2000 MITSUBISHI MONTERO fuel pump

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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DIESEL FUEL <4D5-stepIII>-Troubleshooting13E-47
Terminal
No.Normal condition: Inspection conditions (engine status) Check item
21A/C relayA/C switch: OFF→ONSystem voltage→0-1
V
31Idle switchIgnition switch: ONRelease the foot from the
accelerator pedal.0-1V
Step on the accelerator
pedal slightly3 V or higher
32A/C switchA/C in operation (compressor in operation)System voltage
36Selector switch
between A/T and M/TIgnition switch: ONSystem voltage (M/T)
46Control relayIgnition switch: ON0-1V
Ignition switch: ON→OFF (in about 8 seconds)System voltage
51Pump speed sensorEngine: Idling (Use a digital voltage meter to check.)0V↔5V
(repeat the change)
55Accelerator pedal
position sensor (sub)Ignition switch: ONAccelerator pedal: Idling
position0.9 - 1.1 V
Accelerator pedal: Fully
opened position3.7 V or higher
60Sensor power supplyIgnition switch: ON4.6 - 5.4 V
71Ignition switch-STEngine: Cranking8 V or higher
80Back-up power supplyIgnition switch: OFFSystem voltage
81Power supply to accel-
erator pedal position
sensor (main)Ignition switch: ON4.6 - 5.4 V
82Ignition switch-IGIgnition switch: ONSystem voltage
83Engine coolant tem-
perature sensorIgnition switch: ONEngine coolant
temperature: 0_C3.7 - 4.3 V
Engine coolant
temperature: 20_C2.8 - 3.4 V
Engine coolant
temperature: 40_C1.9 - 2.5 V
Engine coolant
temperature: 80_C0.6 - 1.2 V
84Accelerator pedal posi-
tion sensor (main)Ignition switch: ONAccelerator pedal: Idling
position0.9 - 1.1 V
Accelerator pedal: Fully
opened position3.7 V or higher
85Boost pressure sensorIgnition switch: ON (101 kPa)1.0 - 1.4 V
86Vehicle speed sensorDIgnition switch: ON
DMove the vehicle forward slowly0V↔8 - 12 V
(repeat the change)
87Fuel temperature sen-
sor
Ignition switch: ONFuel temperature: 0_C3.2 - 3.6 V
sorFuel temperature: 20_C2.3 - 2.7 V
Fuel temperature: 40_C1.5 - 1.9 V
Fuel temperature: 80_C0.4 - 0.8 V


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INTAKE AND EXHAUST -General Information/Service Specifications/Sealant15-3
At starting and driving at low speed, the duty control
value of the variable geometry solenoid valve is
increased to apply the vacuum pressure of the
vacuum pump to the variable geometry actuator.
Applying the vacuum pressure to the variable
geometry actuator pulls the actuator rod so that
it can move towards the direction of closing the
variable nozzle of the variable geometry
turbocharger. As closing the nozzle reduces the
exhaust gas mass, the speed of exhaust gas flow
will be increased and efficiency will be improved.
Since the characteristic of boost pressure becomes
a low speed type, boost pressure will suddenly
rise from low speed.
At driving at high speed, the duty control value
of the variable geometry solenoid valve is
decreased to reduce the vacuum pressure from
the vacuum pump so that the actuator rod can
return to the deactivated status and move towards
the direction of opening the nozzle of the variable
geometry turbocharger.Opening the nozzle allows the characteristic of
boost pressure to become a high speed type so
that the appropriate boost pressure can be
maintained.
Therefore, boost pressure can be controlled by
appropriate duty control of the variable geometry
solenoid valve. The engine-ECU calculates the
correct boost pressure based on the engine speed
and fuel injection amount. Furthermore, the duty
control of the variable geometry solenoid valve is
given feedback of the signals from the variable
geometry control pressure sensor and the boost
pressure sensor so that the variable nozzle opening
angle of the variable geometry turbocharger can
be quickly adjusted to obtain the desired boost
pressure.
SERVICE SPECIFICATIONS
ItemsStandard value
Variable geometry actuator activation vacuum
(Approximately 1 mm stroke) kPaApproximately 10.5 - 12.5
Variable geometry solenoid valve coil resistance
(at 20°C)Ω29 - 35
SEALANT
ItemSpecified sealantRemarks
Thread of the intake manifold mounting
bolts3M Stud Locking No.4170 or equivalentAnaerobic sealant


