PLATE & FILM GP 1113743 - Caterpillar

Illustration 1 g03372265
Schematic of the Door Switch (Implement Lockout)
(Switch is shown in the Door Open position)
This diagnostic code is associated with the Door Switch (Implement Lockout). The switch is connected to two inputs of the ECM. One contact is normally open. The other contact is normally closed. Wire G943-BU(Blue) is open and wire G944-YL(Yellow) is closed, when the Door Switch (Implement Lockout) is in the Door Open position. Wire G943-BU(Blue) is closed and wire G944-YL(Yellow) is open, when the Door Switch (Implement Lockout) is in the Door Closed position. Refer to table 1.
Table 1
Status of the Door Switch (Implement Lockout)
Door Switch Position G943-BU(Blue) Circuit
J2-52
Contact B G944-YL(Yellow) Circuit
J1-54
Contact C
Open Up Open Closed
Closed Down Closed Open This FMI 03 means that the ECM has determined that both contacts are open.Note: The following test procedure may create other diagnostic codes. Ignore these diagnostic codes and clear the diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of CID 2471 FMI 03 is active before performing this procedure.Test Step 1. Check The Ground Circuit Of The Switch In The Harness
Disconnect the negative battery cable and turn the key start switch to the OFF position.
Disconnect the machine harness connector(s) from the ECM.
Measure the resistance from Frame Ground of the machine to contact A (wire 200-BK(Black)) . Expected Result: