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Inspection Procedure

  1. CHECK ELECTRIC POWER CONTROL ECU (STSW SIGNAL) 
    1. Disconnect the A69 ECU connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      VOLTAGE SPECIFIED CONDITION

      Tester Connection Switch Condition Specified Condition
      A69-12 (STSW) - Body ground Engine switch on (IG) → cranking Below 1 V → 8 to 14 V

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (PASSENGER SIDE JUNCTION BLOCK - MAIN BODY ECU) 

    Fig 1: Identifying A69 ECU Connector Terminals
    G04945737Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE PASSENGER SIDE JUNCTION BLOCK (ELECTRIC POWER CONTROL ECU)