B1A3D

B1A3D-SIREN BATTERY TAMPER / LOSS OF POWER SUPPLY





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
Continuously with the Vehicle Theft and Security System (VTSS) armed.

- Set Condition:
If the Intrusion Transceiver Module (ITM) detects incorrect voltage at the Siren this code sets.





1. INSPECT SIREN HARNESS
1. Inspect the wiring harness to the Siren for any signs of tampering or intermittent condition.

Were there any problems found?

Yes

- Repair wiring as necessary.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 2

2. CHECK FOR AN ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
1. Turn the ignition off and remove the key from the ignition.
2. Lock and close all doors to allow the VTSS to go from pre-arm to armed status and wait one minute.
3. Disarm the VTSS.
4. With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 3

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.

3. CHECK THE (A911) FUSED B(+) CIRCUIT AT THE SIREN




1. Turn the ignition off.
2. Disconnect the Siren harness connector.
3. Using a 12-volt test light connected to ground, check the (A911) Fused B(+) circuit at the Siren harness connector.

Does the test light illuminate brightly?

Yes

- Go To 4

No

- Repair the open in the (A911) Fused B(+) circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. CHECK THE (Z901) GROUND CIRCUIT AT THE SIREN




1. Using a 12-volt test light connected to 12-volts, check the (Z901) Ground circuit at the Siren harness connector.

Does the test light illuminate brightly?

Yes

- Replace the Siren. Vehicle Theft Security Siren - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the open in the (Z901) Ground circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.