Sensor Operating Range Charts

ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE

EGR TEMPERATURE (EGRT) SENSOR RESISTANCE ⁽¹⁾

Temp. °F (°C)

Ohms

68 (20)

214,000-313,800

104 (40)

90,900-125,700

140 (60)

42,100-55,500

176 (80)

21,100-26,500

212 (100)

11,200-13,600

⁽¹⁾	Used on California models.

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

MASS AIRFLOW (MAF) SENSOR VOLTAGE TEST ⁽¹⁾

Application

ECM Terminal

Volts

Ign. On, Eng. Off ⁽²⁾

C & D

0.2-0.8

⁽¹⁾	Voltage should increase as engine speed increases.

⁽²⁾	With ignition on, confirm battery voltage between terminals "B" and "C" of MAF coupler.

POWER STEERING PRESSURE SIGNAL VSV (IF EQUIPPED)

Application

Ohms

All Models

⁽¹⁾ .33-.39

⁽¹⁾	Measure between power steering VSV terminals.

THROTTLE POSITION (TP) SENSOR RESISTANCE

Application		Ohms
Between Terminals "C" & "D"
With .012" (.30 mm) Clearance At Stop Screw		0-500
With .035" (.89 mm) Clearance At Stop Screw		Infinity
Between Terminals "A" & "C"		3500-6500
Between Terminals "B" & "C"
At Idle		0-2000
At Wide Open Throttle		3500-6500

VEHICLE SPEED SENSOR (VSS) RESISTANCE

Application

Ohms

All Models

⁽¹⁾ *

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