Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-621C

Condition




The engine control module (ECM) checks the control signal cable for the engine cooling fan (FC). The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects a fault in the engine cooling fan (FC) module.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute value
- None.

Possible source
- Short-circuit to supply voltage in the signal cable
- Damaged engine cooling fan (FC) control module.

Fault symptom[s]
- The engine cooling fan (FC) runs continuously even when the ignition is switched off.