◆
Always switch off the ignition before connecting or discon-
necting injection and glow plug system wiring or tester ca-
bles.
◆
If the engine is to be turned at starter speed without starting,
e.g. to check compression, pull connector -A- off injectors.
◆
Disconnecting and connecting the battery must only be done
with the ignition switched off, otherwise the engine control
unit could be damaged.
Note the following if testers and measuring instruments have to
be used during a road test:
◆
The test and measuring equipment must always be secured
and operated by a 2nd person.
5.2
Reading measured value block
Note
The measured values in the diagnosis function “011-Read
measured value block” are described in the sections for check-
ing the individual components. This table serves only as an
overview.
Test prerequisites
● Fuses must be OK.
● The battery voltage must be at least 11.5 V.
● Earth connections OK
● All electrical consumers must be switched off.
● No faults must be stored in event memory
event memory.
● Coolant temperature must be at least 80°C,
⇒
display group
1, display zone 4.
Test procedure
– Start engine and run at idling speed.
– Connect vehicle diagnostic tester, and select engine control
unit.
– Select diagnosis function “011-Read measured value block”.
Note
The “Display group 1” is an example to illustrate the procedure.
– Select “Display group 1”.
Indicated on display: (1…4 = display zones)
Note
The display zones may be shown one below the other or next to
each other on the display of the vehicle diagnostic tester.
– To change to another display group proceed as follows:
Display group 1
1 2 3 4
3
Industriemotoren - Industrial Engines 2009
▶
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
94
Repair Group 01 - Vehicle self-diagnosis