/INTERIOR LIGHTS article.
6. Ensure ignition is in OFF position. Disconnect RKE module connector. RKE module is mounted in roof or overhead console. Close all doors. Connect jumper wire between ground and terminal No. 1 (Yellow wire) on RKE module harness connector. If courtesy lights illuminate, replace RKE module. If courtesy lights do not illuminate, repair open Yellow wire.
7. Ensure RKE transmitter batteries are fully charged. Replace as needed. Using scan tool, program transmitter. Follow scan tool instructions. Using RKE transmitter, operate door locks. If door locks operate correctly, test is complete. If door locks do not operate correctly, go to next step.
8. Disconnect RKE module connector. RKE module is mounted in roof or overhead console. Using voltmeter, measure voltage between ground and terminal No. 2 (Pink wire) on RKE module harness connector. If voltage is 10 volts or greater, go to next step. If voltage is less than 10 volts, repair open Pink wire.
9. Connect jumper wire between ground and terminal No. 5 (Dark Blue wire) on RKE module harness connector. If door lock motor operates, go to next step. If door lock motor does not operate, go to step 12) .
10. Connect jumper wire between ground and terminal No. 11 (Light Blue/Red wire) on RKE module harness connector. If door lock motor operates, replace RKE module. If door lock motor does not operate, go to next step.
11. Disconnect passenger door module 8-pin harness connector. Connect jumper wire between ground and terminals No. 5 and 11 on RKE module harness connector. Using ohmmeter, measure resistance between ground and terminal No. 2 (Dark Blue/Pink wire) on passenger door module 8-pin harness connector. If resistance is less than 5 ohms, go to step 14) . If resistance is 5 ohms or greater, repair open Dark Blue/Pink wire.
12. Disconnect passenger door module 8-pin harness connector. Connect jumper wire between ground and terminals No. 5 and 11 on RKE module harness connector. Using ohmmeter, measure resistance between ground and terminal No. 2 (Dark Blue/Pink wire) on passenger door module 8-pin harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open Dark Blue/Pink wire.
13. Ensure passenger door module 8-pin harness connector is connected. Connect jumper wire between ground and terminal No. 11 (Light Blue/Red wire) on RKE module harness connector. If door lock motor operates, replace RKE module. If door lock motor does not operate, go to next step.
14. Disconnect passenger door module 8-pin harness connector. Connect jumper wire between ground and terminals No. 5 and 11 on RKE module harness connector. Using ohmmeter, measure resistance between ground and terminal No. 1 (Light Blue/Red wire) on passenger door module 8-pin harness connector. If resistance is less than 5 ohms, replace passenger door module. If resistance is 5 ohms or greater, repair open Light Blue/Red wire.

REMOTE KEYLESS ENTRY INOPERATIVE

1. Connect scan tool to DLC. Turn ignition on. If scan tool screen is blank, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article.
2. Operate power door locks from door switches. If door locks operate correctly, go to next step. If door locks do not operate correctly, go to KEYLESS ENTRY & POWER DOOR LOCKS article.
3. Using scan tool, select SYSTEM MONITORS, then CCD BUS TEST. If scan tool displays BUS OPERATIONAL, go to next step. If scan tool does not display BUS OPERATIONAL, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article.
4. Using scan tool, select THEFT ALARM, then MISCELLANEOUS. Select PROGRAM RKE. Follow scan tool instructions and program all transmitters. Operate door locks using transmitter. If door locks operate properly, test is complete. If door locks do not operate properly, go to next step.
5. Ensure RKE transmitter batteries are fully charged. Replace as needed. Using scan tool, program transmitter. Follow scan tool instructions. Using RKE transmitter, operate door locks. If door locks operate correctly, test is complete. If door locks do not operate correctly, go to next step.
6. Disconnect RKE module connector. RKE module is mounted in roof or overhead console. Using voltmeter, measure voltage between ground and terminal No. 2 (Pink wire) on RKE module harness connector. If voltage is 10 volts or greater, go to next step. If voltage is less than 10 volts, repair open Pink wire.
7. Connect jumper wire between ground and terminal No. 5 (Dark Blue wire) on RKE module harness connector. If door lock motor operates, go to next step. If door lock motor does not operate, go to step 10) .
8. Connect jumper wire between ground and terminal No. 11 (Light Blue/Red wire) on RKE module harness connector. If door lock motor operates, replace RKE module. If door lock motor does not operate, go to next step.
9. Disconnect passenger door module 8-pin harness connector. Connect jumper wire between ground and terminals No. 5 and 11 on RKE module harness connector. Using ohmmeter, measure resistance between ground and terminal No. 2 (Dark Blue/Pink wire) on passenger door module 8-pin harness connector. If resistance is less than 5 ohms, go to step 12) . If resistance is 5 ohms or greater, repair open Dark Blue/Pink wire.
10. Disconnect passenger door module 8-pin harness connector. Connect jumper wire between ground and terminals No. 5 and 11 on RKE module harness connector. Using ohmmeter, measure resistance between ground and terminal No. 2 (Dark Blue/Pink wire) on passenger door module 8-pin harness connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open Dark Blue/Pink wire.
11. Ensure passenger door module 8-pin harness connector is connected. Connect jumper wire between ground and terminal No. 11 (Light Blue/Red wire) on RKE module harness connector. If door lock motor operates, replace RKE module. If door lock motor does not operate, go to next step.
12. Disconnect passenger door module 8-pin harness connector. Connect jumper wire between ground and terminals No. 5 and 11 on RKE module harness connector. Using ohmmeter, measure resistance between ground and terminal No. 1 (Light Blue/Red wire) on passenger door module 8-pin harness connector. If resistance is less than 5 ohms, replace passenger door module. If resistance is 5 ohms or greater, repair open Light Blue/Red wire.

