Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




Diagnostic trouble code (DTC) CCM-007A is stored if the climate control module registers that the signal in the cable from the engine coolant temperature (ECT) sensor is greater than approximately 4.75 V (95% of the power supply at approximately 5 V).

Substitute value
The engine coolant temperature (ECT) is set to 70°C.

Possible source
- Contact resistance or oxidation in the terminals
- Open-circuit in the signal cable or in the ground lead
- Short-circuit to battery voltage in the signal cable or ground lead
- Defective engine coolant temperature (ECT) sensor.

Fault symptom[s]
- Irregular cold air from the air conditioning (A/C) system.