1992 MAZDA PROTEGE steering

c>. .DOHC EGI MT wENGINE CONTROL SYSTEM (2/3) 0 _. .CANADA+11
ENGINE CONTROL UNIT
DOHC
2E @ 2w 2x 2s 2T 2U 2V
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El-01te ________ _________--___---_-_--------
_--____- I _______--_----__------------
L/W
(EM)
1 1
OXSTRIEUTOR W/R (EM)
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A
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l-01 ENGINE CONTROL UNITfEM) El-09 DISTRIEZJTOR IEM) 31-10 POWER STEERING
1U IS 10 10 It4 IK 11 IG iE IC 1A 2Y 2w au 2s 2Q 20 2M 2lc 21 26 2E PRESSURE SWITCH (F)
R/B O/L G/0 G * G/Y * G/W Y/B V L/R * L/O Y “rp L/W R * -G/
l-l 1 ISC VALVE (EM)
l-i8 WATER Tt+ERMOS~~;Sa~Bl-25 SOLENOID VALVE
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OUTLINE
Component Function Remark
Engine control unit (ECU) Controls operation of the following:
(Cont’d)
1. A/C (Cut-off) 1. A/C relay
2. Fail-safe function 2. Self-Diagnosis Checker and MIL
3. Fuel injection system 3. Injector
4. idle speed control 4. Idle speed control (ISC) valve
5. Ignition timing control system 5. Igniter
6. Monitor function 6. Monitor lamp (Self-Diagnosis Checker)
7. Pressure regulator control system 7. Solenoid valve
(Pressure regulator control) (BP)
8. Purge control system 8. Purge control solenoid valve
9. VICS 9. Solenoid valve (WCS) (DOHC) Fuel filter
Filters particles from fuel Fuel pump
Provides fuel to injectors l Operates while engine running l Installed in fuel tank Igniter
Receives spark signal from ECU and gener-
ates high voltage in ignition coil Ignition switch
Engine cranking signal sent to ECU (START position)
Inhibitor switch (ATX)
Detects in-gear condition; sends signal to Switch ON in N or P range
ECU Injector
Intake air thermosensor
Idle speed control (ISC)
valve
Main relay
(FUEL INJ relay)
MIL (Malfunction
indicator lamp)
Neutral switch (MTX)
Oxygen sensor
PCV valve
P/S pressure switch
Pressure regulator
Resonance chamber
Resonance duct
Separator
Stoplight switch
Solenoid valve
(Purge control)
Shutter valve actuator
(DOHC)
Throttle body
Throttle sensor
Injects fuel into intake port l Controlled by signals from ECU
l High-ohmic injector
Detects intake air temperature; sends signal Installed on dynamic chamber
to ECU
Controls bypass air amount Controlled by duty signal from ECU
Supplies electric current to injectors, ECU,
etc.
Lamp flashes to indicate malfunction code
number of input and output devices
Detects in-gear condition; sends signal to
ECU
Detects oxygen concentration; sends signal
to ECU
Controls blowby gas introduced into engine
Detects P/S operation; sends signal to ECU
Adjusts fuel pressure supplied to injectors
Reduces intake air noise
Reduces intake air noise
Prevents fuel from flowing into charcoal
canister
Detects braking operation (deceleration),
sends signal to ECU
Controls evaporative fumes from canister to
intake manifold
Closes/opens shutter valve to improve
torque characteristics
Controls intake air quantity
l Detects throttle valve fully closed/fully
opened condition (MTX) TEN terminal grounded
Switch ON in neutral
Zirconia ceramic and platinum coating
P/S: ON when steering wheel turned right or
left
Controlled by duty signal from ECU
For Variable inertia charging system (VICS*)
Integrated throttle sensor, dashpot, and ISC
valve
l Detects throttle valve opening angle
(A-W
l Sends signals to ECU
F-l 7

