Schematic Reference: Shift Lock Control Schematics

Connector End View Reference: Inline Harness Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

1. Turn ON the ignition, with the engine OFF.
2. Apply the parking brake and block the wheels.
3. Press and hold the brake pedal.
4. Attempt to move the shift lever out of the PARK position.

Does the shift lever move out of the PARK position?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

1. Turn OFF the ignition.
2. Install a scan tool.
3. Turn ON the ignition, with the engine OFF.
4. Press and release the brake pedal several times while observing the Shift Lock Solenoid Command parameter in the body control module (BCM) output data list.

Does the scan tool display Unlock and Lock status?

Go to Step 4

Go to Step 6

1. Turn OFF the ignition.
2. Disconnect the electrical connector of the automatic transmission shift lock control solenoid.
3. Turn ON the ignition, with the engine OFF.
4. Press and hold the brake pedal.
5. Attempt to move the shift lever out of the PARK position.

Does the shift lever move out of the PARK position?

Go to Step 5

Go to Step 7

Test the control circuit of the automatic transmission shift lock control solenoid for a short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 11

Go to Step 8

Press and release the brake pedal several times while observing the Stoplamp Pedal Switch parameter in the engine control module (ECM) data list.

Does the Scan tool display Applied and Released status of the input parameter?

Go to Step 8

Go to Stop Lamps Inoperative

Inspect for poor connections at the harness connector of the automatic transmission shift lock control solenoid. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 11

Go to Step 9

Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 11

Go to Step 10

Replace the automatic transmission shift lock control solenoid. Refer to Transmission Control Replacement .

Did you complete the replacement?

Go to Step 11

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Replace the BCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 11

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1. Use the scan tool in order to clear the DTCs .
2. Operate the vehicle within the Conditions for Running the DTC, as specified in the supporting text.

Does the DTC reset?

Go to Step 2

System OK