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.
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HOMESERVICE MANUALSSATURN1993SC L4-1.9L SOHC VIN 9REPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLETESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSBRAKE SWITCH DIAGNOSIS
1993 Saturn SC L4-1.9L SOHC VIN 9
Brake Switch Diagnosis
1993 Saturn SC L4-1.9L SOHC VIN 9SECTION Brake Switch Diagnosis
Brake Switch Connectors:
The brake switch will store an Information flag for certain fault conditions. The scan tool can he used to verify proper signals to the PCM/TC.
- Check brake switch connector for open, spread or corroded terminals.
- Test switch by checking continuity across terminal "A" at switch and terminal "D" at switch. Continuity should he present with brake off. Continuity should not be present with brake on. If damaged, replace switch.
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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.