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Home >> Mitsubishi >> 1994 >> 3000GT V6-2972cc 3.0L DOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Relays and Modules - Computers and Control Systems >> Main Relay (Computer/Fuel System) >> Testing and Inspection >> Power Supply and Ignition Switch-IG
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Power Supply and Ignition Switch-IG











CIRCUIT DIAGRAM





INSPECTION USING SCAN TOOL

















HARNESS INSPECTION PROCEDURE

MULTIPORT FUEL INJECTION (MFI) RELAY INSPECTION

Caution: When applying battery voltage directly, make sure that it is applied to correct terminal. Otherwise, the relay could be damaged.










MFI RELAY INSPECTION








(1) Remove the MFI relay.
(2) Check for continuity between MFI relay terminals.
(3) Using jumper wires, connect terminal (7) of MFI relay to battery (+) terminal and terminal (5) of MFI relay to battery (-) terminal.
Caution: If jumper leads are not connected properly the relay will be damaged.








(4) Connecting and disconnecting the jumper wire to battery (-) terminal, measure the voltage at terminal (1) of the MFI relay.
(5) Using jumper wires, connect terminal (8) of MFI relay to battery (+) terminal and terminal (6) of MFI relay to battery (-) terminal.








(6) Connecting and disconnecting the jumper wire to battery (-) terminal, check the continuity across terminals (2) and (4) (or (3) and (4)) of the MFI relay.


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