2000 FORD F750 ECU

Check trans (Allison automatic transmission)
The lamp will illuminate for several
seconds after the ignition is turned
to the ON position. Illumination of
this light indicates that a problem
has been detected and shifting may
be restricted. Depending upon the
severity of the problem, the
read-out digit on the shifter display
may be blank. Operation may
continue in order or reach service assistance. The ECU may not respond
to shift selector requests, since operating limitations are being placed on
the transmission, i.e. upshifts and downshifts may be restricted.
Direction changes will not occur.
Refer to theMaintenance and Carechapter.
Safety belt
Momentarily illuminates when the
ignition is turned to the ON position
to remind you to fasten your safety
belts. For more information, refer to
theSeating and safety restraints
chapter.
Service engine soon
TheService Engine Soonindicator
light illuminates when the ignition is
first turned to the ON position to
check the bulb. If it comes on after
the engine is started, one of the
engine’s control systems may be
malfunctioning. The light may illuminate without a driveability concern
being noted. The vehicle will usually be drivable and will not require
towing.
Temporary malfunctions may cause yourService Engine Soonlight to
illuminate. Examples are:
1. The vehicle has run out of fuel. (The engine may misfire or run
poorly.)
2. Poor fuel quality or water in the fuel.
CHECK
TRANS
SERVICE
ENGINE
SOON
Instrumentation
14

3. Locate the strap below the
seatback.
4. Pull downward on the strap to
release the seatback.
5. Rotate the seatback forward.
Returning the seat to upright
Always latch the vehicle seat to the floor, whether the seat is
occupied or empty. If not latched, the seat may cause injury
during a sudden stop.
1. Lift/rotate the seatback toward the rear of the vehicle and make sure
it latches securely.
2. Lift/rotate the lower seat cushion to its seating position.
SAFETY RESTRAINTS
Safety restraints precautions
Always drive and ride with your seatback upright and the lap
belt snug and low across the hips.
To reduce the risk of injury, make sure children sit where they
can be properly restrained.
Never let a passenger hold a child on his or her lap while the
vehicle is moving. The passenger cannot protect the child from
injury in a collision.
Seating and safety restraints
61

All occupants of the vehicle, including the driver, should always
properly wear their safety belts, even when an air bag SRS is
provided.
It is extremely dangerous to ride in a cargo area, inside or
outside of a vehicle. In a collision, people riding in these areas
are more likely to be seriously injured or killed. Do not allow people to
ride in any area of your vehicle that is not equipped with seats and
safety belts. Be sure everyone in your vehicle is in a seat and using a
safety belt properly.
In a rollover crash, an unbelted person is significantly more likely
to die than a person wearing a seat belt.
Each seating position in your vehicle has a specific safety belt
assembly which is made up of one buckle and one tongue that
are designed to be used as a pair. 1) Use the shoulder belt on the
outside shoulder only. Never wear the shoulder belt under the arm.
2) Never swing the safety belt around your neck over the inside
shoulder. 3) Never use a single belt for more than one person.
Always transport children 12 years old and under in the back
seat and always properly use appropriate child restraints.
Combination lap and shoulder belts
1. Insert the belt tongue into the
proper buckle (the buckle closest to
the direction the tongue is coming
from) until you hear a snap and feel
it latch. Make sure the tongue is
securely fastened in the buckle.
Seating and safety restraints
62

Child and infant or child safety seats
Use a safety seat that is recommended for the size and weight of the
child. Carefully follow all of the manufacturer’s instructions with the
safety seat you put in your vehicle. If you do not install and use the
safety seat properly, the child may be injured in a sudden stop or
collision.
When installing a child safety seat:
•Use the correct safety belt buckle
for that seating position.
•Insert the belt tongue into the
proper buckle until you hear a
snap and feel it latch. Make sure
the tongue is securely fastened in
the buckle.
•Keep the buckle release button
pointing up and away from the
safety seat, with the tongue
between the child seat and the release button, to prevent accidental
unbuckling.
•Place seat back in upright position.
Ford recommends the use of a child safety seat having a top tether
strap. Install the child safety seat in a seating position which is capable
of providing a tether anchorage. For more information on top tether
straps, refer toAttaching safety seats with tether straps.
Carefully follow all of the manufacturer’s instructions included
with the safety seat you put in your vehicle. If you do not install
and use the safety seat properly, the child may be injured in a sudden
stop or collision.
Seating and safety restraints
73

