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COMBINATION METER CHASSIS ELECTRICAL 54A-63 CAUTION When the battery cable is disconnected or the COMMENTS ON TROUBLE SYMPTOM If only the speedometer does not operate, the POSSIBLE CAUSES • Damaged harness wires and connectors • Malfunction of engine-ECU <M/T> or engine-A/T-ECU <A/T> • Malfunction of combination meter DIAGNOSTIC PROCEDURE Step 1. MUT-III CAN bus diagnostics Use the MUT-III to diagnose the CAN bus lines. Q: Is the check result satisfactory? YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP − Can Bus Diagnostic Table ). After diagnosing the CAN bus lines, go to Step 5. Step 2. MUT-III other system diagnosis code Check whether the MPI system-related diagnosis Q: Is the diagnosis code set? YES : Diagnose the MPI system (Refer to GROUP 13A, Troubleshooting ). After diagnosing the MPI system, go to Step 5. NO : Go to Step 3. Step 3. MUT-III data list • Item No.82: Vehicle speed sensor malfunction flag (Refer to • Item No.83: Vehicle speed sensor definite flag • Item No.84: Vehicle stopped flag (Refer to .) Q: Is the check result satisfactory? YES : Go to Step 4. NO : Diagnose the MPI system (Refer to GROUP ). After diagnosing the MPI system, go to Step 5. Step 4. Check the speedometer. OK: The speedometer shows that Q: Is the check result satisfactory? YES : Go to Step 5. NO : Replace combination meter, then go to Step Step 5. Retest the system. Check that the speedometer works normally. Q: Is the check result satisfactory? YES : The procedure is complete. NO : Go to Step 1. |