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Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT FUSE (ACC) 
    1. Disconnect the ACC fuse from the luggage room junction block.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      ACC fuse Always Below 1 Ω

    NG: REPLACE FUSE 

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (AMPLIFIER - BATTERY AND BODY GROUND) 
    1. Disconnect the R34 and R38 amplifier connectors.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      R38-2 (GND) - Body ground Always Below 1 Ω
      R38-6 (GND2) - Body ground
    3. Measure the voltage according to the value(s) in the table below

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Switch Condition Specified Condition
      R38-1 (+B) - Body ground Always 11 to 14 V
      R38-3 (+B2) - Body ground
      R34-12 (ACC) - Body ground Power switch ON (ACC) 11 to 14 V
      Fig 1: Identifying R34 And R38 Connector Terminals
      G05783566Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE  )

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