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 MANUALSMERCURY2009MILAN PREMIER, 3.0 1, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1366 (CHARGING SYSTEM - GENERAL INFORMATION)DIAGNOSTIC TESTSCHARGING SYSTEMCOMPONENT TESTSGENERATOR ON-VEHICLE TESTS - NO LOAD TEST
2009 Mercury Milan Premier, 3.0 1, AWD
Generator On-Vehicle Tests - No Load Test
2009 Mercury Milan Premier, 3.0 1, AWDSECTION Generator On-Vehicle Tests - No Load Test
WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
- Switch the tester to the voltmeter function.
- Connect the voltmeter positive lead to the generator B+ terminal, circuit 38 (RD) and the negative lead to ground.
- Turn all of the electrical accessories off.
- With the engine running at approximately 2,000 RPM, check the generator output voltage. The voltage should be between 13.2 and 15.5 volts. If not, refer back to the pinpoint test or go to Symptom Chart .
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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.