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 MANUALSMERCURY1999TRACER LS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESMODULE COMMUNICATIONS NETWORK SYSTEMSYSTEM TESTINGTEST E: NO MODULE/NETWORK COMMUNICATIONS - ISO 9141 LINK
1999 Mercury Tracer LS, 4D Sedan, Standard
Test E: No Module/Network Communications - ISO 9141 Link
1999 Mercury Tracer LS, 4D Sedan, StandardSECTION Test E: No Module/Network Communications - ISO 9141 Link
NOTE:
Depending on module configuration, with all modules connected and with ignition switch in RUN position or with engine running 2-3 volts may be present at Data Link Connector (DLC) terminal No. 7 (Orange/Blue wire). This is the International Standards Organization (ISO) 9141 diagnostic communications network circuit.
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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.