Sensor Range Charts

NOTE: Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.

COOLANT TEMPERATURE SENSOR RESISTANCE TEST

Temperature	Ohms
68°F (20°C)	2200-2600
104°F (40°C)	1000-1400
176°F (80°C)	285-315
212°F (100°C)	180-220

AIR TEMPERATURE SENSOR RESISTANCE TEST

Temperature	Ohms
68°F (20°C)	400-700

ENGINE SPEED SENSOR CIRCUITS (2.2L)

Sensor Terminal		ECU Terminal
Engine RPM (Gray)
1		29
2		11
3		28
Ignition Timing Reference (Black)
1		13
2		12
3		28

MASS AIRFLOW SENSOR VALUES

Terminals ⁽¹⁾

Volts

2 & 4

⁽²⁾ 1.07.5

1 & 2

0.3 1.1

⁽¹⁾	See Fig 1 .

⁽²⁾	With ignition on.

Fig 1: Identifying Mass Airflow Sensor Connector Terminals

Courtesy of AUDI OF AMERICA, INC.

OXYGEN SENSOR VALUES

Application

⁽¹⁾ Specification

2.2L

⁽²⁾ 0.53.0 Amps

2.3L

3-15 Ohms

⁽¹⁾	Measured between connector terminals.

⁽²⁾	With Test Adapter (VW 1315 A/T) attached.