Test U: The Water In Fuel Warning Indicator Is Never/Always On

PINPOINT TEST U: THE WATER IN FUEL WARNING INDICATOR IS NEVER/ALWAYS ON

U1:

U2-U3:

Normal Operation
The powertrain control module (PCM) is hardwired to a water in fuel sensor. When water is detected in the fuel, the PCM sends a message over the communication network to the instrument cluster, to illuminate the water in fuel indicator.

Possible Causes
- PCM
- instrument cluster