Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Celica 1988-1989.1993-1994.2000 Approved Toyota Celica 1994 steering column tilt
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STEERING COLUMN - TILT
1994 Toyota Celica
1994 STEERING
Toyota - Steering Column - Tilt Wheel
Celica
DESCRIPTION & OPERATION
Tilt steering wheels incorporate a mainshaft, attached by a
"U" joint to an intermediate steering shaft. These shafts are held in
place by upper and lower column tubes. Tubes are pinned together so
upper tube can move up or down. Upper tube is locked in place by pawl
attached to lever. Steering columns are collapsible.
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. See the AIR BAG RESTRAINT SYSTEM article in the
ACCESSORIES/SAFETY EQUIPMENT section.
ADJUSTMENTS
SPIRAL CABLE
Spiral cable MUST be correctly adjusted to ensure proper air
bag operation. Ensure front wheels are in a straight-ahead position.
Turn spiral cable (located on combination switch) counterclockwise by
hand until it becomes hard to turn cable. Turn spiral cable clockwise
about 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 & AIR BAG
NOTE: See DISABLING & ACTIVATING AIR BAG SYSTEM.
Removal
1) Ensure front wheels are in a straight-ahead position. Turn
ignition off. 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
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 mainshaft for
installation reference. Remove steering wheel nut. Using steering
wheel puller, remove steering wheel.
Installation
1) To install, reverse removal procedure. Before installing
steering wheel, ensure spiral cable is properly aligned. See
SPIRAL CABLE under ADJUSTMENTS. Tighten steering wheel nut and Torx
screws to specification. See TORQUE SPECIFICATIONS.
2) After steering wheel 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 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 & AIR BAG under
REMOVAL & INSTALLATION. Remove instrument panel lower finish panel.
Remove upper and lower steering column covers. Locate and disconnect
combination switch and spiral cable 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 and spiral cable to steering column. Remove combination switch
with spiral cable. To install, reverse removal procedure. Tighten
steering wheel nut to specification. See TORQUE SPECIFICATIONS.
IGNITION SWITCH & LOCK CYLINDER
Removal
1) Remove steering wheel and combination switch (if
necessary). See STEERING WHEEL & AIR BAG and 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 ignition switch and lock cylinder.
Installation
To install, reverse removal procedure. Install NEW shear
bolts. Tighten shear bolts finger tight. Ensure proper operation of
ignition switch and lock cylinder. Tighten shear bolts until heads
break off. Install combination switch, upper and lower steering column
covers and steering wheel (if removed). Tighten steering wheel nut and
Torx screws to specification. See TORQUE SPECIFICATIONS.
STEERING COLUMN
Removal & Installation
1) Disconnect and shield 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 steering 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 switch with spiral cable.
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. Tighten bolts and nuts to specification.
See TORQUE SPECIFICATIONS.
OVERHAUL
STEERING COLUMN
Disassembly
1) Remove ignition key light. Remove sliding yoke bolt. Turn
thrust stopper (if equipped) and place mating marks on sliding yoke
and mainshaft. Remove yoke and thrust stopper. Remove lower column
cover. See Fig. 6.
2) Drill out shear bolt studs. Using a screw extractor,
remove column bracket bolts. Remove bracket and column upper clamp.
Remove wiring harness clamp and column protector. Remove compression
spring and bushings. Remove 3 tension springs. Remove steering damper
(if equipped) and turn signal bracket.
3) Remove right tilt lever retainer. Remove left tilt lever
retainer bolts, nuts, "E" ring and spacer. Remove tilt lever retainer
and collar. Remove right tilt pawl, stopper and tilt lever. Remove
left pawl, stopper, sub-lever, lever assembly and lock shaft. Using
hex wrench, remove memory bolt and nut (if equipped).
4) 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 and bushing stopper from mainshaft (if
equipped).
5) Using a press, compress spring on mainshaft. Remove snap
ring. Remove mainshaft from column tube. Remove spring, thrust collar
and bearing.
Inspection
Ensure lock mechanism operates properly. Check mainshaft
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) To reassemble, reverse disassembly procedure. Apply
molybdenum disulfide lithium base grease to tilt lever assembly, lock
bolt, mainshaft 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. See Fig. 4. 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. See Fig. 5. If alignment marks do not
align, select a different size pawl stopper. See TILT PAWL STOPPER
SELECTION table.
TILT PAWL STOPPER SELECTION
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