brake AUDI A4 2000 B5 / 1.G AWM Engine Output Diagnostic Test Mode Workshop Manual

01-52
Output Diagnostic Test Mode (DTM) activates
the following components in the specified
sequence:

Activation sequence
1 Evaporative Emission (EVAP) canister purge
regulator valve -N80-
2 Secondary Air Injection (AIR) solenoid valve
-N112-
3 Secondary Air Injection (AIR) pump relay -
J299-
4 Wastegate bypass regulator valve -N75-
5 Camshaft adjustment
6 Leak Detection Pump (LDP) tank ventilation
system
7 Recirculating valve for turbocharger -N249-
8 Cylinder 1 fuel injector -N30-
9 Cylinder 3 fuel injector -N32-
10 Cylinder 4 fuel injector -N33-
11 Cylinder 2 fuel injector -N31-
12
Brake system vacuum pump
1)

1) Only vehicles with automatic transmission

Test requirement:
Pa
ge 2 of 16 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU07.01.3

01-64

Activate brake system vacuum pump
1)

1) Only vehicles with automatic transmission

-
Press button

Display on VAS5051:
If the vacuum pump for brake booster does not start up in intervals:
Repair Manual, Brake System, Repair Group 47
A - 12. Actuator in test
12 - Brake system vacuum pump
The vacuum pump for brake booster on right at firewall must start
up in intervals for approx. 1 minute, unless the button is
pressed first to end On Board Diagnostic (OBD).
- Check vacuum pump for brake booster:
Pa
ge 15 of 16 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU07.01.3