S254 12 ANALOG TO DIGITAL (A/D) CONVERSION FAILURE

TM 9-2320-364-20-1

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

Section IV. TROUBLESHOOTING CHARTS (Cont.)

E. FLASH CODE:

J1587 CODE:

S254 12 ANALOG TO DIGITAL (A/D) CONVERSION 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

52-1

Multiple Code Check

Were there any other codes

Yes.

Service other codes first.

besides 254/12?

No.

Replace ECM (para 7-57). Then

go to START-1, pg 2-539.