
2001 Pioneer 900 Gasoline Vehicle Maintenance and Service Manual Page vii
Electrical System ............................................................................................................................... 11-7
Electrical Circuits ............................................................................................................................... 11-8
Starter Circuit ................................................................................................................................. 11-8
Generator Circuit ........................................................................................................................... 11-8
Engine Ignition Circuit .................................................................................................................... 11-9
Engine Kill Circuit ........................................................................................................................... 11-9
Reverse Buzzer Circuit .................................................................................................................. 11-10
Low Oil Warning Circuit ................................................................................................................. 11-11
Lockout Cam Circuit ...................................................................................................................... 11-11
Fuel Gauge and Sending Unit Circuit ............................................................................................ 11-12
Hour Gauge Circuit ........................................................................................................................ 11-13
Lighting Circuit ............................................................................................................................... 11-13
Circuit Testing .................................................................................................................................... 11-13
Testing the Starter Circuit and Generator Circuit ........................................................................... 11-14
Testing the Engine Ignition Circuit ................................................................................................. 11-15
Testing the Engine Kill Circuit ........................................................................................................ 11-15
Testing the Reverse Buzzer Circuit ............................................................................................... 11-16
Testing the Low Oil Warning Circuit .............................................................................................. 11-17
Testing the Lockout Cam Circuit .................................................................................................... 11-18
Testing the Fuel Gauge and Sending Unit Circuit ......................................................................... 11-18
Testing the Lighting Circuit ............................................................................................................ 11-19
Test Procedures ................................................................................................................................ 11-19
Index of Test Procedures ............................................................................................................... 11-19
SECTION 12 – ELECTRICAL COMPONENTS
Starter/Generator ............................................................................................................................... 12-2
Voltage Regulator .............................................................................................................................. 12-13
Diode ................................................................................................................................................. 12-14
Key Switch ......................................................................................................................................... 12-15
Solenoid ............................................................................................................................................. 12-16
Fuse ................................................................................................................................................... 12-17
Lockout Cam Limit Switch ................................................................................................................. 12-18
Lockout Cam ..................................................................................................................................... 12-19
Reverse Warning Buzzer ................................................................................................................... 12-20
Reverse Buzzer Limit Switch ............................................................................................................. 12-21
Oil Warning Light ............................................................................................................................... 12-21
Fuel/Hour Gauge ............................................................................................................................... 12-22
Fuel Level Sending Unit .................................................................................................................... 12-23
RPM Limiter ....................................................................................................................................... 12-24
Ignition Coil ........................................................................................................................................ 12-25
Oil Level Sensor ................................................................................................................................ 12-28