Dtc C1Abd Short To +B In Buzzer


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DTC

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

REPLACE BLIND SPOT MONITOR BUZZER (RCTA BUZZER)

CHECK DTC

DTC C1ABD Short to +B in Buzzer

DTC C1ABE Short to GND or Open in Buzzer


DESCRIPTION

  1. DTC C1ABD is stored when the blind spot monitor sensor RH detects a +B short in RCTA buzzer (blind spot monitor buzzer) circuit.
  2. DTC C1ABE is stored when the blind spot monitor sensor RH detects a ground short or open in RCTA buzzer (blind spot monitor buzzer) circuit.

DTC Code
DTC Detection Condition
Trouble Area
C1ABD
  1. Both of the following conditions are met:
    1. Blind spot monitor main switch assembly (multi-function switch) is on with engine switch on (IG).
    2. 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.
  1. Blind spot monitor sensor RH
  2. RCTA buzzer (blind spot monitor buzzer)
  3. Harness or connector
C1ABE
  1. Both of the following conditions are met:
    1. Blind spot monitor main switch assembly (multi-function switch) is on with engine switch on (IG).
    2. The current flowing to the buzzer is below a specified value when buzzer operation voltage is being sent to the buzzer.
  1. Blind spot monitor sensor RH
  2. RCTA buzzer (blind spot monitor buzzer)
  3. Harness or connector

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Park Assist Monitoring.Toyota Parking Assist-Sensor System (W/ Multi-Display). Dtc C1Abd Short To +B In Buzzer


INSPECTION PROCEDURE

NOTICE:
  1. When checking for DTCs, make sure that the blind spot main switch assembly (multi-function switch) is on.
  2. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CHECK DTC

  1. Clear the DTCs (LandCruiser RM000004RS201SX.html).

  1. Recheck for DTCs and check if the same DTC is output again (LandCruiser RM000004RS201SX.html).

    OK:
    No DTCs are output.


NG
Go to step 2
OK

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)

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

  1. Disconnect the R44 RCTA buzzer (blind spot monitor buzzer) connector.

  1. Disconnect the R43 blind spot monitor sensor RH connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    R44-2 (BZN) - R43-3 (BUZ)
    		Always
    		Below 1 Ω
    R44-2 (BZN) - Body ground
    		Always
    		10 kΩ or higher

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    R44-1 (BZP) - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    R44-1 (BZP) - Body ground
    		Engine switch off
    		Below 1 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.REPLACE BLIND SPOT MONITOR BUZZER (RCTA BUZZER)

  1. Replace the RCTA buzzer (blind spot monitor buzzer) with a new or normally functioning one (LandCruiser RM00000470F01GX.html).


NEXT


4.CHECK DTC

  1. Clear the DTCs (LandCruiser RM000004RS201SX.html).

  1. Recheck for DTCs and check if the same DTC is output again (LandCruiser RM000004RS201SX.html).

    OK:
    No DTCs are output.


NG
REPLACE BLIND SPOT MONITOR SENSOR RH (LandCruiser RM00000470F01GX.html)
OK

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