TM 9-2320-363-20-1
Section 4
TROUBLESHOOTING CHARTS
E. FLASH CODE:
88
J1587 CODE:P109 1 . COOLANT 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.
Code 109-1 indicates that the coolant pressure was operated lower than allowed. Check the engine service manual for
possible causes of low coolant pressure.
Change 3 3-345.411
