Read measured value block, display group 115, engine idling.
Accelerate vehicle from 2000 RPM to wide open throttle in third gear and watch rev counter.
At approx. 2500 RPM, press print key on VAS5051 or PRINT key on VAG1551 while simultaneously
pressing memory key -M- on VAG1397A.
Fig. 294: Identifying Turbocharger Tester V.A.G 1397 A
Courtesy of VOLKSWAGEN UNITED STATES, INC.
1500 to 1600 mbar
If reading does not match specification, troubleshooting table.
Malfunctions in charge air pressure control
Before performing test, drive vehicle at brisk speed for at least 3 km
without stopping (i.e. along route without traffic lights, etc.).
A second mechanic is required to note readings on tester when vehicle is
moving.
Reading measured value block 115 -->
1 2 3 4
NOTE:
The charge air pressure should be measured using turbocharger tester
VAG1397/A. Vehicle diagnostic, testing and information system VAS5051
or scan tool VAG1551 is used to check whether charge air pressure is
being registered by control module.
Specification for VAG1397A : 1.500 to 1.600 bar
Specification on VAG1551 or VAS5051 in display zone 4:
Reading measured value block 115 -->
1 2 3 4
Malfunction
Possible cause of trouble
2005 Audi A4 Quattro
ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
2:37:37 AM
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