968725 Volvo.Penta O-ring

Table 1
Diagnostic Codes Table
Description Conditions which Generate this Code System Response
E265(3) User Defined Shutdown The engine's Electronic Control Module (ECM) detects ground on the input for the user defined shutdown. The code is logged. The user defined shutdown can be connected to a device in the electrical system that would shut down the engine for any reason. When the signal is grounded, an event code is logged in memory and the injection signals from the ECM stop. Verify that the user has activated the user defined shutdown input.The input must be pulled below 0.5 VDC for one second before the ECM will recognize the shutdown signal.
Illustration 1 g01525032
Typical schematic
Test Step 1. Inspect Electrical Connectors and Wiring
Turn the keyswitch to the OFF position.
Illustration 2 g01234146
Location of ECM connectors
Thoroughly inspect the ECM connector J1/P1. Thoroughly inspect the connectors for the shutdown switch. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Illustration 3 g01525033
P1 ECM Connector
(P1-21) User defined shutdown
Illustration 4 g01206655
Machine Connector
(Terminal 13) User defined shutdown
Perform a 45 N (10 lb) pull test on each of the wires in the ECM connector that are associated with the circuit.
Check the ECM connector (allen head screw) for the proper torque. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Check the harness and the wiring for abrasion and for pinch points. Expected Result:All connectors, pins, and sockets are completely coupled and/or inserted. The harness and wiring are free of corrosion, of abrasion, and of pinch points.Results:
OK - The connectors and wiring are OK. Proceed to Test Step 2.
Not OK - The connectors and/or wiring need repair.Repair: Repair the connectors and/or wiring or replace the connectors or wiring.STOPTest Step 2. Check the Status of the User Defined Shutdown on Caterpillar Electronic Technician (ET)
Ensure that the user defined shutdown switch is in the OFF position.
Observe the status of the shutdown switch on Cat ET.
Engage the parking brake.
Turn the keyswitch to the ON position.
Observe the status for the user defined shutdown on Cat ET. Expected Result:The status reads "Off".Results:
OK - The status reads "Off". The status is correct. Proceed to Test Step 3.
Not OK - The status does not read "Off". The status is incorrect. Proceed to Test Step 4.Test Step 3. Create a Short at the Connector for the User Defined Shutdown
Disconnect the connector for the shutdown switch.
Use a jumper wire to short wire F721-GY(Grey) to the chassis ground. Create the short at the connector for the user defined shutdown. Expected Result:Cat ET indicates "User Shutdown ON" when the wire is shorted to chassis ground.Results:
OK - Cat ET indicates "User Shutdown ON" when the wire is shorted to chassis ground. Cat ET indicates the correct status. The shutdown feature is working properly.Repair: There may be an intermittent problem. If the problem is intermittent, refer to Troubleshooting, "Electrical Connectors - Inspect".STOP
Not OK - Cat ET does not indicate "User Shutdown ON" when the wire is shorted to chassis ground. Cat ET does not show the correct status. Proceed to Test Step 5.Test Step 4. Check the Harness for a Short Circuit
Turn the keyswitch to the OFF position.
Disconnect ECM connector J1/P1.
Measure the resistance at the ECM connector between P1-21 and every pin in ECM connector P1.
Measure the resistance at the ECM connector between P1-21 and the engine ground. Expected Result:The resistance measurement indicates an open circuit.Results:
OK - The resistance measurement indicates an open circuit. Proceed to Test Step 6.
Not OK - The resistance measurement does not indicate an open circuit. There is a short circuit in the harness or a user defined device is activating the shutdown feature.Repair: Repair the connectors and/or wiring or replace the connectors or wiring.STOPTest Step 5. Check the Harness for an Open Circuit
Disconnect ECM connector J1/P1.
Measure the resistance at the ECM connector between P1-21 and engine ground.
Remove the short to ground. Expected Result:The resistance measurement indicates a short circuit.Results:
OK - The resistance measurement indicates a short circuit. The resistance is within acceptable limits. Proceed to Test Step 6.
Not OK - The resistance measurement does not indicate a short circuit. There is an open circuit or excessive resistance in the harness.Repair: Repair the connectors and/or wiring or replace the connectors or wiring.STOPTest Step 6. Short the Wire at the ECM
Remove the wire from the ECM connector at P1-21.
Insert a wire with a socket terminal at one end into the ECM connector at P1-21.
Reconnect ECM connector J1/P1.
Turn the keyswitch to the ON position.
Momentarily short the jumper wire at P1-21 to the chassis ground.
Turn the keyswitch to the OFF position.
Remove the wire short. Reconnect ECM connector J1/P1. Expected Result:Cat ET indicates "User Shutdown ON" with the wire short in place. Cat ET indicates "User Shutdown OFF" when the wire short is removed.Results:
OK - Cat ET indicates "User Shutdown ON" with the wire short in place. Cat ET indicates "User Shutdown OFF" when the wire short is removed. Cat ET indicates the correct status. The feature is working properly.Repair: Repair the connectors and/or wiring or replace the connectors or wiring. There may be an intermittent problem. If the problem is intermittent, refer to Troubleshooting, "Electrical Connectors - Inspect".STOP
Not OK - Cat ET does not indicate "User Shutdown ON" with the wire short in place. Cat ET does not indicate "User Shutdown OFF" when the wire short is removed. Cat ET does not indicate the correct status.Repair: Replace the ECM. Refer to Troubleshooting, "ECM - Replace".STOP