Engine Controls - Sensor Operating Range Charts: Introduction

Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a trouble code, but it will cause driveability problems.

ENGINE COOLANT TEMPERATURE SENSOR & INTAKE AIR TEMPERATURE SENSOR

Temperature - °F (°C)	Output Voltage	Ohms
14 (-10)	4.4	9200
68 (20)	3.5	2500
122 (50)	2.2	800
194 (90)	0.9	200

MASS AIRFLOW SENSOR

Engine RPM

⁽¹⁾ Volts

800

1.2-1.4

1500

1.5-1.7

2000

1.7-1.9

2500

1.9-2.1

3000

2.1-2.3

⁽¹⁾	Measure voltage between White/Blue and Blue/Orange terminals.

THROTTLE POSITION SENSOR

Throttle Position

⁽¹⁾ Volts

Closed

1/4

1.3

Half Open

2.2

3/4

3.1

Fully Open

4.1

⁽¹⁾	Values may vary by 15 percent. For additional testing, see TEST DH: THROTTLE POSITION SENSOR under SYSTEM TESTS in SELF DIAGNOSTICS - VILLAGER article.