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 MANUALSMERCURY2001SABLE LS, 4D SEDAN, 3.0 U, AX4SREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEM CONTROLDIAGNOSTIC TESTSTEST I: YELLOW ABS INDICATOR ALWAYS ON, DOES NOT SELF- CHECK, NO DTCS
2001 Mercury Sable LS, 4D Sedan, 3.0 U, AX4S
Test I: Yellow Abs Indicator Always On, Does Not Self- Check, No DTCS
2001 Mercury Sable LS, 4D Sedan, 3.0 U, AX4SSECTION Test I: Yellow Abs Indicator Always On, Does Not Self- Check, No DTCS
- Check Ignition Voltage Input To ABS Indicator
Turn ignition off. Disconnect ABS control module connector C135. Disconnect instrument cluster 16-pin connector C220b. Turn ignition on. Measure voltage between instrument cluster connector terminal No. 10 (Red/Yellow wire) and ground. If battery voltage is present, repair Red/Yellow wire. Repeat self-test. If battery voltage is not present, go to next step. - Check Circuit No. 603 (Dark Green Wire)
Turn ignition off. Measure resistance between ABS control module connector terminal No. 25 (Dark Green wire) and instrument cluster connector terminal No. 1. See Figure and Figure . If resistance is less than 5 ohms, replace ECU. Repeat self-test. If resistance is more than 5 ohms, repair Dark Green wire. Repeat self-test.
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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.