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 B2710 02: Gearshift Unlock Circuit Short to GroundDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Shift Lock Control Solenoid B+ | B2710 02 | B2710 02 | -- | -- |
Shift Lock Control Solenoid Control | B2710 02 | B2710 02 | B2710 01 | -- |
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 seconds 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 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
Connector End View Reference
Description and Operation
Automatic Transmission Shift Lock Control Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- 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.
- Press the brake pedal, the vehicle operator should be able to move the shifter lever out of the PARK position.
| ⇒ | If the parameter does not change, refer to Stop Lamps Malfunction. |
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the shift lock control solenoid.
- Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 5 and ground.
- Install a test lamp between the B+ circuit terminal 5 and control circuit terminal 8.
- Ignition ON, depress and release the brake pedal several times. The test lamp should turn ON and OFF as commanded.
- If all circuits test normal, test or replace the shift lock control solenoid.
| ⇒ | If the test lamp does not illuminate , test the B+ circuit for a short to ground or open/high resistance. If the circuit tests normal, test or replace the shift lock control solenoid. |
| ⇒ | 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 or short to voltage. If the circuit test normal, replace the RCDLR. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for RCDLR replacement, setup, and programming |
