Sensor Range Charts

Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a trouble code, but it may cause driveability problems.

NOTE: Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.

CAMSHAFT POSITION (CMP) SENSOR RESISTANCE ⁽¹⁾

Application - @ 68°F (20°C)

Ohms

Hitachi

1440-1760

Mitsubishi

2090-2550

⁽¹⁾	Measure resistance with ignition off.

CRANKSHAFT POSITION (CKP) SENSOR RESISTANCE ⁽¹⁾

Temperature

Ohms

68°F (20°F)

166-204

⁽¹⁾	Measure resistance with ignition off.

ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE ⁽¹⁾

Temperature

Ohms

68°F (20°C)

2100-2900

122°F (50°C)

680-1000

194°F (90°C)

236-260

230°F (110°C)

143-153

⁽¹⁾	Measure resistance across sensor terminals.

EGR TEMPERATURE SENSOR RESISTANCE ⁽¹⁾

Temperature

Ohms

32°F (0°C)

790,000-970,000

122°F (50°C)

570,000-700,000

212°F (100°C)

80,000-100,000

⁽¹⁾	Heat sensor in water and measure resistance across sensor terminals.

HEATED OXYGEN SENSOR (HO2S) RESISTANCE ⁽¹⁾

Condition

Ohms

Front ⁽²⁾

3.3-6.3

Rear ⁽²⁾

5.2-8.2

⁽¹⁾	Measure resistance between HO2S outer terminals.

⁽²⁾	Continuity should not exist between center terminal and outer terminals.

INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE ⁽¹⁾

Temperature

Ohms

68°F (20°C)

2100-2900

176°F (80°C)

270-380

⁽¹⁾	Measure resistance across sensor terminals.

THROTTLE POSITION (TP) SENSOR RESISTANCE

Application

⁽¹⁾⁽²⁾ Ohms

Completely Released

1000

Partially Released

1000-10,000

Completely Depressed

10,000

⁽¹⁾	Approximate values are given.

⁽²⁾	See ADJUSTMENTS article for TP sensor connector terminal identification.

MASS AIRFLOW (MAF) SENSOR VOLTAGE SPECIFICATIONS ⁽¹⁾

Application

Power Supply Volts

Output Supply Volts

G20

11.0-14.0

1.3-1.7

⁽¹⁾	For test procedures, see DTC P0100 - MASS AIRFLOW (MAF) SENSOR in appropriate TESTS W/CODES article.