Toyota Tacoma 2015-2018 Service Manual: Rear Left Center Sensor Malfunction (C1AE7)

Toyota Tacoma 2015-2018 Service Manual / Park Assist / Monitoring / Intuitive Parking Assist System / Rear Left Center Sensor Malfunction (C1AE7)

DESCRIPTION

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

DTC No.	DTC Detection Condition	Trouble Area
C1AE7	A malfunction of the No. 1 ultrasonic sensor (rear center sensor LH).	No. 1 ultrasonic sensor (rear center sensor LH) Clearance warning ECU assembly

CAUTION / NOTICE / HINT

NOTICE:

If DTCs are output after repairs, turn the ignition switch to ON and turn the back sonar or clearance sonar switch assembly on. Then clear the DTCs (See page PROCEDURE ).

PROCEDURE

1.	CHECK DTC OUTPUT

(a) Check for DTCs (See page Result ).

Result

Result	Proceed to
Only DTC C1AE7 is output	A
DTC C1AE7 and C1AED are output	B
No DTCs are output	C

GO TO DTC (C1AED)

USE SIMULATION METHOD TO CHECK

2.	REPLACE NO. 1 ULTRASONIC SENSOR (REAR CENTER SENSOR LH)

(a) Replace the No. 1 ultrasonic sensor (rear center sensor LH) with a known good one (See page HINT: ).

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.

3.	CHECK DTC OUTPUT

(a) Clear the DTCs (See page (b) Check for DTCs (See page ). ).

(b) Check for DTCs (See page Result ).

Result

Result	Proceed to
No DTCs are output	OK
DTC C1AE7 is output	NG

END (REAR CENTER SENSOR LH WAS DEFECTIVE)

REPLACE CLEARANCE WARNING ECU ASSEMBLY

Rear Sensor Communication Malfunction (C1AED)

DESCRIPTION This DTC is stored when there is an open or short circuit in the communication line between the rear sensors and the ECU, or when there is a malfunction in a rear sensor. ...

Clearance Sonar Main Switch Circuit

DESCRIPTION The back sonar or clearance sonar switch assembly is installed at the base of the driver side of the instrument panel. When the back sonar or clearance sonar switch assembly is turned ...

Other materials:

Lost Communication with ECM / PCM "A" (U0100,U0126,U0129,U0142)
DESCRIPTION These DTCs are stored if there is a malfunction in the CAN communication system connected to the blind spot monitor sensor. HINT: If CAN communication system DTCs are stored, they may also be stored for other systems. DTC Code DTC Detection Condition ...

Precaution
PRECAUTION 1. CAUTION REGARDING INTERFERENCE WITH ELECTRONIC DEVICES CAUTION: People with implantable cardiac pacemakers, cardiac resynchronization therapy-pacemakers or implantable cardioverter defibrillators should keep away from the smart key system antennas. The radio waves ma ...

Sound Quality is Bad Only when CD is Played (Volume is Too Low)
PROCEDURE 1. REPLACE CD AND RECHECK (a) Replace the CD with a known good one and check that the malfunction disappears. OK: Malfunction disappears. OK END NG REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY ...