Page 105 of 800
Page 106 of 800
Page 107 of 800

17-1
GROUP 17
ENGINE AND
EMISSION
CONTROL
CONTENTS
ENGINE CONTROL . . . . . . . . . .17-2
GENERAL INFORMATION . . . . . .17-2
SERVICE SPECIFICATIONS. . . . .17-2
ON-VEHICLE SERVICE. . . . . . . . .17-2
ACCEL CABLE CHECK AND
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . 17-2
ACCELERATOR CABLE AND
PEDAL . . . . . . . . . . . . . . . . . . . . . .17-3
REMOVAL AND INSTALLATION . . . . . 17-3
EMISSION CONTROL MPI . . . .17-4
GENERAL INFORMATION . . . . . .17-4
EMISSION CONTROL DEVICE
REFERENCE TABLE . . . . . . . . . .17-4
SERVICE SPECIFICATION(S) . . .17-5
VACUUM HOSE. . . . . . . . . . . . . . .17-5
VACUUM HOSE PIPING DIAGRAM . . . 17-5
VACUUM CIRCUIT DIAGRAM . . . . . . . 17-7
VACUUM HOSE CHECK. . . . . . . . . . . . 17-7
VACUUM HOSE INSTALLATION . . . . . 17-8
CRANKCASE EMISSION CONTROL
SYSTEM . . . . . . . . . . . . . . . . . . . . .17-8
GENERAL INFORMATION (CRANKCASE
EMISSION CONTROL SYSTEM) . . . . . 17-8
COMPONENT LOCATI ON (CRANKCASE
EMISSION CONTROL SYSTEM) . . . . . 17-9
POSITIVE CRANKCASE VENTILATION SYSTEM
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . 17-9
POSITIVE CRANKCASE VENTILATION (PCV)
VALVE CHECK . . . . . . . . . . . . . . . . . . . 17-9
EVAPORATIVE EMISSION CONTROL
SYSTEM . . . . . . . . . . . . . . . . . . . . .17-9
GENERAL INFORMATION (EVAPORATIVE
EMISSION CONTROL SYSTEM) . . . . . 17-9
COMPONENT LOCATION (EVAPORATIVE
EMISSION CONTROL SYSTEM) . . . . . 17-10
PURGE CONTROL SYSTEM CHECK . . 17-10
PURGE PORT VACUUM CHECK . . . . . 17-11
PURGE CONTROL SOLENOID VALVE
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . 17-11
FUEL VAPOUR CANISTER REMOVAL
AND INSTALLATION . . . . . . . . . . . . . . . 17-12
EXHAUST GAS RECIRCULATION
(EGR) SYSTEM . . . . . . . . . . . . . . .17-12
GENERAL INFORMATION
(EGR SYSTEM) . . . . . . . . . . . . . . . . . . . 17-12
COMPONENT LOCATION
(EGR SYSTEM) . . . . . . . . . . . . . . . . . . . 17-14
EGR SYSTEM CHECK . . . . . . . . . . . . . 17-15
EGR VALVE CHECK . . . . . . . . . . . . . . . 17-15
EGR PORT VACUUM CHECK <4G1>. . 17-16
EGR PORT VACUUM CHECK <4G6>. . 17-16
EGR CONTROL SOLENOID VALVE
CHECK <4G1> . . . . . . . . . . . . . . . . . . . . 17-16
EGR CONTROL SOLENOID VALVE
CHECK <4G6> . . . . . . . . . . . . . . . . . . . . 17-17
EXHAUST GAS RECIRCULATION (EGR)
VALVE REMOVAL AND I
NSTALLATION . . . . . . . . . . . . . . . . . . . . 17-18
CATALYTIC CONVERTER . . . . . .17-19
REMOVAL AND INSTALLATION
<4G1, 4G6-M/T> . . . . . . . . . . . . . . . . . . 17-19
REMOVAL AND INSTALLATION
<4G6-A/T> . . . . . . . . . . . . . . . . . . . . . . . 17-19
Page 108 of 800

