Diagnostic Procedure
WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE - BUS MESSAGES MISSING
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 |
NOTE:
The EVIC self test can performed manually or by using the DRBIII®. Turn the ignition off.Perform the EVIC self test .Depress and hold the RESET and C/T (EVIC) buttons while turning the ignition on.Does the EVIC display "PASSED SELF TEST"?Yes --> Go To 2No --> Go To 4 |
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| 2 | Turn the ignition on. With the DRBIII®, select Body Computer, System Tests, then PCM Monitor. Does the DRBIII® display "PCM Active on the Bus"? Yes --> Go To 3 No --> Refer to COMMUNICATION for the related symptom(s). Perform BODY VERIFICATION TEST - VER 1 . |
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| 3 | Turn the ignition on. With the DRBIII®, attempt to I/D or communicate with the BCM. Was the DRBIII® able to I/D or communicate with the BCM? Yes --> Replace the EVIC in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 . No --> Refer to COMMUNICATION for the related symptom(s). Perform BODY VERIFICATION TEST - VER 1 . |
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| 4 | Turn the ignition off. Perform the EVIC self test . Press and hold the RESET and C/T buttons. Turn the ignition on. Does the EVIC display "BUS"? Yes --> Refer to symptom *NO RESPONSE FROM COMPASS in the Communication category. Perform BODY VERIFICATION TEST - VER 1 . No --> The condition is not present at this time. Monitor DRBIII® parameters while wiggling the related wire harness. Refer to any Technical Service Bulletins that may apply. Visually inspect the related wiring harness and connector terminals. Perform BODY VERIFICATION TEST - VER 1 . |
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