Page 246 of 788

ON-VEHICLE SERVICE
POWER STEERING37-12
TIE ROD END BALL JOINT TURNING
TORQUE CHECK
M1372001500297
CAUTION
•Do not remove the tie rod end nut from the
ball joint. Loosen it and use special tool to
avoid possible damage to the ball joint
threads.
•Hang special tool with cord to prevent it from
falling.
1. Install special tool ball joint remover (MB991897)
as shown in the figure.
2. Turn the bolt and knob as necessary to make the
jaws of special tool parallel, tighten the bolt by
hand and confirm that the jaws are still parallel.
NOTE: When adjusting the jaws in parallel, make
sure the knob is in the position shown in the
figure.
3. Tighten the bolt with a wrench to disconnect the
tie rod end.4. Move the ball joint stud several times and install
the nut on the stud. Using special tool preload
socket (MB990326), measure the ball joint turning
torque.
Standard value: 0.5 − 2.5 N⋅m
5. If the turning torque exceeds the standard value,
replace the tie rod end.
6. If the turning torque is under the standard value,
check the ball joint for axial play or ratcheting. If
no axial play or ratcheting, the ball joint can be
re-used.
CAUTION
Always use a new ball joint nut as it is a
self-locking nut.
7. Install the tie rod end to the knuckle, then tighten a
new self-locking nut to the specified torque.
Tightening torque: 25 ± 5 N⋅m
STATIONARY STEERING EFFORT CHECKM1372001700332
1. With the vehicle stopped on a flat and paved
surface, turn the steering wheel to the straight
ahead position.
2. Start the engine and set the engine idle speed.
Standard value: 1000 ± 100 r/min
3. Attach a spring balance to the outer
circumference of the steering wheel and measure
the steering force required to turn the steering
wheel from the straight ahead position to the left
and right (within a range of 1.5 turns). Also check
to be sure that there is no significant change in
the required steering effort.
Standard value:
Steering effort: 29 N or less
Fluctuation allowance: 5.9 N or less
4. If the measured value exceeds the standard
value, check and adjust the related parts.
AC208247AD
Cord
BoltMB991897
Nut
Ball joint
AC106821
Knob ParallelBolt
Good
Bad
AB
ACX01129
AB
MB990326
ACX01122
AB
Page 249 of 788

ON-VEHICLE SERVICE
POWER STEERING37-15
7. If it is not within the standard value, the probable
cause is a malfunction of the oil line or steering
gear, so check these parts and repair as
necessary.
8. Turn the steering wheel all the way to the left or
right; then check whether or not the retention
hydraulic pressure is the standard value.
Standard value: 8.8 − 9.5 MPa
9. If not the standard value, overhaul the steering
gear. Remeasure fluid pressure.
10. Remove the special tools, and then tighten the
pressure hose to the specified torque.
Tightening torque: 57 ± 7 N⋅m
11. Bleed the system (Refer to P.37-13).
POWER STEERING PRESSURE SWITCH
CHECK
M1372007200324
1. Disconnect the pressure hose from the oil pump,
and then connect the following special tools.
•MB990662: Power Steering Oil Pressure Gauge
•MB991548: Power Steering Oil Pressure Gauge
Adapter (pump side)
•MB991549: Power Steering Oil Pressure Gauge
Adapter (hose side)2. Bleed air, and then turn the steering wheel several
times while the vehicle is not moving so that the
temperature of the fluid rises to approximately 50
− 60°C.
3. The engine should be idling.
4. Disconnect the connector for the oil pressure
switch, and place an ohmmeter at the switch.
5. Gradually close the shut-off valve of the pressure
gauge and increase the hydraulic pressure, then
check whether or not the hydraulic pressure that
activates the switch is the standard value.
Standard value: 1.5 − 2.0 MPa
6. Gradually open the shut-off valve and reduce the
hydraulic pressure; then check whether or not the
hydraulic pressure that deactivates the switch is
the standard value.
Standard value: 0.7 − 2.0 MPa
7. Remove the special tools, and then tighten the
pressure hose to the specified torque.
Tightening torque: 57 ± 7 N⋅m
8. Bleed the system (Refer to P.37-13).
TIE ROD END BALL JOINT DUST COVER
CHECK
M1372008600262
1. Press the dust cover with your finger to check
whether the dust cover is cracked or damaged.
2. If the dust cover is cracked or damaged, replace
the tie rod end.
NOTE: If the dust cover is cracked or damaged,
the ball joint could be damaged.
STEERING COLUMN SHAFT ASSEMBLY
SHOCK ABSORBING MECHANISM
CHECK
M1372013500090
If a collision accident occurs or severe impact is
applied on the steering wheel, the collision energy
absorbing mechanism may have operated. Once the
mechanism has operated, it will be inoperative even
it has suffered no apparent damage. Determine if the
steering column shaft can be reused by the following
procedure. If the collision energy absorbing
mechanism has already operated, replace the
steering column shaft assembly.
If any excessive radial free play on the steering
wheel is found with the tilt lever in the lock position,
always check the steering shaft assembly.
ACX01134
AB
Temperature
gaugeAdapter
(MB991548)
Oil reservoirOil
pump
Adapter
(MB991549) Shut-off valve
Pressure gauge
(MB990662)
Page 250 of 788

