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 has overviews of all diagnostic categories.

DTC Descriptor

DTC B2516 00

Driver Exterior Lock Switch Circuit Malfunction

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Driver Door Handle Lock Switch Signal	B2516 00	1	1	-
Driver Door Handle Lock Switch Ground	-	1	-	-
1. Door Handle Lock Switch Malfunction

Circuit/System Description

The driver exterior lock switch signal circuit provides input to the keyless entry control module when the left front exterior door handle switch is activated. This input allows the keyless entry control module to detect a door lock request upon exit of the vehicle. The keyless entry control module provides voltage to the driver door lock switch via the driver door lock switch signal circuit. When the driver door lock is activated, the switch closes and the voltage signals from the keyless entry control module are pulled to ground.

Conditions for Running the DTC

Battery voltage is between 9-16 V.

Conditions for Setting the DTC

The keyless entry control module detects a short to ground on the signal circuit.

Action Taken When the DTC Sets

The keyless entry control module ignores inputs from the driver exterior door handle switch.

Conditions for Clearing the DTC

•	This 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

Door Lock/Indicator Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Power Door Latch 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 information on diagnostic tools

Circuit/System Verification

Ignition ON, observe the scan tool keyless entry control module Exterior Driver Door Handle Proximity Sensor parameter while using the driver door handle. The parameter should change between Active and Inactive.

Circuit/System Testing

1.	Ignition OFF, disconnect the harness connector at the T10M Keyless Entry Antenna - Driver Door Handle.

2.	Ignition ON, verify the scan tool Exterior Driver Door Handle Proximity Sensor parameter is Inactive.

3.	If not the specified value, test the signal circuit terminal 3 for a short to ground. If the circuit tests normal replace the K84 Keyless Entry Control Module.

4.	Connect the a 3 A jumper harness between the signal circuit terminal 3 and ground. Verify the scan tool Exterior Driver Door Handle Proximity Sensor parameter is Active.

5.	If not the specified value, test the signal circuit terminal 3 for an open/high resistance. If the circuit tests normal replace the K84 Keyless Entry Control Module.

6.	If all circuits test normal, test or replace the T10M Keyless Entry Antenna - Driver Door Handle.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

•	Front Side Door Outside Handle Replacement (Base)

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