FREE Caterpillar ET Software: PTO Configuration Test - Remote Switches

Remote Switches

Figure 1.1 - Remote Switches (Increase/ Decrease)

1). Use CAT ET to Check the Programming of the Parameter Dedicated PTO Parameters.

→Connect CAT ET to the data link connector. Read More: How to Connecting Caterpillar ET Software to the ECM.

→Access the Dedicated PTO Parameters on CAT ET. Note the programming of the parameter PTO Configuration (Remote Switches). Read More: PTO Configurations for On-Highway Trucks (Caterpillar Engines).

Figure 1.2 - PTO Configuration (Remote Switches)

2). Check the Circuit for the PTO On/Off Switch.

→Activate the PTO operation.

→Access the CAT ET Status screens that display the following status parameters. Read More: Status Tool on Caterpillar ET Software.

• PTO Config (Remote Switches)
• PTO On/Off Switch - J1/P1:56

→Verify that each of the interlocks for the PTO are set. Then, while the CAT ET Status screen is being monitored, move the PTO On/Off Switch to the ON and OFF position.

Figure 1.3 - PTO On/Off Switch (ON)

3). Check the Status of the Set/ Resume Input.

→View the Status parameter on CAT ET for the Remote PTO Set Switch - J1/P1:58 and for the Remote PTO Resume Switch - J1/P1:60.

→While the Status screen of CAT ET for the switch is being monitored, perform the following procedure in order:

-Put the Remote PTO Set/Resume Switch in the Set position. The status of the Remote PTO Set Switch - J1/P1:58 changes from "OFF" to set switch "ON" when the Remote PTO Set Switch is moved to the SET position, and the Engine RPM will increase. 

Figure 1.4 - Remote PTO Set Switch (ON)

-Put the Remote PTO Set/Resume Switch in the Resume position. The Status of the Remote PTO Resume Switch - J1/P1:60 changes from "OFF" to resume switch "ON" when the Remote PTO Resume Switch is moved to the RESUME position, and the Engine RPM will decrease.

Figure 1.5 - Remote PTO Resume Switch (ON)

-Also monitor the Status of the PTO Set RPM, will changes from 0 RPM to actual Engine Speed (will equal) and the PTO Kickout (Not Kicked Out).

Figure 1.6 - PTO Set RPM

-PTO Kickout value will changes to PTO Switch Turned Off when the PTO On/Off Switch is turned to the "OFF" position.

Figure 1.7 - PTO Kickout (PTO Switch Turned Off)

4). Monitor using the Real Time Graphing while simulate the PTO Configuration Test (Remote Switches). Read More: Real Time Graphing using Caterpillar ET Software.

Figure 1.8 - PTO Config (Remote Switches)

When the PTO Configuration is programmed to Remote Switches or to Remote Throttle and the PTO On/Off Switch is On, the following circuits are ignored:

• Service Brake Pedal Position Switch 1

• Service Brake Pedal Position Switch 2

• Clutch Pedal Position Switch

• Neutral Switch

• Accelerator Pedal Position Sensor

• Cruise Control Set/Resume Switch that is located in the Cab.

Read More:

PTO Throttle Signal Invalid (Diagnostic Code: SPN 644 - FMI 8)

Throttle Position Signal Abnormal (Diagnostic Code: SPN 91 - FMI 8)

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