Circuit Operation

The Electronic Transmission Control System (AEGS) contains 3 transmission modes to provide smooth refined shifts through the interaction of transmission and engine electronics. Transmission operates the selected gear and does not shift up or down automatically. The Electronic Transmission Control System (AEGS) has the following components:

• Automatic Transmission Range Switch.
• Check Control Module.
• Electronic Transmission Control Unit (AEGS).
• Instrument Cluster.
• Kick-Down Prevent Relay.
• Motronic Control Unit.
• Program Switch.
• Idle Switch.
• Transmission.
• Transmission Kick-Down Switch.

By operating program switch, driver can select 3 transmission modes: ECONOMY, MANUAL, and SPORT. When E (ECONOMY) is selected, terminal No. 14 of the AEGS is momentarily grounded through the switch to terminal No. 6 of AEGS control unit. When S (SPORT) is selected, terminal No. 4 of control unit is momentarily grounded through the switch to terminal No. 6 of the control unit. Fourth gear is not selected and first, second, and third gears are kept engaged up to a higher engine speed. When ignition switch is turned off, then to run, control unit automatically selects E (ECONOMY).