VOLVO
IAM-B12A012 - Auxiliary Input 2. General Electrical Failures. Circuit short to battery
System
Integrated Audio Module (IAM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
7 modelsS60 (2011–), S80 (2007–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
The DC voltage on the signal wire to auxiliary input 2 (AUX2) is too high, according to the IAM unit. The signal wire has a short circuit to voltage, and the AUX panel does not work.
Possible causes
- The signal wire is short-circuited to voltage
What you can do
- 1Check that the fuses for the AUX panel are intact
- 2Check that the connectors at the AUX panel and the module are secure and free of oxide, with the ignition off
- 3Look for chafing on the signal wire to AUX2 and at spots where it may have touched another wire
- 4Use a multimeter to check that the signal wire to AUX2 has no contact with voltage
- 5After the work, clear the fault code and check that the AUX panel works
Symptoms you may notice1
- The AUX panel does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.