BEARING SET-MAIN 1145611 - Caterpillar

System Operation Description:Use this procedure under the following situation:Use this procedure to determine if the circuit for the Ignore Brake/Clutch Switch is operating correctly.Note: This feature is available with MAR98 and newer software. This feature is also available with OCT01 and newer software. The parameter "Input # 5" has been replaced with the parameter "Ignore Brake/Clutch Switch". To use this feature, the "Ignore Brake/Clutch Switch" parameter must be programmed to "J1/P1:47".The following background information is related to this procedure:The ECM can use various inputs in a number of ways. The inputs depend on the parameter programming. Certain features are available on several different inputs. The configuration for the switch must match the actual switch installation in order for the switch to function properly.Ignore Brake/Clutch SwitchThe ignore brake/clutch switch is typically used with a "Cab Switches PTO Configuration" which requires mobile use of the vehicle during PTO operation. When the ignore brake/clutch switch is ON, depressing the brake or the clutch will NOT disengage PTO operation or a set engine speed. If the "Input # 5" parameter is programmed to "None" (default), this feature is not used. If the "Input # 5" parameter is programmed to "Ignore Brake/Clutch", then the feature is available and the switch circuit should be connected to terminal 47 of the J1/P1 ECM vehicle harness connector.Note: The wiring for your particular application may be slightly different. The circuits for the sensor common are used interchangeably by the OEM of the vehicle. The following circuits are common within the ECM:
The "Input Sensor Common 1" is terminal 18.
The "Input Sensor Common 2" is terminal 3.
The "AP Sensor/Switch Sensor Common" is terminal 5.
Illustration 1 g00682286
Schematic for ignore brake/clutch switch
Illustration 2 g00682292
Terminal Locations for ECMTest Step 1. Inspect Electrical Connectors and Wiring
Thoroughly inspect the ECM vehicle harness connector J1/P1, the connectors, and the firewall bulkhead connectors. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Perform a 45 N (10 lb) pull test on each of the wires in the ECM connector that are associated with the circuit for the Ignore Brake/Clutch Switch.
Check the ECM connector (allen head screw) for the proper torque of 6.0 N m (55 lb in).
Check the harness and the wiring for abrasion and pinch points from the ignore brake/clutch switch to the ECM.Refer to Illustration 2 for terminal locations for the ECM.Expected Result:All connectors, pins, and sockets are completely coupled and/or inserted, and the harness and wiring should be free of corrosion, abrasion or pinch points.Results:
OK - Proceed to Test Step 2.
Not OK - Repair the wiring and connectors or replace the wiring or the connectors. Ensure that all of the seals are properly connected. Verify that the repair eliminates the problem.STOPTest Step 2. Check the Status of the Ignore Brake/Clutch Switch on ET.
Connect ET at the cab data link connector.
Turn the ignition key switch to the ON position.
Operate the switch in the ON and OFF positions.
View the