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TM 9-2320-364-20-2
2-904
11. CODE 34: PROM CHECK.
INITIAL SETUP
1.
Fault corrected.
START
NO
“CHECK TRANS” light ON.
“DO NOT SHIFT” light ON.
ECU PROM is loose or faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
DDR test.
If PROM or its retainer becomes
loose, has bent pins(s), or is not
fully seated, ECU will run an
internal self check and register a
code 69 associated with a code
34 fault.
2-15. ATEC TROUBLESHOOTING (CONT).
Tools and Special Tools
Reader, Diagnostic (Item 53, Appendix G)
Equipment Condition
Engine OFF, (TM 9-2320-364-10)
Parking brake applied, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
References
TM 9-2320-364-10
After clearing codes three
times, is code 34 still
displayed on DDR?
Replace transmission
ECU (Para 7-71).
Verify repair, go to
Step 2 of this Fault.
YES
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