VOLVO
SRS-0078 - Rear center seat belt tensioner. Signal too high. Intermittent fault
System
Supplemental Restraint System (SRS)
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:
5 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
What does this fault code mean?
This code applies to the centre rear seat belt tensioner. The fault is intermittent. The SRS control module reacts when the voltage in the wiring circuit stays too high for a while.
Possible causes
- The connector is shorted to supply voltage
- The signal wire between the centre rear tensioner and the SRS control module is shorted to supply voltage
- The centre rear tensioner itself is shorted to supply voltage
What you can do
- 1Read off the fault code, clear it and road test the car to see whether it comes back
- 2Have a workshop check the connectors at both ends for oxidation and contact resistance
- 3Have a workshop look for an intermittent short to supply voltage in the signal wire to the centre rear tensioner, and repair what is found
- 4Do not work on the airbag system or the seat belt tensioners yourself; leave the checks to a workshop
Symptoms you may notice1
- General orange warning lamp on
General guidance for car owners. Diagnosis on the car can point to a different cause.