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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBUICK1993REGAL V6-231 3.8L VIN L SFIREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSINFORMATION BUSTESTING AND INSPECTION
1993 Buick Regal V6-231 3.8L VIN L SFI
Information Bus: Testing and Inspection
1993 Buick Regal V6-231 3.8L VIN L SFISECTION Testing and Inspection
ECM DATA LINE
1. If all components are not accessible with a scan tool, check for an open in CKT 461 between DLC terminal "M" and S237.
2. If a single component is not accessible with a scan tool, check for an open in CKT 461 between S237 and the component. If the wire is OK, refer to Computers and Controls for Engine Control Module diagnosis, Brakes and Traction Control for ABS diagnosis and to Driver Information Center/Electronic Compass diagnosis.
E & C DATA LINE
1. If all components are not accessible with a scan tool, check for an open in CKT 835 between DLC terminal "J" and S225.
2. If a single component is not accessible with a scan tool, check for an open in CKT 835 between S225 and the component.
1. If all components are not accessible with a scan tool, check for an open in CKT 461 between DLC terminal "M" and S237.
2. If a single component is not accessible with a scan tool, check for an open in CKT 461 between S237 and the component. If the wire is OK, refer to Computers and Controls for Engine Control Module diagnosis, Brakes and Traction Control for ABS diagnosis and to Driver Information Center/Electronic Compass diagnosis.
E & C DATA LINE
1. If all components are not accessible with a scan tool, check for an open in CKT 835 between DLC terminal "J" and S225.
2. If a single component is not accessible with a scan tool, check for an open in CKT 835 between S225 and the component.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.