Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Celica 1988-1989.1993-1994.2000 Approved Toyota Celica 1993 STEERIN4
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STEERING COLUMN - STANDARD
1993 Toyota Celica
1993 STEERING
Toyota - Steering Columns - Standard
Celica
DESCRIPTION & OPERATION
Steering column is a collapsible 2-piece design. Columns use
shear pins to absorb collision impact. Steering shaft is connected
directly to steering gear with either a flexible coupling or "U"
joint. Car models have an air bag integral with the steering wheel
pad.
NOTE: For models with tilt wheel steering columns, see the
STEERING COLUMN - TILT article in the STEERING
section.
DISABLING & ACTIVATING AIR BAG SYSTEM
WARNING: Before any repairs are performed on air bag equipped models,
disconnect and shield negative battery cable. Wait at least
90 seconds after disconnecting battery cable before
performing any repairs. Air bag system retains enough voltage
to deploy air bag for a short time after disconnecting power.
Use caution when working around steering column. Air bag
could deploy.
To disable air bag system, ensure ignition switch is in LOCK
position and negative battery terminal is disconnected for at least 90
seconds before attempting any repair. DO NOT apply electrical power to
any component on steering column without disconnecting air bag control
unit. Information labels are attached to air bag components. Follow
all notices on labels.
ADJUSTMENTS
SPIRAL CABLE
On vehicles equipped with air bag system, spiral cable MUST
be correctly adjusted to ensure proper air bag operation. Ensure front
wheels are in straight-ahead position. Turn spiral cable
counterclockwise by hand until it becomes harder to turn cable. Turn
spiral cable clockwise about 2 1/2-3 turns and ensure Red marks align
and are visible through inspection hole. See Fig. 1.
Fig. 1: Adjusting Air Bag Spiral Cable
Courtesy of Toyota Motor Sales, U.S.A., Inc.
REMOVAL & INSTALLATION
STEERING WHEEL PAD & SPIRAL CABLE (WITH AIR BAG)
NOTE: See DISABLING & ACTIVATING AIR BAG SYSTEM.
Removal
1) Ensure front wheels are in straight-ahead position. Turn
ignition switch to LOCK position. Disconnect and shield negative
battery cable.
2) Remove screw covers, screws, and lower instrument cluster
trim panel(s). Loosen steering wheel pad Torx screws until groove
along screw circumference catches on screw case. See Fig. 2.
Fig. 2: Removing Steering Wheel Pad
Courtesy of Toyota Motor Sales, U.S.A., Inc.
3) Pull steering wheel pad from steering wheel and disconnect
electrical connector. Remove steering wheel pad. Place steering wheel
pad on flat surface with pad cover facing up.
WARNING: Place steering wheel pad assembly on workbench. Pad surface
MUST face up. If assembly is stored face down, accidental air
bag deployment could propel assembly and cause serious bodily
injury.
4) Mark steering wheel and steering shaft for installation
reference. Remove steering wheel nut. Use appropriate puller to remove
steering wheel. Remove 4 screws from upper and lower steering column
covers. Remove screws attaching spiral cable to combination
(headlight/turn signal/wiper) switch. Disconnect spiral cable and
remove from vehicle.
Installation
1) To install, reverse removal procedure. Before installing
spiral cable, ensure spiral cable is properly aligned. See ADJUSTMENTS
. Tighten steering wheel nut and Torx screws to specification. See
TORQUE SPECIFICATIONS.
2) After spiral cable and steering wheel pad are installed,
ensure proper operation of air bag system by turning ignition switch
to ACC or ON position. AIR BAG warning light should come on and go out
after approximately 6 seconds.
3) If AIR BAG warning light stays on for more than 6 seconds,
air bag system is malfunctioning and needs repair. If AIR BAG warning
light comes on with ignition on, a short circuit is likely in AIR BAG
warning light circuit.
COMBINATION SWITCH
Removal & Installation
1) Disconnect negative battery cable. Remove steering wheel.
See STEERING WHEEL PAD & SPIRAL CABLE or STEERING WHEEL & HORN PAD.
Remove instrument cluster lower trim panel. Remove upper and lower
steering column covers.
2) Disconnect combination switch electrical connector. Remove
screws securing combination switch to steering column and remove
combination switch. To install, reverse removal procedure. Tighten
steering wheel nut to specification. See TORQUE SPECIFICATIONS.
IGNITION SWITCH & LOCK CYLINDER
Removal
1) Disconnect negative battery cable. Remove steering wheel.
See STEERING WHEEL PAD & SPIRAL CABLE or STEERING WHEEL & HORN PAD.
Remove upper and lower steering column covers. Remove combination
switch (if necessary).
2) Disconnect ignition switch harness connectors. If shear
bolt studs are accessible, use a hacksaw to cut a slot into exposed
studs. Using a screwdriver, remove studs.
3) If shear bolt studs are recessed or hard to reach with a
hacksaw, center punch studs. Using a drill bit and a screw extractor,
remove studs. Remove ignition switch and lock cylinder.
Installation
1) To install, reverse removal procedure. Install NEW shear
bolts. Tighten shear bolts finger tight. Ensure proper operation of
ignition switch and lock cylinder.
2) Tighten shear bolts until heads break off. Install
combination switch, upper and lower steering column covers and
steering wheel. Tighten steering wheel nut to specification. See
TORQUE SPECIFICATIONS.
STEERING COLUMN
Removal & Installation
1) Disconnect negative battery cable. Remove steering wheel
pad. Mark steering shaft and steering wheel for installation
reference. Remove steering wheel. See
STEERING WHEEL PAD & SPIRAL CABLE or STEERING WHEEL & HORN PAD.
2) Remove instrument cluster lower trim panel. Remove air
duct from under steering column (if equipped). Remove steering column
upper and lower covers. Remove combination switch.
3) On passenger cars, mark "U" joint and steering shaft for
installation reference. Remove bolt(s) and disconnect "U" joint from
bottom of steering column shaft. Remove bolts securing steering
column.
OVERHAUL
NOTE: See DISABLING & ACTIVATING AIR BAG SYSTEM.
Disassembly
1) Drill out tapered head bolts and use screw extractor to
remove upper bracket bolts. Remove upper bracket from column tube.
Remove upper snap ring. Remove steering column main shaft from column
tube. See Fig. 3.
2) Remove lower snap ring. Remove collar from main shaft. Use
a screwdriver to remove bushing. Place ignition key lock in ACC
position. Push down on stop pin and pull out key cylinder.
Fig. 3: Exploded View Of Steering Column
Courtesy of Toyota Motor Sales, U.S.A., Inc.
Inspection
Ensure lock mechanism operates properly. Check upper bracket
for damage and upper bearing for rotating smoothness. Check steering
shafts for bending, damaged splines, or damaged "U" joints. Check
column tube for bending or other damage. Repair or replace components
as necessary.
Reassembly
To reassemble, reverse disassembly procedure. Apply
molybdenum disulfide base grease to thrust stopper and upper bushing.
Align bushing tabs with holes of column tube. Install upper bracket
with tapered head bolts. Tighten bolts until hexagonal heads break
off.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS TABLE
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