Change 1 2-1397
(1) Remove two screws and washers from
(2) Remove screw and washer from front
(3) Remove front grille from cab.
(4) Disconnect connector P119 from
(5) Remove instrument panel assembly for
access (para 7-15).
(6) Disconnect connector J115 (top
connector) from WTEC II TEPSS.
(7) Install jumper wire from connector J119h
(8) Set multimeter to ohms.
(9) Connect positive (+) probe of multimeter
to connector J115-27.
(10) Connect negative (-) probe of multimeter
to connector J115-28 and note reading
(11) Connect negative (-) probe of multimeter
to all other sockets in connector J115, one
at a time, and note reading on multimeter.
(12) Connect negative (-) probe of multimeter
to ground and note reading on
(13) If continuity is not present in step 10, or
continuity is present in step 11 or step 12,
replace WTEC II cab transmission
harness (para 7-86).
(14) Connect connector P119 to connector
(15) Position front grille on cab with washer
(16) Position two washers and screws in front
(17) Tighten screw to 48-60 lb-in. (5-7 N·m).
(18) Tighten two screws to 24 lb-in. (3 N·m).
Inspect connector pins/sockets for damage,
corrosion, and serviceability. Check that
connector pins are not pushed back and
are capable of making good contact.
Use care when testing electrical connectors.
Do not damage connector pins or sockets
with multimeter probes. Failure to comply
may result in damage to equipment.
Loose or dirty connectors may cause
intermittent loss of power to transmission
ECU and diagnostic codes to be logged.
Ensure that all connectors are clean and tight
before performing troubleshooting. Failure to
comply may result in incorrect test results.