check engine MITSUBISHI MONTERO 2000 Service Repair Manual
[x] Cancel search | Manufacturer: MITSUBISHI, Model Year: 2000, Model line: MONTERO, Model: MITSUBISHI MONTERO 2000Pages: 1839, PDF Size: 29.19 MB
Page 646 of 1839
DIESEL FUEL <4D5-stepIII>-Troubleshooting13E-36
INSPECTION PROCEDURE 19
A/C condenser fan operating problem
Probable cause
The power transistor inside the engine-ECU turns on and off to control the A/C
condenser fan motor relay.DMalfunction of A/C condenser fan motor relay
DMalfunction of A/C condenser fan motor
DMalfunction of thermostat
DOpen circuit or short-circuit in circuit, or poor
connector contact
DMalfunction of engine-ECU
Check the following connector:D-110
OK
Measure at engine-ECU connector D-110.
DDisconnect the connector and measure at the harness
side.
DCheck the A/C condenser fan condition.
(Ignition switch: ON)
OK:Fan stopped
DVoltage between 7 and the earth
(Ignition switch: ON)
OK:System voltage
DShort out 7 and the earth
(Ignition switch: ON)
OK:A/C condenser fan turnsNGA/C condenser fan motor circuit check
(Refer to the wiring harness configuration diagram.)
OK
MUT-IIData list
02 Engine coolant temperature sensor
OK:When engine is idling after having warmed up, the en-
gine coolant temperature and the MUT-IIdisplay temper-
ature are identicalNGEngine coolant temperature sensor check
(Refer to Code 15 on P.13E-59.)
Check the trouble symptoms.OK
Replace the engine-ECU.NG
Repair
Thermostat checkNG
NGReplace
OK
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Page 647 of 1839
DIESEL FUEL <4D5-stepIII>-Troubleshooting13E-37
INSPECTION PROCEDURE 20
Engine-ECU power supply and earth circuit check
(5) NG
Check the trouble symptoms.
NG
Repair
(2), (3) NGOK
Check the trouble symptoms.
OK
NG
Check the harness between the
engine-ECU and the ignition switch.
Ignition switch check
(4) NG
Check and repair the harness
between the engine-ECU and the
earth.
OK
Check the following connectors:
D-110, D-111, D-113
NG
Replace the engine-ECU.
OK
Check the trouble symptoms.Repair NG
NG
RepairCheck the following connectors:
B-25X, D-128
NG
Check and repair the harness
between the engine-ECU and the
control relay connector.
Check and repair the harness
between the engine-ECU and the
battery.
Check the following connectors:
D-208, D-223, E-13NG
RepairMeasure at D-110, D-111, D-113
engine-ECU connectors.
DDisconnect the connector and
measure at the harness side.
(1) Voltage between 82 and the
earth (Ignition switch: ON)
OK:System voltage
(2) Voltage between 46 and the
earth
OK:System voltage
(3) Voltage between 12, 25 and the
earth (Ignition switch: ON)
OK:System voltage
(When terminal 38 is short
circuited to theearth)
(4) Continuity between 13, 26 and
the earth
OK:Continuity
(5) Voltage 80 and the earth
OK:System voltage(1) NG
OK
INSPECTION PROCEDURE 21
Fuel cut solenoid valve circuit inspection
NG
Check the harness between the
engine-ECU and the fuel cut
solenoid valve connector.
OK
Replace the engine-ECU.
OK
Check the fuel injection pump
assembly connector B-38, and repair
if necessary.
OK
Check the trouble symptoms.
OK
Measure at fuel injection pump
assembly connector B-38.
DDisconnect the connector and
measure at the harness side.
DVoltage between 1 and the earth
(Ignition switch: ON)
OK:System voltageOKCheck the following connector:
D-110NG
Repair
Fuel cut solenoid valve check
(Refer to P.13E-61.)NGReplace the injection pump.
NG
Repair
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Page 648 of 1839
DIESEL FUEL <4D5-stepIII>-Troubleshooting13E-38
INSPECTION PROCEDURE 22
EGR control solenoid valve No. 1 circuit inspection
NG
Check the harness between the
engine-ECU and the EGR control
solenoid valve No. 1 connector, and
repair if necessary.
OK
Check the trouble symptoms.
OK
Measure at EGR control solenoid
valve No. 1 connector B-35.
