KIT - GASKET 2227987 - Caterpillar

Possible Causes for an FMI 3 Diagnostic Code are:
The return circuit is open.
The signal circuit is open or the alarm is disconnected.
The signal circuit is shorted to the +battery.
The alarm has failed.
The ECM has failed. This condition is unlikely.Possible Causes for an FMI 5 Diagnostic Code are:
The alarm has failed.
The signal circuit for the alarm is shorted to ground.
The ECM has failed. A failure of the ECM is unlikely.Possible Causes for an FMI 6 Diagnostic Code are:
The energize circuit of the feature alarm is shorted to ground.
The feature alarm has failed.
The ECM has failed. This condition is unlikely.
Illustration 1 g03810457
Schematic of the Action Alarm
Note: The diagram above is a simplified schematic of the connections for the Action alarm. The schematic is electrically correct. However, not all the possible harness connectors are shown. For the complete schematic, refer to Electrical Schematic, UENR5399, "994K Wheel Loader Electrical System".Diagnostic Trouble Code Procedure
Before performing this procedure, inspect the harness connectors that are involved in the circuit. Poor connections can often be the cause of a problem in an electrical circuit. Verify that all connections in the circuit are clean, secure and in good condition. If a problem with a connection is found, correct the problem and verify that this diagnostic trouble code is active before performing this procedure.
Table 2
Troubleshooting Test Steps Values Results
1. Identify The Active DTC Code Associated With The Suspect Circuit
Present Code. FMI 3 diagnostic code, proceed to Test Step 2.
FMI 5 diagnostic code, proceed to Test Step 5.
FMI 6 diagnostic code, proceed to Test Step 8.
Begin Process For FMI 3 Troubleshooting HERE
2. Check The Alarm
A. Turn