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 MANUALSSATURN2000SC2 AUTOMATIC, MP6REPAIR AND DIAGNOSISBRAKESANTI-LOCK BRAKESANTI-LOCK BRAKE SYSTEM/TRACTION CONTROL SYSTEMDIAGNOSTIC TESTSDTC C0165: ABS/TCS BRAKE SWITCH CIRCUIT OPEN
2000 Saturn SC2 Automatic, MP6
DTC C0165: Abs/TCS Brake Switch Circuit Open
2000 Saturn SC2 Automatic, MP6SECTION DTC C0165: Abs/TCS Brake Switch Circuit Open
- Turn ignition on, with engine off. Using scan tool, monitor brake switch status while cycling switch. If scan tool indicates correct brake status, problem is intermittent. If scan tool does not indicate correct brake status, go to next step.
- Check BRAKE fuse (15-amp) located in underhood fuse block. Replace as necessary and retest. If fuse is okay, disconnect brake switch. Connect and reconnect jumper wire between switch harness connector terminals while monitoring scan tool. If scan tool indicates a change in status, check for terminal tightness. Repair as necessary. If terminals are okay, replace brake switch. If scan tool does not indicate a change in status, go to next step.
- Check voltage on brake switch circuit to fuse block. If ignition voltage is present, check for open in circuit to EBTCM or terminal tightness at EBTCM. Repair as necessary. If ignition voltage is not present, repair open in circuit to fuse block.
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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.