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.
Pressure Switches
Two positive pressure switches are located in front of body strut mount. One switch operates when intake manifold pressure reaches 1.0 psi and causes turbo indicator light to illuminate.
At the same time, it also transmits heavy load signal to the control unit for canceling air/fuel ratio feedback control. The other switch operates at a pressure of 9.1 psi and cuts off fuel when an abnormal rise in supercharging pressure occurs.
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.
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