Fuel Pump Module Connector Removal ................................................................................................................. 5.2

Initial Starting/Priming Procedure ........................................................................................................................... 5.2

Fuel Recommendations .............................................................................................................................................. 5.2

EFI Fuel System Components ................................................................................................................................... 5.3

Operation...................................................................................................................................................................... 5.3

Important Service Notes ...................................................................................................................................... 5.3-5.4

Electrical Components

Electronic Control Unit (ECU) ............................................................................................................................ 5.4-5.5

Wiring Harness ............................................................................................................................................................ 5.5

Electrical System ................................................................................................................................................... 5.5-5.8

Crankshaft Position Sensor ........................................................................................................................................ 5.9

Thrott le Position Sensor (TPS) and ECU Reset and TPS Learn Procedures ............................................... 5.9-5.11

Engine (Oil) Temperature Sensor ................................................................................................................... 5.11-5.12

Intake Air Temperature Sensor ............................................................................................................................... 5.12

Oxygen Sensor ................................................................................................................................................... 5.13-5.15

Manifold Absolute Pressure (MAP) Sensor .......................................................................................................... 5.16

Fuel Injectors ...................................................................................................................................................... 5.16-5.19

Ignition System .................................................................................................................................................. 5.19-5.20

Spark Plugs ................................................................................................................................................................ 5.20

Batt ery Charging System ......................................................................................................................................... 5.20

Fuel Components

Fuel Pump .......................................................................................................................................................... 5.20-5.22

Fuel Filter ................................................................................................................................................................... 5.22

High Pressure Fuel Line ................................................................................................................................... 5.22-5.23

Purge Port and Vent Hose Assembly ..................................................................................................................... 5.23

Thrott le Body/Intake Manifold Assembly ............................................................................................................. 5.23

Idle Speed Adjustment (RPM)......................................................................................................................... 5.23-5.24

Initial Governor Adjustment ........................................................................................................................... 5.24-5.25

Troubleshooting

Troubleshooting Guide............................................................................................................................................. 5.26

Fuel System ........................................................................................................................................................ 5.26-5.27

Fault Codes ....................................................................................................................................................... 5.27-5.35

Troubleshooting Flow Chart............................................................................................................................ 5.35-5.36

Flow Chart Diagnostic Aids ............................................................................................................................ 5.37-5.38

EFI Service Tools ................................................................................................................................Refer to Section 2

Section 5

System

Section 5

EFI Fuel System

Page(s)

5.1

Table of Contents