How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2004 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Troubleshoot in accordance with the procedure on the following pages.

VEHICLE BROUGHT TO WORKSHOP
SYMPTOM CHECK
INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)
1. Check that there is no abnormality in the communication system by inspecting the communication function of the multiplex communication system with the hand-held tester.
  1. (ECU unconnected, communication line abnormal) Without code output, proceed to A.
  2. (ECU unconnected, communication line abnormal) With code output, proceed to B.
1. B: GO TO MULTIPLEX COMMUNICATION SECTION
2. A: GO TO NEXT STEP.
DIAGNOSIS CODE CHECK (See DIAGNOSTIC TROUBLE CODE CHART )
1. Check diagnosis code.
  1. Without code output, proceed to A.
  2. With code output, proceed to B.
1. B: GO TO PTC CHART (See DIAGNOSTIC TROUBLE CODE CHART )
2. A: GO TO NEXT STEP.
PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
1. Without applicable symptoms, proceed to A.
2. With applicable symptoms, proceed to B.
1. B: GO TO SYMPTOMS TABLE
2. A: GO TO NEXT STEP.
PERFORM TROUBLESHOOTING IN THE FOLLOWING METHOD, DEPENDING 0 MALFUNCTION SYMPTOM
1. Pre-inspection (See PRE-CHECK )
  1. Inspection with the hand-held tester (ECU DATA MONITOR)
2. ECU terminal position
ADJUSTMENT, REPAIR OR REPLACEMENT
END