Checking the Combustion Fan Motor Ground Side

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 OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Disconnecting Connector

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition off
Remove heater fan shroud
Disconnect the control unit 8-pin connector.

Fig 3: Identifying Control Module Connector Terminals
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 4: Identifying Ohmmeter
Courtesy of VOLVO CARS OF NORTH AMERICA.
- Connect an ohmmeter between the combustion fan motor chassis where the fan motor is installed to the heater and location 8 on the control unit connector.
Fig 5: Identifying Fan Motor
Courtesy of VOLVO CARS OF NORTH AMERICA.

The ohmmeter should display approximately 0.

OK
Refer to Checking the Combustion Fan Motor Windings .
NOT OK
Refer to Checking For An Open Circuit