Engine Management

Diagnostic Chart:

Trouble Code Number
- Scan tool 11

Fault Message
- Generator Field Not Switching Properly

Background
- The PCM receives generator field input.
- Battery voltage is supplied to the generator through the MFI relay (ASD) relay). Range of Check
- Ignition switch: ON
- MFI relay (ASD relay): ON

Set Condition
- Open or short circuit is detected in the generator field control circuit.

Probable Cause
- Field driver circuit open or shorted
- Generator internal open or short
- PCM failed