3. Buckle the seat belt. Push down
on the childseat and pull on the
shoulder portion of the belt to snug
the lap belt. Hold the lap and
shoulder belts next to the tongue
and unbuckle the belt.
4. Install a locking clip over both lap
and shoulder belt portions next to
the sliding tongue. Rebuckle the
belt. Obtain the locking clip kit
(Part Number FO3Z-5461248–A) at
no charge from an authorized Ford
or Lincoln-Mercury dealer.
5. Before placing the child in the seat, forcibly tilt the seat forward and
back to make sure the seat is securely held in place. If the child seat is
not tight enough, unbuckle the seat belt, move the tongue and locking
clip to shorten the lap portion and push down hard on the childseat
while you rebuckle the belt.
Check to make sure the child seat is properly secured before each use.
Attaching safety seats with tether straps
Some manufacturers make safety seats that include a tether strap that
goes over the back of the vehicle seat and attaches to an anchoring
point. Other manufacturers offer the tether strap as an accessory.
Contact the manufacturer of your child safety seat for information about
ordering a tether strap.
Seating and safety restraints
75

Tether anchorage hardware
A tethered seat can be installed in the front seat. Put the tether strap
over the seatback and attach it to an anchor bracket.
An anchor bracket can be installed to the inside of the back panel of
your vehicle.
The anchor bracket must be installed using the instructions provided
with the tether anchorage hardware kit.
Tether anchorage hardware kits (part number 613D74) including
instructions, may be obtained at no charge from any Ford or
Lincoln/Mercury dealer.
If you have a Super Cab or Crew Cab, Ford recommends you attach
tether safety seats in the rear seating position (if possible) with the
tether strap attached to the tether anchorage bracket as shown in the
instructions provided with the tether anchor kit.
Tighten the anchor according to specifications. Otherwise, the
safety seat may not be properly secured and the child may be
injured in a sudden stop or collision.
Seating and safety restraints
76

Block the wheels to prevent the vehicle from moving.
Unexpected and possibly sudden vehicle movement may occur if
these precautions are not taken.
Impact wrenches should not be used as they may damage the piston and
prevent proper caging of the spring. Do not apply more than 68 Nm (50
lb-ft) torque to the release bolt nut.
1. Remove the stud tool and nut
from the carrying pocket on the
brake chamber assembly.
2. Remove the access plug from the
end of the spring chamber.
3. Insert the release stud through
the opening in the chamber and into
the spring pressure plate.
4. Turn the release stud one-quarter
turn to engage the stud tangs with
the slot in the pressure plate. Keep
the stud engaged and install the nut
on the release stud.
5. Tighten the nut until the spring is
fully caged and the brakes are
released. Do not loosen or remove
the release stud and nut unless the brake chamber is completely
assembled and is securely clamped.
6. When the air pressure is restored, unscrew and remove the release
stud and install in the carrying pocket. Install the access plug.
Driving
92

4 and 2 (Fourth and Second)
Use these ranges when road, load or traffic conditions require a lower
gear. These ranges provide greater engine braking than D (Drive). When
conditions are improved that no longer require these lower gears, shift
back to D (Drive).
1 (First)
The transmission has to be manually shifted into 1 (First) and will not
shift into a higher gear. Use this position when pulling through mud or
snow, driving up steep grades, hauling extra heavy loads or where
maximum reduction is required.
Allison 2400 series
This transmission provides four ranges and one reverse range.
P (Park)
Use this position when you start the engine. The engine is designed to
start in the P (Park) or N (Neutral) position only.
Always come to a complete stop before shifting into P (Park). Make sure
the gearshift is securely latched in P (Park). This position locks the
transmission and prevents the rear wheels from turning.
Always set the parking brake fully and make sure the gearshift
lever is latched in P (Park). Turn off the ignition whenever you
leave your vehicle.
When parking on hilly or off-road terrains, be sure to set the parking
brake fully and chock the wheels to prevent unexpected and possibly
sudden vehicle movement.
R (Reverse)
Use this position to move the vehicle backwards. Completely stop the
vehicle before shifting from a forward gear (1, 2, 4 or D) to R (Reverse),
or from R (Reverse) to any forward gear. The reverse warning signal will
sound when the selector is in R (Reverse). Reverse has only one gear
and provides the greatest gear reduction.
Driving
108