EEPROM FAILURE

Note. Sentry Key Immobilizer System (SKIS) diagnosis may require use of all spare keys.

1. Ensure battery is fully charged. Using scan tool, read and record SKIM DTCs. Erase SKIM DTCs. Turn ignition off, then back to RUN position. After 3 minutes, read SKIM DTCs. If only EEPROM FAILURE fault message is currently displayed or was previously recorded, go to next step. If TRANSPONDER ID or RESPONSE MISMATCH fault message is displayed, go to step 3) . If VIN MISMATCH & ROLLING CODE FAILURE fault message is displayed, test is complete. If VIN MISMATCH fault message is displayed, go to step 8) .
2. If EEPROM FAILURE fault message was previously recorded but did not reset after DTCs were erased, go to next step. If EEPROM FAILURE fault message is currently displayed, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) .
3. If EEPROM FAILURE fault message is not currently displayed with TRANSPONDER ID or RESPONSE MISMATCH fault message, go to next step. If only TRANSPONDER ID or RESPONSE MISMATCH fault messages are currently displayed, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) .
4. Using scan tool, erase SKIM DTCs. Turn ignition off and wait 10 seconds. Start engine 20 times. Using scan tool, read SKIM DTCs. If EEPROM FAILURE and TRANSPONDER ID fault message are displayed, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If only EEPROM FAILURE fault message is currently displayed, go to next step. If only TRANSPONDER ID fault message is currently displayed, go to step 6) . If neither fault message is currently displayed, test is complete.
5. Using scan tool, select THEFT ALARM, then SKIM. Select MISCELLANEOUS, then SKIM KEY TEST. Follow scan tool instructions. Test key in sentry key tester. If key passes, go to next step. If key does not pass, erase SKIM DTCs. Replace and program new key. See «PROGRAMMING BLANK SMART KEY USING SCAN TOOL»(ref-1102-S34739443342000031300000) .
6. Using scan tool, select THEFT ALARM, then SKIM. Select MISCELLANEOUS, then PROGRAM NEW KEY. Read status of current key. If scan tool displays PROGRAMMING SUCCESSFUL, test is complete. If display is PROGRAMMING FAILED, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If display is MAXIMUM KEY LIMIT, no additional keys can be programmed. Perform VERIFICATION TEST: VER-2A If none of the above messages are displayed, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) .
7. Using scan tool, erase SKIM DTCs. Turn ignition off and wait 10 seconds. Start engine 20 times. Using scan tool, read SKIM DTCs. If EEPROM FAILURE fault message is displayed, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If EEPROM FAILURE fault message is not displayed, go to next step.
8. Start engine and allow to idle for 3 minutes. Using scan tool, read DTCs. If VIN MISMATCH fault message is displayed, go to next step. If ROLLING CODE fault message is displayed, go to step 13) . If neither fault message is displayed, test is complete.
9. Using scan tool, read VIN from Powertrain Control Module (PCM). If VIN output from PCM matches VIN on door jamb plate, go to next step. If VIN output from PCM does not match VIN on door jamb plate, replace PCM.
10. Using scan tool, read VIN from SKIM. If VIN output from SKIM matches VIN on door jamb plate, go to next step. If VIN output from SKIM does not match VIN on door jamb plate, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) .
11. Using scan tool, erase VIN MISMATCH DTC. Turn ignition to RUN position and read SKIM DTCs. If VIN MISMATCH fault message is still present, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If VIN MISMATCH fault message is not displayed, go to next step.
12. Start engine and allow to idle for 3 minutes. Using scan tool, erase SKIM DTCs. Read SKIM DTCs. If SKIM MISMATCH fault message is still present, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If SKIM MISMATCH fault message is not displayed, test is complete.
13. Using scan tool, erase SKIM DTCs. Select THEFT ALARM, then SKIM. If scan tool displays NO RESPONSE, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE
14. Using scan tool, select BODY, then BODY COMPUTER. Select SYSTEM TEST, then PCM MONITOR. If scan tool displays PCM ACTIVE ON THE BUS, go to next step. If scan tool does not display PCM ACTIVE ON THE BUS, see appropriate VEHICLE COMMUNICATIONS article.
15. Using scan tool, select ENGINE, then read DTCs. If scan tool displays any PCM related DTCs, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display any PCM related DTCs, replace smart key immobilizer module. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) .

