Sensor Operating Range Charts

CAMSHAFT POSITION (CMP) SENSOR VOLTAGE

Application

M Connector/Terminal No.

Volts

3-Speed A/T Or M/T

B/3 & Ground

⁽¹⁾ 0-5

4-Speed A/T

D/3 & Ground

⁽¹⁾ 0-5

⁽¹⁾	Voltage toggles from 0-1 volt to 3-5 volts as distributor rotor is turned slowly.

CRANKSHAFT POSITION (CKP) SENSOR RESISTANCE

Application	Ohms @ 68°F (20°C)
Tracker	360-460

ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE

Temperature °F (°C)	Ohms
0 (-18)	14,650
20 (-7)	8100
40 (4)	4780
70 (21)	2350
100 (38)	1250
160 (71)	400
210 (99)	190

INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE

Temperature °F (°C)	Ohms
0 (-18)	14,800
20 (-7)	8250
40 (4)	5200
70 (21)	2500
100 (38)	1300
160 (71)	450
210 (99)	200

CAUTION: Damage to MAP sensor will occur if connections are made incorrectly.

NOTE: MAP sensor specifications are not available from manufacturer at time of publication.

CAUTION: Blowing compressed air through mass airflow sensor will damage it.

MASS AIRFLOW (MAF) SENSOR VOLTAGE TEST ⁽¹⁾

Application

PCM Connector/Terminal No.

Volts

With 3-Speed A/T Or M/T

Ign. On, Eng. Off

A/9 & Ground

1.0-1.6

Engine At Idle

A/9 & Ground

1.7-2.0

With 4-Speed A/T

Ign. On, Eng. Off

D/9 & Ground

1.0-1.6

Engine At Idle

D/9 & Ground

1.7-2.0

⁽¹⁾	Voltage should increase as engine speed increases.

THROTTLE POSITION (TP) SENSOR RESISTANCE

Application

Ohms

Between Terminals No. 1 & 2

With .020" (.51 mm) Clearance At Stop Screw

0-500

With .031" (.79 mm) Clearance At Stop Screw

Infinity

Between Terminals No. 1 & 3

At Idle

⁽¹⁾ 300-2000

At Wide Open Throttle

⁽¹⁾ 2000-6500

Between Terminals No. 1 & 4

3500-6500

⁽¹⁾	There should be more than 2000 ohms difference between idle and wide open throttle resistance.

VEHICLE SPEED SENSOR (VSS) RESISTANCE

Application

Ohms

Tracker

⁽¹⁾

⁽¹⁾	With ohmmeter connected to vehicle speed sensor terminals, ohmmeter should alternate between zero and infinity 4 times per sensor shaft revolution.