NO.1 FREQUENT FRONT WHEEL SLIP [i-ACTIV AWD SYSTEM]

id0303d4134900

1

Frequent front wheel slip

[TROUBLESHOOTING HINTS]

•  Tire traction performance is extremely poor for given road friction. (i-ACTIV AWD system is normal.)

•  Improper wheel alignment (i-ACTIV AWD 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 HU/CM, PCM, TCM, EPS CONTROL MODULE, AND 4WD CONTROL MODULE DTCs • Verify DSC HU/CM, PCM, TCM, EPS control module, and 4WD control module DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5))].) (See ON-BOARD DIAGNOSTIC TEST [PCM (WITH CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5))].) (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)].) (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) (See DTC INSPECTION [4WD CONTROL MODULE].) (See DTC INSPECTION [DSC HU/CM].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [TCM (FW6A-EL, FW6AX-EL)].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [TCM (GW6A-EL, GW6AX-EL)].) (See DTC INSPECTION [ELECTRIC POWER STEERING (EPS) CONTROL MODULE].) • Are there any DTCs present?	Yes	Go to applicable DTC inspection. (See DTC TABLE [PCM (WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5))].) (See DTC TABLE [PCM (WITH CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5))].) (See DTC TABLE [PCM (SKYACTIV-G 2.5T)].) (See DTC TABLE [PCM (SKYACTIV-D 2.2)].) (See DTC TABLE [4WD CONTROL MODULE].) (See DTC TABLE [DSC HU/CM].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [TCM (FW6A-EL, FW6AX-EL)].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [TCM (GW6A-EL, GW6AX-EL)].) (See DTC TABLE [ELECTRIC POWER STEERING (EPS) CONTROL MODULE].)
1		No	Go to next step.
2	VERIFY TIRE AIR PRESSURE • Inspect tire air pressure. (See TIRE PRESSURE ADJUSTMENT.) (See WHEEL AND TIRE SPECIFICATION.) • Is it within specification?	Yes	Go to next step.
2		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.
3		No	i-ACTIV AWD 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	i-ACTIV AWD system is okay.
4		No	Go to next step.
5	INSPECT 4WD SOLENOID • Inspect 4WD solenoid. (See 4WD SOLENOID INSPECTION.) • Is coupling component solenoid okay?	Yes	Inspect harness between 4WD solenoid and 4WD control module, then go to next step.
5		No	Replace coupling component. (See COUPLING COMPONENT REMOVAL/INSTALLATION.)
6	INSPECT WHEEL ALIGNMENT • Inspect wheel alignment. • Is it okay?	Yes	Replace coupling component. (See COUPLING COMPONENT REMOVAL/INSTALLATION.)
6		No	Inspect wheel alignment, and adjust it if necessary.