PCM STATUS FAILURE

1. Using scan tool, select ENGINE, then read DTCs. If scan tool displays any PCM related DTCs, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display any PCM related DTCs, go to next step.
2. Ensure battery is fully charged. Using scan tool, read and record SKIM DTCs. Erase SKIM DTCs. Turn ignition off, then back to RUN position. After 3 minutes, read SKIM DTCs. If PCM STATUS FAILURE fault message is currently displayed, go to next step. If PCM STATUS FAILURE fault message is not currently displayed, go to step 6) .
3. Using scan tool, erase SKIM DTCs. Select THEFT ALARM, then SKIM. If scan tool displays NO RESPONSE, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE, go to next step.
4. Using scan tool, select BODY, then BODY COMPUTER. Select SYSTEM TEST, then PCM MONITOR. If scan tool displays PCM ACTIVE ON THE BUS, go to next step. If scan tool does not display PCM ACTIVE ON THE BUS, see appropriate VEHICLE COMMUNICATIONS article.
5. Using scan tool, select ENGINE, then read DTCs. If scan tool displays any PCM related DTCs, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display any PCM related DTCs, replace SKIM. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) .
6. Using scan tool, erase SKIM DTCs. Turn ignition off and wait 10 seconds. Start engine 20 times. Using scan tool, read SKIM DTCs. If any SKIM DTCs are displayed, go to next step. If no fault message are currently displayed, test is complete.
7. Using scan tool, erase SKIM DTCs. Select THEFT ALARM, then SKIM. If scan tool displays NO RESPONSE, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE, go to next step.
8. Using scan tool, select BODY, then BODY COMPUTER. Select SYSTEM TEST, then PCM MONITOR. If scan tool displays PCM ACTIVE ON THE BUS, go to next step. If scan tool does not display PCM ACTIVE ON THE BUS, see appropriate VEHICLE COMMUNICATIONS article.
9. Using scan tool, select ENGINE, then read DTCs. If scan tool displays any PCM related DTCs, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display any PCM related DTCs, replace smart key immobilizer module. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) .

ROLLING CODE FAILURE

1. Using scan tool, select ENGINE, then read DTCs. If scan tool displays any PCM related DTCs, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display any PCM related DTCs, go to next step.
2. Ensure battery is fully charged. Using scan tool, read and record SKIM DTCs. Erase SKIM DTCs. Turn ignition off, then back to RUN position. After 3 minutes, read SKIM DTCs. If only ROLLING CODE FAILURE fault message is currently displayed or was previously recorded, go to next step. If VIN MISMATCH with or without EEPROM FAILURE fault message is displayed, test is complete.
3. Using scan tool, erase SKIM DTCs. Select THEFT ALARM, then SKIM. If scan tool displays NO RESPONSE, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE, go to next step.
4. Using scan tool, select BODY, then BODY COMPUTER. Select SYSTEM TEST, then PCM MONITOR. If scan tool displays PCM ACTIVE ON THE BUS, go to next step. If scan tool does not display PCM ACTIVE ON THE BUS, see appropriate VEHICLE COMMUNICATIONS article.
5. Using scan tool, select ENGINE, then read DTCs. If scan tool displays any PCM related DTCs, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display any PCM related DTCs, replace SKIM. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) .
6. Using scan tool, erase SKIM DTCs. Turn ignition off and wait 10 seconds. Start engine 20 times. Using scan tool, read SKIM DTCs. If any SKIM DTCs are displayed, go to next step. If no fault message are currently displayed, test is complete.
7. Using scan tool, erase SKIM DTCs. Select THEFT ALARM, then SKIM. If scan tool displays NO RESPONSE, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE, go to next step.
8. Using scan tool, select BODY, then BODY COMPUTER. Select SYSTEM TEST, then PCM MONITOR. If scan tool displays PCM ACTIVE ON THE BUS, go to next step. If scan tool does not display PCM ACTIVE ON THE BUS, see appropriate VEHICLE COMMUNICATIONS article.
9. Using scan tool, select ENGINE, then read DTCs. If scan tool displays any PCM related DTCs, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display any PCM related DTCs, replace SKIM. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) .

