Toyota Venza manuals

Toyota Venza: Control Module Communication Bus OFF (U0073/86,U0100/85,U0129/83)

Toyota Venza Service Manual / Mf1a Transfer / 4wd / Awd / Active Torque Control 4wd System / Control Module Communication Bus OFF (U0073/86,U0100/85,U0129/83)

DESCRIPTION

  • The AWD control ECU inputs the signals sent from the ECM and skid control ECU via the CAN communication system.
  • When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.

DTC No.

DTC Detection Condition

Trouble Area

U0073/86

  1. When the following continues for 5 seconds or more:

    - Signals from the AWD control ECU are not received.

  2. When the following occurs 10 times consecutively:

    - A communication malfunction (bus off) occurs one or more times within 0.1 seconds.

CAN communication system

U0100/85

  1. When both of the following continue for 2 seconds or more:

    - The voltage of the IG1 terminal is 10 V or more.

    - At a vehicle speed of 60 km/h (38 mph) or more, communication with the ECM cannot be performed.

CAN communication system

U0129/83

  1. When the following continues for 3 seconds or more:

    - The voltage of the IG1 terminal is 10 V or more.

    - Communication with the skid control ECU cannot be performed.

CAN communication system

PROCEDURE

1.

CHECK FOR DTC

(a) Check for DTCs (See page ).


(b) Record the output DTCs (active torque control 4WD system).

HINT:

When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.


NEXT

GO TO CAN COMMUNICATION SYSTEM

Low Power Supply Voltage (C1241/94)
DESCRIPTION If a malfunction in the power source circuit occurs, or a malfunction in communication with the skid control ECU or in a speed sensor occurs, the AWD control ECU will prohibit operati ...

Malfunction in Deceleration Sensor (C1245/93)
DESCRIPTION If a malfunction in the deceleration sensor circuit occurs, the AWD control ECU will output this DTC. DTC No. DTC Detecting Condition Trouble Area ...

Other materials about Toyota Venza:

Clearance Sonar Main Switch Circuit
DESCRIPTION The back sonar or clearance sonar switch assembly is installed at the base of the driver side of the instrument panel. When the clearance sonar main switch is turned on, an on signal is sent to the clearance warning ECU assembly. The intuitiv ...

Diagnosis System
DIAGNOSIS SYSTEM 1. DESCRIPTION (a) When troubleshooting On-Board Diagnostic (OBD II) vehicles, the vehicle must be connected to the OBD II scan tool (complying with SAE J1987). Various data output from the vehicle TCM can then be read. (b) OBD II regul ...

Components
COMPONENTS ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ...

© 2016-2025 Copyright www.tovenza.com

0.1412