Checking ground leads

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 knock sensor (KS) connector terminal 2 (engine control module (ECM) side) and ground. Connect an ohmmeter between knock sensor (KS) connector terminal #3 (control module side) and ground. In both cases the ohmmeter should display approximately 0 Ω.

Fig 1: Identifying Knock Sensor (KS) Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Was a fault detected?

YES
Refer to Checking the ground lead
NO
Refer to Checking the ground lead