B2710
DTC B2710
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 B2710 02
- Gearshift Unlock Circuit Short to Ground
Diagnostic Fault Information
Circuit/System Description
The remote control door lock receiver (RCDLR) controls the automatic transmission shift lock solenoid by providing a ground for the solenoid. The RCDLR utilizes a smart driver to control the ground to the automatic transmission shift lock solenoid. The smart driver monitors the voltage and current flow of the control circuit.
Conditions for Running the DTC
* The ignition switch is in the ON position.
* The brake pedal is pressed.
* The transmission is in the PARK position.
Conditions for Setting the DTC
The RCDLR will set the code if the voltage level at the shift lock control output is greater than 8 volts for more than 0.375 second while the output is active.
Action Taken When the DTC Sets
The RCDLR will not attempt to ground the control circuit of the automatic transmission shift lock solenoid until the next key cycle.
Conditions for Clearing the DTC
* A current DTC B2710 will clear when the malfunction is no longer present and the ignition switch is cycled.
* All RCDLR history codes will clear after 100 ignition cycles with no current codes active during the 100 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
1. Ignition ON, Clear the DTC. Observe the scan tool RCDLR Shift Lock Solenoid Command parameter. The parameter should change from UNLOCK to LOCK when the brake pedal is depressed and released.
• If the parameter does not change, refer to Stop Lamps Malfunction (Stop Lamps Malfunction) .
2. Ignition ON, observe the scan tool RCDLR Shift Lock Solenoid State parameter. The parameter should change from UNLOCK to LOCK OFF when the brake pedal is depressed and released.
• If the parameter does not change, replace the RCDLR.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the shift lock control solenoid.
2. Ignition ON, test between the Ignition voltage circuit terminal E and ground.
• If the test lamp did not illuminate , test the Ignition voltage circuit for a short to ground or an open/high resistance.
3. Install a test lamp between circuit terminal E and the control circuit terminal K.
4. Ignition ON, depress and release the brake pedal several times. The test lamp should turn ON and OFF as commanded.
• If the test lamp is always ON, test the control circuit for short to ground.If the circuit tests normal, replace the RCDLR.
• If the test lamp is always OFF, test the control circuit for an open/high resistance.If the circuit test normal, replace the RCDLR.
5. If the circuit tests normal, replace the shift lock control solenoid.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Transmission Control Replacement (Transmission Control Replacement)
* Control Module References (Programming and Relearning) for RCDLR replacement, setup, and programming