Ford 2005 F-550 v.2 Manuel d'utilisateur télécharger pdf (Page 173)

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 lock-up (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 lock-up. 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 (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. 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 Ford dealership for diagnosis and repair. The TBC may still

function, but performance may be degraded.

TRAILER FAULT: The TBC is capable of determining certain faults in

the vehicle wiring and trailer wiring/brake system. 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.

• Trailer brake overload: The trailer brakes are drawing too much

current; consult your trailer dealer for assistance.

Note: Your TBC can be diagnosed by your authorized Ford dealership 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.

2005 F250/350/450/550 (f23)

Owners Guide (post-2002-fmt)

USA_English (fus)

Tires, Wheels and Loading

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Ford 2005 F-550 v.2 Manuel d'utilisateur Page 173

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