Schematic Reference: Shift Lock Control Schematics

DEFINITION: Reverse shift lock control inoperative or always ON.

Did you perform A Diagnostic System Check - Automatic Transmission Shift Lock Control System?

Go to Step 2

Go to Diagnostic System Check - Automatic Transmission Shift Lock Control

1. Turn ON the ignition, with the engine OFF.
2. Press and hold the brake pedal.

Does the shift lever move to the REVERSE position?

Go to Step 6

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 reverse lockout drive parameter in the dash integration module (DIM) output display data list.

Does the scan tool display an OFF status?

Go to Step 4

Go to Step 11

1. Turn OFF the ignition.
2. Disconnect the reverse lockout solenoid.
3. Turn ON the ignition, with the engine OFF.
4. Press and hold the brake pedal.
5. Move the shift lever to the NEUTRAL position.
6. Attempt to move the shift lever to the REVERSE position.

Does the shift lever move to the REVERSE position?

Go to Step 5

Go to Step 10

Test the reverse lockout solenoid control circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 11

1. With a scan tool, command the reverse lockout drive parameter ON in the dash integration module special functions output control data list.
2. Press and hold the brake pedal.
3. Move the shift lever to the NEUTRAL position.
4. Attempt to move the shift lever to the PARK position.

Does the shift lever move to the REVERSE position?

Go to Step 7

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

1. Turn OFF the ignition.
2. Disconnect the reverse lockout solenoid.
3. connect a test lamp between the reverse lockout solenoid supply voltage circuit at the reverse lockout solenoid connector and a good ground.
4. Turn ON the ignition, with the engine OFF.

Does the test lamp illuminate?

Go to Step 8

Go to Step 12

1. Turn OFF the ignition.
2. Connect a test lamp between the reverse lockout solenoid voltage supply circuit and the reverse lockout solenoid control circuit at the reverse lockout relay connector.
3. Turn ON the ignition, with the engine OFF.
4. With a scan tool, command the reverse lockout drive ON and OFF several times.

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

Go to Step 10

Go to Step 9

Test for an open or short to battery voltage in the reverse lockout solenoid control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 11

Inspect for poor connections at the reverse lockout 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 15

Go to Step 13

Inspect for poor connections at the dash integration module (DIM). 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 15

Go to Step 14

Repair the open in the reverse lockout solenoid supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 15

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Replace the reverse lockout solenoid. Refer to Automatic Transmission Shift Lock Actuator Replacement .

Did you complete the replacement

Go to Step 15

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Replace the dash integration module (DIM). Refer to Dash Integration Module Replacement in Body Control System.

Did you complete the replacement?

Go to Step 15

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Operate the vehicle within the Conditions for Running the symptom.

Did you find and correct the condition?

System OK

Go to Step 2