ENGINE CONTROL
ENGINE AND EMISSION CONTROL17-2
ENGINE CONTROL
GENERAL INFORMATIONM1171000100277
A cable-type accelerator mechanical sus-
pended-type pedal has been adopted.
SERVICE SPECIFICATIONS
M1171000300088
ItemStandard value
Accel cable play mm1.0 − 2.0
Engine idle speed r/min4G1750 ± 50
4G6750 ± 100
ON-VEHICLE SERVICE
ACCEL CABLE CHECK AND
ADJUSTMENT
M1171000900314
1. Turn A/C and lights OFF. Inspect and adjust at no load.
2. Warm engine until stabilized at idle.
3. Confirm idle speed is at standard value.
Standard value:
750 ± 50 r/min <4G1>
750 ± 100 r/min <4G6>
4. Stop engine. [ignition switch: LOCK (OFF)
position].
5. Confirm there are no sharp bends in the accelerator cable.
6. Check the inner cable for correct slack.
Standard value: 1.0 − 2.0 mm
7. If there is too much slack or no slack, adjust play by the following procedures.
AC207966
Adjusting bolts
Plate
Accel cable
AC
<4G1>
AC301055
Adjusting bolts
Plate
Accel cable
AC
<4G6>
(1) Loosen th e adjusting bo lt s to re lease the
cab l e.
(2) M o v e th e pla t e until the inne r cab l e play is a t
the st andard value, an d then tighte n the
adjusting bo lt s.
(3) A f t e r adju s ting, check that the thro ttle leve r is
touching the stoppe r .
Page 109 of 800
ENGINE CONTROL
ENGINE AND EMISSION CONTROL17-3
ACCELERATOR CABLE AND PEDAL
REMOVAL AND INSTALLATION
M1171001200341
Post-installation Operation
Adjusting the Accelerator Cable (Refer to P.17-2).
Y1059AU
Y1060AU
AC304070
N
4
5 7 8
10
11
N12
13
AB
1
2 3
5.0 ± 1.0 N·m
6
12 ± 2 N·m9
7
1
2
3
5.0 ± 1.0 N·m
N
4
5
7
8
10
11
N12
13
6
12 ± 2 N·m
9
7
Accelerator cable assembly
removal steps
1.Inner cable connection (Accelerator
pedal side)
2.Inner cable connection (Throttle body
side)
3.Accelerator cable assembly
Accelerator pedal assembly
removal steps
1.Inner cable connection (Accelerator
pedal side)
4.Accelerator pedal assembly
5.Accelerator control equip nut
6.Accelerator pedal arm and
accelerator pedal pad assembly
Page 110 of 800

EMISSION CONTROL
ENGINE AND EMISSION CONTROL17-4
INSTALLATION SERVICE POINT
>>A<< ACCEL PEDAL PAD INSTALLA-
TION
CAUTION
To prevent damages to the accelerator pedal pad,
warm the thumb area of the accelerator pedal
pad with a dryer, etc. prior to assembling it.
NOTE: If it is difficult to assemble, apply soapy water
to the thumb area to enhance the assembling proc
-
ess.
EMISSION CONTROL
GENERAL INFORMATION
M1173000100370
The emission control system consists of the following
subsystems:
•Crankcase emission control system
•Evaporative emission control system
•
ItemsNameSpecification
Crankcase emission control
systemPositive crankcase ventilation
(PCV) valveVariable flow type
(Purpose: HC reduction)
Evaporative emission control
systemCanister
Purge control solenoid valve
Equipped
Duty cycle type solenoid valve
(Purpose: HC reduction)
Exhaust emission control systemAir-fuel ratio control device - MPI
systemOxygen sensor feedback type
(Purpose: CO, HC, NOx reduction)
Exhaust gas recirculation system
•EGR valve
•EGR control solenoid valve
Equipped
Single type
Duty cycle type solenoid valve
(Purpose: NOx reduction)
Catalytic converterMonolith type
(Purpose: CO, HC, NOx reduction)
Exhaust emission control system
EMISSION CONTROL DEVICE
REFERENCE TABLE
M1173006600135
Related partsCrankcase
emission
control
systemEvaporative
emission
control
systemAir/fuel ratio
control
systemCatalytic
converterExhaust gas
recirculation
system
PCV valve×
Purge control solenoid valve×
MPI system component××
Catalytic converter×
EGR valve×
EGR control solenoid valve×
7.Accelerator control equip bushing
8.Accelerator pedal arm return spring
9.Accelerator pedal arm stopper
10.Accelerator pedal arm bracket
11 .Accelerator pedal arm
>>A<<12.Accelerator pedal pad
13.Accelerator pedal arm stopper
Accelerator pedal assembly
removal steps (Continued)
Page 111 of 800
EMISSION CONTROL
ENGINE AND EMISSION CONTROL17-5
SERVICE SPECIFICATION(S)
M1173000300288
ItemsStandard value
Purge control solenoid valve coil resistance (at 20°C) Ω30 − 34
EGR control solenoid valve coil resistance (at 20°C) Ω29 − 35
VACUUM HOSE
VACUUM HOSE PIPING DIAGRAMM1173000900417
AK300964
To
fuel tankFuel pressure
regulatorFrom
fuel pump
Catalytic
converter Catalytic
converter
Oxygen sensor
(front)
Oxygen sensor (rear)EGR valve
<4G1>
EGR control
solenoid valvePurge control
solenoid valve CanisterAir
AB
Air cleaner
Page 112 of 800
AK204364AC
Air cleaner
Air
Canister
Purge control
solenoid valve
EGR control
solenoid valve
EGR valve
From
fuel pump
To
fuel tank Fuel pressure
regulator
PCV valve
Oxygen sensor
(front)
Oxygen sensor (rear)
Catalytic
converter
Catalytic
converter
<4G6>
EMISSION CONTROL
ENGINE AND E M ISSION CON T ROL17-6