Checking the ground lead

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

Connect an ohmmeter between engine coolant temperature (ECT) sensor connector terminal #2 (control module side) and ground.

Fig 1: Identifying Terminal Connectors

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

The ohmmeter should read approximately 0 Ω.

OK
Refer to Checking the signal cable
NOT OK
Refer to Checking wiring and terminals