How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.

VEHICLE BROUGHT TO WORK SHOP
CUSTOMER PROBLEM ANALYSIS CHECK
CHECK AND CLEAR DTC (See PRE-CHECK )
1. DTC DOES NOT OUTPUT (PROCEED TO "BODY MULTIPLEX COMMUNICATION SYSTEM")
2. DTC OUTPUTS (GO TO STEP 4 )
PROBLEM SYMPTOM CONFIRMATION
1. SYMPTOM DOES NOT OCCUR (GO TO STEP 5 )
2. SYMPTOM OCCURS (GO TO STEP 6 )
SYMPTOM SIMULATION (See HOW TO PROCEED WITH TROUBLESHOOTING )
DTC CHECK (See PRE-CHECK )
1. MALFUNCTION CODE (GO TO STEP 7 )
2. NORMAL CODE (GO TO STEP 8 )
(See DIAGNOSTIC TROUBLE CODE TABLE )
1. GO TO STEP 9
(See PROBLEM SYMPTOMS TABLE )
CIRCUIT INSPECTION (See DTC P0500/21 VEHICLE SPEED SENSOR "A", DTC P0503/23 VEHICLE SPEED SENSOR "A" INTERMITTENT/ERRATIC/HIGH - DIAGNOSIS CIRCUIT )
IDENTIFICATION OF PROBLEM
REPAIR OR REPLACE
CONFIRMATION TEST
1. Go to END

HINT:

Step 3, 6, 9, 12:

Diagnostic steps permit the use of the hand-held tester.