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Power Source Circuit [08/2013 - ]: Procedure

  1. CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR LH, BLIND SPOT MONITOR SENSOR RH - BATTERY AND BODY GROUND) 
    1. Disconnect the blind spot monitor sensor LH connector.
      GTY458375Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the blind spot monitor sensor RH connector.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      R42-5 (BLB) - Body ground Engine switch on (IG) 11 to 14 V
      R42-5 (BLB) - Body ground Engine switch off Below 1 V
      R43-5 (BRB) - Body ground Engine switch on (IG) 11 to 14 V
      R43-5 (BRB) - Body ground Engine switch off Below 1 V
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      R42-10 (BLGD) - Body ground Always Below 1 Ω
      R43-10 (BRGD) - Body ground Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Blind Spot Monitor Sensor LH)
      *b Front view of wire harness connector
      (to Blind Spot Monitor Sensor RH)

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   2 

  2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [08/2013 - ]