MITSUBISHI MONTERO 2000 Service Repair Manual

13A-2
GASOLINE DIRECT
INJECTION (GDI)
CONTENTS
GENERAL 3.................................
Outline of Changes 3...........................
GENERAL INFORMATION 3..................TROUBLESHOOTING 3.......................
ON-VEHICLE SERVICE 7.....................Oxygen Sensor Check 7........................


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GDI -General/General Information/Troubleshooting13A-3
GENERAL
OUTLINE OF CHANGES
Due to the changes as shown below, the service procedures regarding the different description from
the previous version have been established.
DOn M/T, the engine-ECU has been changed as diagnosis code P1603 has been added.
DOn A/T, the engine-A/T-ECU has been changed as an on-board diagnosis system has been adopted.
The engine warning lamp control, the diagnosis function, the service data output and the actuator
test are basically the same as for M/T.
DOn A/T, an dual oxygen sensor has been adopted. This sensor is the same as for the previous
M/T.
GENERAL INFORMATION
GENERAL SPECIFICATIONS
ItemsSpecifications
Engine-ECU <M/T>Identification No.E2T79277 <LHD>
E2T79278 <RHD>
Engine-A/T-ECU <A/T>Identification No.E2T76292 <LHD>
E2T76293 <RHD>
TROUBLESHOOTING
DIAGNOSIS FUNCTION
ENGINE WARNING LAMP (CHECK ENGINE LAMP)
The following item has been added as diagnosis code P1603 has been added. The other items are
the same as before.
Engine warning lamp inspection items
Code No.Diagnosis item
P1603Battery backup line malfunction
INSPECTION CHART FOR DIAGNOSIS CODES
Diagnosis code P1603 has been added. The other codes are the same as for the previous M/T.
Code No.Diagnosis itemReference page
P1603Battery backup line malfunction13A-4


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GDI -TroubleshootingGDI -Troubleshooting13A-4
INSPECTION PROCEDURE CLASSIFIED BY DIAGNOSIS CODE
Code No. P1603 Battery backup line malfunctionProbable cause
Range of Check
DStarting sequence was completed.
DThe battery voltage is 10 V or more.
Set Condition
DBattery backup line voltage is less than 2 V.DOpen or short circuit in the battery back-up line or
loose connector contact
DMalfunction of engine-ECU <M/T>
DMalfunction of engine-A/T-ECU <A/T>
NOTE: If the engine is started while the ignition-off
current draw connector has been pulled off, the
engine - ECU <M/T> or the engine-A/T-ECU <A/T>
judges that the battery backup line is open, and
illuminates the engine warning lamp and stores this
diagnosis code.
NG
Replace the engine-ECU <M/T> or engine-A/T-ECU <A/T>.
Check the trouble symptoms.
OKNG
Repair
Check the harness wire between the battery and the engine-ECU
<M/T> or engine-A/T-ECU, and repair if necessary.
OKNG
Repair
Check the harness wire between the battery and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>, and repair if necessary.
OK
NG
Repair
MUT-IISelf-Diag Code
Is code No. P1603 set?
Check the following connector:D-117 <M/T>, D-120 <A/T> OKNO
Check the following connectors:E-13, D-27, D-31 <L.H.
drive vehicles>, D-223 <L.H. drive vehicles> YESMeasure at engine-ECU connector D-117 <M/T> or engine-A/T-ECU
connector D-120 <A/T>.
DDisconnect the connector, and measure at the harness
side.
DThe voltage between terminal No.60 <M/T> or 66 <A/T>
and earth
OK:System voltageNG
Intermittent malfunction (Refer to GROUP 00 - Points to Notes
for Intermittent Malfunction).


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GDI -Troubleshooting13A-5
DATA LIST REFERENCE TABLE
The data list has been changed as the engine-ECU and the engine-A/T-ECU have been changed. The
other items are the same as for M/T.
Item
No.Inspection
itemInspection contentsNormal conditionInspec-
tion pro-
cedure
No.Refer-
ence
page
22Crank angle
sensorDEngine: Cranking
DTachometer:
ConnectedCompare the engine
speed readings on
the tachometer and
the MUT-II.AccordCode
No.
P033513A-56*
DEngine: Idling
DIdle position
switch: ONWhen engine
coolant temperature
is - 20_C1,300 - 1,500
r/min
When engine
coolant temperature
is 0_C1,300 - 1,500
r/min
When engine
coolant temperature
is 20_C1,250 - 1,450
r/min
When engine
coolant temperature
is 40_C1,100 - 1,300
r/min
When engine
coolant temperature
is 80_C (more than
four minutes later
after engine has
started)600 - 800 r/min
A1LOxygen
sensorEngine: After having
warmed up. (Air/fuel
mixture is made
leaner when deceler-When at 4,000
r/min, engine is
decelerated200 mV or lessCode
No.
P013013A-28*
leanerwhendeceler
ating, and is made
richer when racing.)Rev the engine.600 - 1000 mV
Engine: After having
warmed up (The
oxygen sensor signal
is used to check the
air/fuel mixture ratio,
and control condition
isalsocheckbythe
Engine is idling
(more than 4
minutes later after
engine has started)Voltage should
alternate between
400 mV or less
and 600 - 1,200
mV (more than 4
minutes after the
enginehasisalso checkbythe
engine-ECU <M/T>
or engine-A/T-ECU
<A/T>.)
2,500 r/min
enginehas
started).
24LVehicle
speed sen-
sorDrive at 40 km/hApproximately 40
km/hCode
No.
P050013A-63*


