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Home >> Toyota >> 1991 >> Tercel LE, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Battery Signal
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Battery Signal

Battery voltage is always present at BATT terminal of ECU. When ignition switch is turned to ON position, voltage for ECU operation is applied through the EFI main relay to terminals +B and +B1.