2000 MITSUBISHI MONTERO check engine

MANUAL TRANSMISSION -Troubleshooting 22-5
DATA LIST REFERENCE TABLE
Data
list No.Check itemCheck conditionsNormal condition
1Lever positionEngine: StoppedAccelerator pedal: Fully closed800 - 1,000 mV
sensor (LPS)
<4D5>Selector lever position:
PAccelerator pedal: DepressedGradually increases from
the above value.
Accelerator pedal: Fully open3,700 - 4,900 mV
CHECK AT TRANSFER-ECU TERMINAL
Ter-
minal
No.Check itemCheck conditionsStandard value
5Lever position sensorAccelerator pedal: Fully closed (engine stopped)0.8 - 1.0 V
(LPS) <4D5>Accelerator pedal: Fully open (engine stopped)3.7 - 4.9 V


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MANUAL TRANSMISSION -Gneral/Troubleshooting 22-1
GROUP 22
MANUAL TRANSMISSION
GENERAL
OUTLINE OF CHANGE
With additional vehicle with Emission Regulation Step III compatible 4D5 engine, the service procedure
different from service adjustment procedure of the vehicle with 4D5 engine has been established.
TROUBLESHOOTING
INSPECTION CHART FOR DIAGNOSIS CODE
Diagnosis
codeDiagnosis itemReference page
21Accelerator pedal position sensor (APS) system
<4D5>Open circuit/Malfunc-
tion of sensor22-1
INSPECTION PROCEDURE FOR DIAGNOSIS CODE
Code No.21 Accelerator pedal position sensor (APS)
system <4D5>Probable cause
Code No.21 is output to indicate an open circuit in the APS or an incorrect
adjustment when the APS output voltage drops below 0.2 V while the engine is
idling.DMalfunction of APS
DMalfunction of harness or connector
DMalfunction of transfer-ECU
DMalfunction of engine-ECU
NGNG
NG
Repair
MUT-IIData List
DNo. 1 APS
OK:Refer to P.22-2 (Data List
Reference Table).
NG
ReplaceAPS check
OK
NG
Repair
OK
Check the following connector:
D-135
OK
OK
Check the following connector:D-112
Repair
NG
Repair
NG
Repair
OK
DCheck the harness between the
APS and the engine-ECU.
OK
Check the following connectors:
D-135, D-112
Measure at engine-ECU connector
D-112.
DMeasure at ECU terminal.
DIgnition switch: ON
DVoltage between terminal 60 and
earth
OK:4.8 - 5.2 V
NGNG
NGCheck the trouble symptoms.Replace the engine-ECU.
OK
Measure at APS connector D-135
DDisconnect the connector and
measure at the harness side.
DVoltage between terminal 8 and
earth
(Ignition switch: ON)
OK:4.8 - 5.2 V
To the next page
Transient malfunction
(Refer to GROUP 00 - Points to
Note for Transient Malfunctions.)
OK
Replace the engine-ECU.


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MANUAL TRANSMISSION -Troubleshooting 22-2
OKOK OK
NG
NG
NG(1), (2)
NG
Check the following connector:D-112Repair OK
DCheck the harness between the
APS and the engine-ECU, and
repair if necessary.OK
Measure at transfer-ECU connector
E-105
DMeasure at ECU terminals.
DIgnition switch: ON
DVoltage between terminal 5 and
earth
OK:Fully close the accelerator
985 - 1,085 mV
fully open the accelerator
4,000 mV or more
Check the following connector:E-105
Check the trouble symptoms.OK
Check the following connectors:
E-105, E-113 NG
Replace the transfer-ECU. OK
NGRepair
Check the harness between the APS
and the transfer-ECU, and repair if
necessary.
Check the harness between the APS
and the transfer-ECU, and repair if
necessary.
From the previous page
(3) NG
Measure at APS connector D-135.
DUse the test harness to connect
only terminals 6, 7 and 8, and
measure at the pickup harness.
DIgnition switch: ON
(1) Voltage between terminal 7 and
earth
OK:0.5 V or less
(2) Voltage between terminal 8 and
earth
OK:4.8 - 5.2 V
(3) Voltage between terminal 6 and
earth
OK:Fully close the accelerator
985 - 1,085 mV
fully open the accelerator
4,000 mV or more
APS adjustment
Check the following connectors:
E-113, E-105
Repair
DATA LIST REFERENCE TABLE
Data
list No.Check itemCheck conditionsNormal condition
1Accelerator ped-
alpositionsen
Engine: Stopped
Sllii
Accelerator pedal: Fully closed985 - 1,085 mV
al position sen-
sor (APS)
<4D5>Selector lever position:
PAccelerator pedal: DepressedGradually increases from
the above value.
<4D5>
Accelerator pedal: Fully open4,000 mV or more
CHECK AT TRANSFER-ECU TERMINAL
Ter-
minal
No.Check itemCheck conditionsStandard value
5Accelerator pedal position
(APS)4D5
Accelerator pedal: Fully closed (engine stopped)0.985 - 1.085 Vpp
sensor (APS) <4D5>Accelerator pedal: Fully open (engine stopped)4.0 V or more


