Toyota Tacoma (2015-2018) Service Manual: Lost Communication with ECM / PCM "A" (U0100-U0142,U0155)

Toyota Tacoma (2015-2018) Service Manual / Park Assist / Monitoring / Intuitive Parking Assist System / 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 Condition	Trouble Area
U0100	Lost Communication with ECM / PCM "A"	CAN communication system
U0101	Lost Communication with TCM
U0142	Lost Communication with Body Control Module "B"
U0155	Lost Communication with Instrument Panel Cluster Control Module (Combination Meter)

HINT:

When 2 or more DTCs starting with "U" are output simultaneously, inspect the connectors and wire harnesses of each ECU.

PROCEDURE

1.	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
DTCs (CAN communication system DTC) are output	A
No DTCs are output	B

GO TO CAN COMMUNICATION SYSTEM

USE SIMULATION METHOD TO CHECK

Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART Intuitive Parking Assist System DTC Code Detection Item See page C1AE6 Rear Left Sensor Malfunction ...

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 ...

Other materials:

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. CHECK BATTERY CONDITION NOTICE: If the battery is weak or if the engine is difficult to start, recharge the battery and perform inspections again before returning the vehicle to the customer. (a) Check the battery for damage or deformation. If severe damage, ...

Removal
REMOVAL PROCEDURE 1. REMOVE LOWER STEERING COLUMN COVER 2. REMOVE UPPER STEERING COLUMN COVER 3. REMOVE WINDSHIELD WIPER SWITCH ASSEMBLY (a) Disconnect the 2 connectors. Text in Illustration *a Protective Tape ...

Lost Communication with ECM / PCM "A" (U0100,U0122)
DESCRIPTION This DTC is output when communication is lost with the skid control ECU (brake actuator assembly) or ECM. DTC No. Detection Item DTC Detection Condition Trouble Area U0100 Lost Communication with ECM / PCM " ...