Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: 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

B

GO TO DTC (C1AED)

C

USE SIMULATION METHOD TO CHECK

A

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.

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 C1AE8 is output

NG

OK

END (REAR CENTER SENSOR RH WAS DEFECTIVE)

NG

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 ...

Other materials:

Inspection
INSPECTION PROCEDURE 1. INSPECT RADIATOR CORE SUB-ASSEMBLY Check the core plate for damage. Text in Illustration *1 Core Plate *2 Radiator Core If the sides of the core plate groove are deformed, it is impossible to reassem ...

Terminals Of Ecm
TERMINALS OF ECM 1. CHECK ECM HINT: The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage for t ...

Check For Intermittent Problems
CHECK FOR INTERMITTENT PROBLEMS HINT: Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the Techstream when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default) ...

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