Inspection Procedure

WARNING: This page is about a different car, the 2003 Lexus LX 470. 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 light control switch using hand-held tester.
PREPARATION:

Connect the hand-held tester to DLC 3.

CHECK:

Check that the light control switch operate in DATA LIST (See PRE-CHECK ).
1. OK : Proceed to next circuit inspection shown on problem symptoms table (See PROBLEM SYMPTOMS TABLE ).
2. NG : Go to next step
Check light control switch (See INSPECTION ).
1. NG : Replace the headlight control switch.
2. OK : GO TO NEXT STEP
Check wire harness and connector between light control switch and Body ECU (Main) (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
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 ).