STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
TM 9-2320-363-20-1
Section 4
TROUBLESHOOTING CHARTS
E. FLASH CODE: 48
J1587 CODE:
P94 1- FUEL PRESSURE LOW
NOTE - This chart is only to be used if.
1)
All basic mechanical checks and physical inspections have been performed with no problem found, and
2)
Diagnosis of DDEC-III was started at step Start-1, pg 3-345.41 and you have now been referred here.
48-1
Multiple Code Check
Were there any other codes
Yes.
Service other codes first.
besides 94/1 ?
No.
Code 94/1 indicates that there
was
an engine running condition
where fuel spill pressure was
lower than it should be. Refer
to engine service manual for
possible causes for low fuel
pressure such as:
1. Plugged fuel filters or lines
2. Missing restrictive fitting
3. Faulty fuel pump
4. Low fuel supply
Change 3 3-345.347