Toyota Venza: Lost Communication with ECM (U0101,U0073,U0126,U0129,U0142,U0182,U1000)

Toyota Venza Service Manual / Lighting (ext) / Lighting System / Lost Communication with ECM (U0101,U0073,U0126,U0129,U0142,U0182,U1000)

DESCRIPTION

The DTCs are stored when the CAN communication system is malfunctioning.

DTC No.	DTC Detection Condition	Trouble Area
U0101	Lost communication with ECM	CAN communication system
U0073	Control module communication bus off	CAN communication system
U0126	Lost communication with steering angle sensor	CAN communication system
U0129	Lost communication with skid control ECU	CAN communication system
U0142	Lost communication with main body ECU (driver side junction block assembly)	CAN communication system
U0182	Lost communication with AFS ECU (headlight swivel ECU assembly)	CAN communication system
U1000	Can communication failure (message registry)	CAN communication system

PROCEDURE

1.	CHECK FOR DTC

(a) Clear the DTCs (See page ).

(b) Check for DTCs (See page ).

OK:

DTCs are not output.

USE SIMULATION METHOD TO CHECK

GO TO CAN COMMUNICATION SYSTEM

Light Sensor Circuit Malfunction (B1244)

DESCRIPTION The automatic light control sensor detects ambient light, converts it into an electrical signal, and outputs it to the main body ECU (driver side junction block assembly). The main bo ...

Automatic High Beam Mirror (B124A)

DESCRIPTION The DTC is stored when the main body ECU (driver side junction block assembly) detects malfunctions in the inner rear view mirror assembly. DTC No. DTC Detection ...

Other materials about Toyota Venza:

Installation
INSTALLATION PROCEDURE 1. INSTALL NO. 1 COOLER THERMISTOR (a) Install the No. 1 cooler thermistor as shown in the illustration. Part Length A 34.3 mm ...

Inspection
INSPECTION PROCEDURE 1. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Rear LH) (a) Check the switch function. (1) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Co ...

Freeze Frame Data
FREEZE FRAME DATA 1. DESCRIPTION The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was moving or ...