AUDI A6 1997 C5 / 2.G AHA Engine Throttle Valve Control Module Checking Owner's Guide

24-150

Throttle valve control module,
adaptation to Engine Control Module
(ECM)

If the throttle valve control module -J338- is
removed and installed, or replaced, adaptation of
the throttle valve control module to the Motronic
ECM is required.
During "adaptation" with ignition switched on and
the engine not running, the Motronic ECM
"learns" the closed throttle position (CTP), wide
open throttle (WOT) and other positions of the
throttle valve control module, and a characteristic
curve of the relationship between Throttle
Position (TP) sensor -G69- and angle sensor for
throttle drive -G187-.

Required special tools and test equipment

VAG1551 or VAG1552 Scan Tool (ST) with
VAG1551/3 adapter cable

Test conditions
No malfunctions stored in DTC memory
page 01
-16


Throttle valve in closed throttle position; if
necessary adjust accelerator pedal cable
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Repair Manual, Fuel Supply System, Repair
Group 20


Cruise control adjustment OK
Power supply for throttle valve control
module OK; checking page 24
-130

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Test procedure

- Connect VAG1551 or VAG1552 scan tool and
press buttons -0- and -1- to insert "Engine
Electronics" address word 01 (with ignition
switched on; engine not running) page 01
-8 .
Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -4- to select "Basic Setting" function 04, and
press -Q- button to confirm input.
System in Basic Settin
g
HELP
Input displa
y group number XXX

Indicated on display
- Press buttons -0-, -6- and -0- to input display group number 60 (060),
and press -Q- button to confirm input.
System in Basic Setting 60 1 2 3 4

Indicated on display (1-4 display fields)
Notes:
After confirming input of display group 60, adaptation is started. The
Throttle Position (TP)sensor is positioned in the closed throttle, wide
open throttle and limp-home positions. Following this procedure, other
intermediate steps will create a characteristic curve of the relationship
between Throttle Position (TP) sensor -G69- and angle sensor for
throttle drive -G187-. The Motronic ECM stores these values in permanent memory.
Afterward, the throttle valve assumes the starting position.
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- Compare display with specified values (display
fields 1-4):

Display fields

1 2 3 4
Display group 60: Basic setting-throttle valve control module
Display
xxx
xxx
Idle
Part throt
Full throt
Decel
Enrich ADP runs
ADP. OK
ADP. ERROR
Indicates Throttle valve
angle Throttle drive
angle Operating
condition Adaptation condition
Range
0 - 90
--- --- ---
Specified
value 1 - 10
(automatic trans.)
1 - 20
(manual trans.) --- Idle ADP. runs

0 - 5
0 - 5
Idle ADP. OK
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(ADP. ERROR indicates unsuccessful
adaptation)

If displayed values are NOT OK:
- Check DTC memory ( page 01
-16
)
- Check throttle valve control module ( page 24
-128
)
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- End adaptation as soon as possible after 30
seconds by pressing button. If displayed values are OK:

- Press buttons -0- and -6- to select "End Output"
function 06, and press -Q- button to confirm
input.
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