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TM 9-2320-364-20-2
2-818
1. CODE 12: LOW OIL LEVEL.
INITIAL SETUP
1.
Add oil to
transmission
(Para 8-3).
Verify repair, go to
Step 5 of this Fault.
START
YES
NO
High gear restricted.
“CHECK TRANS” light ON.
“DO NOT SHIFT” light OFF.
Low transmission oil level.
Transmission internal wire
harness faulty.
Oil level pressure switch faulty.
Cab/transmission wire harness
faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Visual inspection.
If transmission oil level is low,
ATEC ECU will register a Code
12 fault.
2-15. ATEC TROUBLESHOOTING (CONT).
Tools and Special Tools
Tool Kit, General Mechanic’s: Automotive
(Item 74, Appendix G)
STE/ICE-R (optional) (Item 3, Appendix G)
Breakout Harness (Item 36, Appendix G)
Multimeter (Item 44, Appendix G)
Pressure Test Kit (Item 50, Appendix G)
Reader, Diagnostic (Item 53, Appendix G)
Personnel Required
Two
Equipment Condition
Engine OFF, (TM 9-2320-364-10)
Parking brake applied, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
Left rear skirt removed, (Para 17-34)
References
TM 9-2320-364-10
TM 9-4910-571-12&P
Materials/Parts
Sealant, Teflon Pipe (Item 71, Appendix C)
Is transmission oil level
correct?
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