VOLVO
MMM-3100 - GPS-antenna. Open circuit
System
Multi Media Module (MMM)
Volvo models this fault code applies to
Applies to the following models:
6 modelsC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013), XC90 (2003–)
What does this fault code mean?
The module monitors the current in the wire coming from the GPS antenna. The code is set when it finds a break in that wire, and the car position on the map may then be wrong.
Possible causes
- Open circuit in the signal wire
- Loose connection
- Contact resistance or oxidation
What you can do
- 1Look for damage, chafing and loose connectors on the antenna wire running from the module to the GPS antenna
- 2Check that the connectors at the multimedia module and at the antenna are fully seated and free from oxidation
- 3If nothing is visible, have a workshop measure the wire from the module to the GPS antenna for a break
- 4Erase the code and check whether it returns
Symptoms you may notice2
- The car position on the map is incorrect
- The navigation does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.