Intrusion Sensor Malfunction

Intrusion Sensor Malfunction

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category

Circuit/System Description

When the Content Theft Deterrent (CTD) system arms and enables the intrusion sensor, the body control module (BCM) receives a power-up acknowledgement from the intrusion sensor via the intrusion sensor armed signal circuit.

Reference Information
Schematic Reference

Theft Deterrent System Schematics (Theft Deterrent System Schematics)
Connector End View Reference

Component Connector End Views (Connector End Views By Name)
Description and Operation

Content Theft Deterrent (CTD) Description and Operation (Content Theft Deterrent (CTD))
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Refer to Control Module References (Programming and Relearning) for Scan Tool Information

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the intrusion sensor.
2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal A and ground.

• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

3. Ignition OFF, disconnect the X7 harness connector at the BCM.
4. Ignition ON, test for less than 1 volt between the following signal circuit terminals and ground:

* Terminal 12
* Terminal 15

• If greater than the specified range, test the signal circuit for a short to ground.

5. Test for infinite resistance between the following signal circuit terminals and ground:

* Terminal 12
* Terminal 15

• If less than the specified value, test the signal circuit for a short to ground.

6. Test for less than 2 ohms of resistance between the following signal circuit terminals:

* Terminal 12 at the BCM and terminal B at the intrusion sensor
* Terminal 15 at the BCM and terminal C at the intrusion sensor

• If greater than the specified range, test the signal circuit for an open/high resistance.

7. If all circuits test normal, test or replace the intrusion sensor. If the DTC resets, replace the BCM.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Theft Deterrent Sensor Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for BCM replacement, setup, and programming