Mercury MerCruiser MCM 454 Mag MPI Service Manual page 594

SERVICE MANUAL NUMBER 23
Table of Contents
Diagnostic Circuit Check
Scan Tool Normal Specifications (Idle /
Warm Engine / Closed Throttle /
Neutral) . . . . . . . . . . . . . . . . . . . . . . . .
MEFI 1 - ECM Connector Chart For
454/502 Mag MPI and 8.2L MPI
Diagnostic Trouble Codes
MEFI 1 - Codes for the 454 / 502 Mag
MPI and 8.2L MPI Engines
MEFI 2 - Codes for the 7.4L MPI
Engines . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Codes for the MEFI 3
454 cid (7.4L) / 502 cid (8.2L)
Engines . . . . . . . . . . . . . . . . . . . . . . . .
Special Tools . . . . . . . . . . . . . . . . . . . . . . .
MEFI 1 - 454/502 Mag MPI and 8.2L MPI
Symptom Chart (J-1 Circuits)
Index
90-861326--1 MARCH 1999
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FUEL SYSTEM
Section 5E - General System Diagnostics
. . . . . . . . . . . . . 5E-2
5E-2
. . . . . . 5E-3
. . . . . . . . . . . . 5E-5
. . . . . . . 5E-5
5E-5
5E-6
5E-7
. . . . . . . . 5E-10
MEFI 1 - 454/502 Mag MPI and 8.2L MPI
Symptom Chart (J-2 Circuits)
MEFI 1 - 454/502 Mag MPI and 8.2L MPI
Wiring System Diagram (1 of 4)
MEFI 2 - ECM Connector Chart For
7.4L MPI . . . . . . . . . . . . . . . . . . . . . . . . . .
MEFI 2 - 7.4L MPI Symptom Chart
(J-1 Circuits) . . . . . . . . . . . . . . . . . . . . . . .
MEFI 2 - 7.4L MPI Wiring System Diagram
(1 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MEFI 3 - ECM Connector Chart
MEFI 3 - ECM J-1 and J-2 Circuit/
Symptom Chart . . . . . . . . . . . . . . . . . . . .
MEFI 3 - ECM Wiring 1 of 4
Injector Balance Test . . . . . . . . . . . . . . . .
Test Procedure . . . . . . . . . . . . . . . . . . .
Test Example . . . . . . . . . . . . . . . . . . . .
General Diagnostic Tests
GENERAL SYSTEM DIAGNOSTICS
. . . . . . . . 5E-12
. . . . . . 5E-16
5E-23
5E-26
5E-32
. . . . . . . 5E-40
5E-41
. . . . . . . . . . . 5E-45
5E-49
5E-49
5E-50
. . . . . . . . . . . . . 5E-51
Page 5E-1
5
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