Engine Controls - Sensor Operating Range Charts: Introduction: Notes

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

Temperature	Ohms
14-122°F (-10-50°C)	185-275
122-212°F (50-100°C)	240-325

CRANKSHAFT POSITION (CKP) SENSOR

Temperature	Ohms
122°F (50°C)	1630-2740
212°F (100°C)	2065-3225

ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE

Temperature °F (°C)	Ohms
-4 (-20)	10,000-20,000
32 (0)	4000-7000
68 (20)	2000-3000
104 (40)	900-1300
140 (60)	400-700
176 (80)	200-400

FUEL INJECTOR RESISTANCE

Application

Ohms

Prizm

⁽¹⁾

⁽¹⁾	Fuel injectors must be checked using a fuel injector tester. See fuel system diagnosis TEST A1-7C, TEST A1-7D and TEST A1-7E under CIRCUIT TESTS in the BASIC TESTING article.

INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE

Temperature °F (°C)	Ohms
-4 (-20)	10,000-20,000
32 (0)	4000-7000
68 (20)	2000-3000
104 (40)	900-1300
140 (60)	400-700
176 (80)	200-400