ON-VEHICLE SERVICE
POWER STEERING37-16
WARNING
•If the vehicle continues to be driven after
the collision absorbing mechanism has
operated, the steering column shaft may
be damaged while it is in use.
•If there is a slack in the one-way capsule,
do not attempt to repair it but replace the
steering column shaft assembly.
Inspection Procedure
1. Remove the lower and upper column covers.
CAUTION
Do not release the tilt lever until the steering
column has been installed to complete this
inspection procedure.
2. Ensure that the tilt lever is in the lock position.
NOTE: If not, place the tilt lever in the lock
position.
3. Loosen the two steering column mounting bolts
(upper) by two turns.4. Hold the one-way capsules as shown, and then
try to lock them. If there is a slack in either of the
capsules, replace the steering column shaft
assembly.
NOTE: When installing a new steering column
shaft assembly, place the tilt lever in the lock
position, if it is not in place.
CAUTION
•Be careful that nothing is pinched between
the one-way capsules and the body.
•Do not release the tilt lever until the steering
column has been installed to complete this
inspection procedure.
5. If no problem is found during the inspection,
tighten the steering column mounting bolts to the
specified torque.
Tightening torque: 12 ± 2 N⋅m
AC304673AC304673
Steering
column
assembly
AB
Steering
column
mounting
bolt
AC304672
AC304673AC304673
AC304923AB
One way capsule
Page 251 of 788
STEERING WHEEL
POWER STEERING37-17
STEERING WHEEL
REMOVAL AND INSTALLATION
M1372011400183
WARNING
•Before removing the steering wheel and air bag module assembly, refer to GROUP 52B,
Service Precautions (P.52B-5) and Air Bag Module and Clock Spring (P.52B-210).
•When removing and installing the steering wheel, do not let it bump against the air bag
module.
NOTE: For air bag module removal, refer to GROUP
52B, Air Bag Module and Clock Spring P.52B-210.
Post-installation Operation
•Checking Steering Wheel Position with Wheels Straight
Ahead
AC107402AB
50 ± 5 N·m
1 2
2
1
12
A
AB
BTa b
Ta b Section A - A
Section B - B
Removal steps
<>1. Cover
<>2. Steering wheel and air bag module
assembly
Page 252 of 788
Page 253 of 788
Page 254 of 788
STEERING WHEEL
POWER STEERING37-20
<> STEERING WHEEL AND AIRBAG
MODULE ASSEMBLY REMOVAL1. By sliding section A of the clock spring connector
as shown in the illustration in the arrow direction,
disconnect the connector.
2. Loosen the bolt completely. Then, remove the
steering wheel and airbag module assembly.
NOTE: Use a hexagonal bit socket or a hexagonal
wrench having an effective length of 75 mm or
more in the hexagonal section and the diameter of
8 mm or more.
AC105823
AC304700
AC305145AB
A
Steering
wheel
Air bag module
connector
AC211762AC
Hexagonal bit
socket
Page 255 of 788