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.
Profile Ignition Pick-Up (PIP)
On Distributor Ignition (DI) systems, PIP signal is provided by a 12-volt reference from ignition module to Hall Effect switch inside distributor. This reference voltage is modulated by window/shutter Hall Effect switch. Monitored reference is pulled low when shutter blade is out of Hall Effect switch window.
When shutter blade enters window, 12-volt reference returns, and ignition module sends PIP signal to PCM. PCM uses the PIP signal as an RPM reference to calculate timing adjustments. PCM timing control returns to ignition module in form of a Spark Output (SPOUT) signal.
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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.