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 Code DTC Detection Condition Trouble Area
C1ABD

  • Both of the following conditions are met:


    • The blind spot monitor system is on with the power switch on (IG).

    • 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 LH

  • RCTA buzzer (blind spot monitor buzzer)

  • Wire harness or connector
C1ABE

  • Both of the following conditions are met:


    • The blind spot monitor system is on with the power switch on (IG).

    • 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 LH

  • RCTA buzzer (blind spot monitor buzzer)

  • Wire harness or connector

WIRING DIAGRAM

A000NTCE66

CAUTION / NOTICE / HINT

Note


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

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

PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs Click here.

    2. Recheck for DTCs and check if the same DTC is output again Click here.

      OK
      DTC C1ABD is not output.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

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


    1. Disconnect the U60 RCTA buzzer (blind spot monitor buzzer) connector.

    2. Disconnect the U59 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
      U60-2 (BZN) - U59-3 (BUZ) Always Below 1 Ω
      U60-2 (BZN) - Body ground Always 10 kΩ or higher

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      U60-1 (BZP) - Body ground Power switch on (IG) 11 to 14 V
      U60-1 (BZP) - Body ground Power switch off Below 1 V

    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.

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

      OK
      DTC C1ABD is not output.

    OK

    END (RCTA BUZZER (BLIND SPOT MONITOR BUZZER) IS DEFECTIVE)

    NG

    REPLACE BLIND SPOT MONITOR SENSOR LH Click here