CARRIER ASSEM. 6K5624 - Caterpillar

Operator In Seat Sender, Operator Present Logic
The Operator Present Sender is embedded in the seat cushion of the operator seat. The sender is made up of a number small pressure sensors that are arranged in a pattern in the center and forward portions of the seat cushion. The sensors are parallel connected to the two sender circuits. If an individual sensor fails, the signal to the ECM is not interrupted.Changing pressure on the sensors will result in a change in the circuit resistance that the ECM detects. A voltage can be measured between the sensor circuits that will correspond to the resistance of the circuit.The sender resistance range is 90 ohms (0.2 VDC) to 4000 ohms (4.95 VDC).The Implement ECM expects to detect a signal circuit resistance of between 90 ohms (0.2 VDC) to 800 ohms (3.2 VDC) when an operator IS in the seat.The ECM will determine that an operator is NOT in the seat when the signal circuit resistance is between 800 ohms (3.2 VDC) to 4000 ohms (4.95 VDC).If the ECM detects a circuit resistance that is above or below the sensor resistance range, a CID 2113 (Operator in Seat Switch) diagnostic code will be activated.The sender is not serviceable. If the sender has failed, the seat cushion with the embedded sender must be replaced.In addition to the operator present sender, the ECM will also use other machine conditions to determine if an operator is present.The Implement ECM will use ANY ONE of the following conditions to determine if an operator IS present:
The Operator In Seat Sender indicates that an operator is in the seat.OR
Machine travel speed IS GREATER THAN ZERO as reported by the Transmission ECM (transmission output speed sensor).OR
The active gear is NOT NEUTRAL as reported by the Transmission ECM.OR
The service brake pedal IS DEPRESSED more than 10 percent as reported by the Transmission ECM (service brake position sensor).If any one of the conditions listed above is true, the ECM will determine that an operator is present.The Implement ECM will use the following conditions to determine if an operator IS NOT present:
The Operator In Seat Sender indicates that an operator IS NOT in the seat.AND
Machine travel speed IS ZERO as reported by the Transmission ECM (transmission output speed sensor).AND
The active gear IS NEUTRAL as reported by the Transmission ECM.AND
The service brake pedal is NOT DEPRESSED more than 10 percent as reported by the Transmission ECM (service brake position sensor).OR
ALL four of the sensors that are reporting the above conditions are faulted.If ALL of the first four listed conditions listed above are true, the ECM will determine that an operator IS NOT present. In addition, if diagnostic codes are active for all four of the involved sensors, the ECM will determine that an operator IS NOT present.The Implement ECM will report the operator present status on the CAN A Data Link and the CAT Data Link communication systems.Armrest Position Switch
Note: On machines with left joystick only. Machines with steering wheel does not have an