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 MANUALSFORD1991PROBE GL, STANDARDREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEMPINPOINT TESTSFA-3 SOLENOID CHECK AT ABS CONTROL UNIT
1991 Ford Probe GL, Standard
Fa-3 Solenoid Check At Abs Control Unit
1991 Ford Probe GL, StandardSECTION Fa-3 Solenoid Check At Abs Control Unit
- Ensure ignition is off. Disconnect ABS control unit. Set ohmmeter to appropriate setting for test being conducted.NOTE: Set ohmmeter to 200-k/ohm scale for first reading in each test and then 200-ohm scale for second reading.
- Measure resistance between ABS control unit Yellow/White and hydraulic control unit Black & Red/Yellow wires. Resistance should be greater than 10 k/ohms. Measure resistance between ABS control unit Yellow/White and hydraulic control unit Black/Yellow wires. Resistance should be 0-4 ohms.
- Measure resistance between ABS control unit Yellow/Red and hydraulic control unit Black & Red/Yellow wires. Resistance should be greater than 10 k/ohms. Measure resistance between ABS control unit Yellow/Red and hydraulic control unit Black/Yellow wires. Resistance should be 0-4 ohms.
- Measure resistance between ABS control unit Yellow/Green and hydraulic control unit Black & Red/Yellow wires. Resistance should be greater than 10 k/ohms. Measure resistance between ABS control unit Yellow/Green and hydraulic control unit Black/Yellow wires. Resistance should be 0-4 ohms.
- Measure resistance between ABS control unit Blue and hydraulic control unit Black & Red/Yellow wires. Resistance should be greater than 10 k/ohms. Measure resistance between ABS control unit Blue and hydraulic control unit Black/Yellow wires. Resistance should be 0-4 ohms.
- Measure resistance between ABS control unit Black/White and hydraulic control unit Black & Red/Yellow wires. Resistance should be greater than 10 k/ohms. Measure resistance between ABS control unit Black/White and hydraulic control unit Black/Yellow wires. Resistance should be 0-4 ohms.
- Measure resistance between ABS control unit Brown and hydraulic control unit Black & Red/Yellow wires. Resistance should be greater than 10 k/ohms. Measure resistance between ABS control unit Brown and hydraulic control unit Black/Yellow wires. Resistance should be 0-4 ohms. If resistance readings are correct, replace ABS control unit. If resistance readings are not correct, repair wire in question. If all checks out okay, go to FA-4 SOLENOID CHECK AT HYDRAULIC CONTROL UNIT .
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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.