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NO.1 FREQUENT FRONT WHEEL SLIP

id030300800400

1 | Frequent front wheel slip
[TROUBLESHOOTING HINTS] • 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, PCM, TCM, AND 4WD SYSTEM DTCs • Verify DSC, PCM, TCM, and 4WD system DTCs using WDS or equivalent. • 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 okay.
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 okay.
No | Go to next step.
5 | INSPECT 4WD SOLENOID • Inspect 4WD solenoid. (See 4WD SOLENOID INSPECTION [L3]) (See 4WD SOLENOID INSPECTION [L3 Turbo]) • Is coupling component solenoid okay? | Yes | Inspect harness between 4WD solenoid and 4WD CM, then go to next step.
No | Replace coupling component. (See COUPLING COMPONENT REMOVAL/INSTALLATION [L3].) (See COUPLING COMPONENT REMOVAL/INSTALLATION [L3 Turbo].)
6 | INSPECT WHEEL ALIGNMENT • Inspect wheel alignment. • Is it okay? | Yes | Replace coupling component. (See COUPLING COMPONENT REMOVAL/INSTALLATION [L3].) (See COUPLING COMPONENT REMOVAL/INSTALLATION [L3 Turbo].)
No | Inspect wheel alignment, and adjust it if necessary.