PROBLEM SYMPTOMS TABLE
HINT:
Symptom |
Suspected Area |
See page |
---|---|---|
Steering is heavy. |
Front tires (Improperly inflated, unevenly worn) |
|
Front wheel alignment (Incorrect) |
|
|
Front suspension (Lower ball joint) |
|
|
Power steering gear (for 2GR-FE) |
|
|
Power steering gear (for 1AR-FE) |
|
|
Steering column assembly |
|
|
Torque sensor (Built into steering column assembly) |
- |
|
Power steering motor |
- |
|
Speed sensor |
|
|
Skid control ECU (Built into brake actuator) |
- |
|
Battery and power source system |
- |
|
Power steering ECU power source voltage and relay |
- |
|
Power steering ECU assembly |
|
|
Poor return |
Front tires (Improperly inflated, unevenly worn) |
|
Front wheel alignment (Incorrect) |
|
|
Steering column assembly |
|
|
Power steering ECU assembly |
|
|
Excessive free play |
Front tires (Improperly inflated, unevenly worn) |
|
Front suspension (Lower ball joint) |
|
|
Intermediate shaft, universal joint, sliding yoke (Worn) |
- |
|
Front wheel bearing (Worn) |
|
|
Steering effort differs between right and left or is uneven. |
Rotation angle sensor initialization and torque sensor zero point calibration |
|
Front tires (Improperly inflated, unevenly worn) |
|
|
Front wheel alignment (Incorrect) |
|
|
Front suspension (Lower ball joint) |
|
|
Power steering gear (for 2GR-FE) |
|
|
Power steering gear (for 1AR-FE) |
|
|
Torque sensor (Built into steering column assembly) |
- |
|
Steering column assembly |
|
|
Power steering motor |
- |
|
Power steering ECU assembly |
|
|
While driving, steering effort does not change in accordance with vehicle speed or the steering wheel does not return properly. |
Front suspension (Lower ball joint) |
|
Speed sensor |
|
|
Skid control ECU (Built into brake actuator) |
- |
|
Combination meter |
|
|
Torque sensor (Built into steering column assembly) |
- |
|
Power steering motor |
- |
|
Power steering gear (for 2GR-FE) |
|
|
Power steering gear (for 1AR-FE) |
|
|
Power steering ECU assembly |
|
|
A knocking (or cranking) sound occurs when turning the steering wheel while power steering is operating. |
Front suspension (Lower ball joint) |
|
Steering intermediate shaft |
- |
|
Power steering gear (for 2GR-FE) |
|
|
Power steering gear (for 1AR-FE) |
|
|
Noise occurs when turning the steering wheel during low speed driving. |
Power steering gear (for 2GR-FE) |
|
Power steering gear (for 1AR-FE) |
|
|
Steering column assembly |
|
|
Power steering ECU assembly |
|
|
High-pitched sounds (squeaking) occur when turning the steering wheel slowly with the vehicle stopped. |
Power steering gear (for 2GR-FE) |
|
Power steering gear (for 1AR-FE) |
|
|
Power steering motor |
- |
|
The steering wheel vibrates and noise occurs when turning the steering wheel from lock to lock. |
Power steering gear (for 2GR-FE) |
|
Power steering gear (for 1AR-FE) |
|
|
Steering column assembly |
|
|
PS warning light remains on. |
Proceed to PS warning light remains on |
|
Performance Decline of Brake Function (C1441)
DESCRIPTION
The skid control ECU judges brake failure conditions have occurred based on the
signal from the brake pedal load sensing switch and master cylinder pressure sensor.
NOTICE:
Do not intentionally stop the engine when driving. Even when no malfun ...
System Description
SYSTEM DESCRIPTION
1. DESCRIPTION
The power steering system generates torque through the operation of
the motor and the reduction gear installed on the column shaft in order
to assist steering effort.
The power steering ECU determines dire ...
Open in One Side of CAN Branch Line
DESCRIPTION
If some ECUs and sensors are not displayed on the "CAN Bus Check" screen of the
Techstream and some ECUs and sensors repeatedly appear and disappear from the screen
when the CAN main bus wires are normal (there is no open, short, sho ...