Hyundai HX140L, Manual

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5-9
GROUP 6 AUTOMATIC WARMING UP SYSTEM
CAN #2
Main pump Pilot pump
Engine
ECM
CAN #1
Main control valve
Pump power
shift EPPR
MCU
Drive signal
Cluster
Warming up pilot lamp signal
Warming up
pilot lamp
Hydraulic temp sensor
Normal
CN-16
Emergency
CN-16A
CN-16B
Haptic controller
CLUSTER
AIRCON
OFF
CAN #1 & #2
The MCU receives the engine coolant temperature from the ECM, and if the coolant temperature is
below 30
˚
C, it increases the engine speed from key start rpm to 1100 rpm. At this time the mode
does not change. If the coolant temperature sensor has fault, the hydraulic oil temperature signal is
substituted.
In case of the coolant temperature increases up to 30
˚
C, the engine speed is decreased to key start
speed. And if an operator changes power mode set during the warming up function, the MCU
cancels the automatic warming up function.
LOGIC TABLE
1.
2.
3.
140L5MS08
Description Condition Function
Actuated
- Coolant temperature :
below 30˚C (after engine run)
- Power mode : Default (E mode)
- Warming up time : 10 minutes (max)
- Warming up pilot lamp : ON
Canceled
- Coolant temperature : Above 30˚C
- Warming up time : Above 10 minutes
- Changed power mode set by operator
- RCV lever or pedal operating
- Auto idle cancel
侍#
If any of the above conditions is
applicable, the automatic warming up
function is canceled
- Power mode : set mode
- Warming up pilot lamp : OFF