DTC B2955
DTC B2955 |
Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
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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 |
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The ignition is OFF.
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The vehicle is in Park.
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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 |
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A current DTC will clear when the conditions for setting the DTC are no longer present.
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A history DTC will clear after 40 malfunction-free ignition cycles.
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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
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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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.
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2. |
Test for less than 12 Ω between the ground circuit terminal 5 and ground.
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3. |
If greater than the specified range, test the ground circuit for an open/high resistance.
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4. |
Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 3 and ground.
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5. |
If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
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6. |
Disconnect the X6 harness connector at the K9 Body Control Module.
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7. |
Test for less than 1 V between the serial data circuit terminal 16 and ground.
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8. |
If greater than the specified range, test the serial data circuit for a short to voltage.
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9. |
Ignition OFF, test for infinite resistance between the serial data circuit terminal 16 and ground.
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10. |
If not the specified value, test the serial data circuit for a short to ground.
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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.
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12. |
If greater than the specified range, test the serial data circuit for an open/high resistance.
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13. |
If all circuits test normal, replace the K38 Intrusion Sensor Module. If the DTC resets, replace the K9 Body Control Module.
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Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
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Theft Deterrent Sensor Replacement
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Control Module References
for control module replacement, setup and programming
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