CYLINDER GP-BUCKET 4T5601 - Caterpillar

Illustration 1 g01895282
Location of the ripper lower solenoid
Illustration 2 g01884113
Schematic of the Auxiliary Port B Solenoid Circuit This solenoid is connected to the Implement ECM 2. The Implement ECM 2 sends the diagnostic information to the Machine ECM via the CAN data link. This diagnostic code is associated with the return circuit for the Ripper Lower Solenoid. The FMI 03 means that the Implement ECM 2 has determined that the voltage of the solenoid circuit is above normal.The possible causes of the diagnostic code are listed:
The solenoid has failed.
The energize circuit of the solenoid is shorted to the +battery circuit.
The Implement ECM 2 has failed. This is unlikely.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 3187 FMI 03 is active before performing this procedure.Note: Use a digital multimeter for the measurements in this procedure.Test Step 1. CHECK THE SOLENOID CIRCUIT FOR A SHORT TO THE +BATTERY CIRCUIT.
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the machine harness from the solenoid and the Implement ECM 2.
At the machine harness connector for the Implement ECM 2, measure the resistance from contact 58 (wire J914-PU) to all contacts that are used in the machine harness connectors for the Implement ECM 2.Expected Result:Each resistance measurement should be greater than 5000 ohms.Results:
OK - Each resistance measurement is greater than 5000 ohms. The machine harness is correct. Proceed to test step 2.
NOT OK - Each resistance measurement is not greater than 5000 ohms. There is a short in the machine harness. The short is between contact 58 (wire J914-PU) and the circuit with the low resistance measurement. Repair the machine harness or replace the machine harness.STOPTest Step 2. CHECK IF THE DIAGNOSTIC CODE IS STILL ACTIVE.
Inspect the harness connectors. Clean the contacts