BLIND SPOT MONITOR SYSTEM Power Source Circuit

DESCRIPTION

This circuit provides power to operate the blind spot monitor sensor.

WIRING DIAGRAM

A01MGA7E39

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR LH, BLIND SPOT MONITOR SENSOR RH - BATTERY AND BODY GROUND)


    1. A01MGQ9C07
      *a

      Front view of wire harness connector

      (to Blind Spot Monitor Sensor RH)
      *b

      Front view of wire harness connector

      (to Blind Spot Monitor Sensor LH)

      Disconnect the blind spot monitor sensor LH connector.

    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
      P31-5 (BLB) - Body ground Power switch on (IG) 11 to 14 V
      P31-5 (BLB) - Body ground Power switch off Below 1 V
      Q20-5 (BRB) - Body ground Power switch on (IG) 11 to 14 V
      Q20-5 (BRB) - Body ground Power 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
      P31-10 (BLGD) - Body ground Always Below 1 Ω
      Q20-10 (BRGD) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR