Mercury MerCruiser MCM 454 Mag MPI Service Manual page 630

SERVICE MANUAL NUMBER 23
Index
90-861326--1 MARCH 1999
Downloaded from https://needmanual.com/
a - IC module
b - Water Temp Sender For Gauge
c - To Drawing 4 of 4
d - Harness Connector
e - Ignition Coil
f - Gear Lube Switch
g - Oil Pressure Switch
h - ECM Ground
i - ECM Ground
j - Ignition Control Signal
k - Ignition Control Reference High
l - Ignition Control Bypass
m - Ignition Control Reference Low
n - Coolant Over Temperature And Discrete Switch Output
o - Not Used
p - Discrete Switch Inputs (J1–4 for earlier models and J1–6 for later models)
GENERAL SYSTEM DIAGNOSTICS
Page 5E-37