Function 04 - Engine Basic Adjustment

FUNCTION 04

ENGINE BASIC ADJUSTMENT, USING VAG 1551 SCAN TOOL

Display Group 01 channel 9 NO LONGER shows the CO adjustment value, instead IT NOW shows the learning requirement adaption.

If display is 0:
Adaptive learning in the closed and partially open throttle position is in progress.

If the display is 3 or greater:
Adaptive learning for the idle speed has been completed.

Note:

^ When basic adjustment is initiated, the learning requirement display in channel 9 is always set to 0 and the learning procedure is re-initiated.

^ If the ECM is removed or the battery is disconnected, all learned values in the ECM are erased. Shortly thereafter rough idling can occur. In which case let the engine idle for a few minutes until the learning requirement is 2 or greater.

^ Then, roadtest the vehicle to establish learning in the other engine speed ranges.