October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Throttle Opener Control

When air conditioner is on, engine speed is increased by changing the throttle valve opening. In order to decrease HC emissions during deceleration, ECU de-energizes solenoid valve which supplies manifold vacuum to throttle opener at or above the preset engine speed.