Engine Controls - Sensor Operating Range Charts - 2.3L Turbo: 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 may cause driveability problems.

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

INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE ⁽¹⁾

Temperature - °F (°C)

Ohms

-22 (-30)

20,000-30,000

14 (-10)

7000-11,400

68 (20)

2100-2900

104 (40)

1000-1300

140 (60)

565-670

176 (80)

295-365

194 (90)

240-260

⁽¹⁾	Measure voltage between sensor terminals.

MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR VOLTAGE ⁽¹⁾

Pressure - In. Hg

Volts

-22.5

0.5

-15.0

0.9

1.8

7.5

2.3

15.0

2.8

22.5

3.3

⁽¹⁾	Measure voltage between terminals No. 1 and No. 2.

HEATED OXYGEN SENSOR (HO2S) VOLTAGE

Condition	Volts
Lean	0-0.4
Rich	0.6-1.0

THROTTLE POSITION (TP) SENSOR RESISTANCE

Position

Ohms

Idle Position ⁽¹⁾

2300-3400

Wide Open Throttle ⁽¹⁾

700-1000

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

VEHICLE SPEED SENSOR (VSS) VOLTAGE ⁽¹⁾

Application

Volts

9000 Series

⁽¹⁾ About 0.6

⁽¹⁾	Rotate front wheels with engine. Voltage should increase with increasing wheel RPM.