Normal Operation
WARNING: This page is about a different car, the 2007 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
The instrument cluster receives the 4WD status from the 4WD control module over the high speed controller area network (CAN) communication bus. When the 4WD mode switch is in the 4WD high position, the 4WD high (4x4) indicator illuminates. When the 4WD mode switch in the 4WD low position, the 4WD low (4x4 LOW) indicator illuminates.
DTC U0102 - sets if the 4WD status message is missing for more than 5 seconds and the instrument cluster turns on both the 4WD high and 4WD low indicators.
Possible Causes
- 4WD control module
- Instrument cluster