B1A3D-SIREN BATTERY TAMPER / LOSS OF POWER SUPPLY
For a complete wiring diagram Refer to Section 8W.
- When Monitored:
Continuously with the VTSS armed.
- Set Condition:
If the ITM detects incorrect voltage at the siren this code will set.
| Possible Causes |
| HARNESS TAMPERING/INTERMITTENT CONDITION |
| SIREN GROUND OPEN |
| SIREN |
Diagnostic Test
1.Were there any problems found?
Yes
- Repair wiring as necessary.
- Perform BODY VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
No
- Go To 2
2.DETERMINING IF DTC IS CURRENT
Does the DTC reset?
Yes
- Go To3
No
- DTC is not active at this time. Test complete.
- Perform BODY VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
3.CHECK THE FUSED B(+) CIRCUIT AT THE SIREN
Does the test light illuminate brightly?
Yes
4
No
- Repair the Fused B(+) circuit for an open.
- Perform BODY VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
4.CHECK THE GROUND CIRCUIT AT THE SIREN
Does the test light illuminate brightly?
Yes
- Replace the Siren in accordance with the Service Information.
- Perform BODY VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
No
- Repair the Ground circuit for an open.
- Perform BODY VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)