5-53
1. MCU and Engine ECM
1. MCU and Engine ECM (Electronic Control Module)
GROUP 14 ENGINE CONTROL SYSTEM
GROUP 14 ENGINE CONTROL SYSTEM
2. MCU ASSEMBLY
2. MCU ASSEMBLY
To match the pump absorption torque with the engine torque, MCU varies EPPR valve output
pressure, which control pump discharge amount whenever feedbacked engine speed drops under
the reference rpm of each mode set.
Three LED lamps on the MCU display as below.
1)
2)
1
LED
2
CN
-51
CN
-52
ECM(Engine control module)
1
MCU
2
Bolt
(M8)
145LCR5MS01
G : green, R : red, Y : yellow
LED lamp
Trouble
Service
G is turned ON
Normal
-
G and R are turned ON
Trouble on MCU
·
Change the MCU
G and Y are turned ON
Trouble on serial
communication line
·
Check if serial communication
lines between MCU and cluster are disconnected
Three LED are turned OFF Trouble on MCU power
·
·
Check if the input power wire (24 V, GND) of MCU
is disconnected
Check the fuse
Содержание HX145 LCR
Страница 11: ...SECTION 1 GENERAL SECTION 1 GENERAL Group 1 Safety Hints 1 1 Group 2 Specifications 1 10...
Страница 204: ...4 5 MEMORANDUM HYUNDAI HEAVY INDUSTRIES CO LTD CONSTRUCTION EQUIPMENT DIV...
Страница 553: ...8 82 Insert O rings to the relief valve 30 and reassemble them to rear cover 20 This completes assembly 17 32038SM42...
Страница 627: ...8 155 125LCR8TM30 Turn casing 1 upside down and remove oil seal 3 using jig 29...
Страница 636: ...8 164 125LCR8TM61 After assembling spring 44 in order clamp plug 41 Tightening torque 5 kgf m 36 lbf ft 31...
Страница 657: ...8 185 8 185 Remove lock nut 22 and then boot 23 14 36078RL14 2507ARL10...
Страница 668: ...8 196 14 15 3 Install cover 3 to body 1 and tighten bolts 14 Torque 10 12 5 kgf m 72 3 90 4 lbf ft 7 21078DA10...