NO.1 FREQUENT FRONT WHEEL SLIP

id030300800400

1
Frequent front wheel slip
DESCRIPTION
Front wheels slip frequently during acceleration on low-friction road.
POSSIBLECAUSE
•  Tire traction performance is extremely poor for given road friction. (4WD system is normal.)
•  Improper wheel alignment (4WD system is normal.)
•  Rear differential oil temperature is extremely high (Fail-safe condition)
•  Differential oil temperature sensor malfunction (Fail-safe condition)
•  Compare slip frequency with another vehicle of the same model (under the same road conditions and tire traction performance).
•  Replace tires with others of the same model and perform test under the same road conditions to determine if the malfunction was caused by tire traction performance.
•  Coupling component malfunction
•  4WD solenoid malfunction

Warning
•  During simulation driving, vehicle stability may decrease extremely and cause an accident. Be sure to perform the simulation test driving in a safe area.

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY DSC/RSC, PCM, TCM, INSTRUMENT CLUSTER AND 4WD SYSTEM DTCs
•  Verify DSC/RSC, PCM, TCM, instrument cluster and 4WD system DTCs using the M-MDS.
•  Are there any DTCs present?
Yes
Go to applicable DTC inspection.
No
Go to next step.
2
VERIFY TIRE AIR PRESSURE
•  Inspect tire air pressure.
•  Is it within specification?
Yes
Go to next step.
No
Adjust tire air pressure, then go to next step.
3
COMPARE WITH SAME MODEL TIRES
•  Install tires of the same model.
•  Perform simulation driving.
•  Does malfunction recur?
Yes
Go to next step.
No
4WD system is normal.
4
COMPARE WITH SAME MODEL VEHICLE
•  Install tires of malfunctioning vehicle to another same model vehicle.
•  Perform simulation driving.
•  Does malfunction recur?
Yes
4WD system is normal.
No
Go to next step.
5
INSPECT 4WD SOLENOID
•  Inspect 4WD solenoid.
•  Is coupling component solenoid normal?
Yes
Inspect harness between 4WD solenoid and 4WD CM, then go to next step.
No
Replace coupling component.
(See COUPLING COMPONENT REMOVAL/INSTALLATION.)
(See COUPLING COMPONENT DISASSEMBLY.)
(See COUPLING COMPONENT ASSEMBLY.)
6
INSPECT WHEEL ALIGNMENT
•  Inspect wheel alignment.
•  Is it normal?
Yes
Replace coupling component.
(See COUPLING COMPONENT REMOVAL/INSTALLATION.)
(See COUPLING COMPONENT DISASSEMBLY.)
(See COUPLING COMPONENT ASSEMBLY.)
No
Inspect wheel alignment, and adjust it if necessary.