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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)

Temperature Ohms
J30 (2)
(1) Measure resistance with ignition off.
(2) Information not available from manufacturer. See test procedure for DTC P0340 in TESTS W/O CODES article.
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
(1) Measure resistance across sensor terminals.
EGR TEMPERATURE SENSOR RESISTANCE (1)

Temperature Ohms
32 (0) (2) 7.9-9.7
122 (50) (2) .57-70
212 (100) (2) .08-1.0
(1) Heat sensor in water and measure resistance across sensorterminals.
(2) Megohms are given.
HEATED OXYGEN SENSOR (HO2S) VOLTAGE (1)

Condition Volts
Lean 0-0.3
Rich 0.6-1.0
(1) Measure voltage between HO2S center terminal and ground, voltage should continuously change.
HEATED OXYGEN SENSOR (HO2S) RESISTANCE @ 77°F (25°C)

Condition (1) Ohms
Front & Rear 2.3-4.3
(1) Measure resistance between HO2S outer terminals. 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) Ohms
Completely Released 500
Partially Released 500-4000
Completely Depressed 4000
(1) Approximate values are given. See ADJUSTMENTS article for TP sensor connector terminal identification.
MASS AIRFLOW (MAF) SENSOR VOLTAGE SPECIFICATIONS (1)

Application Power Supply Volts Output Supply Volts
J30 11.0-14.0 1.0-1.7
(1) For test procedures, see DTC P0100 - MASS AIRFLOW (MAF) SENSOR in appropriate TESTS W/CODES article.
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