brake AUDI A4 1998 B5 / 1.G Cruise Control On Board Diagnostic Workshop Manual

01-205

Rapid data transfer
Q
08 - Read Measuring Value Block

Indicated on display
- Press -Q- button to confirm input.
Read Measurin
g Value Block
HELP
Input display group number XXX

Indicated on display
The measured value block which has been selected will appear in the
standard format.
Display group overview - Enter display group number 066.
The engine should be idling.
- Press -Q- button to confirm input.
Display group
number Display fields
066 1
= Actual vehicle speed km/h
2
= Switch positions of brake, clutch and cruise
control (open or closed)
3
= Desired vehicle speed km/h
4
= Control lever switch positions
Pa
ge 3 of 13 Cruise control On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE01.01.3

01-206
Display group 066 Read Measuring Value Block 66

Indicated on display
km/h X X X X km/h X X X X

Control lever switch positions
0 0 0 0 = Cruise control off (switch engaged)
0 0 1 1 = Cruise control on
0 0 0 1 = Cruise control off before engagement position
0 1 1 1 = Fix button pushed
1 0 1 1 = Record button pulled


Desired vehicle speed (speed last saved is displayed until):
Cruise control is switched off at control lever, i.e. switch is engaged on "OFF" orEngine is stopped.
Switch positions for brakes, clutch and cruise control released.
1 0 0 0 = Cruise control released
1 0 1 1 = Brake applied (brake pedal switch)
1 1 0 0 = Clutch applied
Actual vehicle speed
Pa
ge 4 of 13 Cruise control On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE01.01.3

01-207

Read Measuring Value Block 66
0 km/h
1 0 0 0
0km/h
0 0 0 0

Indicated on display
Checking displays in display fields 2 and 4
Read Measuring Value Block 66
0 km/h
1 0 0 0
0km/h
0 0 0 0

Display check, display field 2
If the nominal value in display field 2 for "cruise control released" (1000) is
not attained:
Repair Manual, Fuel Injection & Ignition, Repair Group 01
Test conditions
Display field 2
Cruise control released (activated) 1000
Brake applied (brake pedal switch) 1011
Clutch applied 1100
- Check engine control module identification.- If "G" is not displayed after component name, cruise control is not
activated. Activate cruise control system Page 01
-209
.
Pa
ge 5 of 13 Cruise control On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE01.01.3

01-212

- Disconnect 15-pin harness connector for cruise
control switch, clutch vacuum vent valve switch -
F36- and to brake vacuum vent valve switch -
F47- for cruise control.

- Check the following connections for a short to
positive, short to Ground (GND) or an open
circuit:

Gasoline engine: 2.7 liter/184 kW V6 twin-
turbo

Terminals on 15-pin
harness connector VAG1598/31 breakout
box, socket
7 76
8 75
9 57
10 38

- If necessary, repair open or short circuit.
Pa
ge 12 of 13 Cruise control On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE01.01.3

01-213

Terminals on 15-pin
harness connector VAG1598/31
breakout box,
socket
13
to clutch vacuum vent valve
switch -F36- (terminal 1) 39
11
to brake vacuum vent valve
switch -F47- for cruise
control (terminal 2) 56
12
to brake vacuum vent valve
switch -F47- for cruise
control (terminal 4) 55

- If necessary, repair open or short circuit.
Pa
ge 13 of 13 Cruise control On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE01.01.3