Toyota Yaris: Active Torque Split Awd System / AWD Warning Light Remains ON

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Drivetrain / Gf1a (transfer / 4wd / Awd) / Active Torque Split Awd System / AWD Warning Light Remains ON

DESCRIPTION

The AWD ECU assembly is connected to the combination meter assembly via the CAN communication system.

If the AWD ECU assembly stores any DTCs which are related to the active torque split AWD system, the warning message is displayed on the multi-information display in the combination meter assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.
  • When the AWD ECU assembly is replaced, before removing the AWD ECU assembly, it is necessary to perform ECU Data Save to save the original AWD ECU assembly information.

    Click here

HINT:

Check the condition of each related circuit connector before troubleshooting.

Click here

PROCEDURE

1.

CHECK VEHICLE CONTROL HISTORY (ACTIVE TORQUE SPLIT AWD SYSTEM)

(a) Using the GTS, check for Vehicle Control History.

Click here

Chassis > Four Wheel Drive > Utility

Tester Display

Vehicle Control History (RoB)

HINT:

If vehicle control history is stored when the active torque split AWD system are suspended, the warning message is displayed.

Result

Proceed to

There is no vehicle control history for when the active torque split AWD system were suspended.

A

There is vehicle control history for when the active torque split AWD system were suspended.

B

B

PERFORM TROUBLESHOOTING AND REPAIR REGARDING VEHICLE CONTROL HISTORY

A

2.

CHECK IF AWD ECU ASSEMBLY CONNECTOR IS SECURELY CONNECTED

(a) Check that there is no looseness at the locking and connecting parts of the AWD ECU assembly connector.

(b) Disconnect the O119 and O120 AWD ECU assembly connectors.

(c) Check the connector case and the terminal for deformation and corrosion.

OK:

No deformation or corrosion

(d) Connect the O119 and O120 AWD ECU assembly connectors.

NG

CONNECT CONNECTOR TO ECU CORRECTLY

OK

3.

CHECK HARNESS AND CONNECTOR (IG1 TERMINAL)

(a) Turn the ignition switch off.

(b) Disconnect the O119 AWD ECU assembly connector.

(c) Turn the ignition switch to ON.

(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

O119-24 (IG1) - Body ground

Ignition switch ON

11 to 14 V

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

CHECK HARNESS AND CONNECTOR (GND TERMINAL)

(a) Turn the ignition switch off.

(b) Disconnect the O119 AWD ECU assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

O119-1 (GND) - Body ground

Always

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

5.

READ VALUE USING GTS (AWD WARNING LIGHT)

(a) According to the display on the GTS, read the Data List.

Chassis > Four Wheel Drive > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

4WD Warning Light

AWD warning (multi-information display)

OFF / ON

OFF: Warning off

ON: Warning on

-

Chassis > Four Wheel Drive > Data List

Tester Display

4WD Warning Light

(b) Check the GTS display condition of the AWD warning light.

Result

Proceed to

Display of the Data List remains OFF

A

Display of the Data List remains ON

B

A

GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

B

REPLACE AWD ECU ASSEMBLY

    Lost Communication with ECM/PCM "A" Missing Message (U010087,U012687,U012987)

    DESCRIPTION The AWD ECU assembly receives signals from the ECM, steering sensor and skid control ECU (brake actuator assembly) via CAN communication. DTC No...

    AWD Warning Light does not Come ON

    DESCRIPTION Refer to "AWD Warning Light Remains ON". Click here WIRING DIAGRAM Refer to "AWD Warning Light Remains ON". Click here CAUTION / NOTICE / HINT Refer to "AWD Warning Light Remains ON"...

    Other information:

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Engine/Power Switch Signal Compare Failure (B227862)


    DESCRIPTION This DTC is stored when the SSW1 contact signal, SSW2 contact signal and SSW3 contact signal, which are detected when the engine switch is operated, do not match. DTC No. Detection Item DTC Detection Condition Trouble Area Note B227862 Engine/Power Switch Signal Compare Failure When the engine switch is operated, the SSW1 contact signal, SSW2 contact signal and SSW3 contact signal do not match...

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Speedometer Malfunction


    DESCRIPTION The combination meter assembly receives vehicle speed signals from the skid control ECU (brake actuator assembly) via CAN communication. The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU (brake actuator assembly)...

    Categories

    Front Seat Belt Pretensioners

    The front seat belt pretensioners are designed to deploy in moderate or severe frontal, near frontal collisions.

    In addition, the pretensioners operate when a side collision or a rollover accident is detected. The pretensioners operate differently depending on what types of air bags are equipped. For more details about the seat belt pretensioner operation, refer to the SRS Air Bag Deployment Criteria.

    read more

     
    Copyright © 2022 www.toyaris4.com