Checking Blower Fan Switch Function

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.
Go into scrolling values.
Read off blower fan switch position.
Slide blower fan speed selector slowly between limit positions several times and check the values shown are correct in relation to the position indicated on the control panel.

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

Is the blower fan switch OK?

NO
Refer to Reading Off Data And Replacing Components
YES
Refer to Intermittent Fault