CAP-SPOOL 1227358 - Caterpillar

Illustration 1 g01537035
Schematic of the Counterweight Extend Solenoid CircuitNote: Diagnostics may lead to the replacement of the Counterweight Extend Solenoid. This solenoid is part of the actual hook motor. Replace the entire hook motor assembly if the solenoid is faulty.This diagnostic code is associated with the Hook Speed Select Solenoid. The FMI 04 means that the ECM has determined that the voltage of the solenoid circuit is below normal. The possible causes of this diagnostic code are listed:
The energize circuit of the solenoid is shorted to ground.
The solenoid has failed.
The ECM has failed. This is unlikely. 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 and secure. Make sure that all of the connections are in good condition. If a problem with a connection is found, correct the problem and verify that this diagnostic code is active before performing this procedure.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 3197 FMI 04 is active before performing this procedure.Note: Use a Digital Multimeter for the measurements in the procedure.System Response:A level 2 warning will be generated.Test Step 1. CHECK THE SOLENOID.
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