Sensor Operating Range Charts

COOLANT TEMPERATURE SENSOR (CTS) RESISTANCE TEST

Temperature °F (°C)

Ohms

212 (100)

185

158 (70)

450

100 (38)

1,800

68 (20)

3,400

39 (4)

7,500

19 (-7)

13,500

0 (-18)

25,000

-40 (-40)

100,700

⁽¹⁾	Measure resistance between terminals of sensor.

FUEL INJECTOR SOLENOID RESISTANCE TEST

Test Point	Ohms
Between Injector Terminals	1.2

IDLE AIR CONTROL VALVE (IACV) RESISTANCE TEST

Circuit/Connector Terminal

Ohms

No. 443 ("A") to No. 444 ("B")

No. 441 ("C") to No. 442 ("D")

⁽¹⁾	See BASIC TESTING article (Figure 8) for wire colors and terminal locations.

MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR VOLTAGE TEST

Altitude Feet (Meters)

Voltage

1,000-2,000 (305-610)

3.6-5.2

2,000-3,000 (610-914)

3.5-5.1

3,000-4,000 (914-1219)

3.3-5.0

4,000-5,000 (1219-1524)

3.2-4.8

5,000-6,000 (1524-1829)

3.0-4.6

6,000-7,000 (1829-2133)

2.9-4.5

7,000-8,000 (2133-2438)

2.8-4.3

8,000-9,000 (2438-2743)

2.6-4.2

9,000-10,000 (2743-3048)

2.5-4.0

⁽¹⁾	Measure voltage at circuit No. 432 (White/Green wire) and circuit No. 450 (Black/White wire) with ignition on and engine off.

MANIFOLD AIR TEMPERATURE (MAT) SENSOR (2.0L) RESISTANCE TEST

Temperature °F (°C)

Ohms

212 (100)

185

158 (70)

450

100 (38)

1,800

68 (20)

3,400

39 (4)

7,500

19 (-7)

13,500

0 (-18)

25,000

-40 (-40)

100,700

⁽¹⁾	Measure resistance between terminals of sensor.

OXYGEN SENSOR VOLTAGE TEST

Condition

Volt

Lean

Rich

⁽¹⁾	Measure voltage between ground and O2 sensor terminal with engine running.

THROTTLE POSITION SENSOR (TPS) VOLTAGE TEST

Application

Volts

Closed Throttle

.4-1.25

Full Throttle

4.8

⁽¹⁾	Measure voltage at circuit No. 417 (Blue wire) with circuit No. 452 (Black wire) grounded and a 5-volt reference supplied to circuit No. 416 (Gray wire).