Ventrac 4520P - Page 8

Testing the Charging System ........................................................................................ 6–6
Checking the Operation of the Interlock Switches ................................................... 6–6
Electrical Component Testing ........................................................................................... 6–9
Fuses .................................................................................................................................. 6–9
Relays............................................................................................................................... 6–15
Tractor Control Module (TCM)........................................................................................ 6–19
Removing and Installing the TCM.............................................................................. 6–20
Tractor Control System (TCS) ........................................................................................ 6–21
Removing and Installing the TCS............................................................................... 6–22
Information Gauge Cluster .............................................................................................. 6–23
Programming the Gauge ................................................................................................. 6–24
Power Relay Module ......................................................................................................... 6–26
Key Switch........................................................................................................................... 6–26
Testing the Key Switch...................................................................................................... 6–28
Power Take Off (PTO) Enable Switch........................................................................... 6–28
Testing the Power Take Off (PTO) Switch.................................................................... 6–29
Seat Switch.......................................................................................................................... 6–30
Testing the Seat Switch ................................................................................................ 6–30
Headlight Switch ................................................................................................................ 6–31
Testing the Headlight Switch ........................................................................................... 6–32
Directional Signal Switch.................................................................................................. 6–32
Testing the Directional Signal Switch ............................................................................ 6–33
Hazard Flasher Switch...................................................................................................... 6–33
Testing the Hazard Flasher Switch ................................................................................ 6–34
Work Light Switch .............................................................................................................. 6–34
Testing the Work Light Switch......................................................................................... 6–35
Strobe Light Switch............................................................................................................ 6–35
Testing the Strobe Light Switch ...................................................................................... 6–36
Rear 12 Volt Switch ........................................................................................................... 6–36
Testing the Rear 12 Volt Switch...................................................................................... 6–37
Rear 12 Volt Momentary Switch ..................................................................................... 6–37
Testing the Rear 12 Volt Momentary Switch................................................................ 6–38
Parking Brake Switch........................................................................................................ 6–38
Testing the Parking Brake Switch................................................................................... 6–39
PTO Electric Clutch ........................................................................................................... 6–40
Testing the PTO Electric Clutch.................................................................................. 6–40
Warning Alarm .................................................................................................................... 6–42
Testing the Warning Alarm........................................................................................... 6–42
Neutral Switch..................................................................................................................... 6–43
Testing the Neutral Switch ............................................................................................... 6–44
Hydraulic Fluid Temperature Switches ......................................................................... 6–45
Testing the Front Motor Hydraulic Fluid Temperature Switch.............................. 6–45
Testing the Hydraulic Cooler Temperature Switch ................................................. 6–46
Hydraulic Cooler Fan ........................................................................................................ 6–48
Testing the Hydraulic Cooler Fan ............................................................................... 6–48
Speed Sensor ..................................................................................................................... 6–50
Testing the Speed Sensor............................................................................................ 6–51
Adjusting the Speed Sensor........................................................................................ 6–52
RPM Sensor........................................................................................................................ 6–53
Testing the RPM Sensor............................................................................................... 6–53
Adjusting the RPM Sensor........................................................................................... 6–54
Fuel Pump ........................................................................................................................... 6–55
Testing the Fuel Pump ...................................................................................................... 6–56
Fuel Level Sender.............................................................................................................. 6–57
Preface: Page 8 4520P
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