PANEL 1352251 - Caterpillar

Illustration 1 g01143517
Schematic of the Auxiliary Hydraulic Valve Flow Solenoid (aux sol. 1) (attachment)This diagnostic code is associated with the auxiliary hydraulic valve flow solenoid (aux sol. 1). The FMI 06 means that the ECM has determined that the current for the solenoid is above normal. There may be a short to ground in the solenoid circuit. Some 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. System Response:When the CID 1843 FMI 06 diagnostic code is active, the machine response will be:
The warning indicator on the Monitor will illuminate.
The tool that is controlled by the left attachment pedal will not operate.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 1843 FMI 06 is active before performing this procedure.Test Step 1. CHECK THE SOLENOID
Turn the disconnect switch and the key start switch to the ON position. Do not start the engine.
Observe the status of the diagnostic code.
Disconnect the solenoid with the active diagnostic code from the machine harness. Expected Result:CID 1843 FMI 06 code changes to CID 1843 FMI 05 code when the solenoid is disconnected.Results:
YES - CID 1843 FMI 06 code changes to CID 1843 FMI 05 code when the solenoid is disconnected. The circuit is correct.Repair: The solenoid has failed. Repeat this test "CHECK THE SOLENOID" in order to verify the solenoid failure. Replace the solenoid. Stop.
NO - CID 1843 FMI 06 remains active. Proceed to Test Step 2.Test Step 2. CHECK THE ENERGIZE CIRCUIT OF THE SOLENOID FOR A SHORT TO GROUND
Turn the key start switch and the disconnect switch to the OFF position.
The solenoid remains disconnected from the machine harness.
Disconnect the machine harness ECM connectors J1 and J2 from the ECM.
At the machine harness ECM connectors, measure the resistance from the signal contact J2-41 (wire M745-GY) to all ground contacts on connectors J1 and J2. The ground contacts on connector J2 are J2-2, J2-12, J2-13, J2-22, J2-36, J2-37, J2-46, J2-49, J2-52, J2-56, J2-59 and J2-69. The ground contact on connector J1 is J1-9.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 3.
NOT OK - Each resistance measurement is not greater than 5000 ohms. There is a short in the machine harness. The short is between J2-41 (wire M745-GY) and the circuit with the low resistance measurement.Repair: Repair the machine harness or replace the machine harness. Stop.Test Step 3. CHECK IF THE DIAGNOSTIC CODE REMAINS
Inspect the contacts of the harness connectors that are used in the solenoid circuit. Ensure that the contacts are secure. Clean all of the contacts in the harness connectors.
Reconnect all harness connectors.
Turn the disconnect switch and the key start switch to the ON position.
Operate the machine.
Check the status of the CID