Diagnostic Procedure
DIAGNOSTIC INFORMATION AND PROCEDURES - COMPASS FAILURE
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | With the DRBIII®, verify that no PCM communication failures are present in the CMTC. Is there a PCM communication failure present? Yes --> Refer to PCM MEASSAGE NOT RECEIVED before proceeding. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 2 |
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| 2 | Perform the Compass/Mini-Trip Computer Self Test . Turn the ignition off. Press and hold the Step and the Compass/Temp buttons. Turn the ignition on.
NOTE:
The Compass/Mini-Trip Computer Self Test can also be initiated using the DRBIII®. During the Self Test the Compass/Mini-Trip Computer will perform the following checks: Illuminate all VF display segments Check the CMTC memory, Communications, and Compass internal Check the CMTC/UGDO communications (if equipped) Display Pass, Fail, Bus, Bus 1, or Bus 2 when complete. Did the Compass Mini-Trip Computer display "Fail"? Yes --> Replace the Compass/Mini-Trip Computer in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 3 |
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| 3 | Move the vehicle to an area away from any large metal objects or overhead power lines. Attempt to calibrate the compass. Turn the ignition on. Press and hold the STEP and US/M buttons at the same time until the CAL indicator begins to flash then release. Drive the vehicle in 3 complete 360 degree circles, at less than 5 MPH (8 KPH). The CAL indicator should turn off. Did the CAL indicator turn OFF? Yes --> Test Complete. No --> Replace the Compass/Mini-Trip Computer in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 . |
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