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Home >> Lexus >> 2011 >> GS 350 RWD >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Luggage Compartment Door Opener System (Diagnostics & Circuit Tests) >> Luggage Compartment Door Opener System >> Circuit Tests >> Passenger Side Junction Block ECU Power Source Circuit >> Procedure

Passenger Side Junction Block ECU Power Source Circuit: Procedure

  1. INSPECT FUSE (MPX-B, D/C CUT) 
    1. Remove the MPX-B and D/C CUT fuses from the engine room No. 1 relay block.
    2. Measure the resistance of the fuses.

      Standard resistance

      Below 1 Ω

    NG → REPLACE FUSE 

    OK: Go to next step 

  2. CHECK WIRE HARNESS (COWL SIDE JUNCTION BLOCK RH - BATTERY AND BODY GROUND) 
    Fig 1: Identifying DK And DD Junction Block Connectors
    GTY100304Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the DK and DD junction block connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.

      Standard voltage

      Tester Connection Specified Condition
      DK-5 (BECU) - Body ground 10 to 14 V

      Standard resistance

      Tester Connection Specified Condition
      DD-7 (GND2) - Body ground Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE 

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