GLI L4-2.0L Turbo (CCTA) (2008)
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Connect vehicle diagnosis tester - 1 - as follows:
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Connect diagnostic cable - 2 - to Data Link Connector (DLC) in driver footwell.
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Switch ignition on.
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On the following screens, select:
Vehicle Self-Diagnosis
01 - Engine Electronics
011 - Measured Values
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Enter 140 and confirm with Q.
The current value is displayed in field 3, which the fuel pressure sensor G247 reports to the vehicle.
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Switch digital manometer VAS 6394/1 on by quickly pressing button - A - one time.
NOTE: Holding button - A - for 2 seconds switches on the illumination for 20 seconds.
The digital manometer VAS 6394/1 should display 0 bar; if this is not the case, then press button - C - one time quickly to set it back to zero.
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Connect digital manometer VAS 6394/1 pressure line to adapter VAS 6394/2.
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Start engine and run at idle speed.
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Compare the displayed digital manometer VAS 6394/1 pressure with current value of the vehicle diagnostic tester:
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Pressures may differ from each other up to 5 bar.