2010 Cadillac Truck SRX FWD V6-3.0L Page 567

2010 Cadillac Truck SRX FWD V6-3.0L 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