KIT-SEAL 2460659 - Caterpillar

System Operation Description:Use this procedure under the following situation:Use this procedure if any of the following diagnostic codes are active:
30-08 PTO Throttle signal invalid
30-13 PTO Throttle out of calibrationAlso, use this procedure if the remote accelerator position sensor is suspected of improper operation.Remote Accelerator Position SensorA remote accelerator position sensor may be used for PTO purposes. The remote accelerator position sensor must be connected to the Engine Control Module (ECM) at P1-68. Before the ECM will respond to the remote accelerator position sensor, the ECM PTO configuration must be programmed to "Remote Throttle", and the PTO on/off switch must be in the ON position. Also, Caterpillar offers the following recommendation:
Wire the power for the remote accelerator position sensor from the vehicle battery (+12 V).Therefore, the +12 V version of the accelerator position sensor must be used for the remote accelerator position sensor, and the +8 V version for the accelerator pedal position sensor in the cab.The ECM will not respond to the remote accelerator position sensor if 253-02 Check Customer or System Parameters is active under some conditions. Refer to Troubleshooting, "ECM Memory - Test" if 253-02 Check Customer or System Parameters is active.The remote accelerator position sensor is used to provide a throttle position signal to the ECM. Sensor output is a constant frequency signal with a pulse width that varies with the pedal position. This output signal is referred to as either a duty cycle or a pulse width modulated signal (PWM) and this output signal is expressed as a percentage between 3 and 100 percent.The accelerator position sensor in the cab is attached directly to the accelerator pedal assembly and the sensor requires no adjustment.The accelerator position sensor will produce a duty cycle of 10 to 22 percent at low idle and 75 to 90 percent when the accelerator pedal is fully depressed. The percent of duty cycle is translated in the ECM into an accelerator pedal position of 3 to 100 percent.The accelerator position sensor can be replaced separately from the pedal assembly. An incorrectly calibrated pedal assembly can not be adjusted. The entire pedal assembly must be replaced.If the vehicle is using the ECM dedicated PTO functions, the accelerator position sensor will be ignored while the engine is in PTO mode and the PTO Configuration is programmed to the following setting:
"Remote Throttle"The ECM is in PTO mode if the PTO on/off switch is in the ON position. This can be checked through the status screen on Caterpillar Electronic Technician (ET).The ECM will not respond to the remote accelerator position sensor when both of the following conditions are met:
The PTO on/off circuit is switched from the