Dtc C1Ae1 Front Left Sensor Malfunction


DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR DTC

REPLACE NO. 1 ULTRASONIC SENSOR (FRONT CORNER SENSOR LH)

CHECK FOR DTC

DTC C1AE1 Front Left Sensor Malfunction


DESCRIPTION

The No. 1 ultrasonic sensor (front corner sensor LH) is installed on the front bumper. The ECU detects obstacles based on signals received from the No. 1 ultrasonic sensor (front corner sensor LH). If the No. 1 ultrasonic sensor (front corner sensor LH) has an open or other malfunction, it will not function normally.

DTC Code
DTC Detection Condition
Trouble Area
C1AE1
A malfunction of the No. 1 ultrasonic sensor (front corner sensor LH).
  1. No. 1 ultrasonic sensor (front corner sensor LH)
  2. Clearance warning ECU

INSPECTION PROCEDURE

NOTICE:
If the DTC is output after repairs, turn the engine switch on (IG) and turn the TOYOTA parking assist-sensor system on. Then clear the DTC (LandCruiser RM000000VKU06EX.html).
1.CHECK FOR DTC

  1. Check for DTCs (LandCruiser RM000000VKU06EX.html).

    Result
    Result
    		Proceed to
    No DTC is output
    		A
    Only DTC C1AE1 is output
    		B
    DTC C1AE1 and C1AEC are output
    		C



B
Go to step 2

C
GO TO DTC (C1AEC) (LandCruiser RM000003N4V04UX.html)
A

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)

2.REPLACE NO. 1 ULTRASONIC SENSOR (FRONT CORNER SENSOR LH)

  1. Replace the No. 1 ultrasonic sensor (front corner sensor LH) with a normally functioning sensor (LandCruiser RM00000470F01EX.html).

    HINT:
    All of the sensors are interchangeable. To confirm whether a sensor is functioning normally, switch it with a known good sensor from the other end of the vehicle.

NEXT


3.CHECK FOR DTC

  1. Clear the DTCs (LandCruiser RM000000VKU06EX.html).

  1. Check for DTCs (LandCruiser RM000000VKU06EX.html).

    Result
    Result
    		Proceed to
    No DTC is output
    		A
    DTC C1AE1 is output (for LHD)
    		B
    DTC C1AE1 is output (for RHD)
    		C



B
REPLACE CLEARANCE WARNING ECU (LandCruiser RM00000466X025X.html)

C
REPLACE CLEARANCE WARNING ECU (LandCruiser RM00000470500NX.html)
A

END (NO. 1 ULTRASONIC SENSOR WAS DEFECTIVE)