Engine Management

Scan Tool 61 (MIL 27):

Trouble Code Number
- Scan tool 61
- General Scan Tool P0204
- MIL 27

Fault Message
- Injector #4 Control Circuit

Background
- Grounds for the injector circuits are provided by the PCM.
- Battery power is provided through the MFI relay. (ASD relay)
- This DTC is set it an open or short-circuit condition is detected in the control circuit for the individual injector

Range of Check
- Battery voltage: 12 V or more
- MFI relay (ASD relay): ON
- Engine: 3,000 r/min or less

Set Condition
- Counter electromotive force is not detected for three seconds immediately after injectors turn off.

Probable Cause
- Open or shorted injector control circuit
- Open injector
- Open MFI (ASD) supply at injector
- Driver in PCM failed