Doosan D55C-5 - Page 181

D439E Service Manual 4. Fuel system
179
Input/output signal
Pin
NO.
Check items Condition
Type
LEVEL
(normal → operating)
Remarks
30 NA
31 NA
IG. ON(20℃) Analogue Above 0.791V
32
Intake air temperature
sensor
IG. ON(40℃) Analogue Below 0.406V
0.116KΩ ~
48.14 KΩ
33 NA
34 NA
35 +B FOR FLYBACK IG ON DC Battery voltage
36 NA
37 NA
38 NA
39
Engine RPM sensor shield
ground
DC Below 0.5V
40 Engine RPM sensor + Engine drive Sine wave
41 Engine RPM sensor - Engine drive Sine wave
42 -
43 Overheat warning lamp
Coolant
temperature
above 115
DC
Battery voltage > below
0.5V
44 NA
45 Glow lamp IG ON DC
Battery voltage > below
0.5V
46 Key switch IG ON DC
below 0.5V > Battery
voltage
47 NA
48 Starter switch At starting DC
below 0.5V > Battery
voltage
49
50 -
51
52 NA
53
54
Booster pressure sensor
GND
DC Below 0.5V
55
Coolant temperature, Fuel
temperature, Intake air
temperature
DC Below 0.5V
56 Key switch DC
Below 0.5V > battery
voltage
57
Booster pressure sensor
power
IG ON DC 5V