EMISSION CONTROL
ENGINE AND EMISSION CONTROL17-16
5. Replace the gasket, and tighten to the specified torque.
Tightening torque:
<4G1> 21 ± 4 N⋅m
<4G6> 20 ± 2 N⋅m
EGR PORT VACUUM CHECK <4G1>M1173002900167
AK300784AB
Green strip
1.Disco nnect the vacu um ho se (Green stripe) from
th e t h ro tt le b o d y EGR va cuu m ni pp le an d co nn ec t
a hand vacu um p u mp to the nipple.
2.Plu g the vacuum hose (Gree n stripe).
AK201224AB
Vac-
uum
Engine speed (r/min)
3.S t art the engin e and check t hat, af ter ra ising th e
engine spe ed by ra cin g the e ngine, p u rge vacuu m
raises according to engine speed.
NOTE: If ther e is a prob lem with change in vac-
uum, the t h rottle bod y p u rge port may be clo gged
an
d requ ire clean ing.
EGR PORT VA CUUM CHECK <4G6>M1173 0029 0015 6
AK300786AB
White stripe
1.Disco nnect the vacu um h o se (W hite strip e ) from
th e t h ro tt le b o d y EGR va cuu m ni pp le an d co nn ec t
a hand vacuum p u mp to the nipple.
2.Plug the vacuum hose (White stripe).
AK100011AC
Vac-
uum
Engine speed (r/min)
3.S t art the engine.
4.Check that a fairly const a nt n egative is gene rated
re gardle s s of the engine sp eed.
5.If no neg ative pressur e is genera t ed, th e port is
p r obably blocked an d sh ould be cleane d.
EGR CONTROL SOLENOID VA L V E
CHECK <
4 G1 >
M1173 0031 0023 8
NOTE: Whe n discon nect i ng th e va cuum hose,
always make a mark so th at it can be reconnected at
original p o sition.
AKX00351
A
B
AE
Battery
1. Disco nnect the vacu um h o se f r om th e solenoid
valve.
2.Disco nnect the ha rness connector .
3.Con nect a ha nd vacu um pump to nipp le (A) of the
solen o id valve (ref e r to th e ill ust r ation at le f t ).
4.Check a i r tightness b y ap plying a vacuum with
volt age applied d i rectly from t he batt e ry to the
EGR cont rol solen o id valve and withou t applyin g
volt age .
Battery voltageNormal condition
AppliedVa c u u m l e a k s
Not appliedVacuum maintained
AKX00352
EMISSI ON CONTROL
ENGINE AND E M ISSION CON T R O L17-17
5.Measure the resist ance between the te rmin als of
th e solenoid va lve .
St andard va lue: 29 − 35 Ω (at 20°C)
EGR CONTROL SOLENOID V A L V E
CHECK <
4 G6>
M1173 0031 0024 9
NOTE: Whe n discon nect i ng th e va cuum hose,
always
make a mark so th at it can be reconnected at
original p o sition.
AK201251AB
A
B
C
Battery
1.Disco nnect the vacu um h o se f r om th e solenoid
valve.
2.Disco nnect the ha rness connector .
3.Con nect a ha nd vacu um pump to nipp le (A) of the
solen o id valve (ref e r to th e ill ust r ation at le f t ).
4.Check a i r tightness b y ap plying a vacuum with
volt age applied d i rectly from t he batt e ry to the
EGR cont rol solen o id valve and withou t applyin g
volt age .
Battery
voltageB nipple
conditionNormal condition
Not appliedOpenVacuum
maintained
AppliedOpenVacuum leaks
ClosedVacuum
maintained
AK100016
5.Measure the resist ance betwee n the te rminals of
th e so lenoid valve .
St andard va lue: 29 − 35 Ω (at 20°C)
EMISSION CONTROL
ENGINE AND EMISSION CONTROL17-18
EXHAUST GAS RECIRCULATION (EGR)
VALVE REMOVAL AND INSTALLATION
M1173010500175
Pre-removal and Post-installation Operation
Air Cleaner Assembly Removal and Installation (Refer to
GROUP 15
P.15-3).