DDisconnect the connector and
measure at the harness side.
DVoltage between 1 and the earth
(Ignition switch: ON)
OK:System voltage
NG
Check the following connector:
B-35NG
Repair NG
Check the harness between the
control relay and the EGR control
solenoid valve No. 1 connector, and
repair if necessary.
EGR control solenoid valve No. 1
check (Refer to GROUP 17 -
Service Adjustment Procedures.)NG
Replace
OK
Measure at engine-ECU connector
D-110.
DDisconnect the connector and
measure at the harness side.
DVoltage between 9 and the earth
(Ignition switch: ON)
OK:System voltage
NG
Replace the engine-ECU. NGCheck the trouble symptoms.OK
Repair
Check the following connector:
D-110OK
INSPECTION PROCEDURE 23
EGR control solenoid valve No. 2 circuit inspection
NG
Check the harness between the
engine-ECU and the EGR control
solenoid valve No. 2 connector, and
repair if necessary.
OK
Check the trouble symptoms.
OK
Measure at EGR control solenoid
valve No. 2 connector B-34.
DDisconnect the connector and
measure at the harness side.
DVoltage between 1 and the earth
(Ignition switch: ON)
OK:System voltage
NG
Check the following connector:
B-34NG
Repair NG
Check the harness between the
control relay and the EGR control
solenoid valve No. 2 connector, and
repair if necessary.
EGR control solenoid valve No. 2
check (Refer to GROUP 17 -
Service Adjustment Procedures.)NG
Replace
OK
Measure at engine-ECU connector
D-110.
DDisconnect the connector and
measure at the harness side.
DVoltage between 5 and the earth
(Ignition switch: ON)
OK:System voltage
NG
Replace the engine-ECU. NGCheck the trouble symptoms.OK
Repair
Check the following connector:
D-110OK
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Page 649 of 1839
DIESEL FUEL <4D5-stepIII>-Troubleshooting13E-39
INSPECTION PROCEDURE 24
Glow plug relay inspection
NG
Replace the engine-ECU.
OK
Check the trouble symptoms.
OK
Measure at glow plug relay
connector B-42.
DDisconnect the connector and
measure at the harness side.
DVoltage between 1 and the earth
(Ignition switch: ON)
(Engine coolant temperature:
40_C or lower)
OK:System voltage (for 1 - 8 sec-
onds after ignition switch is
turned to ON)NGCheck the following connector:
D-110NG
Repair
Glow plug relay check. (Refer to
GROUP 16 - Glow System.)NG
Replace
Check glow plug relay connector
B-42, and repair if necessary.OK
OK
Check the harness between the
engine-ECU and the glow plug relay
connector.NG
Repair
INSPECTION PROCEDURE 25
A/C switch and A/C relay inspection
Replace the engine-ECU.
OK
Check the trouble symptoms.
Measure at engine-ECU connector
D-110 or D-111.
DDisconnect the connector and
measure at the harness side.
DVoltage between 21 and 32 and
the earth (Ignition switch: ON)
OK:0 - 3 V (A/C switch: OFF)
System voltage (A/C
switch: ON)
DShort out 21 and the earth
(Ignition switch: ON)
(A/C switch: ON)
OK:A/C compressor clutch
turns onOKCheck the following connectors:
D-110, D-111NG
Repair
A/C system check
(Refer to GROUP 54 - Service
Adjustment Procedures.)NGOK
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Page 650 of 1839
DIESEL FUEL <4D5-stepIII>-Troubleshooting13E-40
DATA LIST REFERENCE TABLE
Item
No.Check itemInspection conditionsValue to be
determined
as normalCode No.
or inspec-
tion proce-
dure No.Reference
page
01Boost air
temperatureIgnition switch: ON or
the engine runningWhen the intake air
temperature is - 20_C-20_CCode No.
1613E-12
p
sensor
gg
When the intake air
temperature is 0_C0_C
When the intake air
temperature is 20_C20_C
When the intake air
temperature is 40_C40_C
When the intake air
temperature is 80_C80_C
02Engine
coolant
temperatureIgnition switch: ON or
the engine runningWhen the engine
coolant temperature is
-20_C-20_CCode No.
1513E-12
p
sensorWhen the engine
coolant temperature is
0_C0_C
When the engine
coolant temperature is
20_C20_C
When the engine
coolant temperature is
40_C40_C
When the engine
coolant temperature is
80_C80_C
03BarometricIgnition switch: ONAltitude 0 m101 kPaCode No.
