Service manual

90-898303

3-3

Table of Contents

Table of Contents..............................................................................................2

Table of Contents..............................................................................................3

1995-2001 3.0L Fuel Flow ................................................................................4

EFI Electrical Components ...............................................................................5

1995-2001 3.0L ............................................................................................5

ECM Injector Driver Test ..............................................................................7

3.0L Fuel Pump Test ....................................................................................8

3.0L ECM Wiring Diagram ................................................................................9

1995-2001 3.0L - Ignition System ...................................................................10

Theory of Operation ...................................................................................11

Ignition Component Description .................................................................11

225 EFI/250 EFI Warning Panel (3 Function Gauge) .....................................16

Operation of Warning Panel .......................................................................16

3 Function Gauge Wiring............................................................................18

Marine Diagnostics .........................................................................................19

Marine Diagnostics .........................................................................................20

Ignition ECM...............................................................................................20

Fuel ECM ...................................................................................................21

Injector Test................................................................................................22

Multi Pulse Test..........................................................................................24

Single Pulse Test .......................................................................................25

3.0L EFI Scan Data Worksheet ......................................................................26

Fuel ECM ...................................................................................................26

Ignition ECM...............................................................................................27

3.0L PROM ID Chart.......................................................................................28

3.0L PROM ID Chart (Cont.)...........................................................................29