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 MANUALSSAAB1995900 S, 2D HATCHBACK, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 12 (ANTI-LOCK BRAKE SYSTEM)DIAGNOSTIC TESTSDTC B2470
1995 Saab 900 S, 2D Hatchback, Automatic
DTC B2470
1995 Saab 900 S, 2D Hatchback, AutomaticSECTION DTC B2470
WARNING: This page is about a different car, the 1996 Saab 900. However, it is still accessible from the selected car via links, so may be relevant.
- Connect scan tool. Turn ignition on. Using scan tool, select READ FUNCTIONS, then BRAKE LIGHT SWITCH. Depress and release brake pedal. Read brake switch on/off position with scan tool. If scan tool displays correct reading, go to step 3). If scan tool does not display correct reading, go to next step.
- Check if brake light operates when brake pedal is depressed. If brake light operates, check Violet wire for an open circuit between ABS ECM terminal No. 14 and brake light switch. If brake light does not operate, repair brake light circuit.
- Erase DTC. Test drive vehicle at various speeds for 5 minutes. If DTC reoccurs, replace ABS ECM.
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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.