● All electrical consumers must be switched off.
● Earth connections OK
Test procedure
Note
◆
The intake air temperature sender -G42- and charge pres-
sure sender -G31- are installed in one common housing in
the charge air pipe.
◆
Only gold-plated contacts may be used when repairing con-
tacts in connector.
– Connect vehicle diagnostic tester, and select engine control
– Select diagnosis function “011-Read measured value block”.
Engine must be idling.
– Select “Display group 7”.
Indicated on display:
Note
The display zones may be shown one below the other or next to
each other on the display of the vehicle diagnostic tester.
– Check intake air temperature value in display zone 3. The
temperature value must correspond approx. to ambient tem-
perature.
– If the value in display zone 3 is not plausible, check intake
air temperature sender and wiring to sender as follows:
– Exit diagnosis function.
– Switch off ignition.
Checking resistance
– Pull 4-pin connector off intake air temperature sender -5-.
Note
The intake air temperature sender -G42- and charge pressure
sender -G31- are installed in one common housing in the
charge air pipe.
Display group 7
xxx.x°C xxx.x°C 20.9°C xxx.x°C
Industriemotoren - Industrial Engines 2009
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Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
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2 Checking components and functions
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