(1) Position master power switch to on
(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
Change 1 2-1539