Chapter 8
Electrical System
Table of Contents
ELECTRICAL SCHEMATICS . . . . . . . . . . . . . . . . . . . 2
SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . 4
ELECTRICAL SYSTEM QUICK CHECKS . . . . . . . . 6
Battery Test (Open Circuit Test) . . . . . . . . . . . . . . . 6
Charging System Test . . . . . . . . . . . . . . . . . . . . . . . 6
Glow Plug System Test (Workman HDX--D) . . . . . 6
Verify Interlock System Operation . . . . . . . . . . . . . 7
COMPONENT TESTING . . . . . . . . . . . . . . . . . . . . . . . 8
Ignition (Key) Switch . . . . . . . . . . . . . . . . . . . . . . . . . 8
Gauge Cluster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Headlight Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Brake Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Clutch Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Hydraulic Lift Lever Interlock Switch . . . . . . . . . . 13
3rd -- High Lockout Key Switch . . . . . . . . . . . . . . . 14
Transaxle Switches . . . . . . . . . . . . . . . . . . . . . . . . . 15
Power Relay (Four Terminals) . . . . . . . . . . . . . . . . 16
Relay (Five Terminals) . . . . . . . . . . . . . . . . . . . . . . 17
Diodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Fusible Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Fuel Gauge Sender . . . . . . . . . . . . . . . . . . . . . . . . . 20
Fuel Pump (Workman HDX) . . . . . . . . . . . . . . . . . 21
Temperature Sender (Workman HDX and
HDX--D) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Thermal Fan Switch (Workman HDX and
HDX--D) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Speed Sensor (Workman HDX and HDX--D) . . . 24
Glow Plug Timer (Workman HDX--D) . . . . . . . . . . 25
Delay Timer (Vehicles with 4WD) . . . . . . . . . . . . . 26
High Flow Hydraulics Kit Switch (Vehicles with
High Flow Hydraulics Kit) . . . . . . . . . . . . . . . . . . 26
Hydraulic Solenoid Valve Coil (Vehicles with
High Flow Hydraulics Kit) . . . . . . . . . . . . . . . . . . 27
Rear PTO Switch (Optional Kit) . . . . . . . . . . . . . . 28
SERVICE AND REPAIRS . . . . . . . . . . . . . . . . . . . . . 29
Battery Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Battery Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Battery Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Battery Specifications . . . . . . . . . . . . . . . . . . . . . 30
Battery Removal and Installation . . . . . . . . . . . . 30
Battery Inspection and Maintenance . . . . . . . . . 30
Battery Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Battery Charging . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Tail Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Workman HD Series
Page 8 -- 1
Electrical System
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