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:
DESCRIPTION The engine stop and start ECU uses the park/neutral position switch assembly installed to the continuously variable transaxle assembly to detect when the shift lever is in P or N. WIRING DIAGRAM Click here
CAUTION / NOTICE / HINT NOTICE:
Before replacing the engine stop and start ECU, read the number of starter operations and write it into a new engine stop and start ECU...
INSTALLATION PROCEDURE 1. INSTALL REAR SPOILER ASSEMBLY (a) Engage the clips to install the rear spoiler assembly.
(b) Install the 2 bolts and 3 nuts. Torque: 5.5 N·m {56 kgf·cm, 49 in·lbf} (c) Remove the protective tape. 2. INSTALL REAR SPOILER HOLE COVER (a) Install the 4 rear spoiler hole covers...
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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