Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Rear Left Sensor Malfunction (C1AE6)

DESCRIPTION

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

DTC No.

DTC Detection Condition

Trouble Area

C1AE6

A malfunction of the No. 1 ultrasonic sensor (rear corner sensor LH).

  • No. 1 ultrasonic sensor (rear corner 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 C1AE6 is output

A

DTC C1AE6 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 CORNER SENSOR LH)

(a) Replace the No. 1 ultrasonic sensor (rear corner 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 C1AE6 is output

NG

OK

END (REAR CORNER SENSOR LH WAS DEFECTIVE)

NG

REPLACE CLEARANCE WARNING ECU ASSEMBLY

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 ...

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. ...

Other materials:

Check Bus 3 Lines for Short Circuit
DESCRIPTION There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 6 (CA3H) and 21 (CA3L) of the central gateway ECU (network gateway ECU) is below 54 Ω. Detection Item Trouble Area Resis ...

Components
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On-vehicle Inspection
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