SECTION 2 SYSTEM —CONTENTS— Group 1 Control System Group 4 Electrical System General ....................................................T2-1-1 Outline .....................................................T2-4-1 Engine Control .........................................T2-1-6 Pump Control .........................................T2-1-15 Main Circuit ..............................................T2-4-2 Electric Power Circuit ...............................T2-4-3 Transmission Control .............................T2-1-20 Indicator Light Check Circuit.....................T2-4-4 Other Controls........................................T2-1-41 Accessory Circuit......................................T2-4-5 Control by Electric and Hydraulic Preheat Circuit .........................................T2-4-6 Group 2 ECM System Combined Circuit..................................T2-1-51 Starting Circuit..........................................T2-4-8 Charging Circuit .....................................T2-4-12 Serge Voltage Prevention Circuit ............T2-4-16 Outline .....................................................T2-2-1 Engine Stop Circuit.................................T2-4-18 Fuel Injection Control ...............................T2-2-2 Engine Start Control .................................T2-2-4 Lamplight Circuit ....................................T2-4-19 Other Controls..........................................T2-2-5 Group 3 Hydraulic System Head Light Circuit...................................T2-4-20 Turn Signal Circuit..................................T2-4-24 Brake Light Circuit..................................T2-4-25 Outline .....................................................T2-3-1 Hazard Light Circuit................................T2-4-26 Main Circuit ..............................................T2-3-2 Horn Circuit ............................................T2-4-27 Pilot Circuit.............................................T2-3-13 Reverse Light/Buzzer Circuit ..................T2-4-28 Parking Brake Circuit..............................T2-4-30 Hydraulic Drive Fan Circuit.....................T2-3-32 Steering Circuit.......................................T2-3-26 Emergency Steering Check Circuit (Optional) ..................................T2-4-32 4GDT-2-1