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VALVE 2H9482 - Caterpillar



2H9482 VALVE Caterpillar parts VALVE
Rating:
11
Alternative (cross code) number:
CA2H9482
2H-9482
2H9482
Caterpillar 2H9482 VALVE
Weight: 1 pounds 0 kg.

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Illustration 1 g01270890
Schematic of the Left Drive (Reverse) Pump Solenoid CircuitThis diagnostic code is recorded when the ECM reads the voltage of the solenoid circuit as being above normal or shorted to +battery.The possible causes of this diagnostic code are listed:
The energize circuit of the solenoid is shorted to the +battery circuit.
The ECM has failed. This is unlikely. Note: Ensure that CID 1704 FMI 03 is on hold and that the diagnostic indicator is illuminated. The nominal coil resistance at room temperature is 4.1 .3 ohms.System Response:The action lamp will flash. The machine will be brought to a stop. The park brake will engage.Test Step 1. CHECK THE SOLENOID CIRCUIT FOR A SHORT TO THE +BATTERY CIRCUIT.
Disconnect the negative battery cable and turn the key start switch to the OFF position.
Disconnect the machine harness from the solenoid.
Disconnect J1 and J2 machine harness connectors from the ECM.
At the machine harness connector, measure the resistance from signal contact J1-49 (wire K943-OR) 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:
OK - Each resistance measurement is greater than 5000 ohms. The machine harness is correct. Proceed to test step 2.
NOT OK - One or more resistance measurements is not correct. There is a short in the machine harness. The short is between signal contact J1-49 (wire K943-OR) and the circuit with the low resistance measurement. Repair the machine harness or replace the machine harness.STOPTest Step 2. CHECK IF THE DIAGNOSTIC CODE REMAINS.
Inspect the contacts of the harness connectors and clean the contacts.
Reconnect all harness connectors.
Reconnect the negative battery cable and turn the key start switch to the ON position.
Clear all of the logged diagnostic codes.
Operate the machine.
Check if the CID 1704 FMI 03 is present. Expected Result:The diagnostic code for the solenoid is NOT present. Results:
YES - The diagnostic code is NOT present. 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 CID 0354 FMI 05 diagnostic code is not active. The diagnostic code does not exist at this time. Repair: The initial diagnostic code was probably caused by a poor electrical connection at one of the harness connectors that was disconnected and reconnected. Resume normal machine operation.STOP


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