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AUTOMATIC TRANSMISSION -Troubleshooting 23-49
Inspection procedure 2
Starting not possible
Probable cause
If the enginewill not start when the selector lever is at the P or N position, the
cause is probably a malfunction of the inhibitor switch system, the transmission
control cable assembly, theenginesystem, the torque converter or the oil pump.DMalfunction of inhibitor switch system
DMalfunction of transmission control cable assembly
DMalfunction of enginesystem
DMalfunction of torque converter
DMalfunction of oil pump
DMalfunction of engine-A/T-ECU <6G7>
DMalfunction of A/T-ECU<4M4>
LRefer to the Transmission Workshop Manual.
NG
Inspection Procedure 16: Inhibitor switch system check (Refer
to P.23-58.)NG
Repair or replace
OK
Torque converter check
DCheck for incorrect installation (inserted at an angle, etc.)
or damagedsplines.NGIf repair is possible, repair the damaged part.
If repair is not possible because the splines aredamaged,
replace the torque converter assembly.
OK
Replace the oil pumpassembly.
L
(The oilpump cannot be disassembled.)
Engine system check
DControl system, ignition system, fuel system, vehicle bodyNG
Repair
OK
Transmission control cable assembly checkNG
Repair OK
Check the trouble symptoms.Replace the engine-A/T-ECU or A/T-ECU.
Inspection procedure 3
Does not move forward
Probable cause
If the vehicle does not move forward when theengine is idling and theselector
lever is moved from N to D, 3, 2 or L, or if it is shifted to 1st or 2nd in Sports
mode, the cause is probably a problem with line pressure, or a malfunction of
the UD clutch or valve body.DAbnormal line pressure
DMalfunction of UD solenoid valve
DMalfunction of UD clutch system
DMalfunction of valve body
DMalfunction of engine-A/T-ECU <6G7>
DMalfunction of A/T-ECU<4M4>
LRefer to the Transmission Workshop Manual.
MUT-
IIActuator Test
DNo.2 UD solenoid valve
OK:Sound of operation can be heardNGReplace the solenoid valve.
L
OK
Fluid pressure test (Refer to P.23-106.)
DMeasure the fluid pressure at each element in 1st in
Sportsmode
Standard value:Refer to P.23-106.NGDisassemble, clean and re-assemble the valve body.
L
DMake sure that the mounting bolts are not loose and that
the O-ring and valve body are notdamaged or positioned
incorrectly.
DIf the extent of thedamagelooks too bad for repairs to be
carried out, replace the valve body assembly.
OK
UD clutch system check
DRemove the transmission assembly, the valve body cover
and the valve body.
DBlow air through the UD clutch oilhole in the transmission
case, and check that the piston operates to maintain
pressure.
UD clutch check
L
DCheck for a problem such as burnt facing, poor piston
sealing or interference with the retainer.OKCheck the trouble symptoms. NG
Replace the engine-A/T-ECU or A/T-ECU.NG


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AUTOMATIC TRANSMISSION -Troubleshooting AUTOMATIC TRANSMISSION -Troubleshooting 23-51
Inspection procedure 5
Does not move (forward or reverse)
Probable cause
If the vehicle does not move forward or reverse when the selector lever is
moved to any position while the engine is idling, thecause is probably a
problem with line pressure or a malfunction of the oil pumps and valve bodies in
the power train.DAbnormal line pressure
DMalfunction of power train components
DMalfunction of oil pump
DMalfunction of valve body
DMalfunction of engine-A/T-ECU <6G7>
DMalfunction of A/T-ECU<4M4>
LRefer to the Transmission Workshop Manual.
Fluid pressure test (Refer to P.23-106.)
DMeasure the fluid pressure at each element in 1st, 2nd
and reverse.
Standard value:Refer to P.23-106.OKCheck the power train components
L
DDisassemble the transmission and check the condition of
components such as the planetary carrier, output shaft and
differential.
NG
Replace the oil pumpassembly.
L
(The oilpump cannot be disassembled.)
Disassemble, clean and re-assemble the valve body.
L
DMake sure that the mounting bolts are not loose and that
the O-ring and valve body are notdamaged or positioned
incorrectly.
DIf the extent of thedamagelooks too bad for repairs to be
carried out, replace the valve body assembly.NG
NG
Check the trouble symptoms.
Replace the engine-A/T-ECU or A/T-ECU.
Inspection procedure 6
Engine stalls during shifting
Probable cause
If the enginestalls when the selector lever is moved from N to D or R while the
engine is idling, thecause is probably a malfunction of theenginesystem, DCC
solenoid valve, valve body, or torque converter (damper clutch).DMalfunction of enginesystem
DMalfunction of DCC solenoid valve
DMalfunction of valve body
DMalfunction of torque converter (malfunction of
damper clutch)
DMalfunction of engine-A/T-ECU <6G7>
DMalfunction of A/T-ECU<4M4>
LRefer to the Transmission Workshop Manual.
Engine system check
DControl system, ignition system, fuel system, vehicle bodyNG
Repair or replace
OK
Replace the DCC solenoid valve.
L
Disassemble, clean and re-assemble the valve body.
L
DMake sure that the mounting bolts are not loose and that
the O-ring and valve body are notdamaged or positioned
incorrectly.
DIf the extent of thedamagelooks too bad for repairs to be
carried out, replace the valve body assembly.NGReplace the torque converter assembly.
Check the trouble symptoms.
Replace the engine-A/T-ECU or A/T-ECU.NG


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