Intella-Stop ULTRA Guia De Instalacion página 2

Boost Setting
The boost button was designed to allow a more aggressive
setting for your trailer brakes and is available in three levels
- [ b .I ], [ b .2 ], [ b .3 ]. Each incremental boost setting
increases the sensitivity of the INTELLA-STOP ™ ULTRA's
inertial sensor, enhancing the paticipation of the trailer
brakes during a braking event.
The first press on the boost button displays the current
setting. Boost is advanced to the next level by continuing
to press the boost button.
Five seconds after setting the boost level, the display
will show
Boost On
indicating Boost On by the right most decimal.
For example: With the boost off, [ .c ], during a braking
event, the power to the brakes starts out at zero and
increases with deceleration. With the boost on level 1,
Ty p i c a l B o o s t S e t t i n g s F o r O p t i m a l P e r f o r m a n c e
(with properly adjusted trailer brakes*)
TRAILER WEIGHT compared to VEHICLE WEIGHT
Trailer weighs LESS than Vehicle
Trailer weighs APPROXIMATELY SAME as Vehicle
Trailer weighs UP TO 25% MORE than Vehicle
Trailer weighs UP TO 40% MORE than Vehicle
Trailer weighs OVER 40% MORE than Vehicle
* Increased Boost setting may be needed if trailer brakes are worn, see Appendix A or a dealer for brake adjustment or repair.
NOTE:
1. Always warm the trailer's brakes before setting
the power. Warm trailer brakes tend to be more
responsive than cold brakes. To warm trailer brakes,
drive a short distance (1/4 mile) at 45 MPH with
manual lever engaged enough to cause trailer
braking at a low level.
2. WARNING The power should never be set high
enough to cause trailer brakes to lock up. Skidding
trailer wheels can cause loss of directional stability
of trailer and tow vehicle.
(Boost Setting continued)
[ b .I ], during a braking event, the power automatically
starts out at approximately 13% of the power setting and
increases with deceleration. With the boost on level 2,
[ b .2 ], or with the boost on level 3, [ b .3 ], during a
braking event, the power automatically starts out at
approximately 25% of the power setting and increases
with deceleration.
Some cases where you might want to use the boost button:
• You like the trailer braking to 'LEAD' the
tow vehicle's braking
• Towing a full vs. empty trailer
• Degraded brake performance (most electric brakes
require manual adjustment - see Appendix A or a
dealer for adjustment or repair)
NOTE:
Boost not intended to be used to take place
of trailer brake adjustment or repair.
See the chart below for recommended "Boost" settings
(indicated with X) for typical Trailer to Vehicle
weight relationships.
Select your boost setting based on your towing situation,
driving preference and condition of your trailer brakes.
➮
BOOST "OFF" INCREASING BOOST LEVEL
X X
X X X
X X
X
WARNING
Do not exceed Gross
Combined Weight Rating (GCWR)
3. The power may need to be adjusted for different load
weights and road conditions.
4. Not all trailer brakes will lock up due to various
conditions. However, inability to lock up the brakes
generally indicates the need for an inspection to
determine the cause.
5. When the power is set correctly you should feel
unified braking between the trailer and tow vehicle.
6. WARNING Boost setting will be cleared under
abnormally low battery conditions. Check boost
setting after starting vehicle.
Reverse
When backing a trailer you can cancel "BOOST" and
"HOLD" for a period of three minutes. This can be
accomplished by pressing the boost button continuously
for five seconds with the brake pedal depressed.
The display will indicate:
Troubleshooting Chart
Display Situation
Flashes 2 times a second or a
steady display.
Flashes 2 times per second.
Flashes 2 times per second.
The lower two bars flash
The upper two bars flash
➮
Flashes for 15 seconds
No display with manual or pedal
activation.
(Blank
Display)
No display until activation
No braking
X
Power interruption while brake
pedal is depressed.
X
Appendix A: Trailer Brake Adjustment**
Brakes should be adjusted after the first 200 miles of
operation when the brake shoes and drums have "seated" and
X
at 3000 mile intervals, or as use and performance requires. The
brakes should be adjusted in the following manner:
1. Jack up trailer and secure on adequate capacity jack
stands. Follow trailer manufacturers recommendations for
lifting and supporting the unit. Check that the wheel and
drum rotate freely.
WARNING Do not lift or support trailer on any part
of the axle or the suspension system.
2. Remove the adjusting hole cover from the adjusting slot
on the bottom of the brake backing plate.
3. With a screwdriver or standard adjusting tool, rotate the
starwheel of the adjuster assembly to expand the brake
shoes. Adjust the brake shoes out until the pressure of
the linings against the drum makes the wheel very
difficult to turn.
(Reverse continued)
(If "boost" was active, the right hand decimal point
will also be on.) After three minutes the "BOOST"
and "HOLD" features will automatically return to
your previous settings.
NOTE:
Returning to your previous settings prior to three min-
utes can be accomplished by pressing the boost button.
Probable Cause
Trailer is connected and INTELLA-STOP™ ULTRA loses
connection to battery ground.
INTELLA-STOP™ ULTRA "sees" an overload condition
during operation.
1. Brake wire sees short during idle condition.
2. Use of some test lights or non-Tekonsha testers
can cause this problem.
INTELLA-STOP™ ULTRA is mounted at too low an angle.
INTELLA-STOP™ ULTRA is mounted at too high an angle.
1. Trailer not connected to tow vehicle.
2. Trailer connected with open circuit on brake line.
3. Trailer connector disconnected or corroded.
4. Loss of trailer brake magnet ground.
1. Loss of power to INTELLA-STOP™ ULTRA.
2. Loss of ground to INTELLA-STOP™ ULTRA.
INTELLA-STOP™ ULTRA is in power-saving mode due
to no motion for fifteen minutes.
Power control set to 0.
Note: With drop spindle axles, a modified adjusting tool with
about an 80 degree angle should be used.
4. Then rotate the starwheel in the opposite direction until
the wheel turns freely with a slight lining drag.
5. Replace the adjusting hole cover and lower the wheel
to the ground.
6. Repeat the above procedure on all brakes.
WARNING Never crawl under your trailer unless it is
resting on properly placed jack stands.
Follow the trailer manufacturers recommendations for lifting
and supporting the unit. Do not lift or place supports on any
part of the suspension system.
**Note: Trailer Brake Adjustment procedures courtesy Dexter Axle.