Fuel Pump Relay; Electronic Control Module (Ecm) - Mercury MerCruiser MCM 454 Mag MPI Service Manual

MULTI-PORT FUEL INJECTION DISASSEMBLY AND REASSEMBLY

Fuel Pump Relay

REMOVAL
1. Remove fuel pump relay from electrical bracket.
2. Disconnect electrical connector and remove fuel pump relay.
IMPORTANT: The fuel pump relay is an electrical component. DO NOT soak in any
liquid cleaner or solvent; damage may result.
INSTALLATION
1. Connect electrical connector to fuel pump relay.
2. Mount fuel pump relay on electrical bracket.

Electronic Control Module (ECM)

IMPORTANT: The ECM is a sensitive electrical device, subject to electrostatic
damage. DO NOT touch connector pins when removing or installing the module.
REMOVAL
1. Disconnect J1 and J2 electrical connectors at engine control module (ECM).
2. Remove ECM from electrical bracket.
Index
Page 5C-54
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a - Fuel Pump Relay
Refer to "Precautions" in this section, BEFORE proceeding.
a - Electrical Bracket
b - ECM
c - J1- Electrical Connector (Front Connector)
d - J2- Electrical Connector (Rear Connector)
NOTICE
a
b
d
SERVICE MANUAL NUMBER 23
a
75442
c
75441
90-861326--1 MARCH 1999