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 MANUALSBUICK2013REGAL TURBO PREMIUM, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 170 (PARKING BRAKE SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC C0293CIRCUIT/SYSTEM TEST
2013 Buick Regal Turbo Premium, Standard Trans
Circuit/System Test
2013 Buick Regal Turbo Premium, Standard TransSECTION Circuit/System Test
WARNING: This page is about a different car, the 2012 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
C0293 01 or C0293 06
- Ignition OFF, disconnect the harness at the S91 Parking Brake Control Switch.
- Test for B+ between the B+ circuit terminal listed below and ground:
- Terminal 4
- Terminal 5
- If less than the specified range, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K83 Parking Brake Control Module.
- If greater than the specified range, test the B+ circuit for a short to voltage. If the circuit tests normal, replace the K83 Parking Brake Control Module.
- Disconnect the harness at the K83 Parking Brake Control Module.
- Ignition ON, test for less than 1 V between the following signal circuit terminals at the park brake control switch harness connector and ground:
- Terminal 1
- Terminal 2
- Terminal 3
- Terminal 7
- If greater than the specified range, test the signal circuit for a short to voltage.
- Test for infinite resistance between the signal circuits listed below and ground:
- Terminal 1
- Terminal 2
- Terminal 3
- Terminal 7
- If less than the specified value, test the park brake signal circuit for a short to ground.
- Test for less than 5 Ξ© between the following signal circuit terminals:
- Parking brake control switch harness terminal 1 and the parking brake control module terminal N
- Parking brake control switch harness terminal 2 and the parking brake control module terminal C
- Parking brake control switch harness terminal 3 and the parking brake control module terminal B
- Parking brake control switch harness terminal 7 and the parking brake control module terminal D
- If greater than the specified range, test the signal circuit for an open/high resistance.
- If all circuits test normal, test or replace the S91 Parking Brake Control Switch. If DTC resets, replace the K83 Parking Brake Control Module.
C0293 08Β
Remove the EPB fuse and reinstall. Verify DTC C0293 08 is not set.
- If DTC C0293 08 is set replace the S91 park brake control switch.
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:
- 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.