buttons AUDI A4 1998 B5 / 1.G EVAP Workshop Manual
[x] Cancel search | Manufacturer: AUDI, Model Year: 1998, Model line: A4, Model: AUDI A4 1998 B5 / 1.GPages: 65, PDF Size: 0.77 MB
Page 17 of 65
20-142
- Press 0 and 1 buttons to select Address word
01: "Engine electronics".
- Press Q button to enter input.
-
Press button.Rapid data transfer
HELP
Select Function XX
Display will appear as shown
- Press 0 and 8 buttons to select Function 08: "Read measuring value
block"
- Press Q button to enter input.
Read measurin
g value block
Enter displa
y group number XXX
Display will appear as shown
- Press 0, 7 and 1 buttons to select "display group 71".
- Press Q button to enter input.
Read measuring value block Reed closed
break
Test OFF
Display will appear as shown
Note:
Condition for continuing test is "Reed closed" on the display.The display does not always show "Abort".If the display: "reed open" appears: Briefly open the filler cap to
reduce pressure - this will close the reed contact. Continue checking
as follows:
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Page 18 of 65
20-143
- Press 0 and 4 buttons to select Function 04:
"Basic Setting". System in basic adjustment 71 Reed closed
Test ON
Display will appear as shown
The EVAP canister valve is opened to allow pressure relief in the
system. Then the LDP -V144 will be triggered. The total procedure lasts approx. 60 seconds.
-
Press button .
System in Basic Adjustment 71 Reed open
Syst.Test
Test ON
Display will appear as shown
The system makes a test, the LDP -V144 starts running and shuts off
when the pump running time reaches a pre-determined time-out. The total procedure lasts approx. 60 seconds.
System in Basic Adjustment 71 Reed open
Measurement
Test >ON
Display will appear as shown
Measurement phase begins. The LDP -V144 is switched off and the
ECM checks whether the reed contact has closed within 10 seconds.
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Page 19 of 65
20-144
If NO System in Basic Adjustment 71 Reed open
Messg. END
Syst.OK
Display will appear as shown
If contact does not close within 10 seconds
The system is sealed and the measurement is ended.
-
Press button.
- Press 0 and 6 buttons to select Function 06: "End output"
- Press Q button to enter input.
The LDP -V144 performs 4 pump strokes. The ECM compares the
time it takes to carry out the pump strokes and the time until the reed
contact closes again.
System in Basic Adjustment 71 Reed clos fine leak Messg. ENDSyst.n OK
Display will appear as shown
The system has recognized a fine leak ( greater than 1 mm).
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