NO
YES
Go to step 4 of this fault.
2.
Is main code 33 logged in
conjunction with main code
21?
TEST OPTIONS
Visual Inspection
REASON FOR QUESTION
Main code 21 in conjunction
with main code 33 indicates
loss of common ground.
KNOWN INFO
Fuse OK.
Transmission oil level OK.
Batteries OK.
POSSIBLE PROBLEMS
Faulty WTEC III cab
transmission harness.
Faulty WTEC III transmission
ECU.
Faulty TPS cable assembly.
TM 9-2320-365-20-2
2-1538 Change 1
f30. WTEC III TRANSMISSION PUSHBUTTON SHIFT SELECTOR (TPSS) DISPLAYS MAIN CODE
21 AND ANY SUB CODE (CONT)