CONTROL SYSTEM F
23UOFX-151
WASHER,
REPLACE
9MUOF2-24
05UOFX-25

9MUOF2-24
NEUTRAL SWITCH (MTX)
Inspection
1. Disconnect the neutral switch connector.
2. Connect an ohmmeter to the switch.
3. Check continuity of the switch.
Transmission Continuity
Neutral Yes
Other ranges No
4. If not as specified, replace the neutral switch.
Replacement
Replace the neutral switch as shown in the figure.
POWER STEERING PRESSURE SWITCH
Inspection
1. Disconnect the P/S pressure switch connector.
2. Connect an ohmmeter to the switch.
3. Start the engine and let it idle. Check continuity of the switch
while turning the steering wheel.
P/S
Turning
Not turning Continuity
Yes
No
4. If not as specified, replace the P/S pressure switch.
Replacement
Replace the P/S pressure switch as shown in the figure.
F-l 73

M’
FRONT AND REAR AXLES
INDEX .....................................................
OUTLINE .................................................
SPECIFICATIONS ....................................
TROUBLESHOOTING GUIDE.. .................... ;I ;
FRONT AXLE ......................................... M- 3
REAR AXLE ........................................... M- 3
FRONT AXLE ........................................... M- 4
PREPARATION .......................................
WHEEL HUB, STEERING KNUCKLE.. ........ ii- d
-
REAR AXLE ............................................. M-10
PREPARATION ....................................... M-10
DRUM BRAKE TYPE ............................... M-l 1
DISC BRAKE TYPE ................................. M-14
DRIVE SHAFT .......................................... M-17
PREPARATION ....................................... M-17
JOINT SHAFT (BP DOHC). ....................... M-18
DRIVE SHAFT (TRIPOD JOINT). ................ M-21
23UOMX-001

OUTLINE, TROUBLESHOOTING GUIDE M
OUTLINE
SPECIFICATIONS
Engine/Transaxle
86 SOHC
I BP SOHC BP DOHC
MTX 1 ATX 1 MTX 1 ATX
Front axle
Bearing play axial direction Rear axle
Bearina olav axial direction I
mm (in) 0.05 (0.002)
mm (in) I 0.05 (0.002) Drive shaft
j Inside Tripod ioint
I Joint type I -
Outside I Ball ioint 1
Right side 919.3 (36.19)
918.7 (36.17) 630.7 (24.83)
Length of shaft
mm (in)
Left side 637.8 (25.11)
640.2 (25.20) 621.2 637.1
(24.46) (25.08)
Shaft diameter mm (in) Right side 21.5 (0.85) 23.0 (0.91)
Left side
21.5 (0.85)
23.0 (0.91)
23UOMX-003
TROUBLESHOOTING GUIDE
FRONT AXLE Problem
Steering wheel
vibration
Steering wheel pulls
or one-sided braking
Excessive steering
wheel play
Abnormal noise
Grease leakage from
boot Possible Cause Action
Worn or damaged wheel bearing
Excessive wheel bearing play
Worn or damaged wheel bearing
Excessive wheel bearing play
Excessive wheel bearing play Replace
Tighten or replace
Replace
Tighten or replace
Tighten or replace
Bent drive shaft or joint shaft
Worn or damaged wheel bearing
Worn drive shaft or joint shaft splines
Insufficient grease in joint or on splines of drive shaft
insufficient grease in joint or splines of joint shaft
Nom drive shaft tripod joint Replace
Replace
Replace
Replenish or replace
Add or replace
Replace
Damaged or broken boot
Faulty boot band
Excessive grease Replace
Replace
Reoair Page M- 7
M- 5,7
M- 7
M- 5,7
M- 57
M-18, 22
M- 7
M-18, 22
M-22, 25
M-18
M-25
M-25
M-25
M-25
23UOMX-004
REAR AXLE Problem Possible Cause Action Page
Steering wheel
Worn or damaged wheel bearing
Replace M-11, 14 vibration
Excessive wheel bearing play Tighten or replace M-11, 14 Steering wheel pulls
Worn or damaged wheel bearing Replace M-11, 14 or one-sided braking Excessive wheel bearing play Tighten or replace M-11, 14 Excessive steering
Excessive wheel bearing play Tighten or replace M-11, 14 wheel olav
Abnormal noise
Worn or damaged wheel bearing Replace M-11, 14
23UOMX-005
M-3

