HOSE 4927449 - Caterpillar

Illustration 1 g00387052
Solenoid Valve (Lift Linkage Raise) SchematicThis fault is recorded when the ECM detects a short to ground in the electrical path from the ECM to the solenoid. Note: The following test procedure may create other faults. Ignore these created faults and clear the faults when the original fault is corrected. Note: All solenoid return lines connect to contacts J1-7 and J2-3 (wire 716-WH) of the implement ECM.
CHECK SOLENOID.
Turn the disconnect switch and the key start switch to the ON position.
Put the ECM in service mode with the same fault on hold.
Ensure that the fault present indicator is ON.
Observe the ON/OFF status of the fault present indicator.
Disconnect the solenoid with the fault from the machine harness. Expected Result: The fault present indicator remains ON.Results:
YES - The fault present indicator remains ON. This indicates that a fault remains present. The machine harness is faulty or the ECM is faulty. Proceed to Step 2.
NO - The fault present indicator changes from ON to OFF. The solenoid valve has failed or the connecting harness has failed. Repeat this test in order to verify the failure. Repair the solenoid or replace the solenoid. Repair the connecting harness or replace the harness at the solenoid. STOP.
CHECK FOR SHORTED HARNESS.
Turn the disconnect switch to the OFF position.
The solenoid valve of the previous test (CHECK SOLENOID VALVE) remains disconnected.
Disconnect the machine harness from the implement ECM.
At the machine harness connector for the ECM, measure the resistance between the contacts for the faulty solenoid circuit (wire H713-PK and contact J1-2 (ground) (wire A272-BK).Expected Result: The resistance is less than 5000 Ohms.Results:
YES - Resistance is less than 5000 Ohms (continuity). The machine harness is faulty. The corresponding solenoid wire is shorted to ground in the machine harness. Repair the machine harness or replace the machine harness. STOP.
NO - Resistance is greater than 5000 Ohms (no continuity. The harness circuit resistance is correct. It is unlikely that the ECM is faulty. Exit this procedure and perform this CID FMI procedure again. Also recheck if the fault present indicator is ON for this fault. If the cause is not found, replace the ECM. See Testing and Adjusting, "Electronic Control Module (ECM) - Replace". STOP.