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 WORKSHOP
1. GO TO NEXT STEP
CUSTOMER PROBLEM ANALYSIS CHECK
1. GO TO NEXT STEP
CONNECT HAND-HELD TESTER TO DLC3
HINT:

If the display indicates a communication fault in the tool, inspect DLC3.
1. GO TO NEXT STEP
CHECK DTC AND FREEZE FRAME DATA (See PRE-CHECK )
HINT:

Record or print DTC and freeze frame data, if needed.
1. GO TO NEXT STEP
CLEAR DTC AND FREEZE FRAME DATA (See PRE-CHECK )
1. GO TO NEXT STEP
VISUAL INSPECTION
1. GO TO NEXT STEP
SETTING CHECK (TEST) MODE DIAGNOSIS (See PRE-CHECK )
1. GO TO NEXT STEP

PROBLEM SYMPTOM CONFIRMATION

HINT:

If the engine does not start, perform steps 10 and 12 first.

PROBLEM SYMPTOM CONFIRMATION

A	Malfunction does not occur
B	Malfunction occurs

B: GO TO STEP 10
A: GO TO NEXT STEP

SYMPTOM SIMULATION
1. GO TO NEXT STEP
DTC CHECK (See PRE-CHECK )
DTC CHECK

A Malfunction code

B No code
1. B: GO TO STEP 12
2. A: GO TO NEXT STEP
(See DIAGNOSTIC TROUBLE CODE TABLE )
1. NEXT: GO TO STEP 14

BASIC INSPECTION (See PRE-CHECK )

BASIC INSPECTION

A	Wrong parts not confirmed
B	Wrong parts confirmed

B: GO TO STEP 17

(See PROBLEM SYMPTOMS TABLE )

PROBLEM SYMPTOMS

A	Wrong circuit confirmed
B	Wrong parts confirmed

B: GO TO STEP 17 17
A: GO TO NEXT STEP

CHECK ECM POWER SOURCE CIRCUIT
1. GO TO NEXT STEP

CIRCUIT INSPECTION

CHECK ECM POWER SOURCE

A	Malfunction not confirmed
B	Malfunction confirmed

B: GO TO STEP 18
A: GO TO NEXT STEP

CHECK FOR INTERMITTENT PROBLEMS (See PRE-CHECK )
1. NEXT: GO TO STEP 18
PARTS INSPECTION
1. GO TO NEXT STEP
IDENTIFICATION OF PROBLEM
1. GO TO NEXT STEP
ADJUSTMENT, REPAIR
1. GO TO NEXT STEP
CONFIRMATION TEST
1. GO TO NEXT STEP
2. END

A	Malfunction code
B	No code