Heavy Tight-Corner Braking Symptom Occurs

Heavy Tight-corner Braking Symptom Occurs

SYMPTOM: Heavy tight-corner braking symptom occurs when vehicle is driven in AUTO mode and steering wheel is turned fully to either side.

DIAGNOSTIC PROCEDURE

NOTE:
^ Light tight-corner braking symptom may occur depending on driving conditions in AUTO mode. This is not a malfunction.
^ Heavy tight-corner braking symptom occurs when vehicle is driven in the following conditions: 4WD shift switch is "4H" or "4LO", steering wheel is turned fully to either side.

1. CHECK SYSTEM FOR CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to TF-49, "SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)". Self-Diagnostic Procedure (With Consult-II)
Is "CAN COMM CIRCUIT [U1000]" displayed?
YES >> Perform trouble diagnosis for CAN communication line. Refer to TF-112, "CAN Communication Line". CAN Communication Line
NO >> GO TO 2.

2. CHECK SYSTEM FOR 4WD SHIFT SWITCH
Perform trouble diagnosis for 4WD shift switch system. Refer to TF-61, "4WD Shift Switch". 4WD Shift Switch
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.

3. CHECK ACCELERATOR PEDAL POSITION SIGNAL CIRCUIT
Perform self diagnosis for ECM. Refer to EC-121, "SELF-DIAG RESULTS MODE". Testing and Inspection
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 4.

4. CHECK SYSTEM FOR CLUTCH PRESSURE SOLENOID
Perform trouble diagnosis for clutch pressure solenoid system. Refer to TF-104, "Clutch Pressure Switch". Clutch Pressure Switch
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.

5. SYMPTOM CHECK
Check again.
OK or NG
OK >> Inspection End.
NG >> GO TO 6.

6. CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to TF-35, "Transfer Control Unit Input/Output Signal Reference Values". Transfer Control Unit Input/Output Signal Reference Values
OK or NG
OK >> GO TO 7.
NG >> Check transfer control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.

7. CHECK TRANSFER INNER PARTS
1. Disassemble transfer assembly.
2. Check transfer inner parts.
OK or NG
OK >> Inspection End.
NG >> Repair or replace damaged parts.