SERIAL LINK EXTERNAL FAILURE

1. Using scan tool, select ENGINE, then read DTCs. If scan tool displays any PCM related DTCs, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display any PCM related DTCs, go to next step.
2. Ensure battery is fully charged. Using scan tool, read and record SKIM DTCs. Erase SKIM DTCs. Turn ignition off, then back to RUN position. After 3 minutes, read SKIM DTCs. If SERIAL LINK EXTERNAL FAILURE fault message is currently displayed or was previously recorded, go to next step. If SERIAL LINK EXTERNAL FAILURE fault message is not displayed, go to step 7) .
3. Using scan tool, erase SKIM DTCs. Select THEFT ALARM, then SKIM. If scan tool displays NO RESPONSE, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE, go to next step.
4. Using scan tool, select BODY, then BODY COMPUTER. Select SYSTEM TEST, then PCM MONITOR. If scan tool displays PCM ACTIVE ON THE BUS, go to next step. If scan tool does not display PCM ACTIVE ON THE BUS, see appropriate VEHICLE COMMUNICATIONS article.
5. Using scan tool, select ENGINE, then read DTCs. If scan tool displays any PCM related DTCs, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display any PCM related DTCs, replace SKIM. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) .
6. Using scan tool, erase SKIM DTCs. Turn ignition off and wait 10 seconds. Start engine 20 times. Using scan tool, read SKIM DTCs. If any SKIM DTCs are displayed, go to next step. If no fault message are currently displayed, test is complete.
7. Using scan tool, erase SKIM DTCs. Select THEFT ALARM, then SKIM. If scan tool displays NO RESPONSE, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE, go to next step.
8. Using scan tool, select BODY, then BODY COMPUTER. Select SYSTEM TEST, then PCM MONITOR. If scan tool displays PCM ACTIVE ON THE BUS, go to next step. If scan tool does not display PCM ACTIVE ON THE BUS, see appropriate VEHICLE COMMUNICATIONS article.
9. Using scan tool, select ENGINE, then read DTCs. If scan tool displays any PCM related DTCs, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display any PCM related DTCs, replace smart key immobilizer module. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) .

SERIAL LINK EXTERNAL FAILURE - SENDING SECRET KEY TO PCM

1. Using scan tool, select ENGINE, then read DTCs. If scan tool displays any PCM related DTCs, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display any PCM related DTCs, go to next step.
2. Ensure battery is fully charged. Using scan tool, read and record SKIM DTCs. Erase SKIM DTCs. Turn ignition off, then back to RUN position. After 3 minutes, read SKIM DTCs. If SERIAL LINK EXTERNAL FAILURE fault message is currently displayed, go to next step. If SERIAL LINK EXTERNAL FAILURE fault message is not displayed, DTC is not current.
3. Using scan tool, erase SKIM DTCs. Attempt another secret key transfer to PCM. Using scan tool, read DTCs. If SERIAL LINK EXTERNAL fault message is displayed, go to next step. If SERIAL LINK EXTERNAL fault message is not displayed, test is complete.
4. Using scan tool, erase SKIM DTCs. Select THEFT ALARM, then SKIM. If scan tool displays NO RESPONSE, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE, go to next step.
5. Using scan tool, select BODY, then BODY COMPUTER. Select SYSTEM TEST, then PCM MONITOR. If scan tool displays PCM ACTIVE ON THE BUS, go to next step. If scan tool does not display PCM ACTIVE ON THE BUS, see appropriate VEHICLE COMMUNICATIONS article.
6. Using scan tool, select ENGINE, then read DTCs. If scan tool displays any PCM related DTCs, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display any PCM related DTCs, replace SKIM. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) .

