Checking the signal cable

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Engine Start Verification

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Connecting Control Unit

Courtesy of VOLVO CARS OF NORTH AMERICA.

Control module connected.
Start the engine
Read off the status of the switch
Carefully remove the climate control module according to Comfort module
Disconnect the climate control module connectors.
Check whether the ON or OFF status is displayed.

Fig 3: Identifying VCT2000 Diagnostic Tool Symbol In VIDA
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 4: DSA Switch/Climate Control Panel
Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the OFF status displayed?

YES
Refer to Replacing the component
NO
Refer to Checking for a short-circuit