Sensor Operating 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 ⁽¹⁾

Temperature °F (°C)

Ohms

32 (0)

5000-8000

50 (10)

3000-5000

68 (20)

2000-3000

86 (30)

1500-2000

104 (40)

1000-1500

122 (50)

700-1000

140 (60)

600-800

158 (70)

300-600

176 (80)

260-400

⁽¹⁾	Resistance values are approximate. Check sensor in heated water.

EGR TEMPERATURE SENSOR RESISTANCE ⁽¹⁾

Temperature °F (°C)

Ohms

212 (100)

60,000-100,000

302 (150)

15,000-25,000

392 (200)

3000-8000

482 (250)

1500-2500

572 (300)

400-1000

662 (350)

250-350

⁽¹⁾	Resistance values are approximate. Check sensor in boiling water.

HEATED OXYGEN SENSOR VOLTAGE

Condition	Volts
Lean	.1
Rich	.9

INTAKE AIR TEMPERATURE SENSOR RESISTANCE ⁽¹⁾

Temperature °F (°C)

Ohms

32 (0)

5000-8000

50 (10)

3000-5000

68 (20)

2000-3000

86 (30)

1500-2000

104 (40)

1000-1500

122 (50)

700-1000

140 (60)

600-800

158 (70)

300-600

176 (80)

260-400

⁽¹⁾	Resistance values are approximate.

MASS AIRFLOW SENSOR VOLTAGE ⁽¹⁾

Condition

Volts

Idle

.10-1.40

Full Throttle

3.0-3.3

⁽¹⁾	Measure voltage between terminals No. 1 and 3.