1)
Details of temperature specifications are not possible. When the engine is cold the fuel, intake air and coolant temperatures must
equate approximately to ambient temperature. If one of the temperature readings is noticeably different, test the relevant sender.
Evaluation: Display group 7, display zone 1 - fuel tempera-
ture
Display shows
Possible cause of fault
Fault remedy
Large deviation
from ambient tem-
perature
◆
Short circuit or fuel temperature send-
er -G81- defective
– -G81- Check.
Evaluation: display group 7, display zone 3 - Intake air tem-
perature
Display shows
Possible cause of fault
Fault remedy
Large deviation
from ambient tem-
perature
◆
Short circuit or intake air temperature
sender -G42- defective
Evaluation: Display group 7, display zone 4 - coolant tem-
perature
Display shows
Possible cause of fault
Fault remedy
Large deviation
from ambient tem-
perature
◆
Short circuit or defective coolant tem-
perature sender -G62-
6.3.7 Display group 10 - Air quantities
Test prerequisites
● Engine running at idling speed.
● Engine warm, coolant temperature not below 80°C.
● Intake air temperature < 40°C.
Display
zone
Operating mode or component
Specification
Evaluation
1
Intaken air mass (actual)
---
2
Atmospheric pressure (ambient pressure)
900...1100 mbar
---
3
Charge pressure (actual)
xxx mbar
---
4
Accelerator position
0.0 %
◆
If accelerator position sender -G79- is
installed
1)
The values displayed at “idling speed” are not relevant.
Evaluation: Display group 10, display zone 4 - accelerator
position
Display shows
Possible cause of fault
Fault remedy
1.0...100.0%
◆
Defective accelerator position sender
-G79-
◆
Open circuit in wiring to -G79-
Industriemotoren - Industrial Engines 2009
▶
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
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6 Measured value blocks, engine codes CPYA, CPYB, CPYC, CPYD, CPYE, CPYF, CPYG
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