Vehicle Does Not Enter AWD Mode

VEHICLE DOES NOT ENTER AWD MODE

Description

Vehicle does not enter 4-wheel drive mode even though AWD warning lamp turned to OFF.


Diagnosis Procedure


1. CHECK AWD WARNING LAMP

Turn the ignition switch ON.
Does AWD warning lamp turn ON?
YES- GO TO 2.
NO- Proceed to diagnosis procedure. Transfer Case ETX13C.

2. CHECK PARKING BRAKE SWITCH SIGNAL

With CONSULT
Check "P BRAKE SW" of CONSULT "DATA MONITOR" for "ALL MODE AWD/4WD".





Is the inspection result normal?
YES- GO TO 3.
NO- Proceed to diagnosis procedure. Parking Brake Switch.

3. CRUISE TEST

Drive the vehicle for a period of time.
Does any symptom occur?
YES- Replace electric controlled coupling for mechanical malfunction (mechanical engagement of clutch is not possible). Exploded View (VQ-35HR), Exploded View (VK-50VE).
NO- Check each harness connector pin terminal for disconnection.