Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 963 (OVERHAUL - AUTOMATIC TRANSMISSION)SHIFT INTERLOCK SYSTEMDIAGNOSIS AND TESTING - SHIFT INTERLOCK SYSTEMSHIFTER LOCKED IN PLACECIRCUIT TEST
2004 Toyota Matrix XR, FWD, Standard
Circuit Test
2004 Toyota Matrix XR, FWD, StandardSECTION Circuit Test
WARNING: This page is about a different car, the 2004 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.
- Check the system fuse in the junction block (An open or blown fuse would allow the shift lever to be moved in and out of the PARK position without the brake pedal applied).
- Remove the instrument panel cover below the steering column, then remove the steering column shrouds to gain access to the brake transmission shift interlock (BTSI) solenoid.
- Disconnect the wire connector from the rear of the BTSI solenoid.
- Insert the ignition key and turn it to the ON position.
- Back-probe the wire connector's terminal number 2 with a test light. The test light should illuminate. If not, there is an open or short in the ignition feed circuit leading to the BTSI solenoid. Repair the open or short.
- Next, back-probe the wire connector with a test light, placing the test light in series between the two wires. At this point, the test light should illuminate. If not, there is an open in the ground circuit or brake lamp switch. Repair the open or replace brake lamp switch as necessary.
- Depress the brake pedal. The test light should go out. If it does not, there is a short in the ground circuit or brake lamp switch. Repair the short or replace brake lamp switch as necessary.
- Reconnect the wire connector to the solenoid.
If the circuit passes the above test and the shifter can still be moved freely in and out of PARK without the brake pedal depressed, replace the interlock cable.
ACTION EXPECTED RESPONSE
| ACTION | EXPECTED RESPONSE |
|---|---|
| 1. Turn key to the "ACC" position and depress brake pedal. | 1. Shifter CAN be shifted out of park. |
| 2. Turn key to the "ON" position, with foot off of brake pedal. | 2. Shifter CANNOT be shifted out of park. |
| 3. Turn key to the "ON" 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" position. | 4. Key cannot be returned to the "LOCK" 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". |
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NOTE:
Any failure to meet these expected responses requires system adjustment or repair.
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RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.