Diagnostic trouble code (DTC) information

Condition 

Fig 1: Identifying Sun Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

Diagnostic trouble code (DTC) CCM-0009 is stored if the control module registers that the signal from the sun sensor is below 5% of supply voltage (approximately 5 V).

The diagnostic trouble code (DTC) can only be diagnosed for the electronic climate control module (CCM) (ECC) and when the ignition is switched on.

Substitute Value 

• The control module adopts a substitute value corresponding to approximately 20% (200 W/m² ) of the maximum solar heat value.

Possible Source 

• Defective sun sensor
• Short-circuit to ground in the signal cable between the control module and the sun sensor.

Fault symptom[s] 

• The passenger compartment temperature does not drop when the sun intensity is high.