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Sensor Range Charts

COOLANT TEMP SENSOR RESISTANCE

Temperature °F (°C)

⁽¹⁾ Ohms

0 (-18)

25,000

20 (-7)

13,500

40 (4)

7500

70 (21)

3400

100 (38)

1800

160 (71)

450

212 (100)

185

⁽¹⁾	Measure resistance across disconnected sensor terminals.

EGR TEMP SENSOR RESISTANCE (CALIF.)

Temperature °F (°C)

⁽¹⁾ Ohms

32 (0)

27,000

104 (40)

5800

212 (100)

1000

⁽¹⁾	Measure resistance across disconnected sensor terminals.

MAP SENSOR VOLTAGE

Altitude Feet

⁽¹⁾ Volts

Below 1000

3.8-5.5

1000-2000

3.6-5.3

2000-3000

3.5-5.1

3000-4000

3.3-5.0

4000-5000

3.2-4.8

5000-6000

3.0-4.6

6000-7000

2.9-4.5

7000-8000

2.8-4.3

8000-9000

2.6-4.2

⁽¹⁾	Measure voltage at Grey/Red wire terminal.

MAT SENSOR RESISTANCE

Temperature °F (°C)

⁽¹⁾ Ohms

0 (-18)

25,000

20 (-7)

13,500

40 (4)

7500

70 (21)

3400

100 (38)

1800

160 (71)

450

212 (100)

185

⁽¹⁾	Measure resistance across disconnected sensor terminals.

OXYGEN SENSOR VOLTAGE TEST ⁽¹⁾

Condition

Volts

Lean

0.1

Rich

0.9

⁽¹⁾	Test at normal operating temperature

O2 SENSOR HEATING ELEMENT RESISTANCE TEST⁽¹⁾

Application

⁽²⁾ Ohms

Impulse & Stylus

3.5-14

⁽¹⁾	Resistance will vary with temperature change.

⁽²⁾	Measure resistance between Black wire and Light Blue wire terminals.

THROTTLE POSITION SENSOR VOLTAGE⁽¹⁾

Position

⁽²⁾ Volts

Closed Throttle

0.48

Open Throttle

4.5

⁽¹⁾	For terminal locations, see appropriate WIRING DIAGRAMS article in the ENGINE PERFORMANCE Section.

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

VEHICLE SPEED SENSOR CONTINUITY TEST⁽¹⁾

Application

⁽²⁾ Continuity

All Models

4 Changes Per Revolution

⁽¹⁾	Measure continuity at back of speedometer. See WIRING DIAGRAMS article in the ENGINE PERFORMANCE Section.

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

VEHICLE SPEED SENSOR VOLTAGE TEST⁽¹⁾

Application

⁽²⁾ Volts

All Models

Less than 10

⁽¹⁾	Measure voltage at back of speedometer. See WIRING DIAGRAMS article in the ENGINE PERFORMANCE Section.

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