SHAFT AS-PUMP DRIVE 7N5239 - Caterpillar

Conditions Which Generate This Code:This diagnostic code is for the pressure sensor (engine oil).The EMCP II monitors the engine oil pressure in order to protect the engine from a problem with the oil pressure. The oil pressure sensor is mounted on an oil gallery of the engine. The exact location of the engine oil pressure sensor varies depending on the engine model.The sensor is powered by an 8 volt sensor supply from the GSC. The oil pressure signal is a pulse width modulated signal. The base frequency of the signal is 500 150 Hz. As pressure changes, the duty cycle of the signal varies from 10 to 95 percent.
0 kPa (0 psi) is approximately a duty cycle of 13%. The voltage will be approximately 1.0 DCV.
690 kPa (100 psi) is approximately a duty cycle of 85%.System Response:Note: The GSC is usually programmed to treat a problem with the oil pressure sensor as an alarm fault. The factory default for P04 is 0. If the GSC is programmed to shutdown for a problem with the oil pressure sensor, then it is not necessary to press the alarm code key in order to view the CID FMI. P04 is equal to 1 for a shutdown fault. The CID and the FMI are automatically displayed on the upper display panel of the EMCP II. The possible causes of a CID 0100 FMI 02 diagnostic code are listed below:
The base signal of the sensor is beyond accepted limits.
The duty cycle of the sensor signal is beyond accepted limits.Begin performing these procedures only when CID 0100