13
13E-11
pressure
sensor
g
Altitude 600 m95 kPa13
sensorAltitude 1,200 m88 kPa
Altitude 1,800 m81 kPa
04BoostDEngine coolant
tt
Altitude 0 m101 kPaCode No.
12
13E-10
pressure
sensor
g
temperature:
80-95_CAltitude 600 m95 kPa12
sensor80-95_C
DLamps, electricalAltitude 1,200 m88 kPaLamps,electrical
cooling fan, and
accessories:OFFAltitude 1,800 m81 kPaaccessories:OFF
DTransmission:Idling81 - 109 kPaDTransmission:
Neutral
DIgnition switch: ONWhen sudden racing is
doneIncreased
05Fuel
temperatureIgnition switch: ON or
the engine runningWhen the fuel
temperature is - 20_C-20_CCode No.
1413E-11
p
sensor
gg
When the fuel
temperature is 0_C0_C
When the fuel
temperature is 20_C20_C
When the fuel
temperature is 40_C40_C
When the fuel
temperature is 80_C80_C
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Page 651 of 1839
DIESEL FUEL <4D5-stepIII>-Troubleshooting13E-41
Item
No.Reference
page Code No.
or inspec-
tion proce-
dure No. Value to be
determined
as normal Inspection conditions Check item
06Vehicle
speed
sensorWhen drivingCompare the engine
speed displayed in the
speed meter with that
in MUT-IIMatchedCode No.
1713E-13
07Pump
speedEngine: CrankingCompare the engine
speed displayed in theMatchedCode No.
1813E-14
speed
sensorEngine: Idling
speeddisplayedinthe
tachometer with that in
MUT-II
18
08Crank angle
sensorEngine: CrankingCompare the engine
speed displayed in theMatchedCode No.
2113E-15
sensor
Engine: Idling
speeddisplayedinthe
tachometer with that in
MUT-II
21
09Accelerator
pedal posi-
tionsensor
Ignition switch: ONAccelerator pedal:
Idling position1,015 - 1,055
mVCode No.
1113E-9
tion sensor
(main)Accelerator pedal:
Fully opened position4,035 - 4,500
mV or higher
10Accelerator
pedal posi-
ti
Ignition switch: ONAccelerator pedal:
Idling position0%Code No.
1113E-9
pp
tion sensor
(main)Accelerator pedal:
Fully opened position99 - 100 %
11System volt-
ageIgnition switch: ONSystem volt-
ageProcedure
No. 2013E-37
13Timing
tl
Engine: After warming
thi
Idling70 - 90 %Code No.
25N
13E-17g
control
valve*1
gg
up the engineWhen engine is
suddenly racedChanges25 or No.
4313E-21
14EGR com-
dl
Engine: After warming
thi
Idling0 - 100 %*2–-
mand value
gg
up the engineWhen engine is
suddenly racedMomentarily
decreases
17Control
sleeve posi-Engine: After warming
up the engineIdling2.1 - 2.5 VCode No.
2613E-18
sleeveposi
tion (target
value)
uptheengine
2,500 r/min (no load)1.8 - 2.2 V
26
18Actual injec-
titi i
Engine: After warming
thi
Idling0.7 - 1.2 V––j
tion timing
gg
up the engineWhen engine is
suddenly racedIncreases
19Injection
ti i
Engine: After warming
thi
Idling0.7 - 1.2 V––j
timing com-
mand value
gg
up the engineWhen engine is
suddenly racedIncreases
21GE actuatorEngine: After warming
uptheengine
Idling0%Code No.
26orNo
13E-18
13E 23upthe engine2,500 r/min18 - 38 %26orNo.
4813E-23
23Control
sleeve posi-Engine: After warming
up the engineIdling2.1 - 2.5 VCode No.
2613E-18
sleeveposi
tion (actual
l)
uptheengine
2,500 r/min (no load)1.8 - 2.2 V
26
(
value)2,500r/min(noload)1.82.2V
24Accelerator
pedal posi-
ti
Ignition switch: ONAccelerator pedal:
Idling position1,015 - 1,055
mVCode No.
