Condition for fault identification

Test condition:

The fault is recognized when the monitored pressure is 90 hPa below the specified pressure while the wastegate's pulse-duty factor is simultaneously too high.

Potential problem source(s):

• Boost-pressure sensor 2 is defective
• Defect in vacuum converter for wastegate valve 2
• Wastegate valve 2 is defective (seized in open position)

Terminal condition: none

Voltage condition:

• None

Temperature condition:

• None

Time condition:

• None

Other conditions:

• Engine speed > 1900 RPM
• A load must be applied to ensure that the turbocharger boost will be within a specific closed-loop control range (specified pressure ratio at compressor greater than 1.25 to 1.8 and less than 1.7 to 2.5, in both cases as characteristic curve over engine RPM)