Engine Controls - Sensor Operating Range Charts 1.3L: 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 may cause driveability problems.

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

ENGINE COOLANT TEMPERATURE (ECT) SENSOR VOLTAGE⁽¹⁾

Temperature °F (°C)

⁽²⁾ Voltage

-4 (-20)

4.7

32 (0)

3.4

68 (20)

2.5

104 (40)

2.0

176 (80)

0.7

212 (100)

0.2

⁽¹⁾	Measure voltage between breakout box test pins No. 41 and 49.

⁽²⁾	Voltage may vary plus or minus 15 percent.

EGR BOOST (EGRB) SENSOR⁽¹⁾

Vacuum (In. Hg)

⁽²⁾ Volts

4.4

0.3

11.8

1.5

28.1

4.3

31.0

4.8

⁽¹⁾	Measure voltage between breakout box test pins No. 48 and 49.

⁽²⁾	Voltage may vary plus or minus 10 percent.

INTAKE AIR TEMPERATURE (IAT) SENSOR VOLTAGE⁽¹⁾

Temperature °F (°C)

⁽²⁾ Voltage

-4 (-20)

4.7

32 (0)

3.4

68 (20)

2.5

104 (40)

2.0

140 (60)

1.2

176 (80)

0.7

⁽¹⁾	Measure voltage between breakout box test pins No. 45 and 49.

⁽²⁾	Voltage may vary plus or minus 15 percent.

OXYGEN SENSOR (O2S) VOLTAGE⁽¹⁾

Engine Condition

Voltage

KOEO

Less Than 1.0

Idle

Less Than 1.0

Deceleration

0-0.4

Acceleration

0.5-1.0

⁽¹⁾	Measure voltage between breakout box test pins No. 78 and 49.

HEATED OXYGEN SENSOR (HO2S) VOLTAGE⁽¹⁾

Engine Condition

Voltage

KOEO

Less Than 1.0

Idle

Less Than 1.0

Deceleration

0-1.0

Acceleration

0-1.0

⁽¹⁾	Measure voltage between breakout box test pins No. 26 and 49.

MASS AIRFLOW (MAF) SENSOR⁽¹⁾

Engine Condition

Volts

KOEO

1-1.5

Hot Idle

2.0

30 MPH

2.6

55 MPH

2.8

⁽¹⁾	Measure voltage between breakout box test pins No. 38 and 25.

THROTTLE POSITION (TP) SENSOR OUTPUT VOLTAGE⁽¹⁾

Throttle Position

⁽²⁾ Voltage

0.5

1/4

1.3

1/2

2.2

3/4

2.9

Full

3.7

⁽¹⁾	Measure voltage between breakout box pins No. 40 and 49.

⁽²⁾	Voltage may vary plus or minus 15 percent.