Engine Controls - Sensor Operating Range Charts - 2.5L: Introduction

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

CAMSHAFT POSITION (CMP) SENSOR VOLTAGE

ECM/PCM Terminal ⁽¹⁾

⁽²⁾ Voltage

SGC Signal

5 (1 pulses/rev)

⁽¹⁾	See PIN VOLTAGE CHART S article for terminal identification.

⁽²⁾	Rotate distributor drive by hand while measuring output voltage.

CRANKSHAFT POSITION (CKP) SENSOR RESISTANCE

Terminals ⁽¹⁾

Temperature

Ohms

"A" & "B"

68°F (20°C)

520-850

⁽¹⁾	See appropriate SYSTEM/COMPONENT TESTS article for terminal identification.

ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE

Temperature	Ohms
68°F (20°C)	2200-2700
176°F (80°C)	290-350

EGR BOOST SENSOR VOLTAGE

Vacuum	Voltage
0 in. Hg	4.0

EGR VALVE POSITION SENSOR RESISTANCE

Terminals ⁽¹⁾

Ohms With No Vacuum Applied

Ohms @ 5.9 In. Hg

"A" & "B"

2700

"A" & "C"

500

2700

"B" & "C"

2400

100

⁽¹⁾	See appropriate SYSTEM/COMPONENT TESTS article for terminal identification.

EGR VALVE POSITION SENSOR VOLTAGE

Terminals ⁽¹⁾

Ohms With No Vacuum Applied

Ohms @ 5.9 In. Hg

"A"

"B"

4.5-5.5

"C"

0.8

4.8

⁽¹⁾	See appropriate SYSTEM/COMPONENT TESTS article for terminal identification.

HEATED OXYGEN SENSOR

Operating Condition	Volts
Acceleration	0.5-1.0
Deceleration	0.0-0.5

INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE

Temperature	Ohms
68°F (20°C)	2200-2700
176°F (80°C)	290-340

KNOCK SENSOR RESISTANCE

Temperature

⁽¹⁾ Ohms

68°F (20°C)

5600

⁽¹⁾	Measure resistance between knock sensor terminal "A" and knock sensor body.

MASS AIRFLOW (MAF) SENSOR VOLTAGE

Terminal ⁽¹⁾

Ignition On Volts

Engine Running Volts

"C" (Power Supply)

12.0

"B" (Signal)

1.0-1.5

1.5-5.0

"A" (Ground)

0-1

⁽¹⁾	See appropriate SYSTEM/COMPONENT TESTS article for terminal identification.

TP SENSOR VOLTAGE

ECM/PCM Wire Color

Closed Throttle Volts

WOT Volts

Millenia

2.5L

Yellow/Red (3B) ⁽¹⁾

0.1-1.0

2.8-4.5

⁽¹⁾	ECM/PCM terminal pin No. in parentheses.

THROTTLE POSITION (TP) SENSOR CONTINUITY

Test Condition ⁽¹⁾

Continuity Between Terminals "C" & "D"

Millenia 2.5L

.006" (.15 mm)

Yes

.020" (.5 mm)

⁽¹⁾	Insert feeler gauge of specified thickness between throttle lever and throttle stop screw. See appropriate SYSTEM/COMPONENT TESTS article for terminal identification.