90 Quattro 20V L5-2309cc 2.3L DOHC (7A) (1990)
Air Flow Meter/Sensor: Specifications
Models Produced From March 1990
CARBON CANISTER FREQUENCY VALVE
Resistance .................................................................................................................................................................................... Approx. 40-50 ohms
CARBON CANISTER SHUT-OFF VALVE
Resistance .................................................................................................................................................................................... Approx. 40-50 ohms
CRANKSHAFT POSITION SENSOR
Resistance between terminals 1 & 2 ............................................................................................................................................................... 1k ohms
COOLANT TEMPERATURE SENSOR
Resistance @ 20~C (68~F) ........................................................................................................................................................... Approx. 2.5K ohms
Resistance @ 80~C (176~F) ................................................................................................................................................... Approx. 200-300 ohms
ENGINE SPEED SENSOR
Resistance between terminals 1 & 2 ............................................................................................................................................................... 1k ohms
FUEL INJECTORS
Resistance ................................................................................................................................................................................................ 1.0-3.0 ohms
IDLE STABILIZER VALVE
Resistance ................................................................................................................................................................................................ 7.5-8.5 ohms
OXYGEN SENSOR
Voltage output @ operating temperature >300~C (575~F)
Range ............................................................................................................................................................................................................. 0.1-1.0V
Nominal ......................................................................................................................................................................................................... 0.3-0.6V
SERIES RESISTORS
Resistance ............................................................................................................................................................................................... 5.0-8.0 ohms
NOTE: Check series resistance between terminal #1 of grey connector and each of the remaining terminals of both connectors, while disconnected
from wiring harness.
THROTTLE VALVE POTENTIOMETER
Resistance W/throttle closed.
Between potentiometer terminals #1 & #2 ......................................................................................................................................... 1.5K-2.6K ohms
Between potentiometer terminals #2 & #3 .......................................................................................................................................... 750-1.3K ohms
Resistance W/throttle fully open.
Between potentiometer terminals #2 & #3 ............................................................................................................................ not more than 3.6K ohms