Toyota Tacoma 2015-2018 Service Manual: Rear Right Center Sensor Malfunction (C1AE8)

Toyota Tacoma 2015-2018 Service Manual / Park Assist / Monitoring / Intuitive Parking Assist System / Rear Right Center Sensor Malfunction (C1AE8)

DESCRIPTION

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

DTC No.	DTC Detection Condition	Trouble Area
C1AE8	A malfunction of the No. 1 ultrasonic sensor (rear center sensor RH).	No. 1 ultrasonic sensor (rear center sensor RH) 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 C1AE8 is output	A
DTC C1AE8 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 RH)

(a) Replace the No. 1 ultrasonic sensor (rear center sensor RH) 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 C1AE8 is output	NG

END (REAR CENTER SENSOR RH WAS DEFECTIVE)

REPLACE CLEARANCE WARNING ECU ASSEMBLY

Lost Communication with ECM / PCM "A" (U0100-U0142,U0155)

DESCRIPTION These DTCs are stored when the clearance warning ECU assembly cannot receive and recognize several signals via the CAN communication system. DTC No. DTC Detection ...

Rear Right Sensor Malfunction (C1AE9)

DESCRIPTION The No. 1 ultrasonic sensor (rear corner sensor RH) is installed on the rear bumper. The ECU detects obstacles based on signals received from the No. 1 ultrasonic sensor (rear corner ...

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Operation Check
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Lost Communication with ECM / PCM "A" (U0100,U0104,U0122,U0125,U0126,U0129)
DESCRIPTION The millimeter wave radar sensor assembly and ECM communicate with each sensor and ECU via CAN communication. If any malfunction is detected in a CAN communication circuit, one or more CAN communication system DTCs are stored. DTC No. Detection Item ...