Air Bag Control Module: Diagrams
Fault codes can be extracted in one of two ways:^ Through the ISO Communication Bus using Jaguar Diagnostic equipment.
^ As a series of flashes using the Airbag/SRS Service Tool.
Each series off flashes represents a two digit number, representing the fault code. For example fault code 24 is displayed as:
^ Two flashes, a one second pause, four flashes, three second pause. Then repeated.
All fault codes are listed in order of priority.
Code Component/Fault Description
- No MIL Lamp - Inoperative lamp circuit or no ignition voltage to Air Bag Diagnostic Module (DM)
- Continuous MIL Lamp - DM disconnected or inoperative
12 Low battery voltage
13 Airbag circuit shorted to ground
14 Front impact sensor circuit shorted to ground
21 Safing impact sensor incorrectly mounted to vehicle
22 Safing impact sensor output circuit shorted to battery voltage
23 Safing impact sensor input feed/return open circuit
24 Safing impact sensor output feed/return open circuit
32 Driver-side airbag circuit high resistance or open
33 Passenger-side airbag circuit high resistance or open
34 Driver-side airbag circuit low resistance or short circuit
35 Passenger-side airbag circuit low resistance or short circuit
41 Front right impact sensor feed/return open circuit
42 Front left impact sensor feed/return open circuit
44 Front right impact sensor incorrectly mounted to vehicle
45 Front left impact sensor incorrectly mounted to vehicle
51 DM internal thermal fuse - intermittent short to ground
52 Back-up power supply - voltage boost fault
53 Front impact sensor circuits resistance to ground or internal DM failure
- Rapid continuous flashing of MIL Lamp (no fault code) - All front impact sensors disconnected
Pin Number And Circuit Identification, Fig.1:
Pin No. Circuit Identification
1. Ignition Supply
2. LH Impact Sensor Monitor
3. Ground Input
4. Instrument Pack Interface - MIL Lamp
5. Ground
6. RH Impact Sensor Monitor
7. Not Used (Driver's only input)
8. Passenger airbag Module Feed
9. Passenger airbag Module Return
10. Driver airbag Module Return
11. Driver airbag Module Feed
12. Safing Sensor Output
13. Battery Input
14. Not Used
15. Safing Sensor Input
16. Safing Sensor Ground Monitor
17. LH Impact Sensor Feed
18. RH Impact Sensor Feed
19. Not Used
20. LH Impact Sensor Ground Monitor
21. RH Impact Sensor Ground Monitor
22. Not Used
23. Safing Sensor Feed
24. Test Input