Toyota Yaris: 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 | - | - |
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 |
| 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.
-
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
4wd Control Switch
ComponentsCOMPONENTS ILLUSTRATION
*1 CONSOLE BOX ASSEMBLY *2 4WD CONTROL SWITCH (NO. 2 COMBINATION SWITCH ASSEMBLY) RemovalREMOVAL PROCEDURE 1...
Other information:
Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Terminals Of Ecu
TERMINALS OF ECU NOTICE: Turning the ignition switch to ON with connectors disconnected may cause DTCs to be stored. Make sure to clear the DTCs after inspection has been performed. Do not apply excessive force to the millimeter wave radar sensor assembly connector...
Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Diagnosis System
DIAGNOSIS SYSTEM EURO-OBD (EUROPEAN SPEC) (a) When troubleshooting Europe On-Board Diagnostic (Euro-OBD) vehicles, an OBD scan tool (complying with ISO 15765-4) must be connected to the vehicle. Various data output from the vehicle's ECM can then be read...
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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.