Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus GS 430 and 2004 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

In case of using the hand-held tester, start the inspection from step 1 and in case of not using the hand-held tester, start from step 2.

Check stop light switch using hand-held tester.
PREPARATION:

Connect the hand-held tester to the DLC 3.

CHECK:

Check the stop light switch using DATA LIST.
1. OK: Proceed to next circuit inspection shown on problem symptoms table. (See PROBLEM SYMPTOMS TABLE )
2. NG: Go to Next Step
Check stop light switch. (See INSPECTION )
1. NG: Replace the stop light switch.
2. OK: Go to Next Step
Check wire harness and connector between stop light switch and Body ECU No. 2, battery and stop light switch.
1. NG: Repair or replace wire harness or connector.
2. OK: Go to next step.
  Proceed to next circuit inspection shown on problem symptoms table. (See PROBLEM SYMPTOMS TABLE )