FORD 2005 F-550 v.1 - Manual (Page 170)

• If the electrical connection is lost, the indicator will flash red. If the
connection is lost while the vehicle is stationary, the indicator will turn
off after 30 seconds. If the connection is lost while the vehicle is
moving, the indicator will flash until the ignition is turned off, then on
again.
• If no electrical connection is detected after the ignition is turned on,
pressing a GAIN adjustment button will display the GAIN setting.
Sliding the manual control will display the GAIN setting, OUTPUT bar
graph and light the trailer indicator red.
3. GAIN setting display: Shows the current GAIN setting. This will
illuminate when a trailer is connected, flash if the trailer becomes
disconnected, or remain off if no trailer is connected.
4. OUTPUT bar graph: When the vehicle’s brake pedal is pushed, or
when the manual control is activated, green bar indicators will illuminate
to indicate the amount of power going to the trailer brakes relative to
the brake pedal or manual control input.
5. Manual control lever: Slide the control lever to the left to activate
power to the trailer’s electric brakes independent of the tow vehicle’s
brakes. If the manual control is activated while the brake is also applied
the greater of the two inputs determines the power sent to the trailer
brakes.
• Stop Lamps: Both the tow vehicle and the trailer brake lamps will be
illuminated in the event of a manual apply using the TBC manual
control lever, as well as with any activation of the vehicle brake pedal.
GAIN
The GAIN setting is used to set the TBC for the specific towing
condition and should be changed as towing conditions change. Changes
to towing conditions include trailer load, vehicle load, road conditions
and weather.
The GAIN should be set to provide the maximum trailer braking
assistance while ensuring the trailer wheels do not lock when braking.
Locked trailer wheels may lead to trailer instability.
Procedure for adjusting GAIN:
Note: This should only be performed in a traffic free environment.
1. Make sure the trailer brakes are in good working condition and
properly adjusted; see your trailer dealer, if necessary.
2. Hook-up the trailer and make the electrical connections according to
the trailer manufacturer’s instructions.
REVIEW COPY
2005 F250/350/450/550 (f23), Owners Guide (post-2002-fmt) (own2002),
Market: USA_English (fus)
Tires, Wheels and Loading
170