HOSE AS 3908412 - Caterpillar

Illustration 1 g00889802
Schematic for the power shift solenoidTest Step 1. Inspect Electrical Connectors and Wiring.
Turn the keyswitch to the OFF/RESET position.
Thoroughly inspect ECM connector J1/P1, machine connector J3/P3, and the connector for the power shift solenoid J113/P113. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Inspect the following components for damage, corrosion, and incorrect attachment:
Battery posts
Alternator
Breaker
Engine ground
Chassis groundExpected Result:All connectors, pins, and sockets should be completely inserted and coupled. The harness and wiring should be free of corrosion, abrasion, and pinch points. All connections and grounds should be tight and free of corrosion.Results:
OK - Proceed to Test Step 2.
Not OK - Repair: Repair the connectors or wiring and/or replace the connectors or wiring. Ensure that all of the seals are properly in place and that the connectors are completely coupled.Verify that the repair eliminates the problem. Stop.Test Step 2. Check the Solenoid for an Internal Short or Open.
Disconnect the connector for the power shift solenoid J113/P113.
Measure the resistance between P113:1 and P113:2.Expected Result:The resistance should be between 7 Ohms and 17 Ohms.Results:
OK - Proceed to Test Step 3.
Not OK - The power shift solenoid is faulty.Repair: Replace the power shift solenoid.Verify that the repair eliminates the problem. Stop.Test Step 3. Check the Resistance Through the Harness.
Illustration 2 g00759449
ECM connector P1 (ECM side)
Disconnect ECM connector J1/P1.
Use a suitable piece of wire to short P2:43 (Power Shift Solenoid) to P2:51 (Solenoid Return).
Measure the resistance between J113:1 and J113:2.
Remove the wire short.Expected Result:The resistance should be less than 10 Ohms.Results:
OK - Proceed to Test Step 4.
Not OK - There is an open circuit or there is excessive resistance in the harness.Repair: Repair the circuit.Verify that the repair eliminates the problem. Stop.Test Step 4. Check For Shorts In Harness
Turn the keyswitch to the OFF/RESET position.
Disconnect ECM connector J1/P1 and power shift solenoid connector J113/P113.
Measure the resistance between engine ground and each terminal of the connector for the power shift solenoid J113.
Measure the resistance between both terminals of the connector for the power shift solenoid J113.Expected Result:Resistance should be greater than 20,000 Ohms for each reading.Results:
OK - Proceed to Test Step 5.
Not OK - There is a short in the harness between the ECM and the power shift solenoid.Repair: Repair the circuit.Verify that the repair eliminates the problem. Stop.Test Step 5. Check the Voltage for the Solenoid at the ECM.
Reconnect all connectors.
Connect Cat ET to the service tool connector.
Start the engine.
Ensure that the keyswitch is in the ON position.
Check for any active diagnostic codes.Expected Result:The following diagnostics should not be active:
581-05 "Power Shift Solenoid open circuit"
581-06 "Power Shift Solenoid short to ground"Results:
OK - The solenoid and the harness are OK.Repair: If the system does not function properly refer to Troubleshooting, "Unstable Hydraulic Function". Stop.
Not OK - The ECM is faulty.Repair: Replace the ECM. Refer to Troubleshooting, "Replacing the ECM".Verify that the repair eliminates the problem. Stop.