Checking Function Of Power Unit

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition on.
Select a Manual control setting on the blower fan switch.
Read off status of power unit communication.
Check that communication is working correctly.

If communication is OK then the status will be OK, if it is not OK then the status reading will be NOT OK

Fig 2: Identifying VCT2000
Courtesy of VOLVO CARS OF NORTH AMERICA.

Is communication OK?

YES
Refer to Intermittent Fault
NO
Refer to Checking Connectors