FRONT AXLE M
WHEEL HUB, STEERING KNUCKLE
Preinspection
Wheel bearing play
1. Remove the wheel and tire.
2. Remove the brake caliper assembly and disc plate.
3. Position a dial indicator against the wheel hub. Push and
pull the wheel hub by hand in the axial direction and meas-
ure the wheel bearing play.
4. If the bearing play exceeds specification, check and adjust
the locknut torque or replace the wheel bearing if necessary.
Removal / Installation
d Maximum wheel bearing play: 0.05mm (0.002 in)
1. Remove in the order shown in the figure, referring to Removal Note.
2. Inspect all parts and repair or replace as necessary.
3. Install in the reverse order of removal, referring to
Installation Note.
4. After installation, check the front wheel alignment. (Refer to Section R.)
SERVIC\E, SECTION R

7 93--12? W.-L%” COTiER PIN, REPLACE
(9.5-12.9, 69-S
39-54
(4.0-5.6, 29-40) 39-64 ’ 236-319 (24.0-32.5, 174-235)
(4.4-6.0, 32-43)
66-67)
N.m (m-kg, it-lb)
23UOMX-006
1. Wheel and tire
2. Locknut
Installation Note . . . . . . . . . . . . . . . . . . . . . . . . . page M- 6
3. Brake caliper assembly
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section P
4. Disc plate
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section P
5. Tie rod end
Removal Note . . . . . . . . . . . . . . . . . . . . . . . . . . . . page M- 6
Installation Note . . . . . . . . . . . . . . . . . . . . . . . . . page M- 6 6. Lower ball joint
7. Knuckle, wheel hub, and dust cover
Inspect wheel hub for cracks and damage
Inspect knuckle spindle for cracks and
damage
Inspect dust cover for damage and dis-
tortion
Disassembly / Inspection I
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page M- 7
M-5

N
STEERING SYSTEM
INDEX ......................................................
MANUAL STEERING ............................... ;I g
ENGINE SPEED SENSING POWER
STEERING (ESPS) ................................. N- 3
OUTLINE ..................................................
SPECIFICATIONS .................................... ;I ::
MANUAL STEERING ..................................
PREPARATION ....................................... ;I ;
TROUBLESHOOTING GUIDE.. .................. N- 5
BOOT ................................................... N- 6
STEERING WHEEL AND COLUMN.. .......... N- 6
STEERING GEAR AND LINKAGE .............. N-13
ENGINE SPEED SENSING POWER
STEERING .............................................. N-23
PREPARATION ....................................... N-23
TROUBLESHOOTING GUIDE.. .................. N-25
AIR BLEEDING ....................................... N-26
STEERING WHEEL AND COLUMN.. .......... N-26
POWER STEERING FLUID.. ...................... N-27
STEERING GEAR AND LINKAGE .............. N-30
POWER STEERING OIL PUMP.. ................ N-37
DRIVE BELT ........................................... N-41
23UONX-001

INDEX
MANUAL STEERING
STEERING WHEEL PLAY
NON-TILT
23UONX-00.
1. Boot 3. Steering gear and linkage
Removal / Installation page N- 6 Removal / Installation..
................ page N-l 3 ..................
2. Steering wheel and column Disassembly ............................... page N-15
Inspection (On-vehicle)
............... page N- 8 Inspection ................................... page N-17
Removal I Installation.. ................
page N- 9 Assembly .................................... page N-19
Disassembly / Assembly.. ........... page
N-l 0
Inspection ...................................
page N-l 1
_’
N-2