Volkswagen CJDA Workshop Manual page 131

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
Large deviation
◆ Short circuit or fuel temperature send-
from ambient tem-
perature
Evaluation: display group 7, display zone 3 - Intake air tem-
perature
Display shows Possible cause of fault
Large deviation
◆ Short circuit or intake air temperature
from ambient tem-
perature
Evaluation: Display group 7, display zone 4 - coolant tem-
perature
Display shows Possible cause of fault
Large deviation
◆ Short circuit or defective coolant tem-
from ambient tem-
perature
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 Operating mode or component
zone
1 Intaken air mass (actual)
2 Atmospheric pressure (ambient pressure)
3 Charge pressure (actual)
4 Accelerator position
◆ 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
1.0...100.0%
◆ Defective accelerator position sender
◆ Open circuit in wiring to -G79-
6 Measured value blocks, engine codes CPYA, CPYB, CPYC, CPYD, CPYE, CPYF, CPYG
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
er -G81- defective
sender -G42- defective
perature sender -G62-
-G79-
Industriemotoren - Industrial Engines 2009 ▶
Fault remedy
– -G81- Check.
Fault remedy
– -G42- Check.
Fault remedy
– -G62- Check.
Specification
1)
xxx mg/H
900...1100 mbar
1)
xxx mbar
0.0 %
Fault remedy
– -G79- Check.
3
⇒ P age 409
⇒ P age 404
⇒ P age 407
Evaluation
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⇒ P age 115
⇒ P age 316
115