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Inspection Procedure

WARNING: This page is about a different car, the 2002 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. DO ACTIVE TEST OF OBD II SCAN TOOL OR LEXUS HAND-HELD TESTER 
    1. Connect the LEXUS hand-held tester to the DLC3.
    2. Check that the illumination can light in an ACTIVE TEST.

    Driver Side J/B ECU: 

    DRIVER SIDE J/B ECU INSPECTION

    Description (Symbols) Tester display Check condition
    Illumination signal output ILLUMI OUTPUT ON - OFF

    Passenger Side J/B ECU: 

    PASSENGER SIDE J/B ECU INSPECTION

    Description (Symbols) Tester display Check condition
    Front room light
    (Front step light)    		 F ROOM LIGHT ON - OFF
    1. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOM TABLE, SEE  PROBLEM SYMPTOMS TABLE  . 
    2. NG: GO TO NEXT STEP. 
  2. INSPECT INTERIOR LIGHT, see  INSPECTION  . 
    1. NG: REPLACE INTERIOR LIGHT 
    2. OK: GO TO NEXT STEP. 
  3. CHECK HARNESS AND CONNECTOR 
    1. Inspect the harness and connectors related to each light, referring to the wiring diagram.
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOM TABLE, SEE  PROBLEM SYMPTOMS TABLE  . 
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