Diagnostic Instructions

•	Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC B2955 00

Security Sensor Data Circuit Malfunction

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 CAN-bus circuit. The sensor may be turned on or off using the disable switch and will display its status through the status LED.

Conditions for Running the DTC

•	The ignition is OFF.

•	The vehicle is in Park.

Conditions for Setting the DTC

The BCM detects a malfunction within the content theft sensor.

Action Taken When the DTC Sets

The intrusion and inclination output is disabled

Conditions for Clearing the DTC

•	A current DTC will clear when the conditions for setting the DTC are no longer present.

•	A history DTC will clear after 40 malfunction-free ignition cycles.

Reference Information

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

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

1.	Ignition OFF, disconnect the harness connector at the K38 Intrusion Sensor Module.

2.	Test for less than 12 Ω between the ground circuit terminal 5 and ground.

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

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

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

6.	Disconnect the X6 harness connector at the K9 Body Control Module.

7.	Test for less than 1 V between the serial data circuit terminal 16 and ground.

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

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

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

11.	Test for less than 5 Ω between the serial data circuit terminal 16 at the K9 Body Control Module. harness connector X6 and the serial data circuit terminal 4 at the K38 Intrusion Sensor Module harness connector.

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

13.	If all circuits test normal, replace the K38 Intrusion Sensor Module. If the DTC resets, replace the K9 Body Control Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

•	Theft Deterrent Sensor Replacement

•	Control Module References for control module replacement, setup and programming