Checking For An Open Circuit

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 Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Check the ground connection on the combustion fan motor ground side for an open circuit, as described in Open-Circuit, Permanent Faults
Check that the combustion fan motor is correctly installed to the combustion unit chassis.
Check that the black ground wire is correctly installed in the combustion unit chassis with washer. Repair the fault or replace the ground wire.

Fig 2: Checking For Open Circuit

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 1: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Check the yellow/red wire between location 4 on the control unit connector and the combustion fan motor single pole connector for an open circuit, as described in Open-Circuit, Permanent Faults .
Repair the fault or replace the wire.

Fig 2: Checking For Open Circuit

Courtesy of VOLVO CARS OF NORTH AMERICA.