FAIL-SAFE CHART
If a problem occurs in the power steering system, the power steering warning light in the combination meter comes on and the power steering assist is stopped, locked at a particular point or decreased simultaneously to protect the system.
Power Steering System
DTC Code |
Detection Condition |
Fail-safe Operation |
---|---|---|
C15F0 |
Short circuit between power steering solenoid valve terminals SOF+ and ground |
Assist force is restricted. |
Short circuit between power steering solenoid valve terminals SOF- and ground |
Power assist continues as normal. |
|
Short circuit between power steering solenoid valve terminals SOF+ and SOF- |
Assist force is restricted. |
|
Power steering solenoid valve open circuit |
Assist force is restricted. |
|
C15F1 |
Steering angle sensor circuit malfunction |
The power steering system is limited depending on which ECU has lost communication. For details, refer to Fail-safe Function. |
C1544 |
Engine speed signal malfunction |
|
C1541 |
Vehicle speed signal malfunction |
|
U0100 |
Lost Communication with ECM / PCM "A" |
|
U0126 |
Lost Communication with Steering Angle Sensor Module |
|
U0129 |
Lost Communication with Brake System Control Module |
1. FAIL-SAFE FUNCTION
If the power steering ECU assembly cannot receive the steering angle signal, steering zero point memory, vehicle speed signal or engine speed signal, the power steering warning light in the combination meter illuminates and the vehicle enter a fail-safe mode.
Malfunction Area |
Fail-Safe Mode |
|||
---|---|---|---|---|
Steering Angle Signal |
Steering Zero Point Memory |
Vehicle Speed Signal |
Engine Speed Signal |
|
X |
- |
- |
- |
|
- |
X |
- |
- |
|
- |
- |
X |
- |
Assume vehicle speed 40 km/h (25 mph) and control each compensation |
- |
- |
- |
X |
|
X |
X |
- |
- |
|
X |
- |
X |
- |
Constant fluid volume |
X |
- |
- |
X |
|
- |
X |
X |
- |
|
- |
X |
- |
X |
|
- |
- |
X |
X |
|
- |
X |
X |
X |
|
X |
- |
X |
X |
Constant fluid volume |
X |
X |
- |
X |
|
X |
X |
X |
- |
Constant fluid volume |
X |
X |
X |
X |
Constant fluid volume |
HINT:
X: Malfunction
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE SHIFT LEVER CAP
2. REMOVE POSITION INDICATOR HOUSING ASSEMBLY
(a) Detach the 4 claws and remove the floor shift position indicator
housing.
3. REMOVE INDICATOR LIGHT ...
Mechanical System Tests
MECHANICAL SYSTEM TESTS
1. STALL SPEED TEST
HINT:
This test is to check the overall performance of the engine and transmission.
CAUTION:
To ensure safety, perform this test in an open and level area that provides
good traction.
The stall s ...