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 provides an overview of each diagnostic category. |
DTC Descriptor
DTC B2516 02: Driver Exterior Lock Switch Circuit Short to GroundDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Driver Exterior Door Lock Switch Signal | B2516 02 | 1 | 1 | -- |
Driver Door Unlatch High Control | 2 | 2 | Beau 01 | -- |
Driver Door Unlatch Low Control | Beau 02 | 2 | Beau 01 | -- |
1. Door Lock Malfunction 2. Door Latch Malfunction | ||||
Circuit/System Description
The driver exterior door lock switch signal circuit provides inputs to the remote control door lock receiver when the driver exterior door handle switch is activated. This input allows the remote control door lock receiver to detect a door open request. The remote control door lock receiver provides voltage to the driver front exterior door handle switch via the driver exterior door lock switch signal circuit. When the driver front door handle is activated, the switch closes and the voltage signals from the remote control door lock receiver are pulled to ground.
Conditions for Running the DTC
Battery voltage is between 9-16 V.
Conditions for Setting the DTC
The remote control door lock receiver detects a short to ground in the driver exterior lock switch signal circuit.
Action Taken When the DTC Sets
The remote control door lock receiver ignores inputs from the driver exterior door handle switch.
Conditions for Clearing the DTC
| • | The condition responsible for setting the DTC no longer exists. |
| • | A history DTC will clear once 40 consecutive malfunction free ignition cycles have occurred. |
Reference Information
Schematic Reference
Door Lock/Indicator Schematics
Connector End View Reference
Description and Operation
Power Door Locks Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Ignition ON, observe the scan tool Exterior Driver. Door Handle Switch parameter while using the driver door handle. The parameter should change between Active and Inactive.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the B27D Door Handle Switch - Driver Exterior.
- Ignition ON, verify the scan tool Exterior Driver Door Handle Switch parameter is Inactive.
- Connect the a 3 A jumper harness between the signal circuit terminal 2 and ground. Verify the scan tool Exterior Driver Door Handle Switch parameter is Active.
- If all circuits test normal, test or replace the B27D Door Handle Switch - Driver Exterior.
| ⇒ | If not the specified value, test the signal circuit terminal 2 for a short to ground. If the circuit tests normal, replace the K77 Remote Control Door Lock Receiver. |
| ⇒ | If not the specified value, test the signal circuit terminal 2 for a open/high resistance. If the circuit tests normal, replace the K77 Remote Control Door Lock Receiver. |
Component Testing
- Ignition OFF, disconnect the harness connector at the B27D Door Handle Switch - Driver Exterior.
- With the switch in the open position, test for infinite resistance between the signal terminal 2 and the ground terminal 1.
- With the switch in the closed position, test for less than 1 Ω between the signal terminal 2 and the ground terminal 1
| ⇒ | If not the specified value, replace the B27D Door Handle Switch - Driver Exterior. |
| ⇒ | If greater than the specified range, replace the B27D Door Handle Switch - Driver Exterior. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for remote control door lock receiver replacement, setup, and programming |
