– Check wiring between test box and connector for open cir-
cuit referring to current flow diagram.
◆
Contact 1 + socket 25
◆
Contact 2 + socket 41
◆
Contact 3 + socket 53
◆
Contact 4 + socket 49
◆
Contact 5 + socket 34
● Cable resistance: max. 2.0 Ω.
– Additionally check wires for short to one another. Specifica-
tion: ∞ Ω
If no wiring fault is detected and voltage was present between
contacts 1 + engine earth and contacts 1 + 3:
– Renew throttle valve module -J338-
.
– Adapt throttle valve module -J338-
– Then, read event memory of engine control unit, and clear
, read event memory.
If no wiring fault is detected and no voltage was present be-
tween contacts 1 + engine earth and contacts 1 + 3:
– Pull connectors off any components which are connected to
, current flow diagrams.
– Check voltage supply and wires on these components.
If no wiring fault is detected and no voltage was present on
these components:
– Renew engine control unit -J623-
.
3
Engine control unit -J623-
WARNING
Adhere to the general safety regulations and the notes on
repair work on the engine!
Checking voltage supply for engine control unit
.
Adapting exhaust gas pressure sensor 1 -G450-
.
Reading injector delivery calibration values/injector voltage cali-
bration values, and storing them in engine control unit
Adapting engine control unit -J623- to position sender for
charge pressure positioner -G581-
Adapting engine control unit -J623- to exhaust gas recirculation
valve
.
Adapting engine control unit -J623- to throttle valve module
-J338-
3
Industriemotoren - Industrial Engines 2009
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Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
416
Repair Group 23 - Mixture preparation - injection