Toyota Venza: Lost Communication with ECM / PCM "A" (U0100,U0129)

Toyota Venza Service Manual / Power Assist Systems / Power Steering System / Lost Communication with ECM / PCM "A" (U0100,U0129)

DESCRIPTION

The power steering ECU receives signals from the ECM and the brake actuator assembly (skid control ECU) via the CAN communication system.

DTC No.	DTC Detection Condition	Trouble Area
U0100	Lost communication with ECM/PCM "A"	CAN communication system ECM
U0129	Lost communication with brake system control module	CAN communication system Brake actuator assembly (Skid control ECU)

PROCEDURE

1.	CHECK FOR DTC (CAN COMMUNICATION SYSTEM)

(a) Clear the DTCs (See page ).

(b) Check for DTCs (See page ).

OK:

DTC is not output.

CHECK INTERMITTENT PROBLEMS

GO TO CAN COMMUNICATION SYSTEM

On-vehicle Inspection

ON-VEHICLE INSPECTION PROCEDURE 1. CHECK STEERING EFFORT (TORQUE) NOTICE: Some of these service operations may affect the SRS airbags. Read the precautionary notices concerning the SRS airbag sy ...

Assist Map Number Mismatch (C1582)

DESCRIPTION When an incorrect ECM or brake actuator assembly (skid control ECU) is installed after the assist map has been recorded in the power steering ECU, then DTC C1582 is stored because the ...

Other materials about Toyota Venza:

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE NO. 2 HEADLIGHT BULB (for Halogen Headlight) (a) Turn the No. 2 headlight bulb in the direction indicated by the arrow shown in the illustration, and remove it. NOTICE: Do not touch the bulb glass. ...

Installation
INSTALLATION PROCEDURE 1. INSTALL OUTER MIRROR SWITCH (a) Engage the 4 claws to install the outer mirror switch. 2. INSTALL OUTER MIRROR SWITCH ASSEMBLY (a) Engage the 2 claws to install ...

Inspection
INSPECTION PROCEDURE 1. INSPECT REAR NO. 3 SPEAKER ASSEMBLY (for 13 Speakers) (a) With the speaker installed, check that there is no looseness or other abnormalities. (b) Check that there is no foreign matter in the speaker, no tears on the speaker cone ...