Adjusting accelerator position sender G79 - right-hand drive vehicles without accelerator pedal module — AUDI

Adjusting
accelerator position sender
G79
- right-hand drive vehicles without accelerator pedal module
The
accelerator position sender
G79
must be adjusted after removing and installing either the accelerator position sender
G79
or the cable cam.
Special tools and workshop equipment required
Vehicle diagnostic, testing and information system
VAS 5051B
Procedure
Tightening torque
Chapter
.
Bolt
accelerator position sender
G79
into bracket (removed earlier)
Item
.
Using a strip of sheet metal, make up adjuster tool
1
(with dimension
a
).
Dimension
a
= 13.25 mm.
Fit cable cam
3
loosely on shaft of accelerator position sender.
Bring adjuster tool into contact with thread of lower securing bolt
2
.
Bring cable eye
5
of cable cam into contact with adjuster tool
1
, as shown in illustration.
With components in this position, measure distance between centre of cable eye and top securing bolt
4
. Make sure cable on cable cam is taut while measuring.
Adjust according to distance
b
.
Distance
b
= 65.59 mm.
Secure cable cam in this position.
Install
accelerator position sender
G79
and bracket in vehicle.
Vehicles with automatic gearbox:
Remove accelerator pedal stop from vehicle floor and in its place bolt on accelerator pedal stop for vehicles with manual gearbox.
Accelerator pedal stops for vehicles with manual gearbox: black
Accelerator pedal stops for vehicles with automatic gearbox: grey
All vehicles (continued):
With ignition switched off, connect
vehicle diagnostic, testing and information system
VAS 5051B
with diagnosis lead to diagnosis connection.
Start the engine and run at idling speed.
Display on
VAS 5051B
:
Select
Vehicle self-diagnosis
from the list
item 1
.
Display on
VAS 5051B
:
From menu
1
, select vehicle system
“Engine electronics”
and press
→
key to continue.
Display on
VAS 5051B
:
From menu
1
, select diagnosis function
“Measured values”
and press
→
key to continue.
Display on
VAS 5051B
:
Press keys
6
2
on keypad
1
to select
“Display group 062”
and confirm entry by pressing
Q
key.
Display on
VAS 5051B
:
Check display in display zone
3
.
Press accelerator all the way down and hold in position.
Specification: 72 ... 74 % (accelerator pedal depressed)
If specification is not attained, check installation position of cable cam and adjust if necessary
Anchor
.
Check adjustment again:
Press accelerator pedal down slowly.
Specification: The readout in the display should increase steadily unit it reaches 72 ... 74 % (accelerator pedal fully depressed).
Press
←
key to terminate function
“Measured values”
.
Display on
VAS 5051B
:
From menu
1
, select function
“End output”
and press
→
key to continue.
Switch off ignition and unplug diagnostic connector.
Vehicles with automatic gearbox:
Reinstall accelerator pedal stop for vehicles with automatic gearbox in vehicle floor.
Then check
kick-down switch
F8
:
Display on
VAS 5051B
:
From menu
1
, select vehicle system
“Gearbox electronics”
and press
→
key to continue.
Display on
VAS 5051B
:
From menu
1
, select diagnosis function
“Measured values”
and press
→
key to continue.
Display on
VAS 5051B
:
Press key
1
on keypad
1
to select
“Display group 001”
and confirm entry by pressing key
Q
.
Display on
VAS 5051B
:
Check display in display zone
4
.
Press accelerator pedal all the way down to full-throttle position.
Specification: XXX0 XXXX.
Press accelerator pedal all the way down past kick-down point.
Specification: XXX1 XXXX.
Note
Switching inputs at the locations marked
“X”
can be ignored during this test.
Repeat adjustment procedure if specification is not attained.
Press
←
key to terminate function
“Measured values”
.
Display on
VAS 5051B
:
From menu
1
, select function
“End output”
and press
→
key to continue.
Switch off ignition and unplug diagnostic connector.