Diagnostic trouble code (DTC) information
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.
Condition
Diagnostic trouble code (DTC) GLA-311 is stored after approximately 2 seconds if the control module registers an error in communication with the siren control module when the alarm system is powered up or when the alarm is activated or deactivated.
Substitute Value
None.
Possible Source
- Short-circuit to ground or voltage in communication cable.
- Open-circuit in communication cable.
- Interference affecting communication cable.
- Defective siren.
Fault symptom[s]
- The indicator LED flashes for 15 seconds when the ignition is switched on.
- The siren will not then work when the panic button is pressed on the remote control.
- No siren sound when the alarm is activated.