Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: 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

B

GO TO DTC (C1AED)

C

USE SIMULATION METHOD TO CHECK

A

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.

NEXT

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

OK

END (REAR CENTER SENSOR LH WAS DEFECTIVE)

NG

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:

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Smart Key System (for Start Function) DTC Code Detection Item See page B2271 Ignition Hold Monitor Malfunction B2274 ACC Monitor Malfunction ...

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT SPEEDOMETER (a) Check speedometer operation. NOTICE: The meter ECU receives the vehicle speed signal from the skid control ECU via CAN communication. Therefore, perform the following inspection referring to values on the Data List of th ...

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (a) Disconnect the 1D and 1F driver side junction block connectors. (b) Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connectors ...

В© 2011-2019 Copyright www.ttguide.net