Antitheft and Alarm System

Fault symptom
The theft alarm is not working at all Unspecified (due to an internal memory fault/programming fault, different functions can be affected)

Conditions
Electronic control module fault (internal) generates diagnostic trouble code

Action
1 Check if a diagnostic trouble code is registered
Erase the diagnostic trouble code, test drive the car and check to see if the diagnostic trouble code is re-registered.
If the diagnostic trouble code is registered, proceed to point 2.
If the diagnostic trouble code is not registered, the fault is intermittent.

2 Check the theft alarm control module connector
Remove the control module.
- Check the connector for loose connector sleeves.
- Check the control module ground and voltage supply:
pin 25 (+ 30)
pin 10 (+ 15)
pin 13 (GND)
Refit the control module, proceed to point 3.

3 Check if a diagnostic trouble code is registered
Erase the diagnostic trouble code, test drive the car and check to see if the diagnostic trouble code is re-registered.
If the diagnostic trouble code is registered, proceed to Handling Electronic Control Module.
If the diagnostic trouble code is not registered, the action taken is correct or the fault is intermittent.