Message Name:

LH ENG FEED SOV ELECT PWR /WRG

Message Code:

2844618PK

Associated CAS:

L ENG FUEL SOV
(Caution)

L ENG FEED VALVE LMS/WRG FAULT shows when the conditions that follow occur:

1. The Left Engine Fire-Handle is pulled.
2. The Left Engine-Feed Shutoff-Valve is open.
3. The Electrical Management System (EMS)/DC Power Center (DCPC) has a failure.

OR,

1. The Left Engine Fire-Handle is not pulled.
2. The Left Engine-Feed Shutoff-Valve is closed.
3. The EMS/DCPC has a failure.

• DC Power Center (DCPC) (A63)
• Left Engine Fuel Shut-off Valve (CB-A3)
• Associated Wiring

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

1. Using CAIMS, verify if messages related to the 28 VDC emergency bus or DCPC are shown:

   1. If YES, troubleshoot them first and continue with next step.
   2. If NO, continue with next step.

2. Using CAIMS, select SYSTEM DIAG - ATA 24 - DCPC A(B) - LRU TEST - LOAD STATUS and verify the Circuit Breaker (CB) status.

   1. If the CB status is IN, continue with next step.
   2. If the CB is OUT/TRIPPED go to Observed fault 245OBS001 - THERMAL CIRCUIT BREAKER TRIPPED and perform troubleshooting.

3. Check for 28 VDC at DCPC connector A63P3-B.

   1. If 28 VDC is present, continue with next step.
   2. If voltage is not present, go to step 5.

4. Disconnect the the L ENG SOV connector L38P1 and perform a 28 VDC voltage check as follows:
   

   From	To	Expected Result	Result
   L38P1-D	Ground	28 VDC

   NOTE: Make sure the Fire Handle is pushed IN

   1. If voltage is present, replace the L ENG SOV.
   2. If voltage is not present, perform a wiring check between the DCPC and the L ENG SOV and repair defective wiring if required.

5. Replace the L ENG FUEL SOV circuit breaker (CB-A3).

   1. If system checks are good, do close out.
   2. If fault remains, continue with next step.

6. Replace the DCPC.
7. Do close out.