Do you have access to Mitchell1 Prodemand? If you are willing to share user/password (we can pay $250), please get in contact with us ASAP: email operation-charm [[at]] tuta.io or click to submit anonymously. (I know, we said we wouldn't ask any more...but it's important!)
Diagnostic Trouble Code (DTC) Information
Diagnostic trouble code (DTC) information ECM-680D
Condition
The engine control module (ECM) checks the circuit from the engine cooling fan (FC) to the control module box.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal for the engine cooling fan (FC) to the control module box is too low.
The diagnostic trouble code (DTC) can be diagnosed at ignition on or when the engine is running.
Substitute value
- None.
Possible source
- Short-circuit to ground in the signal cable
- Damaged engine cooling fan (FC).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.