TRANSPONDER COMMUNICATION FAILURE

1. Ensure battery is fully charged. Using scan tool, read and record SKIM DTCs. Erase SKIM DTCs. Turn ignition off, then back to RUN position. After 3 minutes, read SKIM DTCs. If TRANSPONDER COMMUNICATION FAILURE fault message is currently displayed or was previously recorded, go to next step. If TRANSPONDER COMMUNICATION FAILURE fault message is not displayed, go to step 3) .
2. Using scan tool, select THEFT ALARM, then SKIM. Select MISCELLANEOUS, then SKIM KEY TEST. Follow scan tool instructions. Test key in sentry key tester. If key passes, replace SKIM. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If key does not pass, erase SKIM DTCs. Replace and program new key. See «PROGRAMMING BLANK SMART KEY USING SCAN TOOL»(ref-1102-S34739443342000031300000) .
3. Start engine several times using each of vehicle's keys. Using scan tool, read SKIM DTCs. If TRANSPONDER fault message is displayed, replace SKIM. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If TRANSPONDER fault message is not displayed, test is complete.

TRANSPONDER CRC FAILURE

1. Ensure battery is fully charged. Using scan tool, read and record SKIM DTCs. Erase SKIM DTCs. Turn ignition off, then back to RUN position. After 3 minutes, read SKIM DTCs. If TRANSPONDER CRC FAILURE fault message is currently displayed or was previously recorded, go to next step. If TRANSPONDER CRC FAILURE fault message is not displayed, go to step 3) .
2. Using scan tool, select THEFT ALARM, then SKIM. Select MISCELLANEOUS, then SKIM KEY TEST. Follow scan tool instructions. Test key in sentry key tester. If key passes, replace SKIM. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If key does not pass, erase SKIM DTCs. Replace and program new key. See «PROGRAMMING BLANK SMART KEY USING SCAN TOOL»(ref-1102-S34739443342000031300000) .
3. Start engine several times using each of vehicle's keys. Using scan tool, read SKIM DTCs. If TRANSPONDER fault message is displayed, replace SKIM. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If TRANSPONDER fault message is not displayed, test is complete.

TRANSPONDER ID MISMATCH/TRANSPONDER RESPONSE MISMATCH

1. Ensure battery is fully charged. Using scan tool, read and record SKIM DTCs. Erase SKIM DTCs. Turn ignition off, then back to RUN position. After 3 minutes, read SKIM DTCs. If only TRANSPONDER ID MISMATCH or TRANSPONDER RESPONSE MISMATCH FAILURE fault message is currently displayed or was previously recorded, go to next step. If EEPROM failure fault message is also displayed, go to step 4) .
2. If TRANSPONDER ID MISMATCH or TRANSPONDER RESPONSE MISMATCH FAILURE fault message are currently displayed, go to 7) . If TRANSPONDER ID MISMATCH or TRANSPONDER RESPONSE MISMATCH FAILURE are previously recorded, but now not currently displayed, go to next step.
3. Start engine several times using each of vehicle's keys. Using scan tool, read SKIM DTCs. If a TRANSPONDER fault message is displayed, replace SKIM. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If no TRANSPONDER fault message is not displayed, test is complete.
4. If TRANSPONDER ID MISMATCH or TRANSPONDER RESPONSE MISMATCH FAILURE fault message are currently displayed, replace SKIM. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If TRANSPONDER ID MISMATCH or TRANSPONDER RESPONSE MISMATCH FAILURE was previously recorded, but now not currently displayed with EEPROM failure, go to next step.
5. Using scan tool, erase SKIM DTCs. Turn ignition off and wait 10 seconds. Start engine 20 times. Using scan tool, read SKIM DTCs. If EEPROM and TRANSPONDER fault messages are displayed, replace SKIM. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If only EEPROM failure is displayed, go to next step. If only TRANSPONDER fault message is displayed, go to step 7) . If neither fault message is displayed, test is complete.
6. Using scan tool, erase SKIM DTCs. Turn ignition off and wait 10 seconds. Start engine 20 times. Using scan tool, read SKIM DTCs. If EEPROM fault message is displayed, replace SKIM. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If EEPROM failure is not displayed, test is complete.
7. Using scan tool, select THEFT ALARM, then SKIM. Select MISCELLANEOUS, then SKIM KEY TEST. Follow scan tool instructions. Test key in sentry key tester. If key passes, go to next step. If key does not pass, erase SKIM DTCs. Replace and program new key. See «PROGRAMMING BLANK SMART KEY USING SCAN TOOL»(ref-1102-S34739443342000031300000) .
8. Using scan tool, select THEFT ALARM, then SKIM. Select MISCELLANEOUS, then PROGRAM NEW KEY. Read status of current key. If scan tool displays PROGRAMMING SUCCESSFUL, test is complete. If display is PROGRAMMING FAILED, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If display is MAXIMUM KEY LIMIT, no additional keys can be programmed. Perform VERIFICATION TEST: VER-2A If none of the above messages are displayed, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) .

