CORE AS-AFTERCOOLER 3182523 - Caterpillar

Illustration 1 g00562847
Hoist control valve
(1) Proportional solenoid (Pump to control for hoist rod end)
The location for the proportional solenoid (pump to control for hoist rod end) is under the chassis between the transmission and the torque converter.
Illustration 2 g02538240
Schematic of the proportional solenoid (pump to control for hoist rod end).
Note: The approximate coil resistance of the solenoid is 5 ohms at 25 °C (77 °F).This diagnostic code is associated with the proportional solenoid (pump to control for hoist rod end). The FMI 03 means that the electronic control module (ECM) 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 ECM has failed. A failure of the ECM 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 1242 FMI 03 is active before performing this procedure.Note: Use a calibrated 146-4080 Digital Multimeter for the measurements in this procedure.System Response:The ECM will turn off the solenoid for the hoist pilot system enable. This action will cause the hoist system to be forced to the hold mode.After the diagnostic goes away, the ECM will continue to command the system to be in the hold mode until the hoist lever is moved into the hold mode.Test Step 1. CHECK THE ENERGIZE CIRCUIT OF THE SOLENOID FOR A SHORT TO THE +BATTERY CIRCUIT.
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the machine harness connectors from the solenoid and the ECM.
At the machine harness connector for the ECM, measure the resistance from contact J1-59 (wire J828-BU(Blue)) to all contacts that are used in the machine harness connectors for the ECM.Expected Result:Each resistance measurement is 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 J1-59 (J828-BU(Blue)) and the circuit that has a low-resistance measurement.Repair: Repair the machine harness or replace the machine harness.STOPTest Step 2. CHECK IF THE DIAGNOSTIC CODE IS STILL ACTIVE.
Inspect the contacts and clean the contacts of the harness connectors.
Reconnect all harness connectors.
Turn the disconnect switch and the key start switch to the ON position.
Operate the machine.
Determine if the CID 1242 FMI 03 is active.Expected Result:The CID 1242 FMI 03 is active.Results:
YES - The CID 1242 FMI 03 is active. The problem has not been corrected. The ECM may have failed.Repair: A failure of the ECM is unlikely. Exit this procedure and perform this procedure again. If the cause of the diagnostic code is not found, contact your dealership for possible consultation with Caterpillar. This consultation may greatly reduce the repair time. Refer to the Testing and Adjusting, "Electronic