Schematic Reference: Shift Lock Control Schematics

Connector End View Reference: Shift Lock Control Connector End Views , Body Control System Connector End Views or Automatic Transmission Related Connector End Views

DEFINITION: Transmission shift lever does move out of the PARK position with the ignition ON and the brake pedal pressed.

Did you perform the Auto Trans Shift Lock Control System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Automatic Transmission Shift Lock Control

1. Apply the parking brake and block the wheels.
2. Turn ON the ignition, with the engine OFF.
3. 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 in Wiring Systems

Go to Step 3

1. Turn OFF the ignition.
2. Install a scan tool.
3. Turn ON the ignition, with the engine OFF.
4. With a scan tool, observe the TCC brake switch parameter in the transmission data display list.
5. Press and release the brake pedal several times.

Does the TCC brake switch status turn ON and OFF with the brake pedal?

Go to Step 4

Go to Stop Lamps Inoperative in Lighting Systems

1. With a scan tool, observe the brake to shift control parameter in the rear integration module data list.
2. Press and release the brake pedal several times.

Does the brake to shift control status turn ON and OFF with the brake pedal?

Go to Step 5

Go to Step 8

1. Turn OFF the ignition.
2. Connect a test lamp between the automatic transmission shift lock control solenoid supply voltage circuit and the automatic transmission shift lock control solenoid control circuit at the automatic transmission shift lock control solenoid.
3. Turn ON the ignition, with the engine OFF.
4. With a scan tool, command the brake to shift control ON and OFF several times while observing the test lamp.

Does the test lamp turn ON and OFF with each command?

Go to Step 7

Go to Step 6

Test the automatic transmission shift lock control solenoid control circuit for and open or short to battery voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 11

Go to Step 8

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

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 rear integration module (RIM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

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 Automatic Transmission Shift Lock Control Actuator Replacement .

Did you complete the replacement?

Go to Step 11

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Replace the engine control module (ECM). Refer to Engine Control Module Replacement in Engine Controls.

Did you complete the replacement?

Go to Step 11

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Operate the system in order to verify the repair.

Did you find and correct the condition?

System OK

Go to Step 2