2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 567
DTC B2516
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC B2516 00
- Driver Exterior Lock Sensor Malfunction
Diagnostic Fault Information
Circuit/System Description
The exterior driver door handle contains a small sensor which allows the driver to lock the vehicle doors from the outside without using the remote
keyless transmitter. The keyless entry control module monitors the voltage level on the driver door handle switch signal circuit, when the switch is
pressed, the voltage in the signal circuit will drop and the keyless entry control module will then send a serial data message to the BCM to
command all the doors to lock.
Conditions for Running the DTC
Battery voltage is between 9-16 V.
Conditions for Setting the DTC
The keyless entry control module detects the driver door lock switch signal circuit is shorted to ground for greater than 45 seconds.
Action Taken When the DTC Sets
The keyless entry control module ignores inputs from the left front exterior door handle switch.
Conditions for Clearing the DTC
* The DTC will be current for as long as the fault is present.
* When the fault is no longer present, the DTC will be a history DTC.
* A history DTC will clear after 50 ignition cycles.
Reference Information
Schematic Reference
Remote Function Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Keyless Entry/Keyless Entry
Transmitter/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
Power Door Latch Description and Operation (See: Body and Frame/Locks/Description and Operation)
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
