Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Celica 1988-1989.1993-1994.2000 Approved Toyota Celica 1993 STEERIN3
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STEERING COLUMN - TILT
1993 Toyota Celica
1993 STEERING
Toyota - Steering Columns - Tilt Wheel
Celica
DESCRIPTION & OPERATION
Tilt steering wheels incorporate an upper steering shaft,
attached by a "U" joint to an intermediate steering shaft. These
shafts are held in place by upper and lower brackets. Brackets are
pinned together so upper bracket can move up or down. Upper bracket is
locked in place by pawl attached to lever. Steering columns are
collapsible.
Celica All-Trac models use an automatic tilt steering column.
See STEERING COLUMN - AUTOMATIC TILT WHEEL article in this section for
trouble-shooting and diagnosis.
DISABLING & ACTIVATING AIR BAG SYSTEM
WARNING: All models are equipped with a driver-side air bag; use
extreme caution while servicing steering column. Air bag
system retains enough voltage to deploy air bag for a short
time after disconnecting power. Proceeding too quickly may
cause accidental deployment and possible personal injury.
Always wait at least 90 seconds after disconnecting battery
before starting work.
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
Make sure front wheels are in a straight-ahead position. Turn
spiral cable COUNTERCLOCKWISE by hand until it becomes hard to turn
cable. Turn spiral cable CLOCKWISE 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
NOTE: See DISABLING & ACTIVATING AIR BAG SYSTEM.
Removal
1) Make sure front wheels are in a straight-ahead position.
Turn ignition off. Disconnect negative battery cable.
2) Remove engine hood release lever. 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
air bag. Remove steering wheel pad assembly. Place steering wheel pad
assembly on a flat surface with pad cover facing upward.
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) Place a mark on steering wheel and main shaft for
installation reference. Using steering wheel puller, remove steering
wheel. Remove 4 screws from upper and lower steering column covers.
Remove spiral cable-to-combination (headlight/turn signal/wiper)
switch screws. 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
SPIRAL CABLE under ADJUSTMENTS.
2) After steering wheel pad and spiral cable 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 about 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 off, a short circuit may be present in
AIR BAG warning light circuit.
COMBINATION SWITCH
Removal & Installation
1) Remove steering wheel. See
STEERING WHEEL PAD & SPIRAL CABLE or STEERING WHEEL & HORN PAD under
REMOVAL & INSTALLATION. Remove instrument panel lower finish panel.
Remove upper and lower steering column covers. Locate and disconnect
combination switch electrical connector(s).
2) On models equipped with cruise control switches on
steering wheel, disconnect cruise control electrical connector(s) from
slip ring. Remove slip ring from combination switch.
3) On all models, remove wire ties securing combination
switch wiring harness to column. Remove screws securing combination
switch to steering column. Remove combination switch. To install,
reverse removal procedure.
IGNITION SWITCH
Removal
1) Remove steering wheel and combination switch (if
necessary). See STEERING WHEEL PAD & SPIRAL CABLE and/or COMBINATION
SWITCH under REMOVAL & INSTALLATION. Disconnect ignition switch
harness connectors. If shear bolt studs are accessible, use a hacksaw
to cut a slot into exposed studs.
2) Remove studs using a screwdriver. If shear bolt studs are
recessed or hard to reach with a hacksaw, use a center punch on studs.
Using drill bit and screw extractor, remove studs. Place key in ACC
position and remove steering lock and ignition switch.
Installation
To install, reverse removal procedure. Install new shear
bolts. Tighten shear bolts finger tight. Ensure proper operation of
steering lock and ignition switch. Tighten shear bolts until heads
break off. Install combination switch, upper and lower steering column
covers and steering wheel (if removed).
STEERING COLUMN
Removal & Installation
1) Disconnect negative battery cable. Wait for at least 90
seconds before starting work to prevent air bag deployment. Remove
steering wheel pad. Mark steering shaft and wheel for installation
reference. Remove steering wheel.
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 (headlight/turn
signal/wiper) switch.
3) Mark "U" joint and shaft for installation reference.
Remove bolt(s) and disconnect "U" joint from bottom of steering column
shaft. Remove steering column bolts and steering column. To install,
reverse removal procedure.
OVERHAUL
STEERING COLUMN
NOTE: See DISABLING & ACTIVATING AIR BAG SYSTEM.
Disassembly
1) Drill out shear bolt studs. Using a screw extractor,
remove column bracket bolts. Remove upper (key cylinder) bracket. See
Figs. 4 and 5. Remove compression spring bolt. Remove compression
spring.
2) Remove bushings from compression spring. Remove 3 tension
springs. On all models except Celica All-Trac, remove 2 tilt lever "E"
rings from tilt lever lock shaft. Remove tilt lever spacer. Remove 2
nuts from tilt steering bolts. Remove 2 tilt lever retainers and 2
pawl stoppers.
3) Remove tilt pawl nut and washers. Pull out tilt pawl bolt.
Remove tilt lever assembly installation bolt. Remove 2 tilt pawls.
Remove tilt lever, tilt sub lever and tilt lever assembly from tilt
lever lock shaft.
4) On Celica All-Trac, remove tilt steering gear with motor.
Remove E-ring and collar. Remove nut and 2 washers and remove tilt
memory lever, torsion spring and spacer. Remove 3 nuts and 2 washers,
and remove spacer, torsion spring, 2 memory plates and 2 collars.
Remove 4 nuts and 3 washers and remove tilt release lever and lever
retainer.
5) Remove E-rings, bolt, 2 tilt lever retainers and tilt
steering stopper. Remove tilt lever and tilt sub lever from retainer.
Remove spacer and pawl stoppers. Remove tilt lever bracket and tilt
pawls. Remove tilt lever, tilt sub lever and release lever. Pull out
tilt lever lock shaft.
6) On all models, install nut (10 mm x 1.25 mm), washer (36-
mm outside diameter), and bolt (10 mm x 1.25 mm x 50 mm) to upper
column tube tilt steering bolt. Using a slide hammer, remove steering
column tube tilt bolts. Remove upper column tube from lower column
tube. See Fig. 3. Remove collar from main shaft.
7) Using a press, compress spring on main shaft. Remove snap
ring. Remove main shaft from column tube. Remove spring, thrust collar
and bearing. On Celica All-Trac, remove nut and collar and using a hex
wrench, remove tilt memory bolt and square nut.
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
1) Reassemble in reverse order of disassembly procedure.
Apply molybdenum disulfide lithium base grease to tilt lever assembly,
lock bolt, main shaft, and steering bolt pivot points. Install
steering column tube tilt bolts.
2) If upper column tube mark is "1", install hollow tipped
thread bolt. If upper column tube mark is "2", install plain thread
bolt. With tilt pawl and ratchet engaged, install 2 pawl stoppers.
Ensure alignment marks on tilt pawl and stopper align when stopper is
rotated to pawl side. If alignment marks do not align, select a
different size pawl stopper. See TILT PAWL STOPPER SIZE table.
TILT PAWL STOPPER SIZE TABLE
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