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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Non AGS Functions




Non AGS Functions

The following features are part of the GS 20 automatic control system - but not AGS specific control features.

Manually Selected Extra Sport Program: Longer delay shift pattern with higher engine RPM. This program is similar to the AGS detected sport program but requires the driver to move the range selector from D to 4th gear or lower.

This program automatically returns to AGS shift program selection when the shifter is returned to the D position.

Engine Warm Up Cycle: Based on the detected engine coolant temperature (CAN), the shift points are raised during cold engine operation. This is implemented to speed up the warm up cycle of the catalytic converter.

Downshift protection: If the driver moves the range selector to a lower gear at higher vehicle speeds, the GS 20 delays the down shift until the road speed drops below a programmed value. This feature protects the powertrain from unnecessary loads ensuring long life operation.