AC208130
21 ± 4 N·m
2
1
3
N
AC
<4G1>
AC301219
20 ± 2 N·m2
1
3
N
AB
Removal steps
1.Emission vacuum hose connection2.EGR valve
3.EGR valve gasket
Removal steps (Continued)
LUBRICANTS
POWER STEERING37-7
LUBRICANTS
M1372000400350
ItemSpecified lubricantQuantity
Power steering fluidATF DEXRON III or DEXRON IIApproximately 1.0 L
Steering gearBearingATF DEXRON III or DEXRON IIAs required
O-ring and seal ring
Oil seal
Special tool (MB991212,
MB991213)
Pinion and valve assembly
seal ring part
BellowsSilicon greaseAs required
Tie rod end ball jointMultipurpose grease SAE J310,
NLGI No.2 or equivalentAs required
Oil pumpFriction surface of rotor vane,
cam ring and pump coverATF DEXRON III or DEXRON IIAs required
O-ring
SEALANTS
M1372000500357
ItemSpecified sealant
Steering shaft cover assembly bolt hole on the toeboard3M ATD Part No.8513 or equivalent
Steering gearEnd plug3M ATD Part No.8661 or equivalent
Rack support cover
ON-VEHICLE SERVICE
POWER STEERING37-14
POWER STEERING SYSTEM AIR
BLEEDING
M1372002200330
Perform air bleeding procedure as necessary after
replacing the steering gear or the steering fluid lines.
1. Raise and support the front wheels.
2. Disconnect the ignition coil connectors (Refer to GROUP 16, Ignition Coil
P.16-38 or P.16-39).
CAUTION
Perform air bleeding only while cranking the
engine. If air bleeding is performed while the
engine is running, air could enter the fluid. Dur
-
ing air bleeding, refill the steering fluid supply so
that the level never falls below the "MIN" mark on
the oil reservoir.
3. Turn the steering wheel all the way to the left and
right five or six times wh ile using the starter motor
to crank the engine intermittently several times
(for 15 to 20 seconds).
4. Connect the ignition coil connectors (Refer to GROUP 16, Ignition Coil
P.16-38 or P.16-39).
5. Start the engine (idling).
6. Turn the steering wheel to the left and right until there are no air bubbles in the oil reservoir.
7. Confirm that the fluid is not milky, and that the level is between "MAX" and "MIN" marks.
8. Confirm that there is very little change in the fluid
level when the steering wheel is turned left and
right.
CAUTION
If the fluid level rises suddenly after the engine is
stopped, the air has not been completely bled. If
air bleeding is not complete, there will be abnor
-
mal noises from the pump and the flow-control
valve, and this condition could cause reduce the
life of the power steering components.
ACX01131With engine running With engine stoppedAC
Fluid level change: Within 5 mm
9. Confirm that the change in the fluid level is no more than 5 mm when the engine is stopped and
when it is running.
10.If the change of the fluid level is 5 mm or more,
the air has not been completely bled from the
system. The air bleeding procedure must be
repeated.
OIL PUMP PRESSURE TEST
M1372002300315
ACX01133
Temperature
gauge
Oil reservoir
Adapter
(MB991548)
Oil
pump Adapter
(MB991549)
AB
Shut-off valve
(fully closed)
Pressure
gauge
(MB990662)
1. Disconnect the pressure hose from the oil pump,
and then connect the following special tools.
•Power steering oil pressure gauge (MB990662)
•Power steering oil pressure gauge adapter (pump
side) (MB991548)
•Power steering oil pressure gauge adapter (hose
side) (MB991549)
2. Bleed air, 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. Start the engine and idle it at 750 ± 100 r/min.
CAUTION
The pressure gauge shut-off valve must not
remain closed for more than 10 seconds.
4. Fully close the shut-off valve of the pressure gauge and measure the oil pump relief pressure
to confirm that it is within the standard value
range. Open it again immediately after checking
the pressure.
Standard value: 8.8 − 9.5 MPa
5. If it is not within the standard value, replace the oil pump.
ON-VEHICLE SERVICE
POWER STEERING37-15
6. Check whether or not the hydraulic pressure is the standard value when no-load conditions are
created by fully opening the shut-off valve of the
pressure gauge.
Standard value: 0.2 − 0.7 MPa
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.37-14).
POWER STEERING PRESSURE SWITCH
CHECK
M1372007200324
ACX01134 AB
Temperature
gaugeAdapter
(MB991548)
Oil reservoir Oil
pump
Adapter
(MB991549)
Shut-off valve
Pressure gauge
(MB990662)
1. Disco nnect the pre s sure hose from the oil pump ,
an d then con nect the followin g sp ecial too l s.
•Power steering oil pressure gauge (MB990 662)
•Power steering oil pressure gauge ad apter (pump
side) (MB99154
8)
•Power steering oil pressure gaug e a dapte r (ho s e
side) (MB99154
9)
2. Bleed air , and the n turn t he steering wheel several
times while the vehicle is not moving so that the
tempe r atu r e o f th e flu i d rise s to approximately 50
−
60
°C.
3. Th e engine should be idling.
4.Disco nnect the conne ctor fo r the o il pr essure
switch , and p l ace an o h mmeter a t the switch .
5.Gradua lly close the shut-of f valve of the pressure
g auge a nd in crease the hyd r aulic pre ssu re, the n
check wheth e r or no t the h y drau lic pressure that
a c tivates the switch is the st a ndard valu e.
