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.
Switch To Ground
| Switch | PCM Pin | BOB Pin | Wire Color | ||||
|---|---|---|---|---|---|---|---|
| PSP | 1K | 19 | GRN/RED | ||||
| PNP/CPP | 1G | 8 | RED/BLU | ||||
| IDL | 1E | 28 | GRN/ORG | ||||
| BPS (2) | 2L | 12 | LT GRN/BLK | ||||
|
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1)Β Turn ignition off. Install BOB, leaving PCM connected. Measure voltage between BOB test pin for switch in question and ground. Exercise switch. With switch open, voltage should be greater than 10 volts. With switch closed, voltage should be zero. If switch output is not as specified, go to next step. If switch output is as specified, switch is okay.
2)Β Unplug PCM connectors. Unplug switch in question. Inspect wire between switch and BOB for shorts or open circuits. If wire is okay, go to next step. Repair wire as necessary.
3)Β Inspect for open circuit in wire between switch in question and ground. Repair wire as necessary. If wire is okay, replace switch.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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