Section 30 (Engine Controls - Sensor Operating Range Charts): Introduction: Notes
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Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a Diagnostic Trouble Code (DTC), 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.