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:

If there is not the hand-held tester, begin with STEP 2.

Perform active test.
PREPARATION:
1. Connect the hand-held tester to the DLC3.
2. Turn ignition switch ON and hand-held tester main switch ON.
3. Select the ACTIVE TEST mode on the hand-held tester.
CHECK:

Check that the probe moves as hand-held tester directs in each range.

OK:

The probe operates normally.
1. OK: Proceed to next circuit inspection shown in problem symptoms table (See PROBLEM SYMPTOMS TABLE ).
2. NG: Go to Next Step.
Check speedometer. (See INSPECTION )
1. NG: Replace speedometer.
2. OK: Go to Next Step.
Check circuit plate. (See INSPECTION )
1. NG: Replace circuit plate.
2. OK: Go to next step.
  Check and replace combination meter (See CIRCUIT ).