2H9480 BELLCRANK Caterpillar parts BELLCRANK
Alternative (cross code) number:
Weight: 7 pounds 3 kg.
Illustration 1 g01270821
Schematic of the Left Drive (Forward) Pump Solenoid CircuitThis diagnostic code is recorded when the ECM reads the current of the solenoid as being above normal.The possible causes 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:The action lamp will flash. If the machine is traveling forward, the machine will be brought to a stop. The park brake will engage. If the machine is traveling in reverse, the machine will be limited to half speed.Note: Ensure that CID 1703 FMI 06 for the solenoid is active. Note: The following procedure can create numerous related diagnostic codes. When all harnesses are reconnected, the related diagnostic codes will be shown as being not active. Clear all related diagnostic codes after this procedure is completed.Test Step 1. CHECK THE SOLENOID.
Turn the key start switch to the ON position.
Disconnect the machine harness from the solenoid.
Observe the status of the diagnostic code.Expected Result:The diagnostic code changes from FMI 06 to FMI 05 when the solenoid is disconnected.Results:
YES - FMI 06 changes to 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 - FMI 06 remains active. Proceed to Test Step 2.Test Step 2. CHECK THE SOLENOID CIRCUIT FOR A SHORT TO GROUND.
The machine harness remains disconnected from the solenoid.
Disconnect the negative battery cable and turn the key start switch to the OFF position.
Disconnect the J1 and J2 machine harness connector from the ECM.
At the J1 machine harness connector, measure the resistance from the solenoid contact J1-48 (wire K944-YL) to all contacts that are used in the machine harness connectors for the ECM.Expected Result:Each resistance measurement should be greater than 5000 ohms.Results:
YES - Each resistance measurement should be greater than 5000 ohms. The machine harness is correct. Proceed to test step 3.
NO - There is an short in the machine harness.Repair: The short is between the wire for the solenoid signal and the circuit with the low resistance measurement. Repair the machine harness or replace the machine harness.STOPTest Step 3. CHECK IF THE DIAGNOSTIC CODE REMAINS.
Inspect the contacts and clean the contacts of the harness connectors.
Reconnect all harness connectors.
Reconnect the negative battery cable and turn the key start switch to the ON position.
Clear all inactive diagnostic codes.
Operate the machine.
Stop the machine and place the parking brake switch in the ON position.
Check if the diagnostic code for the solenoid is active.Expected Result:The diagnostic code is NO longer active. Results:
YES - The diagnostic code is NO longer active. The diagnostic code does not exist at this time. Repair: The initial diagnostic code was probably caused by a poor electrical connection or a short at one of the harness connectors that was disconnected and reconnected. Resume normal machine operation.STOP
NO - The diagnostic code has not been corrected. The ECM may have failed.Repair: It is unlikely that the ECM has failed. Exit this