HOUSING AS 3E0144 - Caterpillar

Illustration 1 g01061095
Armrest Position Switch CircuitThis diagnostic code is associated with the armrest position switch. The switch is connected to two inputs of the ECM. The inputs are "Normally Open" and "Normally Closed". One of the inputs is open and the other input is grounded during proper operation.The FMI 04 means that the ECM has determined that the "Normally Open" and "Normally Closed" circuits are grounded.Note: The following test procedure may create other diagnostic codes. Ignore these diagnostic codes and clear these diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of CID 1628 FMI 04 is active before performing this procedure.System Response:When this diagnostic code is active, the ECM will be unable to determine the state of the switch. Pilot hydraulics for implements will be deactivated. The parking brake will only be engaged if there is zero transmission speed detected. The brake lights will be turned off. The oscillating axle will be locked. Travel speed is set to travel speed high. Travel lock is disengaged. The swing brake is turned on. The pilot hydraulics for travel function will be disabled. The fuel pump will be disabled. If all other functions are enabled, the machine will start. On an operating machine, the function of the starter relay is not affected.Test Step 1. CHECK THE SWITCH.
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the machine harness