audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Voltage Measurements|Page 76 > < Voltage Measurements
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AIR FLOW POTENTIOMETER

Pin 14 to 17

At rest ...........................................................................................................................................................................................................  0.1 - 0.3V
Open (Idle) ...................................................................................................................................................................................................  0.8 - 1.2V

ALTITUDE SENSOR

Pin 26 to 35 ........................................................................................................................................................................................................  4.5 - 5.5V
Pin 25 to 35 (Under 6500') .................................................................................................................................................................................  1.5 - 4.0V

- The Altitude Sensor is not installed on 80 Model 2.0L 1989-90.
- As altitude increases voltage decreases.

TRANSMISSION SWITCH

Engine idling

Pin 34 to 35 (A/T only) ....................................................................................................................................................................................  9 - 11V

COLD START VALVE

Cranking (cool engine)

Pin 16 to 35 (4 sec) ............................................................................................................................................................................................  0 - 1V
-

15k resistor in place of coolant sensor will allow testing of the cold start injector.

Cranking (warm engine)

Pin 16 to 35 ......................................................................................................................................................................................................  8 - 11V

AIR CONDITIONER CONTROL

Engine Idling

Pin 33 to 35 (A/C on) .....................................................................................................................................................................................  11 - 13V

Voltage Measurements|Page 76 > < Voltage Measurements