PLATE 3905221 - Caterpillar

Illustration 1 g02150079
Connections of the blade control lever
This diagnostic code is associated with the trigger switch. The FMI 03 diagnostic code is recorded when the ECM reads the signal of the inputs and one or both of the inputs are open.The possible causes of this diagnostic code are listed:
The switch has failed.
The ground circuit has an open circuit or a bad connection.
There is an open or a bad connection in one or both of the input circuits.
The ECM has failed. An ECM failure is unlikely.
Table 1
Status of the switch contacts
Switch Position J1-33 (wire J996-BR(Brown)) J1-34 (wire J991-OR(Orange))
Released Closed(1) Open(2)
Pressed Open(2) Closed(1)
(1) Closed to ground (wire T998-BR(Brown))
(2) Open to ground (wire T998-BR(Brown))Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear these diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of CID 2114 FMI 03 is active before performing this procedure.Note: Use a digital multimeter for the measurements in this procedure.Test Step 1. Check the operation of the switch
Turn the key start switch and