No.5 TIGHT-CORNER BRAKING PHENOMENON OCCURS

id030300801100

Possible Cause

• The 4WD lock system is designed to improve driveability on snow covered roads and free a stuck vehicle. Abnormal noise or vibration may occur while turning on a dry surface with the 4WD lock on.

• 4WD lock solenoid malfunction (sticking in 4WD lock)

• The difference in front and rear wheel rotation cannot be absorbed due to a high locking rate of the RBC unit (close to that of 4WD lock) and this causes a braking phenomenon.

• Tight-corner braking phenomenon occurs while turning sharply on a dry surface because of the RBC unit construction. (Verify that the 4WD system is normal by comparing with another vehicle.)

• RBC unit malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION

1

INSPECT TIRE PRESSURE

•  Inspect the tire pressure.

•  Is the tire pressure normal?

Yes

Go to the next step.

No

Adjust the tire pressure to the specification and drive the vehicle. If the malfunction is verified, go to the next step.

2

COMPARE WITH ANOTHER VEHICLE

•  Perform the driving test with another vehicle.

•  Does the malfunction occur in another vehicle?

Yes

The 4WD system is normal.

No

Go to the next step.

3

INSPECT 4WD LOCK SOLENOID

•  Inspect the 4WD lock solenoid.

•  Is the 4WD lock solenoid normal?

Yes

Perform the diagnostic procedure “No.2 MODE CHANGE BETWEEN AUTO AND 4WD ON IS NOT PERFORMED NORMALLY”.

No

Replace the RBC unit.

STEP	INSPECTION		ACTION
1	INSPECT TIRE PRESSURE • Inspect the tire pressure. • Is the tire pressure normal?	Yes	Go to the next step.
1		No	Adjust the tire pressure to the specification and drive the vehicle. If the malfunction is verified, go to the next step.
2	COMPARE WITH ANOTHER VEHICLE • Perform the driving test with another vehicle. • Does the malfunction occur in another vehicle?	Yes	The 4WD system is normal.
2		No	Go to the next step.
3	INSPECT 4WD LOCK SOLENOID • Inspect the 4WD lock solenoid. • Is the 4WD lock solenoid normal?	Yes	Perform the diagnostic procedure “No.2 MODE CHANGE BETWEEN AUTO AND 4WD ON IS NOT PERFORMED NORMALLY”.
3		No	Replace the RBC unit.