DTC C1AE4 Front Right Sensor Malfunction

DESCRIPTION

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

DTC Code	DTC Detection Condition	Trouble Area
C1AE4	A malfunction of the No. 1 ultrasonic sensor (FR sensor).	No. 1 ultrasonic sensor (FR sensor) Parking assist ECU1 Clearance warning ECU assembly2

*1: w/ Side Monitor System

*2: w/o Side Monitor System

INSPECTION PROCEDURE

NOTICE:

If the DTC is output after repairs, turn the engine switch on (IG) and move the shift lever to R. Then clear the DTC.

1.CHECK FOR DTC

Clear the DTCs ().

Check for DTCs ().

OK:
DTC C1AE4 is not output.

NG

Go to step 2

OK

USE SIMULATION METHOD TO CHECK ()

2.REPLACE NO. 1 ULTRASONIC SENSOR (FR SENSOR)

Replace the No. 1 ultrasonic sensor (FR sensor) with a normally functioning one ().

NEXT

3.CHECK FOR DTC

Clear the DTCs ().

Check for DTCs ().

Result
Result	Proceed to
DTC C1AE4 is not output	A
DTC C1AE4 is output (w/ Side Monitor System)	B
DTC C1AE4 is output (w/o Side Monitor System)	C

B

REPLACE PARKING ASSIST ECU ()

C

REPLACE CLEARANCE WARNING ECU ASSEMBLY ()

A

END (NO. 1 ULTRASONIC SENSOR [FR SENSOR] IS DEFECTIVE)

PARK ASSIST / MONITORING

Land Cruiser URJ200 URJ202 GRJ200 VDJ200

TOYOTA PARKING ASSIST-SENSOR SYSTEM