System Will Not Operate

Free-Wheeling To Lock (2WD To 4WD):

• Faulty Lock Solenoid
• Faulty Vacuum Actuator
• Vacuum Leak At Actuator Or Reservoir
• Faulty One-Way Check Valve Lock To Free-Wheeling (4WD To 2WD)
• Faulty AFW Main Switch
• Faulty Lock Solenoid
• Faulty Vacuum Actuator
• Vacuum Leak At Actuator Or Reservoir
• Faulty One-Way Check Valve