MITSUBISHI MONTERO 2000 Service Repair Manual

V
olt a ge V I
d le posit io n 0
.8 -1.0 F
ully open 3
.7 -4.9 M
D998464 W
hit e
R
ed B
la ck B
lu e E
ngin e co ola nt te m pera tu re gauge unit
( b uilt - in engin e co ola ntte m pera tu re se nso r)
w
ww.W ork sh opM an uals .c o .u k
P urc h ased f r o m w ww.W ork sh opM an uals .c o .u k

R
esis ta nce (k W ) 0 7
.7 -9.5 2
0 2
.9 -3.6 4
0 1
.3 -1.7 8
0 0
.2 6 -0.3 5

C
HEC K AT TH E GLO W &EG R CO NTR O L UNIT
T E R M IN AL VO LTA G E CHEC K CHART
G lo w &EG R Contr o l Unit Connecto r Te rm in al Arra n gem en t C
heck it e m C
heck co ndit io n (E ngin e co ndit io n) N
orm alco ndit io n 3 E
G R so le noid va lv e I
g nit io n sw it c h : O N B
atte ry vo lt a ge N
o.1 W
hile engin e is id le afte r havin g warm ed up, su ddenly
d epre ss th e acce le ra to r pedal. M
om enta rily in cre ase s 6 L
eve r posit io n I
g nit io n sw it c h :O N S
et th ro ttle le ve r to id le posit io n 0
.8 -1.0 V s
e nso r F
ully open th ro ttle le ve r 3
.7 -4.9 V 7 S
enso r im pre sse d
v o lt a ge I
g nit io n sw it c h : O N 4
.8 -5.2 V 1
6 E
G R so le noid va lv e I
g nit io n sw it c h : O N B
atte ry vo lt a ge N
o.2 W
hile engin e is id le afte r havin g warm ed up, su ddenly
d epre ss th e acce le ra to r pedal. M
om enta rily decre ase s C
heck it e m N
orm alco ndit io n (C heck co ndit io n) 3
-1 E
G R so le noid va lv e No.1 3
6 -44 W (A t20_C ) 5
-Body earth E
ngin e co ola nt te m pera tu re se nso r 7
.7 -9.5 kW (C oola nt te m pera tu re at 0_C ) 2
.9 -3.6 kW (C oola nt te m pera tu re at 20_C ) 1
.3 -1.7 kW (C oola nt te m pera tu re at 40_C ) 0
.2 6 -0.3 5 kW (C oola nt te m pera tu re at 80_C ) 1
1 -24 E
ngin e sp eed se nso r 1
.3 -1.9 kW E
G R so le noid va lv e No.2 3
6 -44 W (A t20_C )

ENGINE AND EMISSION CONTROL -Emission Control System
<4M4-Vehicles with EGR>17-52
EMISSION CONTROL SYSTEM <4M4-VEHICLES WITH
EGR>
GENERAL INFORMATION
The electronically-controlled EGR system and the
fuel injection timing control system (load timer)
reduce the level of exhaust gases (NO
x).
ItemsNameSpecification
Exhaust emission
control systemExhaust gas recirculation system
DEGR valve
DEGR solenoid valve No.1
DEGR solenoid valve No.2Electronically-controlled EGR system
Single type
Duty cycle solenoid valve
ON-OFFsolenoid valve
SERVICE SPECIFICATIONS
ItemsStandard value
EGR solenoid valve No.1/No. 2 resistance (at 20_C)W36 - 44


www.WorkshopManuals.co.uk


Purchased from www.WorkshopManuals.co.uk

E
G R so le n oid valv e No.1 1
7-5 3 E
XH AUST GAS REC IR CULA TIO N (E G R) SYSTE M
G EN ER AL IN FO RM ATIO N
T he ele ctr o nic a lly -c o ntr o lle d EG R syste m co nsis ts
o f an EG R va lv e , va cu um pum p, EG R so le noid
v a lv e s No. 1 and No. 2, glo w &EG R co ntr o l unit
a nd va rio us se nso rs .
T he EG R va lv e is co ntr o lle d by th e negativ e
p re ssu re in sid e th e va lv e , whic h is co ntr o lle d by
E G R so le noid va lv e s No. 1 and No. 2. T
he EG R so le noid va lv e s No.1 and No. 2 are
o ptim ally co ntr o lle d by th e glo w &EG R co ntr o l
u nit in re sp onse to th e engin e opera tio n co ndit io ns,
b ase d on data in put fr o m each of th e se nso rs .
I n th is way, th e EG R is co ntr o lle d to re duce NO
x
e m is sio ns while main ta in in g good engin e
p erfo rm ance .
S YSTE M DIA G RAM

