955539 Volvo.Penta Hexagon screw

Illustration 1 g01300262
The GSOV is controlled by the customer's equipment.
The GSOV is controlled by the engine's control system. The engine harness is used for the connection. The customer may supply an additional switch in the electrical circuit for the GSOV. If the customer does not provide an optional switch, the circuit must be closed. Refer to Illustration 2 for an example of this type of installation.
Illustration 2 g01300271
The GSOV is controlled by the engine's control system.
The GSOV is controlled by the engine's control system. The GSOV is connected to a harness that is provided by the customer. The customer may supply an additional switch in the electrical circuit for the GSOV. Refer to Illustration 3 for an example of this type of installation.
Illustration 3 g01300374
The GSOV is controlled by the engine's control system. The GSOV is connected via wiring that is provided by the customer.
Test Step 1. Inspect the Electrical Connectors and Wiring
Remove the electrical power from the engine. Note: For the following steps, refer to Troubleshooting, "Electrical Connectors - Inspect".
Thoroughly inspect the following connectors and the wiring harnesses for the connectors:
J2/P2 connectors
J6/P6 and J7/P7 connectors on the terminal box
Fuel control relay's electrical connector
Check the torque of the allen head screw for the ECM connectors.
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the fuel control relay.
Illustration 4 g01054878
Typical fuel control relay
Check the harness and wiring for abrasion and for pinch points from the fuel control relay to the ECM. Expected Result:All of the connectors, pins, and sockets are connected properly. The connectors and the wiring do not have corrosion, abrasion, or pinch points.Results:
OK - The components are in good condition with proper connections. Proceed to Test Step 2.
Not OK - The components are not in good condition and/or at least one connection is improper.Repair: Perform the necessary repairs, when possible. Replace parts, if necessary.STOPTest Step 2. Check for Diagnostic Codes
Connect Cat ET to the service tool connector. Refer to Troubleshooting, "Electronic Service Tools".
Establish communication between Cat ET and the ECM.
Wait for 30 seconds and check for an active 17-5 diagnostic code. If there is an active 17-5 diagnostic code, proceed to the “Results” for this Test Step. Otherwise, continue this procedure.Note: The 17-5 diagnostic code cannot be detected when the output for the fuel control relay is ON. The output is ON when the engine control is in the START mode and the engine speed is not zero.
Use Cat ET to check the logged diagnostic codes. If there is a 17-6 diagnostic code or a 17-12 diagnostic code, clear the code. Note: In order for the ECM to check for a 17-6 diagnostic code, the sequence for engine start-up must be initiated. In order for the ECM to check for a 17-12 diagnostic code, the engine must be shut down after the engine is running.
Attempt to start the engine. If the engine starts, set the engine control to the STOP mode after the engine reaches idle speed.
Use Cat ET in order to check for a logged 17-6 diagnostic code or a 17-12 diagnostic code again. Expected Result:When the engine control was in the STOP mode, there was no active 17-5 diagnostic code.After the engine was cranked or the engine was stopped, there was no logged 17-6 or 17-12 diagnostic code.Results:
OK - No diagnostic codes were generated. The output for the fuel control relay seems to be OK at this time. The initial diagnostic code was probably caused by a poor electrical connection.Repair: If there is an intermittent problem that is causing the codes to be logged, refer to Troubleshooting, "Electrical Connectors - Inspect".STOP
Not OK (17-5 diagnostic code) - A 17-5 diagnostic code was activated. This can be caused by an actual open circuit or by a short circuit to the +Battery side.Repair: Determine the engine's configuration.If the ECM is controlling the GSOV, proceed to Test Step 3. If the ECM is not controlling the GSOV, proceed to Test Step 9.
Not OK (17-6 diagnostic code) - After the engine was cranked, a 17-6 diagnostic code was generated.Repair: Determine the engine's configuration.If the ECM is not controlling the GSOV, the wiring that is connected to terminal P2-11 has a short to ground. The short circuit could be inside the terminal box or in the engine's wiring harness. Repair the wiring, when possible. Replace parts, if necessary. STOP.If the ECM is controlling the GSOV, proceed to Test Step 7.
Not OK (17-12 diagnostic code) - When the engine control was set to the STOP mode, the GSOV did not close. A 17-12 diagnostic code was generate