Symptom Chart
WARNING: This page is about a different variant/trim than selected.
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .
Symptom Chart - Four-Wheel Drive Systems
| Condition | Possible Sources | Actions |
|---|---|---|
| Unable to duplicate customer concern; no DTCs present | The concern description is inaccurate | CARRY OUT the AWD System Functional Test. GO to Pinpoint Test A |
| Vehicle has no or inadequate torque at rear wheels | Transfer case overheating | INSPECT the duct that cools the transfer case sump is free and clear of debris. Clear as necessary. |
| Fuse(s) Wiring, terminals or connectors Active Torque Coupling (ATC) solenoid AWD Relay Module PCM Active Torque Coupling Clutch |
GO to Pinpoint Test D | |
| Wheels/tires | CHECK wheel and tires. REFER to: Wheels and Tires . | |
| Transfer case | CHECK transfer case. REFER to: Transfer Case . | |
| Rear Drive Unit (RDU) | CHECK rear axle assembly. REFER to: Axle Assembly . | |
| Vehicle binds in a turn or resists turning/pulsates | Wheels/tires | CHECK wheel and tires. REFER to: Wheels and Tires . |
| Transfer case | CHECK transfer case. REFER to: Transfer Case . | |
| Driveshaft | CHECK driveshaft. REFER to: Driveshaft . | |
| Wiring, terminals or connectors Active Torque Coupling (ATC) solenoid |
GO to Pinpoint Test E | |
| Brake system | CHECK brake system. REFER to: Brake System . | |
| Wheel bearings | CHECK suspension system. REFER to: Suspension System . | |
| Halfshafts | CHECK the front halfshafts. REFER to: Front Drive Halfshafts . | |
| ABS | CHECK ABS. REFER to: Anti-Lock Brake System (ABS) and Stability Control . | |
| Vehicle shudders in a straight line | Wiring, terminals or connectors Active Torque Coupling (ATC) solenoid AWD Relay Module Active Torque Coupling Clutch |
GO to Pinpoint Test F |
| Tire/axle out of acceptable range | Wheels/tires ABS |
GO to Pinpoint Test B |