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.
2000 Ford Taurus SELFACTORY OEM SERVICE PROCEDURE
Data Link Diagnostic Test
WARNING: This page is about a different car, the 2000 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
- Connect New Generation Star (NGS) tester to Data Link Connector (DLC), if not already connected. Select vehicle to be tested from NGS tester menu.
- Turn ignition switch to RUN position. Rotate dial on NGS tester to menu item DIAGNOSTIC DATA LINK and press trigger. A test will be performed on bus (circuits No. 914 and 915) for module communications network and ISO 9141 communication link (circuit No. 70).
- If NGS tester displays CKT 914 (+) = SYSTEM PASSED and CKT 915 (-) = SYSTEM PASSED, module communications network is okay. If NGS tester displays CKT 70 = SYSTEM PASSED, ISO 9141 communication link is operating properly. Return to article that directed you here and continue diagnosis.
- If NGS tester does not display CKT 914 (+) = SYSTEM PASSED, CKT 915 (-) = SYSTEM PASSED and CKT 70 = SYSTEM PASSED, perform the following as applicable:
- If no response from NGS tester, see TEST H: NO MODULE/NETWORK COMMUNICATION under SYSTEM TESTS.
- If NGS tester displays CKT 70, CKT 914 and/or CKT 915 = SOME ECUS NO RESP/NOT EQUIP, perform appropriate test. See SYMPTOM INDEX table under SYSTEM TESTS.
- If NGS tester displays CKT 70 = ALL ECUS NO RESP/NOT EQUIP, see TEST F: NO MODULE/NETWORK COMMUNICATION - ISO 9141 LINK under SYSTEM TESTS.
- If NGS tester displays CKT 914 or CKT 915 = ALL ECUS NO RESP/NOT EQUIP, see TEST G: NO MODULE/NETWORK COMMUNICATION - SCP NETWORK under SYSTEM TESTS.
- If module in question is NO RESPONSE/NOT EQUIPPED, perform appropriate test. See SYMPTOM INDEX table under SYSTEM TESTS.
- If module in question is NO RESPONSE ON CKT 914 (BUS +) or NO RESPONSE ON CKT 915 (BUS -), perform appropriate test. See SYMPTOM INDEX table under SYSTEM TESTS.
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.