Toyota Yaris: Active Torque Split Awd System / Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
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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. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
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Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Symptom | Suspected Area | Link |
Tight-corner braking phenomenon* | Steering sensor |
|
Brake control system |
|
AWD ECU assembly |
|
Transmission coupling assembly |
|
AWD warning message remains displayed | AWD warning light circuit |
|
AWD warning message is not displayed | AWD warning light circuit |
|
AWD control switch (No. 2 combination switch assembly) does not operate | AWD control switch (No. 2 combination switch assembly) circuit |
|
HINT:
*: Tight corner braking phenomenon: a phenomenon in which a AWD vehicle may lurch and decelerate due to a rotational speed difference between the front and rear wheels, such as during low-speed cornering in AWD mode.
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...
DTC CHECK / CLEAR DTC CHECK (a) Check for DTC(s). Chassis > Four Wheel Drive > Trouble Codes (b) Check the details of the DTCs. NOTICE:
Make sure to clear the DTCs after repair...
Other information:
INSTALLATION CAUTION / NOTICE / HINT CAUTION: Wear protective gloves. Sharp areas on the parts may injure your hands. HINT:
Use the same procedure for the driver side and front passenger side.
The procedure listed below is for the driver side.
PROCEDURE 1...
BEFORE STARTING DRIVING ADJUSTMENT CAUTION / NOTICE / HINT HINT:
Purpose of millimeter wave radar beam axis learning
If the installation position or orientation of the millimeter wave radar sensor is changed due to it being removed and reinstalled or replaced with a new one, or due to the front bumper or radiator grille being replaced, it is necessary for the millimeter wave radar sensor to learn the driving direction of the vehicle in order for each driving support system to operate correctly...
Categories
No special break-in is necessary, but a few precautions in the first 600
miles (1,000 km) may add to the performance, economy, and life of
the vehicle.
Do not race the engine.
Do not maintain one constant speed, either slow or fast, for a long
period of time.
Do not drive constantly at full-throttle or high engine rpm for
extended periods of time.
Avoid unnecessary hard stops.
Avoid full-throttle starts.
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