E
G R va lv e co ndit io n I
d lin g wit h out any lo ad O
pen S
udden ra cin g C
lo se d (D ia phra gm lo w ers ) N
orm alco ndit io n W
hen cu rre nt is
f lo w in g V
acu um le aks (V acu um is m ain ta in ed when
n ip ple A is plu gged). W
hen cu rre ntis not
f lo w in g V
acu um le aks (V acu um is m ain ta in ed when
n ip ple B is plu gged). N
orm alco ndit io n W
hen cu rre ntis
f lo w in g V
acu um le aks (V acu um is m ain ta in ed when
n ip ple C is plu gged). W
hen cu rre ntis not
f lo w in g V
acu um is m ain ta in ed. <
E G R so le n oid valv e No.2 >
w
ww.W ork sh opM an uals .c o .u k
P urc h ased f r o m w ww.W ork sh opM an uals .c o .u k

4
9 ±
10 N×
m
R em oval ste p s
1 . C ata ly tic co nve rte r
2 . S eal rin g E
G R so le noid
v a lv e No. 1
w
ww.W ork sh opM an uals .c o .u k
P urc h ased f r o m w ww.W ork sh opM an uals .c o .u k

NOTES


www.WorkshopManuals.co.uk


Purchased from www.WorkshopManuals.co.uk

17-1
ENGINE AND
EMISSION
CONTROL
CONTENTS
ENGINE CONTROL SYSTEM 2........
GENERAL 2...............................
Outline of Change 2.........................
EMISSION CONTROL SYSTEM
<4D5-STEPIII>
2 .....................................
GENERAL 2...............................
Outline of Changes 2........................
GENERAL INFORMATION 2................
SERVICE SPECIFICATIONS 2..............
EXHAUST GAS RECIRCULATION (EGR)
SYSTEM 3................................EGR VALVE AND EGR COOLER 6.........
CATALYTIC CONVERTER 8................
EMISSION CONTROL SYSTEM <4M4>
9 .....................................
GENERAL 9...............................
Outline of Change 9.........................
SERVICE SPECIFICATIONS 9..............
EXHAUST GAS RECIRCULATION (EGR)
SYSTEM 9................................
EGR VALVE AND EGR COOLER 11........


www.WorkshopManuals.co.uk


Purchased from www.WorkshopManuals.co.uk

ENGINE AND EMISSION CONTROL -EngineControlSystem/EmissionControl
System <4D5-Step III>17-2
ENGINE CONTROL SYSTEM
GENERAL
OUTLINE OF CHANGE
Electronic-controlled throttle valve system has been used instead of a conventional cable-type accelerator
mechanism <4D5>.
Its service procedure is the same as for previous models with 6G7 or 4M4 engine.
EMISSION CONTROL SYSTEM <4D5-STEP
III>
GENERAL
OUTLINE OF CHANGES
Some service procedures have been established as the following changes have been made due to the
compliance with the Emission Regulation Step III.
DAn electronic-controlled EGR valve and EGR cooler have been used.
DA catalytic converter has been added.
GENERAL INFORMATION
The electronically-controlled EGR system reduces
the level of exhaust gases (NO
x).
ItemsNameSpecification
Exhaust emission
control systemExhaust gas recirculation system
DEGR valve
DEGR solenoid valve No.1
DEGR solenoid valve No.2
DEGR valve position sensorElectronically-controlled EGR system
Single type
ON-OFF solenoid valve
ON-OFF solenoid valve
Variable resistor type
SERVICE SPECIFICATIONS
ItemsStandard value
EGR solenoid valve Nos. 1 and 2 resistance (at 20_C)Ω36 - 44


www.WorkshopManuals.co.uk


Purchased from www.WorkshopManuals.co.uk