◆
34 - Charge pressure positioner
,
◆
99 - Exhaust gas temperature sender
◆
100 - Diesel particulate filter, exhaust gas temperature, dif-
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
zone
Operating mode or component
Specification
Evaluation
1
Engine speed
880...1090 rpm
---
2
Average injection quantity
6.5...12.0 mg/stroke
3
Pressure in high-pressure fuel system
(actual)
320.0...780.0 bar
---
4
Coolant temperature
80.0...110.0°C
---
Evaluation: Display group 1, display zone 2 - quantity injec-
ted
Display shows
Possible cause of fault
Fault remedy
Below specification
◆
Injectors for cylinders 1…4
-N30...N33- defective
– -N30...N33- Check.
Above specification
◆
Engine too cold
– Run engine at increased speed to
warm up, and repeat test
◆
Shortage of fuel
◆
Air in fuel system
– Check fuel supply system
, removing and installing
parts of fuel supply system
– Bleeding fuel system
.
◆
Injectors for cylinders 1…4
-N30...N33- defective
– -N30...N33- Check.
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.
3
Industriemotoren - Industrial Engines 2009
▶
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
112
Repair Group 01 - Vehicle self-diagnosis