(1) Position master power switch to on
(TM 9-2320-365-10).
(2) Press MODE button on WTEC III TPSS
to bring up second code (if any) (para 8-5).
(3) If main code 33 displays on WTEC III TPSS,
common ground may have been lost. If main
code 21 is the only code displayed, TPS may
be faulty. Go to step 4 of this fault.
(4) Position master power switch to off
(TM 9-2320-365-10).
Change 1 2-1539
TM 9-2320-365-20-2
