sensor FORD E SERIES 1996 4.G Owners Manual

31
*
[SR11800(BEF )01/95]
How the Air Bag Supplemental Restraint
System Operates
*
[SR11900(BEF )05/95]
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.
[SR12100( E )05/91]
half page art:0020843-B
The location of the air bag and warning label
File:03ltsre.ex
Update:Wed Apr 17 08:51:22 1996

33 [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.
*
[SR12820(BEF )03/95]
4. After inflation, the gas empties through holes
in the air bag. The air bag deflates at once.
File:03ltsre.ex
Update:Wed Apr 17 08:51:22 1996

79
*
[LG11901( ALL)04/95]
4. Check the coolant level following the
instructions on checking and adding coolant
to your engine, seeEngine Coolantin the
Index. If you do not follow these
instructions, you or others could be injured.
*
[LG12200( ALL)03/95]
For instructions on checking and adding coolant
to your engine, seeEngine coolantin the Index. If
you do not follow these instructions, you or
others could be injured.
[LG12375( E M)03/93]
quarter page art:0020687-C
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.
File:05ltlge.ex
Update:Wed Apr 17 08:49:15 1996

199
*
[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
Speed, Vehicle Speed and Transmission
Temperature are used by the PCM to shift the
transmission into a higher or lower gear when
required for the best performance and fuel
economy. For example, you may notice that the
transmission will upshift to a higher gear more
quickly when the vehicle is first driven and has
not reached normal operating temperature.
File:10ltdre.ex
Update:Wed Apr 17 08:44:07 1996

207
*
[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.
[DR22010( E )04/95]
Rear Disc Brakes (Econoline Super Duty
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:10ltdre.ex
Update:Wed Apr 17 08:44:07 1996