| Last Modified: 11-29-2007 | 1.6 T | |
| Service Category: Steering | Section: Power Assist Systems | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM00000203M004X |
| Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: PROBLEM SYMPTOMS TABLE (2008 Sequoia) | ||
PROBLEM SYMPTOMS TABLE
HINT:
- Use the table below to help determine the cause of the problem symptom. 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.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Power Steering System
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Hard steering |
Tires (Improperly inflated) |
|
|
Power steering fluid level (Low) |
|
|
|
Drive belt (Loose) |
|
|
|
Front wheel alignment (Incorrect) |
|
|
|
Steering system joints (Worn) |
- |
|
|
Suspension arm ball joints (Worn) |
|
|
|
Steering column (Binding) |
- |
|
|
Power steering vane pump (for 2UZ-FE) |
|
|
|
Power steering vane pump (for 3UR-FE) |
|
|
|
Power steering gear |
|
|
|
Poor return |
Tires (Improperly inflated) |
|
|
Front wheel alignment (Incorrect) |
|
|
|
Steering column (Binding) |
- |
|
|
Power steering gear |
|
|
|
Excessive play |
Steering system joints (Worn) |
- |
|
Suspension arm ball joints (Worn) |
|
|
|
Intermediate shaft, Sliding yoke (Worn) |
- |
|
|
Front wheel bearing (Worn) |
|
|
|
Power steering gear |
|
|
|
Abnormal noise |
Power steering fluid level (Low) |
|
|
Steering system joints (Worn) |
- |
|
|
Power steering vane pump (for 2UZ-FE) |
|
|
|
Power steering vane pump (for 3UR-FE) |
|
|
|
Power steering gear |
|
|
|
Power steering system does not operate. |
IG power source circuit |
|
|
VFC Power steering solenoid circuit |
|
|
|
Power steering ECU communication circuit |
|
|
|
Vehicle stability control system |
|
|
|
Steering angle sensor |
|
|
|
SFI system (for 3UR-FE) |
|
|
|
SFI system (for 2UZ-FE) |
|
|
|
Power steering ECU |
|
|
|
When the vehicle is idling, steering effort is high (with the vehicle stopped). |
Tire size and tire pressure |
|
|
Oil reservoir fluid level |
|
|
|
Steering fluid pressure |
|
|
|
Front wheel alignment |
|
|
|
IG power source circuit |
|
|
|
VFC Power steering solenoid circuit |
|
|
|
Power steering ECU communication circuit |
|
|
|
Steering angle sensor |
|
|
|
Power steering ECU |
|
|
|
Even if vehicle speed increases, steering effort does not increase. |
VFC Power steering solenoid circuit |
|
|
Power steering ECU communication circuit |
|
|
|
Vehicle stability control system |
|
|
|
Power steering ECU |
|
|
|
EPS warning light always indicated on combination meter. |
EPS warning light circuit |
|
|
Combination meter |
|
|
|
Power steering ECU |
|
|
|