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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 119 (Can Communication System (HV) - Circuit Tests (2 Of 9)) >> CAN COMMUNICATION SYSTEM (for HV Model) >> Blind Spot Monitor Sensor Communication Stop Mode [12/2019 - 10/2022] >> Procedure

Blind Spot Monitor Sensor Communication Stop Mode [12/2019 - 10/2022]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR OPEN IN CAN BUS LINES (BLIND SPOT MONITOR SENSOR LH BRANCH LINE) 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the M43 blind spot monitor sensor LH connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      M43-2 (CA1P) - M43-7 (CA1N) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω
      GTY899674Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Blind Spot Monitor Sensor LH)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH) 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      M43-10 (BLGD) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      GTY899672Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Blind Spot Monitor Sensor LH)
    2. Reconnect the cable to the negative (-) auxiliary battery terminal.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      M43-5 (BLB) - Body ground Ignition switch ON 11 to 14 V

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE BLIND SPOT MONITOR SENSOR LH 

    Refer to REMOVAL [12/2019 - 10/2022]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)