1996 FORD F250 sensor

25 %
*
[SR11800(BEF )01/95]
How the Air Bag Supplemental Restraint
System Operates
*
[SR11900(BEF )10/94]
The air bag supplemental restraint system has
two main parts. One part is the air bag system
with the driver air bag and inflator located in
the center of the steering wheel. The second part
is the electrical system, which has impact
sensors, and a diagnostic module, and backup
power supply. The diagnostic module monitors
its own internal circuits and the supplemental air
bag electrical system readiness, including the
impact sensors, the system wiring, the air bag
system readiness light, air bag power, and the
air bag ignitor.
*
[SR12050(B F )03/93]
half page art:0021011-A
The location of the air bag and warning label
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Update:Thu May 9 15:26:26 1996
ProCarManuals.com

27 [SR12700(BEF )04/95]
The air bag system is designed to stay out of
sight until it is activated. The air bag system is
designed to deploy in frontal and front-angled
collisions more severe than hitting a parked
vehicle of similar size and weight head-on at
about 28 mph (45 km/h). Because the system
senses the crash severity rather than vehicle
speed,somefrontal collisions at speeds above
28 mph (45 km/h) will not inflate the air bag.
The system activates when the sensors detect a
forward deceleration equal to or greater than the
deceleration experienced if you would drive
your vehicle into a solid wall at 14 mph. In
some side impacts, the forward deceleration of
your vehicle can be great enough to deploy your
air bag.
*
[SR12720(BEF )03/95]
The following four steps show how the air bag
system works:
*
[SR12740(BEF )03/95]
1. Sensors in the vehicle will detect the degree
of severity of a frontal impact. When the
sensor system is activated, electric current
flows to the inflator and the system ignites
the gas generant.
*
[SR12760(BEF )03/95]
2. The propellant then rapidly burns in the
metal container. The rapid burning produces
nitrogen gas and small amounts of dust. The
nitrogen gas and dust are cooled and filtered
during inflation of the air bag.
*
[SR12780(BEF )03/95]
3. The inflating supplemental air bag splits
open the trim cover. The supplemental air
bag then rapidly unfolds and inflates in front
of the driver.
*
[SR12801(BEF )03/95]
NOTE: STEPS 1-3 TAKE PLACE IN A
FRACTION OF A SECOND.
File:ltsrf.ex
Update:Thu May 9 15:26:26 1996
ProCarManuals.com

76
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[LG12350(B F )03/93]
quarter page art:0020535-D
Engine coolant temperature gauge
*
[LG12601( ALL)01/95]
Speedometer
*
[LG12700( ALL)01/95]
The speedometer tells you how many miles
(kilometers) per hour your vehicle is moving.
*
[LG12750(BEF )04/95]
Your vehicle contains a speedometer which
receives its input from the Anti-Lock brake
sensor. The speedometer is also used to provide
a speed signal for correct operation of the
vehicle's Powertrain Control Module (PCM),
electronic transmission, and speed control (if so
equipped). Because of this, it is very
IMPORTANT to change the speedometer's
internal conversion constant if the size of the
tires on the vehicle is changed. Changing the
conversion constant to the proper value when
the tires are changed will also ensure that the
speedometer retains the original factory-set
accuracy. NOTE: The conversion constant can
only be changedsix timesonce the vehicle
leaves the factory. Your Ford dealership service
personnel can change the conversion constant.
*
[LG12753(BEF )01/95]
Some vehicles are equipped with a vehicle speed
(MPH/km/h) limiting device that is contained
within the Powertrain Control Module (PCM).
The purpose of this device is to maintain peak
vehicle speed below a specified limit. (Vehicle
speed limits may vary based on engine
displacement).
File:ltlgf.ex
Update:Thu May 9 15:22:28 1996
ProCarManuals.com

131 %
*
[FV50700(B F )01/95]
Automatic Dimming Inside Rearview
Mirror (If equipped)
*
[FV50850(B F )03/93]
half page art:0021008-A
Automatic dimming inside rearview mirror
*
[FV50900(B F )03/93]
This mirror is equipped with an electrochromic
glare control feature that automatically darkens
the mirror, reducing glare from the headlamps
of vehicles behind you. A forward facing light
sensor measures the ambient light just as your
eyes do. When the rear facing light sensor in the
glass senses glare, such as from following
headlights, it energizes a chemical layer in the
glass causing it to darken and absorb light. As
the glare subsides, the mirror glass returns to its
normal clear state.
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Update:Thu May 9 15:20:08 1996
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132
*
[FV51050(B F )03/94]
To turn the mirror on, push the On/Off switch,
located on the bottom of the mirror, to latch it
in the ON position. The button will be latched in
the up position and at night a low intensity
green light will be visible from the button when
the mirror is turned on. To turn the mirror off,
push the On/Off switch again and the button
will unlatch shutting off the light and the mirror
will be off.
*
[FV51100(B F )03/93]
DemonstrationÐ The mirror's operation may
be demonstrated by simulating glare as follows:
*
[FV51200(B F )03/94]
1. Cover the forward facing sensor, located on
the right side of the mirror back, with a
dark (preferably black) cloth. Hold the dark
cloth over the sensor until you notice the
mirror glass start to darken to the non-glare
state. If the surrounding lighting conditions
are too dark it may be necessary to shine
additional lighting, such as from a flashlight,
on the rearward sensor located on the glass
face.
*
[FV51400(B F )03/93]
2. Remove the cloth (and shut off the flashlight
if applicable) and the glass will return to the
clear reflective stage.
*
[FV51500(B F )01/95]
One important safety feature is that the mirror
automatically returns to the normal position
whenever the vehicle is placed in R (Reverse)
(when the mirror is in the ON position). This
feature ensures a bright clear view in the mirror
when backing up.
File:ltfvf.ex
Update:Thu May 9 15:20:08 1996
ProCarManuals.com

