Toyota Yaris: Active Torque Split Awd System / Calibration
CALIBRATION
NOTICE:
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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.
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When the AWD ECU assembly is replaced, it is necessary to perform the following in order: ECU Data Initialization and ECU Data Write.
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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)).
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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)
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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) | |
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.
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 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:
DESCRIPTION The following DTCs are stored when there is a communication malfunction between the millimeter wave radar sensor and each sensor or ECU. DTC No. Detection Item DTC Detection Condition Trouble Area U010087 Lost Communication with ECM/PCM "A" Missing Message When the ignition switch is ON for 3 seconds or more, an ECM communication malfunction continues for approximately 3 seconds or more...
DESCRIPTION Detection Item Symptom Trouble Area Engine Stop and Start ECU Communication Stop Mode Communication stop for "Stop and Go/Start" is indicated on the "Communication Bus Check" screen of the GTS. Click here
Engine stop and start ECU branch line or connector
Power source circuit of engine stop and start ECU
Engine stop and start ECU ground circuit
Engine stop and start ECU
WIRING DIAGRAM
CAUTION / NOTICE / HINT CAUTION: When performing the confirmation driving pattern, obey all speed limits and traffic laws...