3. Electric System
3-14
(3) List of CN4 terminal function (40 pins)
Pin No. Line
color
Connection Function
CN4-82 W Common rail pressure sensor SP
terminal
It detects common rail pressure (fuel pressure).
It detects fuel pressure in common rail and it
converts it voltage signal and inputs it. It is used
for fuel injection control.
Pressure detecting voltage signal is high, when
pressure is high, and it is low, when pressure is
low.
CN4-83 Y/G Fuel temperature sensor
It detects fuel temperature.
Fuel temperature sensor changes resistance
value according to change of internal thermistor
temperature.
ECM detects voltage which changes according to
temperature change and it counts fuel
temperature and uses it for control of supply
pump. Voltage is low, when fuel temperature is
high and resistance is little, and it is high, when
fuel temperature is low, and resistance is large.
(Resistance of thermistor is little, when
temperature is high, and it is large, when
temperature is low.)
CN4-84 R/B Engine coolant temperature (ECT)
sensor
It detects engine coolant temperature.
It detects voltage which changes according to
resistance and then it counts engine coolant
temperature, used for emergency stop
determination.
CN4-85
-
NIL
CN4-86
-
NIL
CN4-87
R
Cam angle sensor
Power supply (DC5V) for left sensors.
R
Common rail pressure sensor VCC
terminal
L
EGR motor position sensor power
supply terminal
CN4-88
-
NIL
CN4-89 R/B Suction control valve (SCV)
Grounding
CN4-90 W Common rail pressure sensor SP
terminal
It detects common rail pressure (fuel pressure).
It detects fuel pressure in common rail and it
converts it voltage signal and inputs it. It is used
for fuel injection control.
Pressure detecting voltage signal is high, when
pressure is high, and it is low, when pressure is
low.
CN4-91 L Boost pressure sensor OUT
terminal
It detects engine intake pressure (boost).
It counts intake air pressure (boost) from
detected voltage signal for fuel injection control.
Voltage is high, when pressure is high, and it is
low, when pressure is low.
CN4-92 G/Y EGR motor posision sensor W
terminal
It detects valve lift of EGR (exhaust, gas,
re-circulation) valve.
CN4-93 G/W EGR motor posision sensor V
terminal
CN4-94 G/B EGR motor posision sensor U
terminal
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Summary of Contents for PDS400S-6C3
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Page 20: ...1 Specification 1 14 1 8 Fuel Piping PC13053E D i s c o u n t E q u i p m e n t c o m ...
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