Trouble Diagnosis Chart for Symptoms
WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
If 4WD warning lamp turns ON, perform self-diagnosis. Refer to "SELF-DIAGNOSTIC PROCEDURE ".
TROUBLE DIAGNOSIS CHART
| Symptom | Condition | Check item | Reference page |
|---|---|---|---|
| 4WD SHIFT INDICATOR LAMP AND 4LO INDICATOR LAMP DO NOT TURN ON (4WD shift indicator lamp and 4LO indicator lamp check) |
Ignition switch: ON | Power supply and ground for transfer control unit | |
| Transfer shut off relay | |||
| Combination meter | |||
| 4WD WARNING LAMP DOES NOT TURN ON (4WD WARNING LAMP CHECK) | Ignition switch: ON | Power supply and ground for transfer control unit | |
| Transfer shut off relay | |||
| Combination meter | |||
| 4WD SHIFT INDICATOR LAMP OR 4LO INDICATOR LAMP DOES NOT CHANGE | Engine running | 4WD shift switch | |
| Wait detection switch | |||
| Neutral-4LO switch | |||
| ATP switch | |||
| 2-4WD solenoid | |||
| Transfer control device | |||
| Actuator motor | |||
| Actuator position switch | |||
| Transfer inner parts | |||
| ATP WARNING LAMP TURNS ON | Engine running | CAN communication line | |
| 4WD shift switch | |||
| PNP switch signal | |||
| ATP switch | |||
| Combination meter | |||
| Transfer inner parts | |||
| 4LO INDICATOR LAMP REPEATS FLASHING | Engine running | Wait detection switch | |
| Neutral-4LO switch | |||
| Transfer inner parts | |||
| 4WD WARNING LAMP FLASHES RAPIDLY (2 TIMES/SECOND) | While driving | Transfer fluid temperature | |
| Tire size is different between front and rear of vehicle | |||
| 4WD WARNING LAMP FLASHES SLOWLY (1 TIME/2 SECONDS) | While driving | Tire size is different between front and rear of vehicle. | |
| Transfer fluid temperature | |||
| Clutch pressure switch | |||
| HEAVY TIGHT-CORNER BRAKING SYMPTOM OCCURS (SEE NOTE.) |
|
CAN communication line | |
| 4WD shift switch | |||
| Accelerator pedal position signal | |||
| Clutch pressure solenoid | |||
| Transfer inner parts | |||
| 4WD SYSTEM DOES NOT OPERATE | While driving | 4WD shift switch | |
| Clutch pressure switch | |||
| Transfer inner parts |
NOTE:
- Light tight-corner braking symptom may occur depending on driving conditions in AUTO mode. This is not a malfunction.
- Heavy tight-corner braking symptom occurs when vehicle is driven in the following conditions: 4WD shift switch is "4H" or "4LO", steering wheel is turned fully to either side.