display AUDI A4 2000 B5 / 1.G AWM Engine Readiness Code Owner's Guide

01-107

Work step 11: Diagnostic of tank ventilation
valve

- Remove the VAG1788/10 RPM adjuster and
leave engine running at idle.

Test requirement:

Engine running at idle:

Display on VAS5051:
-
Click on - button

Display on VAS5051:
1 - Enter display group Max. input value = 255
- Select function "070" in button field -2- for "display group number 070"
and press Q button to confirm input.
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01-108


Display on VAS5051:
Note:
If test is not initiated or if indication switches from "Test ON" to "Test
OFF", depress accelerator pedal briefly, test will be repeated. - Check specified value in display field -4-.
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01-109


Display fields

1 2 3 4
Display group 070: Diagnostic of tank ventilation valve
Display xx % xx %
---
Indicated Degree tank
ventilation valve is
opened Oxygen
sensor control
Diagnostic
value
Diagnostic condition
Functional
range

Test OFF
Test ON
TVV OK
TVV not OK
Aborted
Specified
value 0 to 99 % less than -7 %
or greater than
7 %
TVV OK
Note


If "TVV not OK" is displayed: Check DTC memory Page 01
-
12
. Check Evaporative Emission (EVAP) canister purge
regulator valve -N80- Page 24
-114

If specified value "TVV OK" is obtained:
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01-110

Work step 12: Diagnostic of Secondary Air
Injection (AIR) system

Test requirement:

Engine running at idle:

Display on VAS5051:
-
Click on - button

Display on VAS5051:
1 - Enter display group Max. input value = 255
- Select function "077" in button field -2- for "display group number 077"
and press Q button to confirm input.
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01-111


Display on VAS5051:
Note:
Secondary Air Injection (AIR) system test lasts approx. 60 seconds. - Depress gas pedal completely (swiftly) and then release it (brief
acceleration of at least 2500 RPM).
- Check specified value in display field -4-.
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01-112


Display fields

1 2 3 4
Display group 077: Secondary Air Injection (AIR) system diagnostic (Bank 1)
Display xxxx/min xx.x
g/s xx %
---
Indicated Engine speed
(RPM) Air
mass Relative air mass bank 1,
Secondary Air Injection (AIR)
system Diagnostic condition
Functional
range
Test OFF
Test ON
System OK
System not OK
Aborted
Specified
value FWD: 740 to
860 RPM
AWD: 760 to
880 RPM 2 to 5
g/s more than -20 % System OK
Note


If "System not OK" is displayed:
Check DTC memory Page 01
-12

If specified value "Syst. OK" is obtained:

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