Volkswagen CJDA Workshop Manual page 128

3
Industriemotoren - Industrial Engines 2009 ▶
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
◆ 34 - Charge pressure positioner
◆ 99 - Exhaust gas temperature sender
◆ 100 - Diesel particulate filter, exhaust gas temperature, dif-
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ferential pressure
◆ 108 - Diesel particulate filter regeneration 8
6.3.1 Display group 1 - Injected quantity
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 Engine speed
2 Average injection quantity
3 Pressure in high-pressure fuel system
(actual)
4 Coolant temperature
Evaluation: Display group 1, display zone 2 - quantity injec-
ted
Display shows Possible cause of fault
Below specification
◆ Injectors for cylinders 1...4
Above specification
◆ Engine too cold
◆ Shortage of fuel
◆ Air in fuel system
◆ Injectors for cylinders 1...4
6.3.2 Display group 2 - Idling speed
Test prerequisites
● Engine running at idling speed.
● Engine warm, coolant temperature not below 80°C.
● Intake air temperature < 40°C.
112
Repair Group 01 - Vehicle self-diagnosis
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119,
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121,
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-N30...N33- defective
-N30...N33- defective
121,
Specification
880...1090 rpm
6.5...12.0 mg/stroke
320.0...780.0 bar
80.0...110.0°C
Fault remedy
– -N30...N33- Check.
– Run engine at increased speed to
warm up, and repeat test
– Check fuel supply system
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parts of fuel supply system
– Bleeding fuel system
– -N30...N33- Check.
Evaluation
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⇒ P age 112
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⇒ P age 398
298, removing and installing
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383.
⇒ P age 398