Diagnostic trouble code (DTC) information
Condition
- Diagnostic trouble code (DTC) ECM-6100 is stored in the engine control module (ECM) if there is a short-circuit to supply voltage or ground, or an open circuit in the control signal circuit between the engine control module (ECM) and the engine cooling fan control module or if the temperature is too high in the engine cooling fan control module driver.
NOTE:
The electric cooling fan may have a post-running time of up to approx. 6 minutes after the engine has been shut off. The time for the electric cooling fan's post-running depends on the engine's temperature, temperature in the engine compartment as well as the pressure level in the AC system.
Substitute Value
- engine cooling fan (FC) switched off
Possible Source
Signal too high:
- short-circuit to supply voltage in the signal cable
- defective engine fan control module
Signal too low:
- short-circuit to ground in the signal cable
- open-circuit in the signal cable
- defective engine fan control module
Faulty signal:
- obstructed fan blade
- defective engine fan control module
Fault symptom[s]
- Engine runs hot
- Electric cooling fan does not operate