1, 2 and 3 Digit Codes: 10

Trouble Code Number
- Scan tool 10
- General scan tool (none listed)
- MIL 42

Fault Message
- MFI relay (ASD relay) Control Circuit

Background
- The MFI relay (ASD relay) controls the battery voltage supplied to the fuel injectors, ignition coils, and generator.

- The PCM provides a ground path for the MFI relay (ASD relay).

- This DTC indicates an open or short-circuit condition in the control circuit.

Range of Check
- Battery voltage: 10 V or more
- Engine: Running

Set Condition

- Open or short circuit is detected in the MFI relay (ASD relay) for 3 seconds.

Probable Cause
- Relay coil open or shorted
- MFI relay (ASD relay) control circuit open or shorted
- Inoperative circuit driver in PCM