Group 7 Engine Overheat Prevention System - Hyundai HX140L Manual

GROUP 7 ENGINE OVERHEAT PREVENTION SYSTEM

Engine
Emergency
warning lamp
Cluster
Hydraulic temperature
warning lamp
1. If the engine coolant temperature or the hydraulic oil temperature is overheated over 100
warning lamp is ON and the pump input torque or the engine speed is reduced as below logic table.
2. LOGIC TABLE
Description
Activated
First step
warning
Canceled
Activated
Second step
warning
Canceled
Main control valve
ECM
MCU
Overheat warning signal
CAN #1 & #2
Condition
- Coolant temperature :
Above 103˚C
- Hydraulic oil temperature :
Above 100˚C
- Coolant temperature :
Less than 100˚C
- Hydraulic oil temperature :
Less than 95˚C
- Coolant temperature : Above 107˚C
- Hydraulic oil temperature : Above 105˚C
- Coolant temperature :
Less than 103˚C
- Hydraulic oil temperature :
Less than 100˚C
Main pump Pilot pump
Pump power
shift EPPR
Hydraulic temp signal
Drive signal
CAN #2
- Warning lamp : ON , buzzer : OFF
- Pump input torque is reduced.
- Warning lamp & buzzer : ON
- Pump input torque is reduced.
- Return to pre-set the pump absorption
torque.
- Emergency warning lamp pops up on the
center of LCD and the buzzer sounds.
- Engine speed is reduced after 10 seconds.
- Return to pre-set the engine speed.
- Hold pump absorption torque on the first
step warning.
5-10
Hydraulic temp sensor
Haptic controller
Emergency
CN-16B
CN-16A
CN-16
Normal
Function
140L5MS09
C, the
˚