Engine Controls - Sensor Operating Range Charts - 2.6L: Introduction

Sensor operating range information (if available) 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 using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.

COOLANT TEMPERATURE SENSOR RESISTANCE

Temperature °F (°C)

⁽¹⁾ Ohms

14 (-10)

7000-12,000

50 (10)

3000-5000

68 (20)

2000-3000

122 (50)

700-1000

176 (80)

200-400

⁽¹⁾	Measure resistance across disconnected sensor terminals.

MAP SENSOR VOLTAGE

Condition

⁽¹⁾ Volts

Vacuum Hose Disconnected

Greater than 2.5

Vacuum Hose Connected

Less than 2.5

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

OXYGEN SENSOR VOLTAGE ⁽¹⁾

Condition

Volts

Lean

0.1

Rich

1.0

⁽¹⁾	Test at normal operating temperature.

THROTTLE POSITION SENSOR VOLTAGE ⁽¹⁾

Position

⁽²⁾ Volts

Closed Throttle

0.5

Open Throttle

5.0

⁽¹⁾	For terminal locations, see WIRING DIAGRAMS article.

⁽²⁾	Voltage should increase smoothly from closed to wide open throttle.

VEHICLE SPEED SENSOR CONTINUITY ⁽¹⁾

Application

⁽²⁾ Continuity

2.6L

4 Changes Per Revolution

⁽¹⁾	Measure continuity at back of speedometer. See WIRING DIAGRAMS article.

⁽²⁾	Turn speedometer cable to cycle reed switch on and off.

VEHICLE SPEED SENSOR VOLTAGE ⁽¹⁾

Application

⁽²⁾ Volts

2.6L

Less than 10

⁽¹⁾	Measure voltage at back of speedometer. See WIRING DIAGRAMS section.

⁽²⁾	With ignition on, turn speedometer cable to cycle reed switch on and off.