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Home >> Geo >> 1989 >> Tracker Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Theory/Operation >> Computerized Engine Controls >> Input Devices >> Electrical Load (Tracker)

Electrical Load (Tracker)

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Through a single wire from the diode box to the ECM, ECM monitors electrical load caused by running lights, headlights, rear defogger (if equipped), warning unit and the heater and defogger fan. ECM will compensate for electrical load by increasing idle speed. ECM also compensates (increases) injector pulse width when electrical load causes battery voltage to drop.