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TM 9-2320-364-20-2
2-844
4. CODE 15: REVERSE PRESSURE SWITCH INOPERATIVE (CONT).
2.
Go to Step 3 of this
Fault.
NO
“CHECK TRANS” light ON.
“DO NOT SHIFT” light OFF.
Circuit breakers not tripped.
May also have a Code 32.
No false Code 15.
Short/open circuit in reverse
pressure switch circuit inside
transmission.
Cab/transmission wire harness
faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Continuity test.
STE/ICE-R #91.
If there is continuity in
transmission internal wire
harness or reverse pressure
switch, ATEC ECU will register
a Code 15 fault.
WARNING
Is continuity measured
between wires 101 and 116 at
transmission bulkhead
connector, terminals E
and G?
Fault is in
transmission. Notify
DS Maintenance.
YES
Read WARNING
on Page 2-845
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