2009 Ford F150 Owner Guide 3rd Printing - Page 260

2009 Ford F150 Manual

Page 260 highlights

Tires, Wheels and Loading 4. Use the GAIN adjustment (+/-) buttons to increase or decrease the GAIN setting to the desired starting point. A GAIN setting of 6.0 is a good starting point for heavier loads. 5. In a traffic-free environment, tow the trailer on a dry, level surface at a speed of 20-25 mph (30-40 km/h) and squeeze the manual control lever completely. 6. If the trailer wheels lockup (indicated by squealing tires), reduce the GAIN setting; if the trailer wheels turn freely, increase the GAIN setting. Repeat Steps 5 and 6 until the GAIN setting is at a point just below trailer-wheel lockup. If towing a heavier trailer, trailer wheel lockup may not be attainable even with the maximum GAIN setting of 10. Explanation of instrument cluster messages: The TBC interacts with the instrument cluster message center. These messages, accompanied by a single chime, will be displayed when the TBC determines a malfunction in the trailer connection, TBC system, or in the trailer. These messages are listed below: TRAILER DISCONNECTED: This message is displayed when a trailer connection was determined and then a disconnection, either intentionally or unintentionally, has been sensed during a given ignition cycle. It is also displayed if a trailer fault occurs causing the trailer to appear disconnected. This message is also displayed during manual activation without a trailer connected. TRAILER BRAKE MODULE FAULT: This message is displayed in response to faults sensed by the TBC. In the event this message is seen, please take your vehicle to an authorized dealer for diagnosis and repair. The TBC may still function, but performance may be degraded. WIRING FAULT ON TRAILER: The TBC is capable of determining certain faults in the vehicle wiring and trailer wiring/brake system. These faults do not mean there is anything wrong with the TBC. This message is displayed when one of the following faults has occurred: • Short circuit on the electric brake output wire: If the WIRING FAULT ON TRAILER message is displayed with no trailer connected, the problem is with the vehicle wiring from the TBC to the 7-pin connector in 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) or a short to voltage (i.e., a pulled pin on trailer emergency break-away battery) or trailer brakes drawing too much current. 260 2009 F-150 (f12) Owners Guide (own2002), 3rd Printing USA (fus)

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4. Use the GAIN adjustment (+/–) buttons to increase or decrease the
GAIN setting to the desired starting point. A GAIN setting of 6.0 is a
good starting point for heavier loads.
5. In a traffic-free environment, tow the trailer on a dry, level surface at
a speed of 20–25 mph (30–40 km/h) and squeeze the manual control
lever completely.
6. If the trailer wheels lockup (indicated by squealing tires), reduce the
GAIN setting; if the trailer wheels turn freely, increase the GAIN setting.
Repeat Steps 5 and 6 until the GAIN setting is at a point just below
trailer-wheel lockup. If towing a heavier trailer, trailer wheel lockup
may not be attainable even with the maximum GAIN setting of 10.
Explanation of instrument cluster messages:
The TBC interacts with the instrument cluster message center. These
messages, accompanied by a single chime, will be displayed when the
TBC determines a malfunction in the trailer connection, TBC system, or
in the trailer. These messages are listed below:
TRAILER DISCONNECTED
: This message is displayed when a trailer
connection was determined and then a disconnection, either intentionally
or unintentionally, has been sensed during a given ignition cycle. It is
also displayed if a trailer fault occurs causing the trailer to appear
disconnected. This message is also displayed during manual activation
without a trailer connected.
TRAILER BRAKE MODULE FAULT
: This message is displayed in
response to faults sensed by the TBC. In the event this message is seen,
please take your vehicle to an authorized dealer for diagnosis and repair.
The TBC may still function, but performance may be degraded.
WIRING FAULT ON TRAILER
: The TBC is capable of determining
certain faults in the vehicle wiring and trailer wiring/brake system. These
faults do not mean there is anything wrong with the TBC. This message
is displayed when one of the following faults has occurred:
Short circuit on the electric brake output wire:
If the
WIRING
FAULT ON TRAILER
message is displayed with no trailer connected,
the problem is with the vehicle wiring from the TBC to the 7–pin
connector in 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) or a short to voltage (i.e., a pulled pin on trailer
emergency break-away battery) or trailer brakes drawing too much
current.
2009 F-150
(f12)
Owners Guide
(own2002)
, 3rd Printing
USA
(fus)
Tires, Wheels and Loading
260