Checking The Function Of The Overheat Protection Thermostat

Activate the heater. Read off the temperature at the overheat protection thermostat.

On activation of the heater sequence, the heater starts up and operates for approximately 2 min 30 s.

Do not interrupt the heater sequence. The heater is switched off automatically after approximately 2 min 30 s.

Check that the temperature rises when activating the heater.

The temperature should cycle between outside temperature -125°C depending on the status of the heater.

Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

Courtesy of VOLVO CARS CORPORATION

Refer to CHECKING THE COMPONENT AND WIRING