Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Function of Electronic Transmission Control

FUNCTION
- The electronic transmission control (ETC) makes possible an accurate adjustment of the pressures to the respective operating conditions and engine power during the shift phase which results in a significant improvement in shift quality. It is possible to reach the engine speed limit in the individual gears at wide open throttle and kickdown. The selector lever positions can be changed in the forwards gears while driving, but the electronic transmission control prevents an unacceptably high engine speed by means of a downshift protection device.

- Furthermore it has the advantage of flexible adaptation to the various vehicle and engine versions. The driver can choose between the two driving programs S (normal driving program) and W (winter driving program), there also being different ratios for reverse gear.

Also Refer To:
- Transmission Control Module. Transmission Control Module
- Selector Lever Positions. Summary of Selector Lever Positions
- Emergency Running Mode. Function of Emergency Running Mode