BLIND SPOT MONITOR SYSTEM, Diagnostic DTC:C1ABD, C1ABE

DTC Code DTC Name
C1ABD Short to +B in Buzzer
C1ABE Short to GND or Open in Buzzer

DESCRIPTION


DTC No. Detection Item DTC Detection Condition Trouble Area
C1ABD Short to +B in Buzzer

    Both of the following conditions are met:

  • The blind spot monitor system is on.

  • The blind spot monitor sensor is not sending voltage to the buzzer but the buzzer receives voltage above a specified level for a specified period of time.

  • Blind spot monitor sensor RH

  • RCTA buzzer (blind spot monitor buzzer)

  • Harness or connector
C1ABE Short to GND or Open in Buzzer

    Both of the following conditions are met:

  • The blind spot monitor system is on.

  • The current flowing to the buzzer is below a specified value when buzzer operation voltage is being sent to the buzzer.

  • Blind spot monitor sensor RH

  • RCTA buzzer (blind spot monitor buzzer)

  • Harness or connector

WIRING DIAGRAM

B004OIQE59

CAUTION / NOTICE / HINT

Note


  • When checking for DTCs, make sure that the blind spot monitor system is turned on.

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

PROCEDURE


  1. CHECK DTC


    1. Turn the power switch off.

    2. Turn the power switch on (IG).

    3. Recheck for DTCs and check if the same DTC is output again.


      Body Electrical > Blind Spot Monitor Slave > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (RCTA BUZZER - BLIND SPOT MONITOR SENSOR RH AND AUXILIARY BATTERY)


    1. Disconnect the M57*1 or M58*2 RCTA buzzer (blind spot monitor buzzer) connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the M56 blind spot monitor sensor RH connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (for LHD)
      Tester Connection Condition Specified Condition
      M57-2 (BZN) - M56-3 (BUZ) Always Below 1 Ω
      M57-2 (BZN) or M56-3 (BUZ) - Body ground Always 10 kΩ or higher
      Standard Resistance (for RHD)
      Tester Connection Condition Specified Condition
      M58-2 (BZN) - M56-3 (BUZ) Always Below 1 Ω
      M58-2 (BZN) or M56-3 (BUZ) - Body ground Always 10 kΩ or higher

    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage (for LHD)
      Tester Connection Switch Condition Specified Condition
      M57-2 (BZN) or M56-3 (BUZ) - Body ground Power switch on (IG) Below 1 V
      M57-1 (BZP) - Body ground Power switch on (IG) 11 to 14 V
      M57-1 (BZP) - Body ground Power switch off Below 1 V
      Standard Voltage (for RHD)
      Tester Connection Switch Condition Specified Condition
      M58-2 (BZN) or M56-3 (BUZ) - Body ground Power switch on (IG) Below 1 V
      M58-1 (BZP) - Body ground Power switch on (IG) 11 to 14 V
      M58-1 (BZP) - Body ground Power switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK RCTA BUZZER (BLIND SPOT MONITOR BUZZER)


    1. Replace the RCTA buzzer (blind spot monitor buzzer).

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > Blind Spot Monitor Slave > Clear DTCs

    3. Recheck for DTCs and check if the same DTC is output again.


      Body Electrical > Blind Spot Monitor Slave > Trouble Codes
      OK
      DTC C1ABD and C1ABE are not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (RCTA BUZZER [BLIND SPOT MONITOR BUZZER] WAS DEFECTIVE)

    NG

    REPLACE BLIND SPOT MONITOR SENSOR RH Click here