Inspection Procedure

WARNING: This page is about a different car, the 2005 Lexus GS 430 and 2005 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 headlight control switch using hand-held tester.
PREPARATION:

Connect the hand-held tester to the DLC 3.

CHECK:

Check the headlight control switch using DATA LIST.

OK:

Fig 1: Headlight Control Switch Data List
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1. OK: Proceed to next circuit inspection shown on problem symptoms table (See PROBLEM SYMPTOMS TABLE ).
2. NG: Go to next step.
Check headlight control switch (See INSPECTION ).
1. NG: Replace the headlight control switch.
2. OK: Go to next step.
Check wire harness and connector between headlight control switch and body ECU No. 2.
1. NG: Repair or replace wire harness or connector.
2. OK: Proceed to next circuit inspection shown on problem symptoms table. (See PROBLEM SYMPTOMS TABLE )