B2707

DTC B2707

Circuit Description

The body control module (BCM) controls the automatic transmission shift lock control solenoid by providing controlled battery voltage to the automatic transmission shift lock control solenoid. The BCM utilizes a smart driver to monitor the voltage and current flow of the automatic transmission shift lock control solenoid control circuit. DTC B2707 will set when the BCM detects a short to ground or open circuit when the solenoid is in the ON state.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC B2707 Gearshift Unlock Circuit Low

Conditions for Running the DTC

* The ignition switch is in the ON position.
* The brake pedal is released.
* The transmission is in the PARK position.

Conditions for Setting the DTC

The BCM detects the control circuit of the shift lock control solenoid is grounded or opened for a minimum of 1 second.

Action Taken When the DTC Sets

The BCM disables shift lock control solenoid operation until the next key cycle.

Conditions for Clearing the DTC

* A current DTC B2707 will clear when the malfunction is no longer present and the ignition switch is cycled.
* All BCM history codes will clear after 100 ignition cycles with no current codes active during the 100 ignition cycles.

Diagnostic Aids

* If the control circuit of the automatic transmission shift lock solenoid is opened or shorted to ground the shift lever will not lock in the PARK position.
* Perform the tests while wiggling the wires and connectors. This may often cause an intermittent malfunction to appear. Refer to Testing for Intermittent Conditions and Poor Connections in Diagnostic Aids in Diagnostic Aids. Component Tests and General Diagnostics

Test Description

The numbers below refer to the step numbers on the diagnostic table.
2. Listen for an audible click when the automatic transmission shift lock control solenoid operates. Command both the ON and OFF states. Repeat the commands as necessary.
4. This step tests for ground at the control circuit of the automatic transmission shift lock control solenoid.

Step 1 - Step 10:

Step 11: