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

Toyota Venza 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 ).

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 C1AE1 Front Left Sensor Malfunction ...

Front Sensor Communication Malfunction (C1AEC)

DESCRIPTION This DTC is stored when there is an open or short circuit in the communication line between the front sensors and the ECU, or when there is a malfunction in a front sensor. ...

Other materials about Toyota Venza:

Inspection
INSPECTION CAUTION / NOTICE / HINT NOTICE: Ensure that fingers or articles of clothing do not get caught in moving parts when performing this test. PROCEDURE 1. INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY (a) Check the LO operation. (1) Conne ...

Precaution
PRECAUTION 1. PRECAUTION FOR VEHICLE WITH SRS AIRBAG AND SEAT BELT PRETENSIONER (a) Some operations in this section may affect the SRS airbags. Prior to performing the corresponding operations, read the precautions regarding the SRS airbags (See page ). ...

Cooling System
On-vehicle Inspection ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT FOR COOLANT LEAK CAUTION: Do not remove the radiator cap while the engine and radiator are still hot. Pressurized hot engine coolant and steam may be released and cause serious burns. N ...