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Home >> Lexus >> 2009 >> LS 460L AWD >> Repair and Diagnosis >> Electrical >> Gauges >> Clock & Power Outlets >> CLOCK SYSTEM (w/ Multi-display) >> Clock Power Source Circuit >> Inspection Procedure

Inspection Procedure

  1. INSPECT FUSE (P-ACC, DOME) 
    1. Disconnect the DOME fuse from the main body ECU.
    2. Disconnect the P-ACC fuse from the passenger side junction block.
    3. Measure the resistance of the fuses.

      Standard resistance 

      RESISTANCE SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      ACC fuse Always Below 1 Ω
      DOME fuse Always Below 1 Ω

      NG: REPLACE FUSE 

      OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (CLOCK - BATTERY AND BODY GROUND) 
    1. Disconnect the L38 clock connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      L38-7 (E) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      VOLTAGE SPECIFIED CONDITION

      Tester Connection Switch Condition Specified Condition
      L38-4 (ACC) - Body ground Engine switch on (ACC) 11 to 14 V
      L38-8 (+B) - Body ground Always 11 to 14 V
      Fig 1: Identifying L38 Clock Connector Terminals
      G04945883Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: REPLACE CLOCK ASSEMBLY (See  REMOVAL   ) 

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