Heavy Tight-Corner Braking Symptom Occurs

Heavy Tight-Corner Braking symptom Occurs When The Vehicle Is Driven and The Steering Wheel Is Turned Fully to Either Side after The Engine Is Started

NOTE: Light tight-corner braking symptom may occur depending on driving conditions. This is not malfunction.

DIAGNOSTIC PROCEDURE
1. CHECK SYSTEM FOR CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to TF-22, "SELF-DIAG RESULT MODE". Self-Diag Result Mode
Is the CAN COMM CIRCUIT [U1000] displayed?
YES >> Perform trouble diagnosis for CAN communication line. Refer to TF-32, "CAN Communication Line". CAN Communication Line
NO >> GO TO 2.
2. CHECK ACCELERATOR PEDAL POSITION SIGNAL CIRCUIT
Perform self-diagnosis for ECM. Refer to EC-55, Emission-Related Diagnostic Information (VQ35DE models). Emission-Related Diagnostic Information Items
Refer to EC-715, Emission-related Diagnostic Information (VK45DE models). Emission-Related Diagnostic Information Items
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 3.
3. CHECK SYSTEM FOR AWD SOLENOID
Perform trouble diagnosis for AWD solenoid system. Refer to TF-28, "AWD Solenoid". AWD Solenoid
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK ELECTRIC CONTROLLED COUPLING
1. Turn ignition switch OFF.
2. Set the selector lever to N (neutral) position and disengage the parking brake.
3. Lift up the vehicle.
4. Rotate the rear propeller shaft by hand.
5. Hold front propeller shaft lightly.
Does front propeller shaft rotate?
YES >> Replace electric controlled coupling for mechanical malfunction (clutch sticking etc.).
NO >> GO TO 5.
5. SYMPTOM CHECK
Check again.
OK or NG
OK >> INSPECTION END
NG >> GO TO 6.
6. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal.
OK or NG
OK >> INSPECTION END
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.