Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




If the control module registers that communication with the glass breakage sensor own control module is faulty when: The alarm system is voltage charged or the alarm activated or deactivated Diagnostic trouble code (DTC) GLA-421 is stored after approximately 2 seconds.

Substitute value
None.

Possible source
- Short-circuit to ground or voltage in communication cable.
- Open-circuit in communication cable.
- Interference affecting communication cable.
- Defective glass breakage sensor.

Fault symptom[s]
- The indicator LED in the sun sensor flashes for 15 seconds when the ignition is switched on.
- The system will not trigger the alarm if there is glass breakage in the passenger compartment