Table Of Contents - Kohler Command CH18-750 Service Manual

Electronic Fuel Injection (EFI)
Contents
Description
Initial Starting/Priming Procedure ...................................................................................................................... 5B.2
Fuel Recommendations ........................................................................................................................................ 5B.2
EFI Fuel System Components .............................................................................................................................. 5B.3
Operation ................................................................................................................................................................ 5B.3
Important Service Notes ....................................................................................................................................... 5B.4
Electrical Components
Electronic Control Unit (ECU) .................................................................................................................... 5B.4-5B.5
Engine Speed Sensor .................................................................................................................................... 5B.5-5B.6
Throttle Position Sensor (TPS) and Initialization Procedures ............................................................ 5B.7-5B.10
Engine (Oil) Temperature Sensor ........................................................................................................... 5B.10-5B.11
Oxygen Sensor .......................................................................................................................................... 5B.11-5B.13
Electrical Relay ......................................................................................................................................... 5B.13-5B.14
Fuel Injectors ............................................................................................................................................. 5B.14-5B.17
Ignition System ......................................................................................................................................... 5B.17-5B.18
Spark Plugs ........................................................................................................................................................... 5B.18
Wiring Harness ........................................................................................................................................ 5B.18-5B.19
Battery Charging System ................................................................................................................................... 5B.19
Fuel Components
Fuel Pump ................................................................................................................................................. 5B.19-5B.20
Fuel Pressure Regulator ........................................................................................................................... 5B.20-5B.22
Fuel Filter .............................................................................................................................................................. 5B.22
Fuel Rail ................................................................................................................................................................ 5B.22
Fuel Line .................................................................................................................................................... 5B.22-5B.23
Throttle Body/Intake Manifold Assembly ....................................................................................................... 5B.23
Idle Speed Adjustment (RPM) ................................................................................................................ 5B.23-5B.24
Initial Governor Adjustment ................................................................................................................... 5B.24-5B.26
Troubleshooting
Troubleshooting Guide ....................................................................................................................................... 5B.26
Electrical System ....................................................................................................................................... 5B.27-5B.33
Fuel System .......................................................................................................................................................... 5B.34
Fault Codes ................................................................................................................................................ 5B.34-5B.42
Troubleshooting Flow Chart ................................................................................................................... 5B.42-5B.43
Flow Chart Diagnostic Aids .................................................................................................................... 5B.44-5B.45
EFI Service Tools ............................................................................................................................. Refer to Section 2
Section 5B
Fuel System
Section 5B
EFI Fuel System
Page(s)
5B.1
5B