9000 CS L4-2290cc 2.3L DOHC Turbo EFI (1996)
If the car is equipped with a parking heater, the Automatic Climate Control (ACC) unit is activated by the parking heater with a 12 V timer signal. The
Automatic Climate Control (ACC) unit then sends a 12 volt "wake up signal" to pin 3 on the Electronic Display Unit (EDU) control module. The
control module then starts to measure and indicate outside temperature and sends pulses showing current outside temperature from pin 23 to the ACC
unit.
Other functions in the control module are shut off.
Outside Temperature to ACC