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.
Shift Interlock Systems: Operation
Voltage is supplied through the BACK fuse (15-amp) to the transaxle range (TR) switch when the ignition switch is in the ON position or the START position. When you move the gearshift lever to the PARK position and depress the brake pedal, the voltage applies through the closed contacts of the TR switch and the stoplamp switch to the shift lock solenoid. The shift lock solenoid permanently grounds at the grounding point located at deck lid striker area. When the voltage applies, the shift lock solenoid energizes. The shift lock solenoid releases the gearshift lever locking mechanism.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.