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:
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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.