2713E-19
pp
tion sensor
(sub)Accelerator pedal:
Fully opened position4,035 - 4,500
mV or higher
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Page 652 of 1839
DIESEL FUEL <4D5-stepIII>-Troubleshooting13E-42
Item
No.Reference
page Code No.
or inspec-
tion proce-
dure No. Value to be
determined
as normal Inspection conditions Check item
25Accelerator
pedal
position
Ignition switch: ONAccelerator pedal:
Idling position0%Code No.
2713E-19
position
sensor (sub)Accelerator pedal:
Fully opened position99 - 100 %
31EGR valve
position
Engine: After warming
uptheengine
Idling under no load2.3 - 3.3 VCode No.
51
13E-25
position
sensor (tar-
get value)upthe engine
Engine is suddenly
racedMomentarily
decreases
(0.3 - 0.7 V)
51
32EGR valve
position
Engine: After warming
uptheengine
Idling under no load2.3 - 3.3 VCode No.
51
13E-25
position
sensor (ac-
tual value)upthe engine
Engine is suddenly
racedMomentarily
decreases
(0.3 - 0.7 V)
51
33Variable
geometry
Engine: After warming
uptheengine
Idling53 - 59 kPaCode No.
52
13E-26
geometry
control pres-
sure sensorupthe engine
Engine is suddenly
racedMomentarily
increases
52
NOTE
*1: The opening degree of the timing control valve is converted into percentage. (0 %: timer non-advanced angle,
100 %: timer maximum advanced angle)
*
2: The opening degree of the EGR solenoid valve is converted into percentage.
Item
No.
Check itemInspection conditionsValue to be
determined
as normalCode No.
or inspec-
tion proce-
dure No.Reference
page
41Idle switchIgnition switch: ON
(check by repeated
acceleratoroperation)
Release the foot from
the accelerator pedal.ONCode No.
2313E-16
y
accelerator operation)Step on the accelerator
pedal slightly.OFF
43A/C switchEngine: Idling (The
A/C compressor
shouldbeinoperation
A/C switch: ONONProcedure
No. 2513E-39
shouldbein operation
when the A/C switch is
“ON”)A/C switch: OFFOFF
44Ignition
ihST
Ignition switch: ONEngine: StopOFF––g
switch-ST
g
Engine: CrankingON
45Ignition
switch-IGIgnition switch: ONON––
46Control
relayIgnition switch: ONON––
47A/C relayEngine: Idling after
warming up the engineA/C switch: OFFOFF (A/C
compressor
clutch not in
operation)Procedure
No. 2513E-39
A/C switch: ONON (A/C
compressor
clutch in
operation)
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Page 653 of 1839
DIESEL FUEL <4D5-stepIII>-Troubleshooting13E-43
Item
No.Check itemInspection conditionsValue to be
determined
as normalCode No.
or inspec-
tion proce-
dure No.Reference
page
50Condenser
fan relayIgnition switch: ONA/C switch: OFF
(engine coolant
temperature at 102_C
or higher)
A/C switch: ON
(engine coolant
temperature at 102_C
or higher, or outside
temperature at 15_C
or higher)ONProcedure
No. 1913E-36
Condenser
fan relayIgnition switch: ONA/C switch: OFF
(engine coolant
temperature at 95_C
or lower)
A/C switch: ON
(engine coolant
temperature at 95_Cor
lower, or outside
temperature at 15_C
or lower)OFF
52Glow plug
relayDIgnition switch:
ONRelay not drivenOFFProcedure
No. 2413E-39
relayON
DSelect actuator
test item No. 02.Relay is forcibly drivenON
No.24
53Throttle
solenoid
Ignition switch: ON (Engine stops)OFFCode No.
