DIFFERENTIAL GP 1392276 - Caterpillar

Illustration 1 g03364056
Schematic of the directional and flow control solenoids
This diagnostic code is associated with the solenoid valve (Counterclockwise Direction). The FMI 06 means that the ECM has determined that the current of the solenoid is above normal or grounded circuit.The possible causes of the diagnostic code are listed:
The energize circuit of the solenoid is grounded.
The counterclockwise direction solenoid has failed.
The seat direction control relay has failed.
The ECM may have failed, but 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 3437 FMI 06 is active before performing this procedure.Note: Use the 146-4080 Digital Multimeter for the measurements in this procedure.System Response:When this diagnostic code occurs, the swivel seat will not move to the counterclockwise position.Test Step 1. CHECK THE SOLENOID
At the machine harness connector for the seat direction relay, place a jumper wire from contact 4 (wire R825-BU(Blue)) to contact 1 (wire R865-PU(Purple)).
Turn the disconnect switch and the key start switch to the ON position. Do not start the engine.
Disconnect the solenoid with the active diagnostic code from the machine harness.
Operate the machine.
Observe the status of the CID 3437 FMI 06. Expected Result:The CID 3437 FMI 06 changes to CID 3437 FMI 05.Results:
YES - CID 3437 FMI 06 changes to CID 3437 FMI 05 with the jumper wire installed. 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 - The diagnostic code remains active. Proceed to Test Step 2.Test Step 2. CHECK THE HARNESS FOR A SHORT CIRCUIT
Turn the key start switch and the disconnect switch to the OFF position.
Remove the seat direction relay.
At the seat direction relay connector, measure the resistance from contact 3 (wire R826-YL(Yellow)) to contact 1 (wire R826-YL(Yellow)) of the solenoid connector. Expected Result:The resistance is greater than 5 ohms.Results:
YES - The resistance is greater than 5 ohms. The machine harness is correct. Proceed to Test Step 3
NO - The resistance is less than 5 ohms. The resistance measurement is not correct.Repair: The problem is in (wire R826-YL(Yellow)) of the machine harness. Repair the machine harness or replace the machine harness.STOPTest Step 3. CHECK THE HARNESS FOR A SHORT CIRCUIT
Turn the key start switch and the disconnect switch to the OFF position.
The seat direction relay remains removed.
Disconnect the machine harness connectors from the ECM.
At the machine harness connector, measure the resistance from signal contact J1-52 (wire R865-PU(Purple)) to frame ground (wire 202-BK(Black)). Expected Result:The resistance is greater than 5 ohms.Results:
YES - The resistance is greater than 5 ohms. The machine harness is correct. Proceed to Test Step 4.
NO - The resistance is greater than 5 ohms. The resistance measurement is not correct.Repair: The problem is in (wire R865-PU(Purple)), (wire 202-BK(Black)) or (wire R825-BU(Blue)) of the machine harness. Repair the machine harness or replace the machine harness.STOPTest Step 4. CHECK IF THE