TM-9-2320-365-20-2 LMTV Unit Maintenance Manual M1078 Series - Volume 2 Download
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1. Does main code 21 repeat after code has been manually cleared and throttle counts reset? CAUTION Read CAUTION on following page. START Fault corrected. YES NO TEST OPTIONS WTEC III Transmission ECU Reset Check REASON FOR QUESTION Main code 21 may appear on WTEC III TPSS if voltage from TPS WTEC III transmission ECU is temporarily lost. KNOWN INFO Fuse OK. Transmission oil level OK. Batteries OK. POSSIBLE PROBLEMS Faulty WTEC III cab transmission harness. Faulty TPS cable assembly. Faulty WTEC III transmission ECU. References TM 9-4910-571-12&P Personnel Required (2) INITIAL SETUP Equipment Conditions Engine shut down (TM 9-2320-365-10). Tools and Special Tools Tool Kit, Genl Mech (Item 44, Appendix C) Multimeter, Digital (Item 22, Appendix C) STE/ICE-R (Item 39, Appendix C) TM 9-2320-365-20-2 2-1536 Change 1 f30. WTEC III TRANSMISSION PUSHBUTTON SHIFT SELECTOR (TPSS) DISPLAYS MAIN CODE 21 AND ANY SUB CODE