B2961

DTC B2961

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.

DTC Descriptors
DTC B2961 02
- Key In Ignition Circuit Short to Ground

Diagnostic Fault Information





Circuit/System Description

The remote control door lock receiver (RCDLR) monitors the key in ignition switch signal circuit as a means of initiating transmitter authentication. When the ignition control knob is pressed, the key in ignition switch (part of the ignition switch assembly) is closed. This grounds the key in ignition switch signal circuit and the RCDLR will being the transmitter authentication process.

If a fault exists on the key in ignition switch signal circuit or within the switch itself, transmitter authentication will not initiate when pressing the ignition control knob. Instead, transmitter authentication will only occur when depressing the brake pedal.

Conditions for Running the DTC

Ignition OFF.

Conditions for Setting the DTC

The RCDLR detects the key in ignition circuit is active for greater than 3 minutes.

Action Taken When the DTC Sets

The key in ignition input is ignored.

Conditions for Clearing the DTC

* A current DTC will clear when the condition for setting the DTC is no longer present.
* A history DTC will clear after 40 malfunction-free ignition cycles.

Reference Information
Schematic Reference

Shift Lock Control Schematics ([1][2]Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Automatic Transmission Shift Lock Control Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

Ignition ON, observe the scan tool RCDLR Authentication Switch parameter. The parameter should be Active only when the ignition switch knob is pressed.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the ignition switch.
2. Verify the scan tool Authentication Switch parameter is Inactive.

• If not the specified value, test the signal circuit terminal 5 for a short to voltage. If the circuit tests normal, replace the RCDLR.

3. Install a 3A fused jumper wire between the signal circuit terminal 5 and B+. Verify the scan tool Authentication Switch parameter is Active.

• If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the RCDLR.

4. If all circuits tests normal, test or replace the ignition switch.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Ignition and Start Switch Replacement (Ignition and Start Switch Replacement)
* Control Module References (Programming and Relearning) for RCDLR replacement, setup, and programming