Hyundai R 160 LC-3, Service Manual

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1. CPU controller reads engine coolant temperature through the temperature sensor and when the
engine coolant boils upto 110
Ş
C, it sends overheat warning signal to the cluster and changes mode
set to F mode.
2. If the coolant temperature drops less than 100
Ş
C, the CPU controller returns the mode to the mode
set before. And if mode set is changed during the function, the CPU controller cancels the function.
Even if the overheat prevention function is canceled by mode change, the overheat warning lamp
turns OFF only when the coolant temperature is less than 100
Ş
C.
3. LOGIC TABLE
GROUP 7 ENGINE OVERHEAT PREVENTION FUNCTION
Actuated
Canceled
Overheat warning lamp
- Coolant temperature : Above 110 Ş C
- Coolant temperature : Less than 100 Ş C
- Changed mode set by operator
Ɠ If any of the above conditions is
applicable, engine overheat prevention
function is canceled
- Coolant temperature : Less than 100
Ş
C
- Mode : H, S, L ơ F
- Overheat warning lamp & buzzer : ON
- Reutrn to the mode set before
- Hold on the changed mode
- Overheat warning lamp : OFF
Description Condition Function
Main pump
Pilot pump
EPPR valve
Drive signal
P M
Engine
Coolant
temp sensor
Fuel injection
pump
Accel
actuator
CPU controller
Overheat warning signal
Coolant temperature signal Motor drive signal Potentiometer signal
bar
rpm
TIME
F
H C E
F L S H
POWER MODE
SELECT
ENGINE SPEED TRAVEL SPEED
AUTO
DECEL
H M