0322968 JOHNSON BEARING,Front

Illustration 1 g00519201
System Schematic For Unexpected ShutdownThe purpose of the CID 0566 is to alert the operator that the GSC+ did not control the engine shutdown. The GSC+ normally controls all engine shutdown functions, for both normal operation and fault shutdowns. If an outside influence causes an engine shutdown, the GSC+ declares a CID 0566. There is only one failure mode for a CID 0566 and it is FMI 07. FMI 07 is an improper mechanical response.This diagnostic code causes the following sequence of events:
On a running engine, the GSC+ detects that engine speed has dropped from rated to 0 rpm when the GSC+ has not called for a shutdown.
The GSC+ determines that no engine speed sensor fault is present that explains the drop in speed signal.
The GSC+ declares a CID 0566 FMI 07 and disables the engine from running or starting.Note: An unexpected shutdown fault (CID 0566) will initiate a circuit breaker shunt trip signal.Note: Diagnostic codes are created when the harness connector (40 contact) is disconnected from the GSC+ during these troubleshooting procedures. Clear these created diagnostic codes after the particular diagnostic codes is corrected and cleared. The possible cause of a CID 0566 FMI 07 is a component that is not under the control of the GSC+ has caused an engine shutdown.The GSC+ treats a CID 0566 FMI 07 as a shutdown fault. Clear the diagnostic code from the fault log after troubleshooting is complete.Note: This procedure requires many voltage measurements during simulated engine cranking. Starting motor fuse F4 on the relay module is removed to prevent activating the starting motor and actual engine cranking does not occur. Voltage measurements must be made quickly before the total cycle crank time (setpoint P017) elapses. The total cycle crank time is usually 90 seconds. See Systems Operation, "Engine/Generator Programming OP5-0". If a voltage measurement takes more than 90 seconds the GSC+ declares an overcrank fault and the overcrank shutdown indicator will FLASH. In order to continue with a voltage measurement, the overcrank fault must be reset by turning the ECS to OFF/RESET and then turn the ECS to START.Test Step 1. PERFORM AN INITIAL CHECK.
Make sure that there are NO OTHER ACTIVE DIAGNOSTIC CODES. This means that there are no diagnostic codes which are showing on the upper display. This means that no shutdown or alarm indicators are flashing. Failure to make sure that there are NO OTHER ACTIVE DIAGNOSTIC CODES may result in erroneous troubleshooting and needless replacement of parts. The operator will make many voltage measurements while the GSC+ is attempting to crank the engine. If the GSC+ detects other faults, the GSC+ will prevent starting by shutting off the fuel and air to the engine. The resulting voltage measurements would then be the exact opposite of the voltage which is expected in the procedures.
Check the fuel level and quality.
Check for a plugged fuel filter.
Check for a plugged air filter.
Refer to the Service Manual for the engine if there is an obvious fault with the engine or the fuel system.
Check the operation of the air shutoff solenoid (if present).Expected Result:The air shutoff solenoid activates and the air shutoff solenoid deactivates. Note: If there is no air shutoff solenoid present, proceed with the "YES" statement.Results:
YES - The air shutoff solenoid can be activated and the air shutoff solenoid can be deactivated. Proceed to test step 2.
NO - The air shutoff solenoid can NOT be activated and the air shutoff solenoid can NOT be deactivated. Proceed to test step 13.Test Step 2. VERIFY THE FAULT.
Check if the CID 0566 FMI 07 is showing. This means that the CID 0566 FMI 07 is active.Expected Result:The CID 0566 FMI 07 is showing as an active diagnostic code.Results:
OK - Only a CID 0566 FMI 07 is showing. Proceed to test step 3.
NOT OK - A CID 0566 FMI 07 is NOT showing. No active CID 0566 FMI 07 exists. Repair: Refer to the Testing and Adjusting, "CID 0168 " procedures for troubleshooting information. Stop.Test Step 3. CHECK THE SYSTEM VOLTAGE.
With the engine off, measure the system voltage at the battery. Make a note of this measurement. This measurement of the system voltage is used for comparison in future steps of this procedure.Expected Result:For a 24 volt system, the system voltage should be from 24.8 to 29.5 DCV. For a 32 volt system, the system voltage should be from 33.1 to 39.3 DCV.Results:
OK - The system voltage is correct. Proceed to test step 4.
NOT OK - System voltage is NOT correct.Repair: For troubleshooting, see Testing And Adjusting, "CID 0168 Electrical System". Stop.Test Step 4. CHECK SETPOINT P001.
Check setpoint P001 for proper programming. "0=ETR", "1=ETS". See Systems Operation, "Engine/Generator Setpoint Viewing OP2".Expected Result:Setpoint P01 should be programmed in order to match the type of fuel control solenoid which is used on the generator set. The 3406C(S/N: 8FS) and 3306B (S/N: 9DS) use the ETR type (P01 = 0) of fuel system.Results:
OK - Setpoint P001 is programmed correctly. Proceed to test step 5.
NOT OK - Setpoint P001 is NOT programmed correctly.Repair: Reprogram setpoint P001. See Systems Operation, "Engine/Generator Programming OP5-0". Stop.Test Step 5. CHECK THE FUSES.
Turn the ECS to OFF/RESET.
Check fuses "F2" and "F10" on the relay module.Expected Result:None of the fuses are open.Results:
OK - None of the fuses are open. Proceed to test step 6.
NOT OK - One or more of the fuses are open. Proceed to test step 7.Test Step 6. CHECK VOLTAGE AT THE RELAY MODULE.
Fuse "F4" remains removed from the relay module.
Prepare to measure the voltage from RM-15 to the "B-" terminal of the relay module.
Turn the ECS to OFF/RESET. Turn the ECS to START.
At the relay module, measure the voltage from RM-15 to the "B-" terminal.Expected Result:The voltage should be 2.0 DCV of the system voltage that was previously measured in Step 3.A.Results:
OK - The voltage is 2.0 DCV of the system voltage that was previously measured in Step 3.A. There is an open circuit between RM-15 of the relay module and the fuel control solenoid.Repair: Repair