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.
Transmission Position Sensor/Switch: Description and Operation
1996 Saturn SC2 L4-1.9L DOHC VIN 7SECTION Description and Operation
Diagnostic Chart:
The park/neutral position switch contains four switches that ground four different circuits. These circuits are 771 (switch A), 772 (switch B), 773 (switch C) and 776 (switch D). (The switch also contains the backup lamp switch and the neutral/start switch.)
The transaxle monitors these four circuits and determines what gear the operator has selected by the combinations of opens and grounds. Each combination indicates a specific selection in the manual shift quadrant (PRND32).
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.