VALVE-EXHAUST 1039270 - Caterpillar

System Operation Description:Use this procedure under the following situation:Use this procedure to determine that the vehicle wiring and the ECM are functioning properly for the features of Dedicated PTO.The following background information is related to this procedure:INPUT #1The input 1 is used for the circuit for the PTO on/off switch when the PTO Configuration is programmed to "Cab Switches", "Remote Switches", or "Remote Throttle".When the PTO on/off switch is on, the ECM will be in Dedicated PTO mode.When the ECM is in the Dedicated PTO mode the PTO Top Engine Limit (TEL) is activated. The engine may proceed directly to the PTO engine rpm set speed if the parameter is programmed. If a PTO switch on lamp is connected to the output 1, the PTO switch on lamp will turn on whenever the PTO on/off circuit is on.If the problem is with undetermined PTO kickouts, use the following procedure:Operate the vehicle in PTO mode.After the kickout, review the status parameter on ET. The status parameter indicates the cause of the kickout. This must be performed before the ignition key switch is turned off. It is important to remember that the parameter will only indicate the last kickout since the ECM has been powered by the ignition key switch.This parameter is blank when the ECM is first powered up. If this parameter is blank, "No Occurrence" or "Not Kicked Out" is indicated. This parameter remains blank until the ECM detects the use of the PTO mode. Also, this parameter remains blank until the ECM detects the disengagement of PTO mode. Refer to Table 1 in order to interpret the status parameter.The following kickout status parameter is available:
PTO kickoutPTO interlocks may also be connected in series with the PTO on/off switch. The interlocks are intended to prevent the PTO on/off circuit from activating unless certain conditions are met.INPUT 2The input 2 is used for the PTO set/rpm increase switch when the "PTO Configuration" is programmed to "Remote Switches" or "Remote Throttle".INPUT 3The input 3 is used for the PTO resume/rpm decrease switch when the "PTO Configuration" is programmed to "Remote Switches" or "Remote Throttle". The PTO Configuration Is Set To Cab Switches.When the "PTO Configuration" is programmed to "Cab Switches" and the PTO on/off switch is on, the following circuits can be used to interrupt a set rpm:
Cruise control set/resume switch
Service brake pedal position switch 1
Service brake pedal position switch 2
Clutch pedal position switch
Neutral switch
Cruise Control Pause SwitchWhen the "PTO Configuration" is programmed to "Cab Switches" and the PTO on/off switch is on, the cab