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F.P.TAKE-OFF G 7B0250 - Caterpillar

7B0250 F.P.TAKE-OFF G Caterpillar parts F
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Caterpillar 7B0250 F.P.TAKE-OFF G

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Illustration 1 g01209056
Rear axle cooling fan solenoid connections
This diagnostic code is associated with the rear axle cooling fan (attachment) solenoid. 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 0796 FMI 06 diagnostic code is active, the machine response will be:
The rear axle cooling fan will not operate correctly.
The coolant temperature may increase.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 0796 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 0796 FMI 06 changes to CID 0796 FMI 05 when the solenoid is disconnected.Results:
YES - CID 0796 FMI 06 changes to CID 0796 FMI 05 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 0796 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 J2-1 (wire C411-OR(Orange)) to frame ground or to a ground contact on connectors J1 or J2. The ground contact on connector J2 is J2-3. The ground contacts on connector J1 are J1-2, J1-5, J1-7, J1-8, J1-15, J1-16 and J1-21. Expected Result:The resistance measurement is greater than 5000 ohms.Results:
OK - The resistance measurement is greater than 5000 ohms. The machine harness is correct. Proceed to Test Step 3.
NOT OK - The resistance measurement is not greater than 5000 ohms. There is a short in the machine harness. The short is between J2-1 (wire C411-OR(Orange)) and one of the grounded wires in the machine harness. Repair: Repair the machine harness or replace the machine harness. STOPTest 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 0796 FMI 06 code. Expected Result:

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