Checking the Connection To the Fan Control (Manual Climate Control)

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.

HINT: A yellow cable supplies blower fan speed 2 with voltage

Start the heater.

Fig 1: Identifying Terminals
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Voltage Display
Courtesy of VOLVO CARS OF NORTH AMERICA.
- Connect a voltmeter to the yellow cable at terminal 5 on the relay and to ground (for example the black cable at terminal 4 in the same relay).

The voltmeter should read battery voltage (which may be 11 V if the heater is in the glow phase).

OK
Refer to Replacing the Component
NOT OK
Refer to Checking For An Open-Circuit