KNOWN INFO
Transmission oil level OK.
Fuse OK.
Batteries OK.
Engine does not overheat.
Transmission oil cooler tubes
OK.
Transmission oil cooler hoses
OK.
POSSIBLE PROBLEMS
Faulty transmission oil cooler.
Faulty transmission oil filters.
Faulty WTEC II cab
transmission harness.
Faulty transmission external
wiring harness.
Faulty WTEC II TEPSS.
NO
YES
Replace transmission oil cooler
(para 8-10) and change transmission
oil (Appendix H).
TEST OPTIONS
Transmission Oil Inspection
REASON FOR QUESTION
Contaminated transmission oil
may cause WTEC II TEPSS to
display main code 24 and/or
33.
Is transmission oil free from
coolant contamination?
3.
WARNING
CAUTION
Read WARNING and
CAUTION on
following page.
f5. WTEC II TRANSMISSION ECU PUSHBUTTON SHIFT SELECTOR (TEPSS) DISPLAYS MAIN
CODE 24 AND/OR 33 AND ANY SUB CODE (CONT)
TM 9-2320-365-20-2
2-1388 Change 1
