Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




Diagnostic trouble code (DTC) CCM-0020 is stored if the climate control module registers that the signal for the blower fan speed is greater than 4.8 V for more than three seconds when the blower fan is activated.

Substitute value
The climate control module signal for control of the blower fan is disengaged.

Possible source
- Contact resistance or oxidation in the terminals
- Open-circuit in the signal cable
- Short-circuit to supply voltage in the signal cable
- Defective power unit.

Fault symptom[s]
- The blower fan does not function.