Toyota Yaris: Active Torque Split Awd System / Calibration
CALIBRATION
NOTICE:
- 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.
- When the AWD ECU assembly is replaced, it is necessary to perform the following in order: ECU Data Initialization and ECU Data Write.
- When the AWD linear solenoid (transmission coupling assembly) is replaced, it is necessary to perform the following in order: ECU Data Initialization and ECU Data Write (when replacing AWD linear solenoid (transmission coupling assembly)).
-
When the yaw rate and acceleration sensor (airbag sensor assembly) is replaced, it is necessary to perform ECU Data Initialization. Parts Replacement Compensation Table
Replaced Part
Necessary Procedure
AWD ECU assembly
- ECU Data Save (ECU being replaced)
- ECU Data Write (When replacing AWD ECU assembly) (New ECU)
AWD linear solenoid (transmission coupling assembly)
- ECU Data Write (When replacing AWD linear solenoid (transmission coupling assembly))
Yaw rate and acceleration sensor (airbag sensor assembly)
- ECU Data Initialization
Tire
- ECU Data Initialization (When performing tire replacement after RoB code X2104 is output)
ECU DATA SAVE
(a) According to the display on the GTS, perform ECU Data Save.
| *1 | AWD linear solenoid (transmission coupling assembly) compensation code label |
HINT:
If the compensation code cannot be read, record the compensation code (4 digits in 8 blocks) on the transmission coupling assembly compensation code label.
Chassis > Four Wheel Drive > Utility| Tester Display |
|---|
| ECU Data Save |
(b) According to the display on the GTS, complete work.
ECU DATA INITIALIZATION
(a) According to the display on the GTS, perform ECU Data Initialization.
Chassis > Four Wheel Drive > Utility| Tester Display |
|---|
| ECU Data Initialization |
(b) According to the display on the GTS, complete work.
ECU DATA WRITE (WHEN REPLACING AWD ECU ASSEMBLY)
(a) According to the display on the GTS, perform ECU Data Write.
Chassis > Four Wheel Drive > Utility| Tester Display |
|---|
| ECU Data Write |
(b) According to the display on the GTS, complete work.
ECU DATA WRITE (WHEN REPLACING TRANSMISSION COUPLING ASSEMBLY)
(a) Record the printed compensation code (4 digits in 8 blocks) of a new rear transmission coupling assembly.
| *1 | AWD linear solenoid (transmission coupling assembly) compensation code label |
(b) According to the display on the GTS, perform ECU Data Write.
Chassis > Four Wheel Drive > Utility| Tester Display |
|---|
| ECU Data Write |
(c) Using the on-screen buttons, input the compensation code.
(d) According to the display on the GTS, complete work.
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure listed to troubleshoot the Active Torque Split AWD System.
*: Use the GTS.
PROCEDURE 1...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table...
Other information:
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Fuel Gauge
The fuel gauge shows approximately how much fuel is remaining in the tank when the ignition is switched ON. We recommend keeping the tank over 1/4 full.