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GDI -Troubleshooting13A-6
Item
No.Refer-
ence
page Inspec-
tion pro-
cedure
No. Normal condition Inspection contents Inspection
item
81LLearned
valueEngine: Warm, 2,500 r/min without any load
(during closed loop lambda control)- 10 - 10 %Code
No.
P017013A-34*
82LClosed loop
controlEngine: Warm, 2,500 r/min without any load
(during closed loop lambda control)- 25 - 25 %Code
No.
P017013A-34*
87LEngine loadEngine: After having
warmed upIdling (more than 4
minutes later after
the engine has
started)20 - 40 %--
2,500 r/min10 - 30 %
8ALThrottle
position
sensor(1st
DEngine: After hav-
ing warmed up
DIgnitionswitch:ON
Release the
accelerator pedal.0 - 20 %Code
No.
P0120
13A-25*
sensor(1st
channel)
(throttle
valve angle)DIgnition switch:ON
(Engine: stopped)Depress the
accelerator pedal.Increase in
proportion to the
pedal strokeP0120
Depress the
accelerator pedal
fully.80 - 100 %
NOTE
L: will not displayed if service data is selected on the check mode.
*: Refer to the 2001 PAJERO Workshop Manual (Pub.No. PWJE0001)


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GDI -Troubleshooting/On-vehicle Service13A-7
CHECK AT THE ENGINE-ECU TERMINALS
TERMINAL VOLTAGE CHECK CHART <A/T>
Engine-A/T-ECU Connector Terminal Arrangement
The terminals below have been changed as the engine-A/T-ECU has been changed. The other terminals
are the same as before.
Terminal No.Check itemCheck requirements (Engine condition)Normal condition
3Oxygen sensor heat-
er(front)
Engine: Idling0-3V
er(front)
Engine: 3,500 r/minSystem voltage
26Oxygen sensor heat-
er(rear)
Engine: Idling0-3V
er(rear)
Engine: 3,500 r/minSystem voltage
71Oxygen sensor (front)Engine: Warmed up, and then hold the engine
speed at 2,500 r/min (Use a digital voltmeter)0 and 0.8 V alternate.
73Oxygen sensor (rear)DTransmission: 2nd gear
DEngine speed: 3,500 r/min or more
DDriving with the throttle valve widely open0.6 - 1.0 V
Engine-A/T-ECU Harness-side Connector Terminal Arrangement
The terminals below have been changed as the engine-A/T-ECU has been changed. The other terminals
are the same as before.
Terminal No.Check itemStandard value, normal condition (check conditions)
3-41Oxygen sensor heater (front)11 - 1 8Ω(at 20_C)
26 - 41Oxygen sensor heater (rear)11 - 1 8Ω(at 20_C)
ON-VEHICLE SERVICE
OXYGEN SENSOR CHECK
On A/T, a dual oxygen sensor has been adopted. Its service
procedure is the same as for the previous M/T.


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NOTES


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DIESEL FUEL <4D5>
Click on the applicable bookmark to selected the required model year.


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13B-1
DIESEL FUEL
<4D5>
CONTENTS
GENERAL INFORMATION 2..................
SERVICE SPECIFICATIONS 2.................
SPECIAL TOOL 2............................
ON-VEHICLE SERVICE 2.....................
Fuel Injection Timing Check and Adjustment 2...
Engine Idle Speed Check and Adjustment 2......
Evacuation of Water from Fuel Filter 2..........Evacuation of Air from Fuel Line 3..............
Fuel Filter Cartridge Replacement 3.............
Fuel Injection Pump Check 3...................
Boost Compensator Check 4....................
Injection Nozzle Check and Adjustment 4........INJECTION NOZZLE 6.......................
INJECTION PUMP 10........................


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G
EN ER AL IN FO RM ATIO N
T he fu el is dra w n out of th e fu el ta nk by means
o fth e fe ed pum pwhic h is built in to th e fu elin je ctio n
p um p. It th en passe s th ro ugh th e fu el filt e r and
i s fe d to th e in je ctio n pum p.
T he fu elis pre ssu riz e d by th e fe ed pum p, and th is
f u el pre ssu re is co ntr o lle d by th e re gula tin g va lv e
w hic h is built in to th e pum p. Then, th e fu el is
c o m pre sse d by th e plu nger and in je cte d fr o m th e
n ozzle s at hig h pre ssu re in acco rd ance wit h th e
i n je ctio n se quence . E
ngin e sp eed (fu el in je ctio n am ount) co ntr o l is
c a rrie d outb y m eans ofa ce ntr if u gal- ty p e gove rn or
u sin g a fly w eig ht.
F uel in je ctio n tim in g co ntr o l is ca rrie d out by a
h yd ra ulic tim er. The hyd ra ulic tim er opera te s by
t h e fu el pre ssu re in sid e th e pum p ch am ber. This
p re ssu re is co ntr o lle d by th e re gula tin g va lv e .
S ER VIC E SPEC IF IC ATIO NS
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