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TM 9-2320-364-20-2
2-822
1. CODE 12: LOW OIL LEVEL (CONT).
3.
Fault is in
transmission. Notify
DS Maintenance.
YES
NO
High gear restricted.
“CHECK TRANS” light ON.
“DO NOT SHIFT” light OFF.
Transmission oil level OK.
Transmission internal wire
harness OK.
Oil level pressure switch faulty.
Cab/transmission wire harness
faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Continuity test.
STE/ICE-R #91.
If oil level pressure switch fails
in closed position, no continuity
will be measured through
terminals E and H of bulkhead
connector when oil pressure
increases and ATEC ECU will
register a code 12 fault.
WARNING
Is continuity
measured between wires 101
and 122 at transmission
bulkhead connector,
terminals H and E as oil
pressure increases?
Read WARNING
on Page 2-823
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