BLIND SPOT MONITOR SYSTEM, Diagnostic DTC:C1ABD and C1ABE

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

DESCRIPTION

  • DTC C1ABD is stored when the blind spot monitor sensor RH detects a +B short in rear cross traffic alert buzzer (blind spot monitor buzzer) circuit.

  • DTC C1ABE is stored when the blind spot monitor sensor RH detects a ground short or open in rear cross traffic alert buzzer (blind spot monitor buzzer) circuit.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1ABD

Short to +B in Buzzer

Both of the following conditions are met:

  • Blind spot monitor system is on with ignition switch 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

  • Rear cross traffic alert buzzer (blind spot monitor buzzer)

  • Harness or connector

C1ABE

Short to GND or Open in Buzzer

Both of the following conditions are met:

  • Blind spot monitor system is on with ignition switch 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

  • Rear cross traffic alert buzzer (blind spot monitor buzzer)

  • Harness or connector

WIRING DIAGRAM

E254403E08

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

      Body Electrical > Blind Spot Monitor Slave > Clear DTCs

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

      Click here

      Body Electrical > Blind Spot Monitor Slave > Trouble Codes

    Result

    Proceed to

    No DTCs are output

    DTCs are output
    No DTCs are output

    USE SIMULATION METHOD TO CHECK

    Click here

    DTCs are output

  2. CHECK HARNESS AND CONNECTOR (REAR CROSS TRAFFIC ALERT BUZZER - BATTERY AND BLIND SPOT MONITOR SENSOR RH)

    1. Disconnect the N34 rear cross traffic alert buzzer (blind spot monitor buzzer) connector.

    2. Disconnect the T1 blind spot monitor sensor RH connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      N34-2 (BZN) - T1-3 (BUZ)

      Always

      Below 1 Ω

      N34-2 (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

      N34-1 (BZP) - Body ground

      Ignition switch ON

      11 to 14 V

      N34-1 (BZP) - Body ground

      Ignition 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.

      Click here

      Body Electrical > Blind Spot Monitor Slave > Trouble Codes

    Result

    Proceed to

    No DTCs are output

    DTCs are output
    No DTCs are output

    END (REAR CROSS TRAFFIC ALERT BUZZER [BLIND SPOT MONITOR BUZZER] IS DEFECTIVE)

    DTCs are output

    REPLACE BLIND SPOT MONITOR SENSOR RH

    Click here