Programming and Relearning
Required special tools and test equipment
- VAG 1551 or VAG 1552 Scan Tool (ST) with VAG 1551/3 adapter cable
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
VAG 1551 or VAG 1552 Scan Tool (ST) with VAG 1551/3 adapter cable
Test conditions
- No malfunctions stored in DTC memory.
- Throttle valve in closed throttle position; if necessary adjust accelerator pedal cable.
- Cruise control adjustment OK.
- Power supply for throttle valve control module OK.
Test procedure
- Connect VAG 1551 or VAG 1552 scan tool and press buttons -0- and -1- to insert "Engine Electronics" address word 01 (with ignition switched on; engine not running).
Indicated on display
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -4- to select "Basic Setting" function 04, and press -Q- button to confirm input.
Indicated on display
System in Basic Setting HELP
group number XXX
- Press buttons -0-, -6- and -0- to input display group number 60 (060), and press -Q- button to confirm input.
Indicated on display (1-4 = display fields)
System in Basic Setting 60 ->
1 2 3 4
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.
- Compare display with specified values (display fields 1-4):
- 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.