lock AUDI A4 1998 B5 / 1.G EVAP Workshop Manual

20-132


11 -
Connecting hose
LDP / EVAP canisterPressure sideTo remove at LDP, press unlocking tab on
connector
12 -
10 Nm
13 -
Air filter For LDP
14 -
Sealing piece
15 -
Cable tie For mounting connecting hose on wheel
house
16 -
EVAP canister Location: lower front in spare wheel wellRemoving and installing Page 20
-164
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20-140

Checking LDP via Read Measuring Value
Block (vehicles with mechanical throttle
control)

Note:

Always replace O-rings, sealing rings and
gaskets.
Radiator fan must not come on during the
test!

Troubleshooting requirements
DTC memory checked and no DTCs stored
All electrical consumers switched OFF
A/C switched OFF
Intake Air Temperature lower than 90 C
Display group 004, channel 4.

Engine Coolant Temperature less than 95
C Display group 004, channel 3.

Throttle angle less than 10 % Display
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- 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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- Verify that valve on EVAP tester nitrogen
cylinder is open and that cylinder has sufficient
pressure before continuing.

Note:
If gauge still does not read within above range, contact K-Line Customer
Service - Technical Support for additional instructions before continuing.
If gauge leaks down:
If gauge continues to leak down: - Turn fine adjust regulator knob (arrow) until gauge reads 14 in. of
water; tighten lock nut.
- Check flow meter -4-. (upper illustration).
Meter must indicate no flow.
- Turn control valve to "Hold" position.
- Check gauge.
Gauge must hold pressure
- Verify that vehicle interface hose is firmly seated and repeat previous
six steps before continuing.
- Use ultrasonic tester (described later) to locate and repair leak before
continuing.
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