Case CX130 - Page 170

5 - 27
ELECTRIC CIRCUIT
CASE TRAINING CENTER
AUGUST 2000
Idle control by battery voltage and coolant solution temperature
The purpose of this function is to prevent the battery becoming discharged or the coolant solution temperature
becoming too low in the event of too long a period at idle speed
1) Circuit configuration
CS00F516
1. Engine electronic control box
2. Engine
3. Engine coolant temperature sender
4. Electronic acceleration
2) Operation
When the idle time is too long and the voltage supplied to the engine electronic control box (1) drops or the
coolant solution temperature (3) is low, the idle speed automatically increases (see figure below).
Adjusting the speed in accordance with battery voltage
NOTE: Numbers in brackets () show values for the CX130.
1
2
3
4
18 22
26
28
700
(800)
800
(900)
900
(1000)
1000
(1100)
1100
(1200)
1200
(1300)
Speed (rpm)
Voltage supplied to the engine
electronic control box (volt)