ELECTRICAL SYSTEM
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SECTION 10
ELECTRICAL SYSTEM
10A Repair, Service Tools, and Materials .............................................................................................................. 1
Materials Required................................................................................................................................... 1
Specifications ........................................................................................................................................... 1
10B Failure Analysis .............................................................................................................................................. 3
General .................................................................................................................................................... 3
10C General Instructions........................................................................................................................................ 5
General .................................................................................................................................................... 5
Using a Multimeter ................................................................................................................................... 5
Wire Continuity Test ................................................................................................................................. 6
Resistance Test........................................................................................................................................ 6
Troubleshooting........................................................................................................................................ 6
10D Battery ............................................................................................................................................................ 7
General .................................................................................................................................................... 7
Charging a Maintenance Free Battery ..................................................................................................... 7
Maintenance/Cleaning ............................................................................................................................. 7
Battery (B1) Testing.................................................................................................................................. 8
10E Charging System ............................................................................................................................................ 9
General .................................................................................................................................................... 9
Charging System Voltage Test ................................................................................................................. 9
Alternator (U1) Voltage Test ..................................................................................................................... 9
Regulator (U1) test................................................................................................................................. 10
10F Starter ............................................................................................................................................................11
General ...................................................................................................................................................11
Starter (M1) Field Test.............................................................................................................................11
Starter Motor (M1).................................................................................................................................. 12
10G Switches ....................................................................................................................................................... 13
General .................................................................................................................................................. 13
Seat Switch (SW2)................................................................................................................................. 13
Ignition Switch (SW1)............................................................................................................................. 13
Parking Brake Switches (SW5 & SW11) ................................................................................................ 16
Neutral Switch (SW3)............................................................................................................................. 16
Mow (Deck) Switch (SW4) ..................................................................................................................... 17
PTO Enable Switch (SW10)................................................................................................................... 18
Differential Lock Switch (SW9) - Optional .............................................................................................. 19
Horn Switch (SW8) - Optional ................................................................................................................ 19
10H Senders ........................................................................................................................................................ 21
General .................................................................................................................................................. 21
Coolant Temperature Sender Test (R2) ................................................................................................. 21
Coolant Temperature Switch Test (SW6) ............................................................................................... 21
Engine Oil Pressure Switch Test (SW7)................................................................................................. 22
Fuel Sender Test (R3)............................................................................................................................ 22
10I Relays and Solenoids................................................................................................................................... 25
Relays (K1- K5)...................................................................................................................................... 25
Seat Time Delay Module (U5)................................................................................................................ 26
Solenoids (K6 & K8)............................................................................................................................... 26
Fuel Solenoid Test (K7).......................................................................................................................... 28
Fuel Solenoid (K7) Resistance Test.............................................................................................
.......... 28
10J
Fuses & Circuit Breakers.............................................................................................................................. 29
Fuse (F1) Test........................................................................................................................................ 29
Circuit Breaker (CB1) Test ..................................................................................................................... 29
10
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