Checking the Power Supply To the Heater

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.

Ignition off.

Fig 2: Identifying 2-Pin Connectors And Wire Colors
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Voltage Display
Courtesy of VOLVO CARS OF NORTH AMERICA.
- Connect a voltmeter between the red cable and the black cable (ground) on the connector to the blower fan.

The voltmeter should read battery voltage.

OK
Refer to Checking the Signal Cable To The Heater
NOT OK
Refer to Checking For An Open-Circuit