For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Shift Lock Control Schematics
1 |

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

Does the shift lever move out of the PARK position?

System OK

Go to Step 2

2 |

1. Turn the ignition OFF.
2. Disconnect the brake switch.
3. Turn the ignition ON, 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 4

Go to Step 3

3 |

1. Turn the ignition OFF.
2. Disconnect the BTSI (Brake Transfer Shift Interlock) solenoid.
3. Turn the ignition ON, 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 6

Go to Step 5

4 |

1. Inspect for poor connections at the brake switch.
2. Check for the short to battery in the brake switch supply voltage circuit.

Do you find and correct the condition?

Go to Step 11

Go to Step 7

5 | Inspect for poor connections at the BTSI solenoid. Do you find and correct the condition? | Go to Step 11 | Go to Step 8
6 | Repair the short to battery in the BTSI solenoid supply circuit. Is the repair complete? | Go to Step 11 | --
7 | Replace the brake switch. Is the replacement complete? | Go to Step 11 | --
8 | Replace the BTSI solenoid. Is the problem found? | Go to Step 9 | Go to Step 11
9 | Check for the key interlock system. If needed, repair the key interlock system circuit. Is the problem found? | Go to Step 10 | Go to Step 11
10 | Replace the instrument panel fuse box which contains the multifunction module. Is the repair complete? | Go to Step 11 | --
11 | Operate the system in order to verify the repair. Did you find and correct the condition? | System OK | Go to Step 1