21-13
Charge air pressure regulation,
checking
Special tools and equipment
or
Test requirement:
WARNING!
VAS 5051 with VAG 5051/1VAG 1551 with VAG 1551/3ACoolant Temperature at least 80 C. During a road test in an airbag-equipped vehicle, test equipment
must always be fastened to and operated from the rear seat by a
second technician. When driving or riding in an airbag-equipped vehicle, NEVER hold
the scan tool or other test equipment in your hands or lap while in
motion. Objects between you and the airbag increase the risk of
injury in an accident.
Pa
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11/21/2002 htt
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21-17
- Check correction factors in display fields 2 to
4.
Display fields
1 2 3 4
Display group 116: Charge air pressure regulation
Display 1 RPM
% % mbar
Indicated Engine speed (RPM)
Correction factor
Fuel Correction factor
Coolant temp. Correction factor
Intake air temp.
Specified value
Note: If display field 2 indicates a correction factor <0
%, fuel quality is probably incorrect.
- Fill tank with prescribed fuel quality.
If display field 3 indicates a correction factor <0
%, coolant temperature is too high (heat warning
lamp lit in instrument cluster) or the Engine
Control Module is receiving an incorrect
temperature signal from the instrument cluster.
- Check coolant temperature display.
Pa
ge 19 of 37 Char
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ystem with turbochar
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11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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e=re
pair&id=AUDI.B5.GE05.21.1
