Ford 2008 F-550 v.2 Manuel d'utilisateur télécharger pdf (Page 226)

TBC determines a malfunction in the trailer connection, TBC system, or

in the trailer. These messages are listed below:

TRAILER DISCONNECTED (if equipped with message center) or

CHECK TRAILER (if equipped with mini message center): 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.

TBC 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 TRAILER

FAULT 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., pulled pin on trailer emergency break-away battery) or

trailer brakes drawing too much current.

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.

Points to Remember:

• Remember to adjust gain setting before using the TBC for the first

time.

• Readjust GAIN setting on the TBC (according to procedure above)

whenever road, weather and trailer or vehicle loading conditions

change from those that existed when the gain was initially set.

• The sliding lever on the TBC should be used only for manual

activation of trailer brakes to assist with proper adjustment of the

GAIN. Misuse, such as application during trailer sway, could cause

instability of trailer and/or tow vehicle.

2008 F-250/350/450/550 (f23)

Owners Guide (post-2002-fmt)

USA (fus)

Tires, Wheels and Loading

226

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Ford 2008 F-550 v.2 Manuel d'utilisateur Page 226

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