Checking the Function Of the Glow Plug

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 Connector

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Control Module Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

The 8-pin control module connector is disconnected
Bridge between terminal 3 and terminal 2 (12 V).

The glow plug should heat up and glow after a while.

OK
Refer to Checking the Function Of the Heater
NOT OK
Refer to Checking the Ground Terminals