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1. MCU and ECM (Engine Control Module)
GROUP 13 ENGINE CONTROL SYSTEM
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)
SEE
K
VO
L
MO
DE
CA
LL
MU
TE
V
LCD
1
2
ECM (Engine Control Module)
1 MCU
2 Bolt (M8)
130ZF5MS101
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
Summary of Contents for HX130 LCR
Page 11: ...1 1 SECTION 1 GENERAL Group 1 Safety Hints 1 1 Group 2 Specifications 1 10 ...
Page 174: ...4 5 MEMORANDUM HYUNDAI HEAVY INDUSTRIES CO LTD CONSTRUCTION EQUIPMENT DIV ...
Page 536: ...8 108 125LCR8TM30 Turn casing 1 upside down and remove oil seal 3 using jig 29 ...
Page 566: ...8 138 Remove lock nut 22 and then boot 23 14 36078RL14 2507ARL10 ...