Toyota Yaris: Gf1a (transfer / 4wd / Awd) / 4wd Control Ecu

Toyota Yaris XP210 (2020-2023) Reapir and Service Manual / Drivetrain / Gf1a (transfer / 4wd / Awd) / 4wd Control Ecu

Components

COMPONENTS

ILLUSTRATION

*1

DECK TRIM SIDE PANEL ASSEMBLY RH

*2

4WD ECU ASSEMBLY

N*m (kgf*cm, ft.*lbf): Specified torque

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Removal

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during the 4WD ECU removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced

Replacement Part or Procedure

Necessary Procedure

Effect/Inoperative when not Performed

Link

4WD ECU assembly

  1. ECU Data Save (ECU being replaced)
  2. ECU Data Write (When replacing 4WD ECU assembly) (New ECU)

Active torque split AWD system

HINT:

When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

  • Learning completes when vehicle is driven

    Effect/Inoperative Function When Necessary Procedures are not Performed

    Necessary Procedures

    Link

    Lane tracing assist system

    Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 second or more.

    Pre-collision system

    Stop and start system

    Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes)

  • Learning completes when vehicle is operated normally

    Effect/Inoperative Function When Necessary Procedures are not Performed

    Necessary Procedures

    Link

    Power door lock control system

    • Back door opener

    Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.

    Air conditioning system

    After the ignition switch is turned to ON, the servo motor standard position is recognized.

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PROCEDURE

1. REMOVE DECK TRIM SIDE PANEL ASSEMBLY RH

Click here

2. REMOVE 4WD ECU ASSEMBLY

(a) Disconnect the connector.

(b) Remove the bolt and 4WD ECU assembly.

Installation

INSTALLATION

PROCEDURE

1. INSTALL 4WD ECU ASSEMBLY

(a) Install the 4WD ECU assembly with the bolt.

Torque:

10 N·m {102 kgf·cm, 7 ft·lbf}

(b) Connect the connector.

2. INSTALL DECK TRIM SIDE PANEL ASSEMBLY RH

Click here

3. PERFORM INITIALIZATION

Click here

    Gf1a (transfer / 4wd / Awd)

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    4wd Control Switch

    ComponentsCOMPONENTS ILLUSTRATION *1 CONSOLE BOX ASSEMBLY *2 4WD CONTROL SWITCH (NO. 2 COMBINATION SWITCH ASSEMBLY) RemovalREMOVAL PROCEDURE 1...

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    Categories

    Turning the Engine Off

    Stop the vehicle completely. Manual transaxle: Shift into neutral and set the parking brake.

    Automatic transaxle: Shift the selector lever to the P position and set the parking brake.

    Press the push button start to turn off the engine. The ignition position is off.

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