Volkswagen CJDA Workshop Manual page 464

3
Industriemotoren - Industrial Engines 2009 ▶
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
– Pull3-pin connector -1- off exhaust pressure sensor 1
-G450-.
– Connect multimeter to contacts 1 + 2 of connector using test
leads from -V.A.G 1594- to measure voltage.
– Switch on ignition. Specification: at least 4.8... 5.2 V
– Switch off ignition.
If the specification is not attained:
– Check wiring of exhaust gas pressure sensor 1 as follows:
– Using adapter cable -V.A.G 1598/39-2-, connect test box
-V.A.G 1598/42- to wiring harness of control unit
The engine control unit is not connected by this action.
– Check wiring between test box and connector for open cir-
cuit referring to current flow diagram.
◆ Contact 1 + socket 14
◆ Contact 2 + socket 79
◆ Contact 3 + socket 34
● Cable resistance: max. 2.0 Ω
– Also check wiring for short to one another, short to battery
earth/engine earth and short to battery positive. Specifica-
tion: ∞ Ω.
If no wiring fault is detected and voltage was present between
contacts 1 + 2:
– Renew exhaust gas pressure sensor 1 -G450-
Assembly overview - diesel particulate filter.
– Adapt new exhaust gas pressure sensor 1 -G450-
⇒ P age
420.
– Then, read event memory of engine control unit, and clear
event memory if necessary
If no wiring fault is detected and no voltage was present be-
tween contacts 1 + 2:
– Pull connectors off any components, which are connected to
this voltage supply line
– Check voltage supply and wires on these components.
If no wiring fault is detected and no voltage was present on
these components:
448 Repair Group 26 - Exhaust system
⇒ P age
26, readevent memory.
⇒ P age
486, current flow diagrams.
⇒ P age
24.
⇒ P age
427,