2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 321
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.
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 is cleared 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 (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Electrical Diagrams/Theft
Deterrent System Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
Content Theft Deterrent (CTD) Description and Operation (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Description
and Operation/Content Theft Deterrent (CTD))
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Verify that DTC B291B 39 or B291B 42 is not set.
If the DTC is set, program the K9 BCM. If the DTC resets, replace the B67 ultrasonic intrusion sensor.
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.
瀚慖f 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.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
