CONTROL GP-HANDLE 5285699 - Caterpillar

Electronic Control Module (ECM) attempts to perform an automatic calibration of all pressure sensors whenever the ECM is powered and the engine has been off for at least ten seconds. Cranking the engine during the first ten seconds causes the ECM to abort the calibration attempt.During an automatic pressure sensor calibration, the ECM checks all pressure sensors against an acceptable range. If any pressure sensor reading is outside the acceptable range, the previous calibration value is used. The ECM then calibrates all pressure sensors against the atmospheric pressure sensor.A pressure sensor calibration will not be successful if there are active sensor diagnostic codes with an FMI of 03 and/or 04. A pressure sensor calibration will not be successful if one of the following conditions exist:
The pressure reading is outside of an acceptable range.
The pressure reading varies significantly during calibration.
Perform a Manual Calibration of the Sensors.
Select "Calibrations" from the "Service" menu on Cat ET. Select the "Pressure Sensor Calibration" from the "Calibrations" menu. The ECM will perform a pressure sensor calibration when this screen is entered.