Sensor Operating Specifications

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

Condition

⁽¹⁾ Ohms

Cold Engine

Warm Engine

800

⁽¹⁾	Measure resistance across disconnected sensor terminals.

EGR TEMPERATURE SENSOR RESISTANCE (CALIFORNIA)

Temperature °F (°C)

⁽¹⁾ Ohms

32 (0)

28,000

68 (20)

12,100

104 (40)

5800

212 (100)

1000

⁽¹⁾	Measure resistance across disconnected sensor terminals.

OXYGEN SENSOR VOLTAGE ⁽¹⁾

Condition

Volts

Lean

Rich

1.0

⁽¹⁾	Test at normal operating temperature.

THROTTLE POSITION SENSOR VOLTAGE ⁽¹⁾

Position

⁽²⁾ Ohms

Closed Throttle

Open Throttle

5.0

⁽¹⁾	For terminal locations, see WIRING DIAGRAMS - 2.3L article.

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

VEHICLE SPEED SENSOR CONTINUITY ⁽¹⁾

Application

⁽²⁾ Ohms

Pickup 2.3L

4 Changes Per Revolution

⁽¹⁾	Measure continuity at back of speedometer. See WIRING DIAGRAMS - 2.3L article.

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

VEHICLE SPEED SENSOR VOLTAGE ⁽¹⁾

Application

⁽²⁾ Volts

Pickup 2.3L

Less than 10

⁽¹⁾	Measure voltage at back of speedometer. See WIRING DIAGRAMS - 2.3L article.

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