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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE> 13B-361 . CIRCUIT OPERATION • The injector power is supplied from the injector relay (terminal No. 3). • The ECM controls the injector by turning the power transistor in the ECM "ON" and "OFF". . TECHNICAL DESCRIPTION • The amount of fuel injected by the injector is con- trolled by the amount of continuity time the coil is . DESCRIPTIONS OF MONITOR METHODS The ECM detects open circuit and short malfunction. . MONITOR EXECUTION Continuous . AK900139 AD B-103 (GR) Connector: B-103 AK700399AB MFI relay A-33X Connector: A-33X AK900134 AD B-21 (B) Connector: B-21 Intermediate AK700413AB A-24X Connector: A-24X Injector relay AK700401AB ECM B-10 (GR) Connector: B-10 AK700414 AB ETACS-ECU C-317 Connectors: C-304, C-317 C-304 AK900602 Connector: A-13 A-13 AB |