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 - AWD
| 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 inadequate or no torque at rear wheels | Rear drive unit overheating | CHECK the rear drive unit (RDU) fluid level, correct as necessary. |
| Rear drive unit (RDU) | CHECK rear axle for damage. REFER to: Axle Assembly . | |
| Power transfer unit (PTU) | REFER to: Power Transfer Unit . | |
| Grinding, popping or chattering - noise from the rear axle on acceleration from a stop | Rear drive unit (RDU) | GO to Pinpoint Test B |
Symptom Chart - AWD
| 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 inadequate or no torque at rear wheels | Rear drive unit overheating | CHECK the rear drive unit (RDU) fluid level, correct as necessary. REFER to: Differential Fluid Level Check . |
| Rear drive unit (RDU) | CHECK rear axle for damage. REFER to: Rear Drive Axle and Differential . | |
| Power transfer unit (PTU) | REFER to: Power Transfer Unit . | |
| Grinding, popping or chattering - noise from the rear axle on acceleration from a stop or turn | Wheels/tires | CHECK wheels and tires for damage. REFER to: Wheels and Tires . |
| Rear drive unit (RDU) | CHECK rear axle for damage. REFER to: Rear Drive Axle and Differential . | |
| Driveshaft | CHECK the driveshaft for damage. REFER to: Driveshaft . | |
| Brake System | CHECK the brake system. REFER to: Brake System . | |
| Wheel Bearings | CHECK the wheel bearings for damage. REFER to: Front Wheel Bearing . REFER to: Wheel Bearing and Wheel Hub . | |
| Halfshafts | CHECK the front halfshafts for damage. REFER to: Front Drive Halfshafts . | |
| ABS | CHECK the ABS. REFER to: Anti-Lock Brake System (ABS) and Stability Control . | |
| Rear halfshafts | CHECK the rear halfshafts for damage. REFER to: Rear Drive Halfshafts . | |
| Wiring, terminals or connectors | GO to Pinpoint Test B |