Engine Management

Scan Tool 11 (MIL 41):

Trouble Code Number
- Scan tool 11
- General Scan Tool (None listed)
- MIL 41

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