Inclination/Intrusion Sensor Malfunction

Inclination/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

The content theft deterrent intrusion/inclination sensor is a multifunction sensor which detects motion inside the vehicle (intrusion), as well as change in the vehicle level (inclination). The intrusion/inclination sensor is supplied power and ground for operation and communicates with the body control module (BCM) via a dedicated LAN circuit. The sensor may be turned on or off using the disable switch and will display its status through the status LED.

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

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the S43 ultrasonic intrusion sensor disable switch.
2. Test for less than 10ohm between the ground circuit terminal 2 and ground.

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

3. Ignition OFF, connect the harness connector at the S43 ultrasonic intrusion sensor disable switch. Disconnect the harness connector at the B67 ultrasonic intrusion sensor.
4. Test for less than 10ohm between the ground circuit terminal 5 and ground.

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

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

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

6. Test for less than 1V between the signal circuit terminal 1 and ground.

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

7. Ignition OFF, test for infinite resistance between the signal circuit terminal 1 and ground.

• If not the specified value, test the signal circuit for a short to ground. If the circuit tests normal, test or replace the S43 ultrasonic intrusion sensor disable switch.

8. Content theft disable switch closed, test for less than 10ohm between the signal circuit terminal 1 and ground.

• If greater than the specified range, test the signal circuit for an open/high resistance. If the circuit tests normal, test or replace the S43 ultrasonic intrusion sensor disable switch.

9. Ignition ON, verify the content theft disable indicator is not illuminated.

• If the indicator is illuminated, test the control circuit terminal 2 for a short to voltage.

10. Install a 3A fused jumper wire between the control circuit terminal 2 and B+. Verify the content theft disable indicator is illuminated.

• If the indicator is not illuminated, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the S43 ultrasonic intrusion sensor disable switch.

11. Disconnect the X6 harness connector at the K9 BCM.
12. Test for less than 1V between the serial data circuit terminal 16 and ground.

• If greater than the specified range, test the serial data circuit for a short to voltage.

13. Ignition OFF, test for infinite resistance between the serial data circuit terminal 16 and ground.

• If not the specified value, test the serial data circuit for a short to ground.

14. Test for less than 2ohm between the serial data circuit terminal 16 at the K9 BCM harness connector X6 and the serial data circuit terminal 4 at the B67 ultrasonic intrusion sensor harness connector.

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

15. If all circuits test normal, replace the B67 ultrasonic intrusion sensor.

Repair Instructions

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

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