9000 Aero L4-2290cc 2.3L DOHC Turbo EFI HO (1997)
Temperature Gauge: Description and Operation
Coolant Temperature Gauge 47c
The temperature gauge displays the temperature of the engine coolant.
When the ignition switch is in the Drive position, 12 V is applied to pin 2 of the temperature gauge from pin 22 of EDU 210. Coolant temperature sensor
45 is connected to the EDU unit which performs a calculation and sends a 1-9 V signal to pin 7 of the tank/ temperature unit.
1 V = min. temp
9 V = max. temp
Temperature gauge 47c, fuel gauge 47a, instrument lighting lamps 18, and indicator lamp 47i are connected to ground via pin 5.
Instrument Lighting 18
Backlighting of the instruments is regulated by rheostat 16 (lighting for instruments and controls) via pin 6.
Indicator Lamp 47i
The indicator lamp for the right-hand direction indicators is controlled by flasher relay 23 via pin 4. The lamp can also be activated directly from the
anti-theft alarm control module.
