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
If the control module registers that the siren control module is transmitting a signal indicating that the siren battery voltage level has sunk under 6.0 V when: the siren is powered up or the alarm is activated/deactivated, then diagnostic trouble code (DTC) GLA-321 is stored.
Substitute Value
None.
Possible Source
- Battery voltage too low due to insufficient charging or poor battery.
- Open-circuit or short-circuit to ground in siren communication cable.
- Open-circuit in siren power supply or ground lead.
Fault symptom[s]
- The indicator LED flashes for 15 seconds when the ignition is switched on.
- When the alarm is activated the internal battery takes over power supply and the siren sounds for 30 seconds.