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9) MACHINE CONTROL UNIT (MCU)
(1) This consists of electronic parts and controls all lamps and buzzers
on the cluster in accordance with signals transmitted from the
switches, the ECM, TCU, the engine and the hydraulic pressure
sensors.
(2) Three LED lamps on the MCU display as below.
LED lamp
Trouble
Service
G
*1
is turned ON
Normal
-
G and R
*2
are turned ON
Trouble on MCU
• Change the MCU
G and Y
*3
are turned ON
Trouble on serial communi-
cation line
• Check if the serial commu-
nication lines between the
controller and the cluster
are disconnected
Three LED are turned OFF Trouble on MCU power
• Check if the input power
wire (24 V, GND) of control-
ler is disconnected
• Check the fuse
*1
: Green
*2
: Red
*3
: Yellow
10) TRANSMISSION CONTROL UNIT (TCU)
(1) The control unit is shifting to the required gears fully-automatically
giving consideration to the following criteria:
• Gear selector lever position
• Driving speed
• Load level
11) ENGINE CONTROL MODULE (ECM)
(1) The engine control module (ECM) is the control center of the en-
gine system.
12) CONTROL UNIT (electro hydraulic & joystick steering, EHCU)
(1) The control unit is the control center of the EH control lever and joy-
stick steering system.
LED
77073CDS91
7707A3CD03
3-74
Summary of Contents for HL930A
Page 1: ...WHEEL LOADER OPERATION MAINTENANCE MANUAL HL930A HL930A XT Serial No ...
Page 2: ......
Page 4: ......
Page 25: ...1 CALIFORNIA PROPOSITION 65 SAFETY HINTS 1 1 ...
Page 133: ...13 REAR CAMERA option 1 The rear camera is available as a option Refer to page 3 39 3 75 ...
Page 147: ...15 CAMERA MONITOR OPTION 3 89 ...
Page 149: ... 2 Interlocked with other devices 3 91 ...
Page 150: ... 3 Operation scenario Single camera mode 3 92 ...
Page 151: ... 4 Operation scenario AAVM mode 3 93 ...
Page 152: ... 5 AAVM view mode type 3 94 ...
Page 153: ... 6 Function menu tree Single cam mode 3 95 ...
Page 154: ... 7 Function menu tree AAVM mode 3 96 ...
Page 155: ... 8 Parking guide line adjust 3 97 ...
Page 156: ... 9 How to set function menu 3 98 ...
Page 157: ... 10 Composition of menu screen 3 99 ...
Page 158: ... 11 Value adjustment 3 100 ...
Page 159: ... 12 When radar mounted monitor display 3 101 ...
Page 160: ......
Page 260: ...9 2 ...
Page 261: ......
Page 262: ...EN English E1 September 2020 PART NO 91WA 32040 ...