St andard va lue: 1.5 − 2.0 MPa
6.Gradua lly open the shut-of f va lve and re duce the
h y drau lic p r essure; then check whethe r o r n o t the
h y drau lic pressure that de activate s the switch is
th e st and ard va lue.
St andard va lue: 0.7 − 2.0 MPa
7.Remove the special tools, and then tighten the
p r essure hose to the specified torque .
Ti ghte n ing torque: 57 ± 7 N⋅m
8.Bleed the system (Refer to P.37-14).
TIE ROD END BALL JOINT DUST COVER
CHECK
M13720086 0026 2
1.Press th e dust co ver wit h you r fing er to check
whet her the dust cover is cra cke d or da mage d.
2.If the du st cover is cracked o r damaged, repla c e
th e tie rod end .
NOTE: If the dust cover is cra cke d or da mag ed,
th
e ball jo int could be da mage d.
STEERING COLUMN SHAFT ASSEMBL Y
SHOCK ABSORBING MECHANISM
CHECK
M13720135 0009 0
If a collision accid ent occu rs or seve re imp a ct is
applied on
the steering w heel, the collision energy
abso
r bing mechanism ma y h a ve opera t ed. Once the
mechanism
has o perate d , it will b e ino perative e v en
it has
suf f er ed no app a r en t d a mage . De termin e if the
steering colu
mn shaf t can b e reused b y th e following
proce
dure. If the collision en ergy a b sor b ing mecha
-
nism has already operated, rep l ace the steering col-
umn shaft assembly .
If any excessive radial fre e pla y on the steering
wh
eel is fo und with the tilt lever in the lock po sit i on,
always ch
eck the steering shaf t assembly .
POWER STEERING GEAR BOX AND LINKAGE
POWER STEERING37-26
DISASSEMBLY AND REASSEMBLY
M1372011100193
AC100244AC
3
13 ± 3 N·m
Steering gear seal kit
Flare nut
Repair kit grease
23
21
19 4
11 8
28
29
32
31
17
35
11
8
22 ± 4 N·m
59 ± 10 N·m
23 ± 2 N·m
-30
12
14
15
33
17
59 ± 10 N·m 25 ± 4 N·m
18
24
23
20
19
21
22
13
34 4
4
3
1 36
216
30
31
32
27
29
28
25 26
1188 ± 10 N·m
10
8
9
7
5
6
52 ± 2 N·m
35
Disassembly steps
>>O<<1.Gear mounting rubber
2.Gear housing mounting bushing
3.Feed pipe
4.O-ring
>>N<<5.Lock nut
>>N<<6.Tie rod end
7.Clip
>>M<<8.Bellows band
9.Bellows
>>L<<10.Tie rod
>>L<<11 .Tab washer
>>K<<•Total pinion torque adjustment
>>J<<12.Lock nut
<>>>J<<13.Rack support cover
14.Support spring
15.Rack support
>>I<<16.End plug
17.Lock nut
18.Valve housing assembly
<>>>H<<19.Lower oil seal
<>20.Pinion and valve assembly
<
<
<
24.Valve housing
<
<
<
<
<
<
<
32.O-ring
<
<
<>>>A<<35.Oil seal
36.Gear housing
Disassembly steps (Continued)
POWER STEERING GEAR BOX AND LINKAGE
POWER STEERING37-27
AC102865
3
23
21
19 4
11 8
8 11 35
17 3132 29
28
6
5
7
9
8
10
11
25
26
28 29
27
32
31
30 12
13
14
15
16
17 33
35
36 1
4
2
34
4 4
3
24
23
22
21 20
19
18
AD
Steering gear seal kit
Flare nut
Repair kit grease
22 ± 4 N·m
59 ± 10 N·m
25 ± 4 N·m
88 ± 10 N·m52 ± 2 N·m
59 ± 10 N·m 13 ± 3 N·m
23 ± 2 N·m -30
Disassembly steps
>>O<<1.Gear mounting rubber
2.Gear housing mounting bushing
3.Feed pipe
4.O-ring
>>N<<5.Lock nut
>>N<<6.Tie rod end
7.Clip
>>M<<8.Bellows band
9.Bellows
>>L<<10.Tie rod
>>L<<11 .Tab washer
>>K<<•Total pinion torque adjustment
>>J<<12.Lock nut
<>>>J<<13.Rack support cover
14.Support spring
15.Rack support
>>I<<16.End plug
17.Lock nut
18.Valve housing assembly
<>>>H<<19.Lower oil seal
<>20.Pinion and valve assembly
<
<
<
24.Valve housing
<
<
<
<
<
<
<
32.O-ring
<
<
<>>>A<<35.Oil seal
36.Gear housing
Disassembly steps (Continued)