12110-93740 Suzuki Piston

Table 1
Diagnostic Codes Table    
Code and Description    Flash Code    Conditions which Generate this Code    System Response    
17-5 Fuel Shutoff Valve : Current Below Normal     45     The solenoid voltage is less than 0.75 VDC. Also, the engine speed is greater than 500 rpm for ten seconds. No faults are present.     The code is logged.
The shutoff solenoid is de-energized. The shutoff solenoid is energized after the fault is cleared.    
17-6 Fuel Shutoff Valve : Current Above Normal     45     The solenoid voltage is above 2.5 VDC. Also, the engine speed is greater than 500 rpm for ten seconds. Also, there are no faults for the supply voltage. Also, the supply voltage does not have a fault.     The code is logged.
The shutoff solenoid is de-energized. The shutoff solenoid is energized after the fault is cleared.    The Electronic Control Module (ECM) contains the logic and the outputs for control of starting the engine and stopping the engine. Some of the logic for starting the engine and for stopping the engine is customer programmable. The logic responds to inputs from the following components: engine control switch, emergency stop switch and other inputs.The ECM outputs a signal to the fuel control solenoid in order to control the fuel shutoff valve. To enable fuel flow to the engine, the fuel control solenoid must be energized. The fuel control solenoid may be controlled by the ECM or by the customer's equipment. Use this procedure to troubleshoot either configuration.The most likely cause of a diagnostic code is a poor electrical connection or a problem in a wiring harness. The next likely cause may be a problem with the fuel control solenoid. The least likely cause is a problem with the ECM.The following information describes the system's operation when the fuel shutoff valve is controlled by the ECM:The ECM sends an output signal to the fuel control solenoid that controls the operation of the fuel shutoff valve. This output is energize-to-run. During the crank cycle, when the engine speed exceeds 50 rpm, the ECM provides a voltage of +Battery to the output for the fuel control solenoid. The solenoid becomes energized. This initiates fuel flow to the engine. The ECM removes the voltage from this output in order to stop the engine. The fuel control solenoid becomes de-energized. This stops the fuel flow.
Illustration 1 g01627351
Illustration 2 g01635794
(22) Fuel shutoff solenoid (33) Solenoid groundTest Step 1. Inspect the Electrical Connectors and the Wiring Harness
Remove electrical power from the ECM.
Thoroughly inspect the P5/J5 connector for the fuel shutoff solenoid. Inspect the ECM J14/P14 connector. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the circuit for the fuel shutoff solenoid.
Check the allen head screw on the ECM connector for the proper torque. Refer to Troubleshooting, "Electrical Connectors - Inspect" for the correct torque values.Expected Result:All connectors, pins, and sockets are completely coupled and/or inserted, and 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 - There is a problem with the connectors and/or the wiring.Repair: Repair the wiring and connectors or replace the wiring or the connectors. Ensure that all of the seals are properly connected. Verify that the repair eliminates the problem.STOPTest Step 2. Check the Engine Start-up
Turn the engine control switch to the ON position. The engine should remain in the OFF position.Note: The solenoid should make an audible sound when the solenoid is first energized.
Attempt to start the engine.Expected Result:The engine will start and the engine will run.Results:
OK - The engine will start and the engine will run. Proceed to Test Step 3.
NOT OK - The engine will not start and the engine will not run. Proceed to Test Step 4.Test Step 3. Check the Engine Shutdown
Turn the engine control switch to the OFF position.Expected Result:The engine should shut down.Results:
OK - The engine shuts down.Repair: The fuel shutoff solenoid is working properly. Refer to Troubleshooting, "Electrical Connectors - Inspect" for a intermittent problem.STOP
NOT OK - The engine does not shut down.Repair: Check the linkage for binding. Also, check the plunger for the fuel shutoff solenoid for binding.STOPTest Step 4. Override the Shutoff Solenoid with the Manual Shutoff Lever
Rotate the manual shutoff lever in a clockwise direction. This will override the shutoff solenoid.
Turn the engine control switch to the ON position.
Attempt to start the engine while the manual shutoff lever is held in the clockwise position.Expected Result:The engine should start and the engine should run while the lever is held in the clockwise position.Results:
OK - The engine starts and the engine runs while the manual shutoff lever is held in the clockwise position. Proceed to Test Step 5.
NOT OK - The engine will not start. The fuel shutoff valve is not the problem. Repair: The fuel shutoff valve is not the problem. Refer to Troubleshooting, "Engine Cranks but Does Not Start" for more troubleshooting information.STOPTest Step 5. Check the Solenoid Coil for Shorts or Opens.
Disconnect J5/P5 connector.
Measure the resistance from connector J5-A to connector J5-B.
Measure the resistance from connector J5-A and engine ground.Expected Result:The resistance from connector J5-A to connector J5-B is between 0.8 and 2.0 Ohms. The resistance from connector J5-A and engine ground is greater than 20,000 Ohms.Results:
OK - The resistance from connector J5-A to connector J5-B is between 0.8 and 2.0 Ohms. The resistance from connector J5-A and engine ground is greater than 20,000 Ohms. Proceed to Test Step 6.
NOT OK - The resistance from connector J5-A to connector J5-B is not between 0.8 and 2.0 Ohms or the resistance from connector J5-A and engine ground is less than 20,000 Ohms.Repair: The fuel shutoff solenoid is faulty. Replace the fuel shutoff solenoid.STOPTest Step 6. Check for Shorts in the Harness
Turn the engine control switch to the OFF position.
Disconnect connector J14/P14 and disconnect connector J5/P5.
Measure the resistance between connector pins P5-A and