Open-circuit, permanent faults
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.
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.
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 .