Corolla Sedan L4-107.5 1762cc 1.8L DOHC (7A-FE) (1993)
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EFI Main Relay: Testing and Inspection
Back-Up Power Source
Battery positive voltage is supplied to terminal BATT of the ECM even when the ignition switch is off for use by the diagnostic trouble code memory
and air-fuel ratio adaptive control value memory, etc.
Diagnostic Chart
Circuit Diagram