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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 the stop light using ACTIVE TEST.

    Luggage Room J/B ECU: 

    LUGGAGE ROOM J/B ECU INSPECTION

    Description Tester display Check condition
    Stop light STOP 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. CHECK HARNESS AND CONNECTOR 
    1. Check for open and short circuit in harness and connector between terminal STP1 of luggage room J/B ECU and rear combination light.
    2. Check for open and short circuit in harness and connector between rear combination light and body ground.
    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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