S253 12 NONVOLATILE MEMORY FAILURE

TM 9-2320-364-20-1

2-14. DDEC III/IV TROUBLESHOOTING (CONT).

Section IV. TROUBLESHOOTING CHARTS (Cont.)

E. FLASH CODE:

J1587 CODE:

S253 12 NONVOLATILE MEMORY FAILURE

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/IV was started at step START-1, pg 2-539, and you have now been referred here.

STEP/SEQUENCE

RESULT

WHAT TO DO NEXT

53-1

Replace ECM

An error has been detected in

Replace ECM (para 7-57).

EEPROM in the ECM which will

cause it to not log codes correctly

or at all.