FORD 2013 Expedition v.1 - Manual (Page 259)

Explanation of Information Display Warning Messages
Note: Your TBC can be diagnosed by your authorized dealer to
determine exactly which trailer fault has occurred. However, if the fault
is with the trailer this diagnosis is not covered under your Ford
warranty.
TRAILER BRAKE MODULE FAULT: Displays in response to faults
sensed by the TBC (accompanied by a single chime). If this message is
displayed, please contact your authorized dealer as soon as possible for
diagnosis and repair. The TBC may still function, but performance may
be degraded.
WIRING FAULT ON TRAILER: Displays when a short circuit on the
electric brake output wire has occurred. If the WIRING FAULT ON
TRAILER message is displayed and accompanied by a single chime,
with no trailer connected, the problem is with the vehicle wiring between
the TBC to the 7–pin connector at the bumper. If the message is only
displayed with a trailer connected, the problem is related to the trailer
wiring. Consult your trailer dealer for assistance. This can be a short to
ground (i.e., chaffed wire), short to voltage (i.e., pulled pin on trailer
emergency break-away battery) or the trailer brakes may be drawing too
much current.
Points to Remember
Note: Do not attempt removal of the TBC without consulting the
Workshop Manual. Damage to the unit may result.
• Adjust GAIN setting before using the TBC for the first time.
• Adjust GAIN setting (according to procedure above) whenever road,
weather and trailer or vehicle loading conditions change from when
the GAIN was initially set.
• The manual control lever should only be used for proper adjustment
of the GAIN during trailer setup. Misuse, such as application during
trailer sway, could cause instability of trailer or tow vehicle.
• Avoid towing in adverse weather conditions. The TBC does not
provide anti-lock control of the trailer wheels. Trailer wheels can lock
up on slippery surfaces, resulting in reduced stability of trailer and
tow vehicle.
• The TBC is equipped with a feature which reduces output at vehicle
speeds below 11 mph (18 km/h) so trailer and vehicle braking is not
jerky or harsh. This feature is only available when applying the brakes
using the vehicle’s brake pedal, not the TBC.
• The controller interacts with the brake control system and powertrain
control system of the vehicle to provide the best performance on
different road conditions.
Towing 259
2013 Expedition (exd)
Owners Guide gf, 1st Printing
USA (fus)