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 - PCM MESSAGE NOT RECEIVED
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | Turn the ignition on. With the DRB enter System Tests then PCM Monitor. Does the DRB display: PCM is active on BUS? Yes --> With the DRB, erase ITM DTCs. Cycle the ignition switch, wait 1 minute then recheck for ITM DTCs. If DTC resets, replace the Intrusion Transceiver Module in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 2 |
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| 2 | Turn the ignition on. With the DRB, attempt to communicate with the PCM. Was the DRB able to communicate with the PCM? Yes --> Go To 3 No --> Refer to the COMMUNICATION CATEGORY and perform the appropriate symptom. Perform BODY VERIFICATION TEST - VER 1 . |
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| 3 | Turn the ignition off. Disconnect the PCM C3 harness connector. Disconnect the DRBIII® from the Data Link connector. Measure the resistance of the PCI Bus circuit between the Data Link connector and the PCM connector. Is the resistance below 5.0 ohms? Yes --> Replace the Powertrain Control Module in accordance with the service information. Perform BODY VERIFICATION TEST - VER 1 . No --> Repair the PCI Bus circuit for an open. Perform BODY VERIFICATION TEST - VER 1 . |
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