The alarm siren monitors the alarm enable signal circuit and will sound an audible alarm when the rear integration module (RIM) indicates a event has occurred that requires and alarm. The alarm siren also monitors its own voltage circuits independent of the RIM. In the event of the interruption of voltage to the alarm siren, the alarm will sound.

Schematic Reference

Theft Deterrent System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Content Theft Deterrent (CTD) Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

1. Ignition OFF, disconnect the harness connector at the theft deterrent alarm siren.
2. Ignition OFF, test for less then 10 ohms between the ground circuit terminal 4 and ground.

⇒	If not within the specified range, test the low reference circuit for an open/high resistance.

3. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 2 and ground.

⇒	If not the specified range, test the circuit for a short to ground or an open/high resistance.

4. Verify a test lamp illuminates between the ignition circuit terminal 1 and ground.

⇒	If not the specified range, test the circuit for a short to ground or an open/high resistance.

5. Connect a test lamp between the control circuit terminal 3 and the B+ circuit terminal 2.
6. Command the theft deterrent alarm ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.

⇒	If the test lamp is always ON, test the signal circuit for a short to ground. If the circuit tests normal, replace the RIM.

⇒	If the test lamp is always OFF, test the signal circuit for a short to voltage, or an open/high resistance. If the circuit tests normal, replace the RIM.

7. If all circuits test normal, replace the theft deterrent alarm siren.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.