Test requirements

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Engine at idle
Coolant temperature greater 85 °C (Display group 4, display field 3)
Intake air temperature less 95 °C (Display group 4, display field 4)

When indicated on display

Fig 1: VAG 1551 Scan Tool Display - Diagnosis Of Tank Leak Test (1 Of 2)

Courtesy of AUDI OF AMERICA, INC.

Press buttons -0-, -7- and -1- to select "display group 071" and press -Q- button to confirm input.

When indicated on display

Fig 2: VAG 1551 Scan Tool Display - Diagnosis Of Tank Leak Test (2 Of 2)

Courtesy of AUDI OF AMERICA, INC.

During test "Test ON" displayed in display field 4. Continue to hold test conditions until a diagnostic result is displayed in display field 4.

Check specified value in display field 4:

NOTE:

Test duration for tank leak test takes approximately 60 seconds.
Should the diagnosis be repeated several times, open fuel filler cap each time to release pressure in tank.

DISPLAY GROUP 071: DIAGNOSTIC OF TANK LEAK TEST

	Display fields
	1	2	3	4
Display group 071: Diagnostic of tank leak test
Display	Reed open	-	System Test	Test ON
Indicated	Condition Reed-contact	malfunction message	System condition	Diagnostic condition and Diagnostic result
Work range	Reed open Reed closed	Small leak Large leak Syst. not OK	System Test Measurement Measurement END	Test OFF Test ON Syst. OK Syst. not OK Abort
Specified value	Reed open	-	Measurement END	Syst. OK
Note				If "Syst. not OK" is displayed: Check DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING .

If specified value in display field "System OK" is reached:

Press -C- button.