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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 244 (Generators & Regulators - F250-F550 Super Duty (Diesel With Dual Generators)) >> On-Vehicle Testing >> Generator Load Test

Generator Load Test

WARNING: This page is about a different car, the 2004 Ford Pickup, 2004 Ford F550 Super Duty, 2004 Ford F450 Super Duty, and 2004 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ensure drive belt is in good condition. Replace belt as necessary. If belt is okay, connect charging system load tester in accordance with manufacturer's instructions. Start and run engine at 2000 RPM, and apply load until generator output levels off. For minimum output specifications, see GENERATOR SPECIFICATIONS . Go to next step.
  2. Turn A/C system on. Turn blower speed to high. Turn headlights on to high beams. Increase engine speed to 2000 RPM. Voltage should increase a minimum of 0.5 volt above base voltage.
    • Backprobe the "I" circuit at the generator connector (connector plugged in) and measure the "I" circuit voltage. See WIRING DIAGRAMS . If the voltage is less than 2 volts, install a new generator. See GENERATOR (LOWER)  or GENERATOR (UPPER)  under REMOVAL & INSTALLATION.
    • If voltage does not increase as specified, perform GENERATOR NO-LOAD TEST .
    • If voltage is as specified, system is operating properly at this time.
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