Sensor Operating Range Charts

ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE

Temp. °F (°C)	Ohms
32 (0)	5740
68 (20)	2280-2630
104 (40)	1150
140 (60)	584
176 (80)	305-331

INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE

Temp. °F (°C)	Ohms
32 (0)	5880
68 (20)	2210-2690
104 (40)	1140
140 (60)	580
176 (80)	290-350

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

MAP SENSOR OUTPUT VOLTAGE (OFF-VEHICLE)

Altitude (Feet)

Vacuum (In. Hg)

⁽¹⁾ Output Voltage

0-2000

28-30

3.1-3.6

2001-5000

25-28

2.8-3.4

5001-8000

22-25

2.6-3.1

8001-10,000

20-22

2.4-2.9

⁽¹⁾	Voltage should reduce when up to 15 in. Hg of vacuum is applied to MAP sensor.

MAP SENSOR OUTPUT VOLTAGE (ON-VEHICLE)

Altitude (Feet)

Vacuum (In. Hg)

⁽¹⁾⁽²⁾ Output Voltage

3.5-3.8

1000

3.4-3.7

2000

3.3-3.6

3000

3.2-3.5

4000

3.1-3.4

5000

3.0-3.3

6000

2.9-3.2

7000

2.8-3.1

8000

2.7-3.0

9000

2.6-2.9

10,000

2.5-2.8

⁽¹⁾	MAP sensor output voltage is tested with coupler connected to ECM. ECM is located near glove box on Before testing MAP sensor output voltage, ensure ECM supply voltage is 4.75-5.25 volts at connector terminal C6 (Pink wire) and terminal C12 (Green/Red wire).

⁽²⁾	Output voltage is checked at ECM connector terminal C3 (Green wire) and terminal C12 (Green/Red wire) Start engine, if possible, and see if output voltage varies.

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

POWER STEERING PRESSURE SIGNAL VSV (IF EQUIPPED)

Application

Ohms

Esteem

⁽¹⁾ .33-.39

⁽¹⁾	Measure between power steering VSV terminals.

THROTTLE POSITION (TP) SENSOR RESISTANCE

Application		Ohms
Between Terminals "A" & "B"
With .012" (.30 mm) Clearance At Stop Screw		0-3000
With .024" (.60 mm) Clearance At Stop Screw		Infinity
Between Terminals "A" & "D"		2870-5330
Between Terminals "A" & "C"
At Idle		130-10,930
At Wide Open Throttle		2020-14,640

VEHICLE SPEED SENSOR (VSS) RESISTANCE

Application

Ohms

Esteem

⁽¹⁾ *

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