Checking the operating status

Fig 1: Identifying Ignition ON

GLL101051

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition on.
Start the heater.
Read off the operating status and temperature of the heater.

HINT: The flame sensor should register the flame. If the temperature increases, even though status 3 is not obtained, the fault may be due to an open-circuit in the cable or the flame sensor may be blocked.

Check the cable between terminal #8 on the control module and the flame sensor for an open-circuit according to Open-circuit, permanent faults .
- For other values, see Signal specification .
Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA
Courtesy of VOLVO CARS OF NORTH AMERICA.

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Refer to Verification