SERVICE MANUAL NUMBER 23
MULTI-PORT FUEL INJECTION DESCRIPTIONS AND SYSTEM OPERATION
FUEL SYSTEM
Section 5B - Multi-Port Fuel Injection Descriptions And
System Operation
Table of Contents
Identification . . . . . . . . . . . . . . . . . . . . . . . .
Electronic Control Module (ECM) . . .
General Information . . . . . . . . . . . . . . . . .
Introduction . . . . . . . . . . . . . . . . . . . . . .
Visual / Physical Inspection . . . . . . . .
Basic Knowledge and Tools Required
Electrostatic Discharge Damage . . . .
Diagnostic Information . . . . . . . . . . . .
Wiring Harness Service . . . . . . . . . . .
Wiring Connector Service . . . . . . . . . .
Abbreviations . . . . . . . . . . . . . . . . . . . . . . .
ECM Self-Diagnostics . . . . . . . . . . . . . . . .
Diagnostic Code Tool With Malfunction
Indicator Lamp . . . . . . . . . . . . . . . . . .
Intermittent Malfunction Indicator
Lamp . . . . . . . . . . . . . . . . . . . . . . . . . .
Reading Codes . . . . . . . . . . . . . . . . . . .
Scan Tools . . . . . . . . . . . . . . . . . . . . . . .
EFI Diagnostic Circuit Check . . . . . . .
Scan Tool Use With Intermittents . . .
Non-Scan Diagnosis of Driveability
Concerns (With No Codes Set) . . . .
Special Tools . . . . . . . . . . . . . . . . . . . . . . .
Precautions . . . . . . . . . . . . . . . . . . . . . . . .
5B-2
5B-2
5B-3
5B-3
5B-3
5B-3
5B-4
5B-4
5B-4
5B-5
5B-6
5B-7
Electronic Control Module (ECM) and
Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Description . . . . . . . . . . . . . . .
Computers and Voltage Signals . . . .
Analog Signals . . . . . . . . . . . . . . . . . . .
Digital Signals . . . . . . . . . . . . . . . . . . . .
Engine Control Module (ECM) . . . . . .
Speed Density System . . . . . . . . . . . .
ECM Input and Sensor Descriptions .
Engine Control Module (ECM) and
5B-15
5B-15
5B-15
5B-15
5B-16
5B-18
5B-19
5B-20
Delco EST Distributor System . . . . . 5B-25
5B-27
5
B
Spark Management . . . . . . . . . . . . . . . . . .
High Energy Ignition with Ignition
5B-7
Control (IC) . . . . . . . . . . . . . . . . . . . . .
Modes Of Operation . . . . . . . . . . . . . .
Distributor Module Mode . . . . . . . . . . .
ECM Control Mode . . . . . . . . . . . . . . .
Base Ignition Timing . . . . . . . . . . . . . .
Results of Incorrect Operation . . . . . .
Fuel Metering System . . . . . . . . . . . . . . . .
General Description . . . . . . . . . . . . . . .
Cool Fuel Systems . . . . . . . . . . . . . . . .
Modes of Operation . . . . . . . . . . . . . . .
454/502 Mag MPI and 8.2L MPI
5B-27
5B-27
5B-29
5B-29
5B-30
5B-32
5B-33
5B-33
5B-33
5B-33
5B-8
5B-8
5B-9
5B-9
5B-10
5B-11
5B-12
5B-13
Multi-Port Injection Components . . .
5B-35
5B-39
7.4L
MPI Multi-Port Injection
Components . . . . . . . . . . . . . . . . . . . .
90-861326--1
MARCH 1999
Page 5B-1
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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