Removing and installing pressure differential sender G505 — VW

Removing and installing
pressure differential sender
G505
Note
Pressure differential sender
G505
determines charge status of particulate filter. It can be connected via two lines before and after the particulate filter, or with just one line before the particulate filter. In this case, the pressure transducer measures the ambient pressure with an open line and calculates the pressure difference.
Note
Pressure differential sender
G 505
determines charge status of particulate filter.
Removing
Fitting location
Chapter
Remove engine cover panel
Chapter
.
Open plug-in connectors
A
and
B
of fuel lines and pull fuel lines off. Disconnect plug-in connectors
Fuel supply - diesel engines
Rep. gr.
20
Disconnecting plug-in connectors
.
WARNING
Danger of scalding from very hot fuel.
In extreme cases, the temperature of the fuel and the fuel lines can reach 100°C after the engine is switched off. Allow the fuel to cool down before disconnecting the lines - danger of scalding.
Wear protective gloves.
Wear eye protection.
Unclip fuel lines from bracket for
pressure differential sender
G505
.
Unclip lines
1
and lay them to one side.
Release and unplug electrical connector
2
from
pressure differential sender
G505
.
Unscrew bolt
4
and remove bracket towards rear.
Remove bolt
3
.
Remove
pressure differential sender
G505
from bracket.
Unscrew securing bolts
1
and remove bracket.
Remove clips from both hoses.
Pull hoses carefully and straight off connecting pieces (connecting pieces break off pressure sensor very easily).
Installing
Install in reverse order. In the process, note the following:
Note
Before installing, blow out control lines of
pressure differential sender
G505
to particulate filter with compressed air towards particulate filter (blocked or iced up due to condensation).
Make sure that hoses are securely fitted and seal properly.
If pressure hoses have been detached from particulate filter, tighten
Chapter
.
Adaptation must be performed after renewing
pressure differential sender
G505
and/or particulate filter. (The procedure is also described under Guided Functions).
Select correct vehicle in guided fault finding.
GoTo
button.
Press
Function/component selection
.
Select
Drive
.
Select respective engine code.
01 - Self-diagnosis compatible systems
01 - Diesel direct injection and glow plug system EDC 17
01 - Functions
01 - Reset programmed values of differential pressure sender of diesel particulate filter (DPF)
Specified torques
Chapter
“
Assembly overview - particulate filter
”
Component
Specified torque
Bracket to engine mounting
20 Nm