Diagnostic Procedure
NO TCM MESSAGES RECEIVED SYMPTOM CHART
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | With the DRBIII®, Erase DTCs. Cycle the ignition off for at least 1 minute. Turn the ignition on. With the DRBIII® under System Tests, perform the Self Test . With the DRBIII® read DTCs. Does this DTC reset? Yes --> Go To 2 No --> Go To 5 |
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| 2 | Turn the ignition on. With the DRBIII® under Monitors, refer to the Trans Msg Present status under Park Assist BUS INFO. Does the DRBIII® indicate that "Yes" the message is present? Yes --> Replace the Park Assist Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 3 |
All |
| 3 | Turn the ignition on. With the DRBIII®, attempt to establish communication with the TCM. Can the DRBIII establish communication with the TCM? Yes --> Replace the Park Assist Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 4 |
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| 4 | Turn the ignition off. Disconnect the Park Assist Module harness connector. Disconnect the TCM harness connector. Measure the resistance of the PCI Bus circuit between the Park Assist Module harness connector and the TCM harness connector. Is the resistance below 5.0 ohms? Yes --> Replace the Park Assist 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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| 5 | The conditions necessary to set this DTC are not present at this time. Using the wiring diagrams/schematics as a guide, inspect the wiring and connectors. While monitoring the DRBIII® data relative to this circuit, wiggle test the wiring and connectors. Look for the data to change or for the DTC to reset during the wiggle test. Were any problems found? Yes --> Repair as necessary. Perform BODY VERIFICATION TEST - VER 1 . No --> Test Complete. |
All |