Brake Transmission Shift Interlock System: Verification
The following chart describes the normal operation of the Brake Transmission Shift Interlock (BTSI) system. If the "expected response" differs from the vehicle's response, then system repair and/or adjustment is necessary.
BRAKE TRANSMISSION SHIFT INTERLOCK (BTSI) SYSTEM NORMAL OPERATION
| ACTION | EXPECTED RESPONSE |
|---|---|
| 1. Turn key to the "OFF" position. | 1. Shifter CAN be shifted out of park. |
| 2. Turn key to the "ON/RUN" position. | 2. Shifter CANNOT be shifted out of park. |
| 3. Turn key to the "ON/RUN" position and depress the brake pedal. | 3. Shifter CAN be shifted out of park. |
| 4. Leave shifter in any gear and try to return key to the "LOCK" or "ACC" position. | 4. Key cannot be returned to the "LOCK" or "ACC" position. |
| 5. Return shifter to "PARK" and try to remove the key. | 5. Key can be removed (after returning to "LOCK" position). |
| 6. With the key removed, try to shift out of "PARK". | 6. Shifter cannot be shifted out of "PARK". |
NOTE:
Any failure to meet these expected responses requires system adjustment or repair.