Sensor Range Charts

COOLANT TEMP SENSOR RESISTANCE (AMIGO & PICKUP 2.3L)

Condition

⁽¹⁾ Ohms

Cold Engine

Warm Engine

800

⁽¹⁾	Measure resistance across disconnected sensor terminals.

COOLANT TEMP SENSOR RESISTANCE (AMIGO, PICKUP & RODEO 2.6L)

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.

COOLANT TEMP SENSOR RESISTANCE (IMPULSE, STYLUS & TROOPER)

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.

COOLANT TEMPERATURE SENSOR RESISTANCE (PICKUP & RODEO 3.1L)

Temperature °F (°C)

⁽¹⁾ Ohms

5 (-15)

21,450

23 (-5)

12,300

41 (5)

7280

68 (20)

3520

104 (40)

1459

158 (70)

467

212 (100)

185

⁽¹⁾	Measure resistance across disconnected sensor terminals.

EGR TEMPERATURE SENSOR RESISTANCE (RODEO 2.6L, CALIF.)

Temperature °F (°C)

⁽¹⁾ Ohms

32 (0)

28,000

68 (20)

12,100

109 (43)

5900

176 (80)

1700

212 (100)

1000

⁽¹⁾	Measure resistance across disconnected sensor terminals.

EGR TEMP SENSOR RESISTANCE (IMPULSE & STYLUS, CALIF.)

Temperature °F (°C)

⁽¹⁾ Ohms

27,000

104 (40)

5800

212 (100)

1000

⁽¹⁾	Measure resistance across disconnected sensor terminals.

MAP SENSOR VOLTAGE (IMPULSE & STYLUS)

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 Gray/Red wire terminal.

MAP SENSOR VOLTAGE (AMIGO, PICKUP & RODEO 2.6L)

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.

MAP SENSOR VOLTAGE (PICKUP, RODEO 3.1L & TROOPER)

Throttle Position

⁽¹⁾ Volts

Closed

1-1.5

Wide open

4.5-4.8

⁽¹⁾	On Pickup and Rodeo, measure voltage at Pink wire and Light Green wire terminals with ignition on. On Trooper, measure voltage at Gray wire and Gray/Red wire terminals with ignition on.

MAT SENSOR RESISTANCE (IMPULSE, STYLUS & TROOPER)

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

Rich

⁽¹⁾	Test at normal operating temperature.

OXYGEN SENSOR HEATING ELEMENT RESISTANCE TEST ⁽¹⁾

Application

⁽²⁾ Ohms

Impulse, Stylus & Trooper

3.5-14

⁽¹⁾	Resistance will vary with temperature change.

⁽²⁾	On Impulse and Stylus, measure resistance between Black wire and Light Blue wire terminals. On Trooper, measure resistance between Black wire and White/Red wire terminals.

TRANSMISSION TEMPERATURE SENSOR RESISTANCE (IMPULSE)

Temperature °F (°C)

⁽¹⁾ Ohms

68 (20)

2500

176 (80)

300

⁽¹⁾	Measure resistance across terminals No. 6 and 7 with connector connected to sensor. See WIRING DIAGRAMS article in the ENGINE PERFORMANCE Section.

TRANSMISSION TEMPERATURE SENSOR RESISTANCE (TROOPER)

Temperature °F (°C)

⁽¹⁾ Ohms

32 (0)

65,000

68 (20)

2500

176 (80)

300

248 (120)

780

302 (150)

370

⁽¹⁾	Measure resistance across terminals No. 17 and 22 of transmission control module connector. See WIRING DIAGRAMS article in the ENGINE PERFORMANCE Section.

THROTTLE POSITION SENSOR VOLTAGE ⁽¹⁾

Position

⁽²⁾ Volts

Closed Throttle

.48

Open Throttle

4.5

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

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

NOTE: For testing vehicle speed sensor on Trooper, see ENGINE SENSORS & SWITCHES in I - SYS/COMP TESTS article in the ENGINE PERFORMANCE Section.

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.