Dtc C1Ae9 Rear Right Sensor Malfunction

Audio Visual Telematics. Land Cruiser. Urj200, 202 Grj200 Vdj200
Park Assist Monitoring. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR DTC

REPLACE NO. 1 ULTRASONIC SENSOR (RR SENSOR)

CHECK FOR DTC

DTC C1AE9 Rear Right Sensor Malfunction


DESCRIPTION

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

DTC Code
DTC Detection Condition
Trouble Area
C1AE9
A malfunction of the No. 1 ultrasonic sensor (RR sensor).
  1. No. 1 ultrasonic sensor (RR sensor)
  2. Parking assist ECU*1
  3. Clearance warning ECU assembly*2
  1. *1: w/ Side Mode System
  2. *2: w/o Side Mode 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

  1. Clear the DTCs (Click here).

  1. Check for DTCs (Click here).

    OK:
    DTC C1AE9 is not output.


NG
Go to step 2
OK

USE SIMULATION METHOD TO CHECK (Click here)

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

  1. Replace the No. 1 ultrasonic sensor (RR sensor) with a normally functioning one (Click here).


NEXT


3.CHECK FOR DTC

  1. Clear the DTCs (Click here).

  1. Check for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC C1AE9 is not output
    		A
    DTC C1AE9 is output (w/ Side Mode System)
    		B
    DTC C1AE9 is output (w/o Side Mode System)
    		C



B
REPLACE PARKING ASSIST ECU (Click here)

C
REPLACE CLEARANCE WARNING ECU ASSEMBLY (Click here)
A

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