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. (See WHEEL AND TIRE SPECIFICATION.) • 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. (See 4WD SOLENOID INSPECTION.) • 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. (See FRONT WHEEL ALIGNMENT.) (See REAR WHEEL ALIGNMENT [4WD].) • 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.