41
13E-20
solenoid
valveEngine: main sensor or actuator is failedON41
55Engine
warningDIgnition switch:
ON
S
Engine warning lamp
offOFFProcedure
No. 313E-30
g
lampDSelect actuator
test item No. 16.Engine warning lamp is
forced onON
56Glow lampDIgnition switch:
ONGlow lamp offOFF––
ON
DSelect actuator
test item No. 15.Glow lamp is forced onON
60Fuel cut
relay
DIgnition switch: ON
DSelectactuator
Relay not drivenOFFProcedure
No21
13E-37
relayDSelectactuator
test item No. 27.Relay is forcibly drivenONNo.21
62AT/MT
switchIgnition switch: ONVehicles with M/TM/T––
73EGR control
solenoidEngine: After warming
up the engineIdling under no load
(stable condition)OFFProcedure
No. 2213E-38
valve No. 1
pg
Engine is suddenly
raced (EGR amount
decreasing)OFF
Engine is suddenly
raced (EGR amount
increasing)ON (momen-
tarily)
74EGR control
lid
Engine: After warming
hi
Idling (stable condition)ONProcedure
N
13E-38
solenoid
valve No. 2
gg
up the engineWhen engine is sud-
denly raced (EGR
amount decreasing)OFF (mo-
mentarily)No. 23
When engine is sud-
denly raced (EGR
amount increasing)ON
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Page 654 of 1839
DIESEL FUEL <4D5-stepIII>-Troubleshooting13E-44
ACTUATOR TEST TABLE
Item
No.Check itemDrive Con-
tentsInspection
conditionsValue to be determined
as normalCode No.
or inspec-
tion proce-
dure No.Reference
page
02Glow plug relayTurning the
relayfrom
Ignition switch:
ON
Battery charge is
energizedtotheglow
Procedure
No24
13E-39
relayfrom
OFF to ON or
fromONto
ONenergizedtotheglow
plug when the glow
plugrelayisON
No.24
fromONto
OFFplug relayisON.
03A/C compressor
relay
Turning the
relayfrom
Ignition switch:
ON
The A/C compressor
clutchmakesan
Procedure
No25
13E-39
relayrelayfrom
OFF to ON or
fromONto
ONclutchmakes an
audible sound.No.25
fromONto
OFF
11Timing control
valveTurn the
timing control
valve to ONDIgnition
switch: ON
DEngine:
Idlin
g
Makes an audible
soundCode No.
4313E-21
12Turn the
timing control
valve to OFF
Idling
DTimer piston
position
sensor:
Normal
15Glow lampTurn the glow
lamp on or offIgnition switch:
ONThe glow lamp turns
on.––
16Warning lampTurn the
warning lamp
on or offIgnition switch:
ONThe warning lamp
turns on.Procedure
No. 3, 413E-30
22Condenser fan
relayTurning the
relay from
OFF to ON or
from ON to
OFFIgnition switch:
ONThe condenser fan
rotates.Procedure
No. 1913E-36
23Throttle solenoid
valveTurn the
solenoid
valve from
OFF to ON or
from ON to
OFFDIgnition
switch: ON
DVehicle
speed:
0 km/h
DEngine
speed:
1,000 r/min
or lowerMakes an audible
soundCode No.
4113E-20
25GE actuatorTurn the GE
actuator to
ONDIgnition
switch: ON
DEngine
speed:
0 r/min orMeasure the wave
pattern between
engine-ECU connec-
tor terminals No. 1
and No. 15 using anCode No.
4813E-23
26Turn the GE
actuator to
OFF
0r/minor
lower
DControl
sleeve posi-
tion sensor:
Normal
andNo.15usingan
analyzer and check
the change in the duty
ratio.
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Page 655 of 1839
DIESEL FUEL <4D5-stepIII>-Troubleshooting13E-45
Item
No.Reference
page Code No.
or inspec-
tion proce-
dure No. Value to be determined
as normal Inspection
conditions Drive Con-
tents Check item
27Fuel cut solenoid
valveTurn the
solenoid
valve from
OFF to ON or
from ON to
OFF.DIgnition
switch: ON
DVehicle
speed:
0 km/hMakes an audible
sound––
34Middle position
of GE actuatorHold the
injection
governor in
its middle
position.DIgnition
switch: ONWhen the crankshaft
is turned clockwise
during the adjustment
of the injection timing,
the injection pipes
spray out fuel.Code No.
4813E-23
35Variable
geometry
solenoid valveTurn the
solenoid
valve to ONIgnition switch:
ONMakes an audible
soundCode No.
4913E-24
36Turn the
solenoid
valve to OFFEngine: IdlingOperating sound and
vibration, which
accompany with the
duty activation, cease.
37EGR control
solenoid valve
No. 1Turn the
solenoid
valve from
OFF to ON
from ON to
OFFIgnition switch:
ONMakes an audible
soundProcedure
No. 2213E-38
38EGR control
solenoid valve
No. 2Turn the
solenoid
valve from
OFF to ON
from ON to
OFFIgnition switch:
ONMakes an audible
soundProcedure
No. 2313E-38
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