173
*
[DR02650( F )05/95]
RWARNING
Do not leave the vehicle unattended with
the transfer case in the N (Neutral)
position. Always set the parking brake
fully and turn off the ignition when
leaving the vehicle.
*
[DR02900( EF )06/94]
Forced Downshifts
*
[DR03000( EF )06/92]
To gain added acceleration in D (Drive) (when
passing another vehicle) push the accelerator to
the floor. The transmission will downshift to
Second gear at speeds from about 35 to 55 mph
(56 to 88 km/h) or to either First or Second gear
at speeds under 35 mph (56 km/h).
*
[DR03040( EF )03/94]
Power Braking
*
[DR03075( EF )03/93]
Increasing the engine speed above idle without
vehicle movement (such as holding the brake) in
a forward or reverse gear causes transmission
stall.Continued operation in the stall condition
can result in transmission overheat, malfunction
or fluid expulsion.
*
[DR08650(BEF )03/93]
Automatic Transmission
Operation (E4OD and 4R70W)
*
[DR08710(BEF )03/94]
The E4OD and 4R70W transmissions are
electronically controlled four speed automatic
transmissions with overdrive. Transmission
operation is controlled by the Powertrain Control
Module (PCM).
*
[DR08720( ALL)08/94]
The PCM will automatically adjust transmission
operation to make up for varying conditions.
Several sensors located on the engine and
transmission such as Throttle Position, Engine
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Update:Thu May 9 15:17:55 1996
ProCarManuals.com

189
*
[DR16310(B F )01/95]
Four-wheel drive operation (4H or 4L) on dry
pavement is not recommended. Operating the
vehicle in four-wheel drive on dry pavement
will increase tire wear, decrease fuel economy,
and make four-wheel drive disengagement
difficult for the transfer case.
*
[DR16340( F )06/93]
NOTE: All transfer cases on F-350 4x4 trucks
are equipped with an opening for a
power take-off (PTO). If this opening
is used for a transfer case mounted
PTO, additional transfer case lubricant
is required. Refer to the Refill
Capacities section for lubricant fill
requirements. Vehicles equipped with
an E4OD automatic transmission and a
7.3L diesel engine will require exhaust
modification for PTO clearance. For
vehicles equipped with an E4OD
automatic transmission: If a transfer
case mounted PTO is operated with the
transfer case shift lever in neutral, a
Vehicle Speed Sensor Self-test error
may be set in the Powertrain Control
Module (PCM) causing the
transmission to function abnormally,
and the Transmission Control Indicator
Light (TCIL) may flash on and off
repeatedly. Normal transmission
function should return when the
transfer case has been engaged and the
vehicle is driven. If the TCIL continues
to flash or the transmission continues
to operate abnormally contact your
Ford dealer as soon as possible.
File:ltdrf.ex
Update:Thu May 9 15:17:55 1996
ProCarManuals.com

202
*
[DR21900(BEF )10/94]
Rear Drum Brakes
*
[DR22000(BEF )03/95]
The rear drum brakes are self-adjusting.
Automatic adjustment occurs when the brakes
are applied while ªbacking up.º If normal
operation does not include much backing, adjust
the brakes when they seem ªlow,º using the
procedure underIf Brakes Do Not Grip Well or
Pedal is Lowin this chapter.
*
[DR22025( F )03/91]
Rear Disc Brakes (F-Super Duty and
F-Series Stripped Chassis Only)
*
[DR22050( EFM)04/95]
The rear disc brakes are self-adjusting. They do
not require service other than periodic
lubrication of the caliper slide rails and
inspection for pad wear.
*
[DR22100( ALL)11/89]
Hydraulic Power Brakes
*
[DR22200(BEF )08/94]
The hydraulic brake system is made up of two
independent hydraulic circuits. One hydraulic
circuit supplies fluid to the front disc brakes and
the other hydraulic circuit supplies fluid to the
rear drum brakes. These two circuits are
supplied by a common hydraulic brake fluid
reservoir, with a fluid level sensor.
*
[DR22300( ALL)11/89]
The brake light in the instrument cluster will
light for low brake fluid in the common brake
fluid reservoir.
*
[DR22400( ALL)05/95]
RWARNING
An increase in pedal travel will result in
reduced braking capability. The brake
system should be checked immediately.
File:ltdrf.ex
Update:Thu May 9 15:17:55 1996
ProCarManuals.com