How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2006 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Step 3, 6, 9:

Diagnostic steps permit the use of the intelligent tester.

VEHICLE BROUGHT TO WORK SHOP
CUSTOMER PROBLEM ANALYSIS
CHECK AND CLEAR DTC
DTC DOES NOT OUTPUT (PROCEED TO "BODY MULTIPLEX COMMUNICATION SYSTEM")

DTC OUTPUTS (GO TO STEP 4)
PROBLEM SYMPTOM CONFIRMATION
SYMPTOM DOES NOT OCCUR (GO TO STEP 5)

SYMPTOM OCCURS (GO TO STEP 6 )
SYMPTOM SIMULATION
DTC CHECK
MALFUNCTION CODE (GO TO STEP 7 )

NORMAL CODE (GO TO STEP 8 )
DTC CHART
GO TO STEP 9
PROBLEM SYMPTOMS TABLE
CIRCUIT INSPECTION
IDENTIFICATION OF PROBLEM
REPAIR OR REPLACE
CONFIRMATION TEST
END