For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
1 | Did you review the Automatic Transmission Shift Lock Control Circuit Description and the Automatic Transmission Shift Lock Control Description ? | Go to Step 2 | Go to Automatic Transmission Shift Lock Control System Check
2 |

1. Turn the ignition switch to the ON position.
2. Attempt to move the manual selector from the P position.

Can you move the manual selector from the P position?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections

3 | Disconnect the shift lock relay. Does the shift lock solenoid disengage? | Go to Step 4 | Go to Step 7
4 | Test for a short to voltage in the GRN/WHT wire between the shift lock relay connector cavity 3 and S213. Is a short to voltage present? | Go to Step 6 | Go to Step 5
5 | Replace the shift lock relay. Is the repair complete? | Go to Step 10 | --
6 | Repair the short to voltage in the GRN/WHT wire between the shift lock relay connector cavity 3 and S213. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to Step 10 | --
7 | Test for a short to voltage in the BLU/GRN wire between the shift lock relay connector cavity 1 and the shift lock solenoid. Is a short to voltage present? | Go to Step 8 | Go to Step 9
8 | Repair the short to voltage in the BLU/GRN wire between the shift lock relay connector cavity 1 and the shift lock solenoid. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to Step 10 | --
9 | Replace the shift lock solenoid. Refer to Brake Transmission Shift Interlock Solenoid Replacement in Automatic Transmission. Is the repair complete? | Go to Step 10 | --
10 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3