Symptom Chart: Four Wheel Drive (4WD) Systems
Diagnostics in this service information assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to DIAGNOSTIC METHODS
for information regarding Ford-specific diagnostic practices.
SYMPTOM CHART
| Condition |
Possible Sources |
Actions |
- Unable to duplicate customer concern; no Diagnostic Trouble Codes (DTCs) present
|
|
|
- Vehicle binds in a turn or resists turning, pulsates or shudders in a straight line
|
- Wiring, terminals or connectors
- Matching wheel/tire size, brand and tread wear
- tire pressure
|
|
- Hill descent control inoperative/does not operate correctly
|
- Fuse(s)
- Wiring, terminals or connectors
|
- CARRY OUT the network test.
- If the scan tool communicates with the Anti-Lock Brake System (ABS), REFER to HILL DESCENT CONTROL
.
- If the scan tool responds with no communication with the Anti-Lock Brake System (ABS), REFER to Diagnostic Routine B .
|