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.
2002 Ford Focus SVTFACTORY OEM SERVICE PROCEDURE
Test A: Anti-Lock Brake System Module Does Not Respond To Scan Tool
- Turn ignition switch to LOCK position. Disconnect ABS control module harness connector C840. Measure resistance between ABS control module connector C840 terminal No. 12 (Gray wire) and DLC terminal No. 2 (Gray/Red wire). See Figure and Fig 1 . If resistance is less than 5 ohms, go to next step. If resistance is greater than 5 ohms, repair open between C840 and DLC connector. Test system operation.
- Measure resistance between C840 terminal No. 14 (Blue wire) and DLC terminal No. 10. On vehicles with traction control, if resistance is less than 5 ohms, go to next step. On vehicles without traction control, if resistance is less than 5 ohms, replace ABS control module. See appropriate ANTI-LOCK article in BRAKES. Test system operation. If resistance is greater than 5 ohms, repair open in Blue wire and test system operation.
- Turn ignition switch to OFF position. Disconnect ABS control module connector C830. Measure resistance between C830 (Gray wire) and DLC connector terminal No. 2 (Gray/Red wire). See Figure and Fig 2 . If resistance is less than 5 ohms, go to next step. If resistance is greater than 5 ohms, repair open between C830 and DLC connector. Test system operation.
- Measure resistance between ABS control module connector C830 terminal No. 13 (Blue wire) and DLC connector terminal No. 10 (Blue/Red wire). If resistance is less than 5 ohms, replace ABS control module. See appropriate ANTI-LOCK article in BRAKES. If resistance is greater than 5 ohms, repair open between C830 and DLC connector. Test system operation.
Factory Service Tools
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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.