Audi Workshop Service and Repair Manuals

Air Flow Meter/Sensor: Specifications

AIR FLOW SENSOR POTENTIOMETER

Resistance between sensor terminals 1 & 2 ..............................................................................................................................................  5K ohms [1]
Resistance between sensor terminals 1 & 3 ..............................................................................................................................................  4K ohms [1]

 
[1] Sensor plate in rest position.

CARBON CANISTER SHUT-OFF VALVE

Resistance ....................................................................................................................................................................................  Approx. 30-60 ohms

 
COLD START VALVE

Resistance .........................................................................................................................................................................................  Approx. 10 ohms

 
COOLANT TEMPERATURE SENSOR

Resistance @ 20~C (68~F) ............................................................................................................................................................  Approx.2.5K ohms
Resistance @ 80~C (176~F) ...................................................................................................................................................  Approx. 200-300 ohms

 
DIFFERENTIAL PRESSURE REGULATOR

Resistance ................................................................................................................................................................................................  17 - 22 ohms
Nominal current @ idle ...........................................................................................................................................................  0-5mA positive current

 
IDLE STABILIZER VALVE

Resistance ......................................................................................................................................................................................................  3-8 ohms

 
OXYGEN SENSOR

Voltage output @ operating temperature >300~C (575~F)
Range .............................................................................................................................................................................................................  0.1-1.0V
Nominal .........................................................................................................................................................................................................  0.3-0.6V
Heater voltage ....................................................................................................................................................................................... Battery voltage
Heater current ................................................................................................................................................................................................ 0.5 - 3.0A