VIN MISMATCH

1. Using scan tool, select ENGINE and read DTCs. If EEPROM fault message is present, go to PCM FAILURE EEPROM WRITE DENIED test in appropriate SELF - DIAGNOSTICS article in ENGINE PERFORMANCE. If EEPROM fault message is present, go to next step.
2. Ensure battery is fully charged. Using scan tool, read and record SKIM DTCs. Erase SKIM DTCs. Turn ignition off, then back to RUN position. After 3 minutes, read SKIM DTCs. If only VIN MISMATCH fault message is currently displayed or was previously recorded, go to next step. If EEPROM FAILURE fault message is also displayed, go to step 3) . If ROLLING CODE FAILURE fault message is displayed with or without EEPROM FAILURE fault message is displayed, go to step 4) .
3. Using scan tool, erase SKIM DTCs. Turn ignition off and wait 10 seconds. Start engine 20 times. Using scan tool, read SKIM DTCs. If EEPROM fault message is displayed, replace SKIM. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If EEPROM failure is not displayed, go to next step.
4. Start engine and allow to idle for 3 minutes. Using scan tool, read SKIM DTCs. If VIN MISMATCH fault message is displayed, go to next step. If ROLLING CODE fault message is displayed, go to step 9) . If none of the above fault messages are present, test is complete.
5. Using scan tool, read VIN from Powertrain Control Module (PCM). If VIN output from PCM matches VIN on door jamb plate, go to next step. If VIN output from PCM does not match VIN on door jamb plate, replace PCM.
6. Using scan tool, read VIN from SKIM. If VIN output from SKIM matches VIN on door jamb plate, go to next step. If VIN output from SKIM does not match VIN on door jamb plate, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) .
7. Using scan tool, erase VIN MISMATCH DTC. Turn ignition to RUN position and read SKIM DTCs. If VIN MISMATCH fault message is still present, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If VIN MISMATCH fault message is not displayed, go to next step.
8. Start engine and allow to idle for 3 minutes. Using scan tool, erase SKIM DTCs. Read SKIM DTCs. If SKIM MISMATCH fault message is still present, replace SKIM and perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) . If SKIM MISMATCH fault message is not displayed, test is complete.
9. Using scan tool, erase SKIM DTCs. Select THEFT ALARM, then SKIM. If scan tool displays NO RESPONSE, go to appropriate VEHICLE COMMUNICATIONS test in VEHICLE COMMUNICATIONS article. If scan tool does not display NO RESPONSE
10. Using scan tool, select BODY, then BODY COMPUTER. Select SYSTEM TEST, then PCM MONITOR. If scan tool displays PCM ACTIVE ON THE BUS, go to next step. If scan tool does not display PCM ACTIVE ON THE BUS, see appropriate VEHICLE COMMUNICATIONS article.
11. Using scan tool, select ENGINE, then read DTCs. If scan tool displays any PCM related DTCs, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display any PCM related DTCs, replace smart key immobilizer module. Perform «SKIM INITIALIZATION PROCEDURE»(ref-1102-S14634199572000031300000) .

INITIALIZATION PROCEDURE

1. Obtain vehicle's unique PIN number assigned to it's original SKIM module from vehicle owner or Chrysler's customer center.
2. Using scan tool, select THEFT ALARM, SKIM, then MISCELLANEOUS. Select SKIM MODULE REPLACED function.
3. Enter SECURED ACCESS mode using unique 4 digit PIN number.
4. Program vehicle's VIN number into SKIM's memory.
5. Program country code into SKIM's memory (U.S.).
6. Transfer vehicle's unique Secret Key data from PCM. This process will require SKIM module to be in SECURED ACCESS mode. The PIN number must be entered into scan tool before SKIM will enter SECURED ACCESS mode. Once SECURED ACCESS mode is active, SKIM will remain in that mode for 60 seconds.
7. Program all customer keys into SKIM's memory. This requires that SKIM be in SECURED ACCESS mode. The SKIM will immediately exit SECURED ACCESS mode after each key is programmed.