Open-circuit, permanent faults
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.
An open-circuit in a cable is indicated by a loss of one or more functions.
Chafed and broken cables or terminals that have come loose are common causes of faults in electrical systems.
For repair of wiring and terminals, see the appropriate Wiring Diagrams.
Checks:
- Disconnect the connectors at both ends of the cable.
Connect an ohmmeter between the ends of the cable.
The ohmmeter should read approximately 0 Ω if there is no open-circuit in the cable.
Always check the control module and control module box connectors to ensure that their pins and sockets are not bent or damaged, as this can cause faults.
Check pins and terminals particularly for this fault. See Check terminals visually .