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AUTOMATIC TRANSMISSION -Troubleshooting AUTOMATIC TRANSMISSION -Troubleshooting 23-5
ROAD TEST
No.Pre-test/opera-
tion conditionsTest/operationJudgment valueCheck itemDiag-
nosis
code
No.Inspection pro-
cedure if there is
an abnormality
1Ignition switch:
OFFIgnition switch
(1) ONData List No. 54
(1) 10 - 12 VA/T control
relay54A/T control relay
system
2Ignition switch:
ON
Engine:Stop
Selector lever
position: PSelector lever posi-
tion
(1) P
(2) R
(3) N
(4) DData List No. 61
(1) P
(2) R
(3) N
(4) DInhibitor
switch-Inhibitor switch
system
Selector lever opera-
tion
(1) D (1st)
(2) Sports mode se-
lected (1st)
(3) Lever moved toData List
No.67 No.68 No.69
(1)OFF OFF OFF
(2)ON OFF OFF
(3)ON ON OFF
(4)ON OFF ON
Select switch
Upshift
switch
Downshift
switch-Sports mode
switch system
upshift position
and held (2nd)
(4) Lever moved to
downshift
position and held
(1st)Shift indicator lamp
(1) D and 1
illuminate
(2) Only 1
illuminates
(3) Only 2
illuminates
(4) Only 1
illuminates
Accelerator pedal
(1) Fully closed
(2) Depressed
(3) Fully openedData List No. 11
(1) 985 - 1,085 mV
(2) Gradually in-
creases from (1)
(3) 4,000 mV or
moreAPS11
12
14APS system
Data list No.25
(1) OFF
(2) ONWide open
throttle
switch25Wide open
throttle switch
system
2Ignition switch:
ON
Engine: StopBrake pedal
(1) Depressed
(2) ReleasedData List No. 26
(1) ON
(2) OFFStop lamp
switch26Stop lamp
switch system
Selector lever
position: PTransfer shift lever
position
(1) Except for 4LLc
(2) 4LLcData List No. 75
(1) OFF
(2) ON4LLc switch-4LLc switch sys-
tem


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AUTOMATIC TRANSMISSION -Troubleshooting 23-6
No.Inspection pro-
cedure if there is
an abnormality Diag-
nosis
code
No. Check item Judgment value Test/operation Pre-test/opera-
tion conditions
3Ignition switch:
START
Engine: StoppedStarting test at P or N
positionStarting should be
possibleStarting pos-
sible/not
possible-Starting not
possible
4Driving after en-
gine has warmed
upDrive for 15 minutes
or more until the A/T
fluid temperature
rises to 70 - 80_
C.Data list No.15
Gradually rises to 70
-80_
CA/T fluid tem-
perature
sensor15A/T fluid temper-
ature sensor sys-
tem
5Engine: Idling
Selector lever
position: NBrake pedal (re-test)
(1) Depressed
(2) ReleasedData List No. 26
(1) ON
(2) OFFStop lamp
switch26Stop lamp switch
system
A/C switch
(1) ON
(2) OFFData List No. 65
(1) ON
(2) OFFDual pres-
sure switch-Dual pressure
switch system
Accelerator pedal
(1) Fully closed
(2) ApplyData List No. 21
(1) The engine
speed displayed
on the tachome-
ter is identical to
the engine
speed displayed
on MUT-II.
(2) Gradually in-
creases from (1)Crank angle
sensor
<6G7>
Engine
speed sen-
sor
<4M4>21Crank angle sen-
sor system
<6G7>
Engine speed
sensor system
<4M4>
Data List
No.73 <6G7>
No.76 <4M4>
(2) Data changes.Communica-
tion with en-
gine-ECU51Serial commu-
nication system
Selector lever posi-
tionNo abnormal shock
during shiftingMalfunction
when start--Engine stalls dur-
ing shifting
(1) N to D
(2) N to RWithin 2 seconds of
time laging off-N-to-D shocks,
large time lag
-N-to-R shocks,
large time lag
-N-to-D, N-to-R
shocks, large
time lag
Driving not
possible-Does not move
forward
-Does not reverse
-Does not move
(forward or re-
verse)


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AUTOMATIC TRANSMISSION -Troubleshooting 23-7
No.Inspection pro-
cedure if there is
an abnormality Diag-
nosis
code
No. Check item Judgment value Test/operation Pre-test/opera-
tion conditions
6Selector lever
position:
Sports mode
(Must be done on
a level and
straight road.)Selector lever posi-
tion and engine
(1) Idling in 1st
(Vehicle
stopped)
(2) Driving at aData List No. 63
(2) 1st
(3) 2nd
(4) 3rd
(5) 4th
(6) 5thShift condi-
tion--
constant speed
of 10 km/h in 1st
(3) Driving at a
constant speed
of 30 km/h in 2nd
(4) Driving at a
constant speedData List No. 31
(2) 0%
(3) 100%
(4) 100%
(5) 100%
(6) 100%Low & re-
verse sole-
noid valve
(LR solenoid
valve)31LR solenoid
valve system
constant speed
of 50 km/h in 3rd
(5) Driving at a
constant speed
of 50 km/h in 4th
(6) Driving at a
constant speed
Data List No. 32
(2) 0%
(3) 0%
(4) 0%
(5) 0%
(6) 100%Underdrive
solenoid
valve (UD
solenoid
valve)32UD solenoid
valve system
of 70 km/h in 5th
(Each condition
should be main-
tained for 10 seconds
or more)
Data List No. 33
(2) 100%
(3) 0%
(4) 100%
(5) 100%
(6) 0%Second sole-
noid valve
(2ND sole-
noid valve)332nd solenoid
valve system
Data List No. 34
(2) 100% (5) 0%
(3) 100% (6) 0%
(4) 0%Overdrive
solenoid
valve (OD
solenoid
valve)34OD solenoid
valve system
Data List No. 35
(2) 0% (5) 100%
(3) 0% (6) 100%
(4) 0%Reduction
solenoid
valve (RED
solenoid
valve)35RED solenoid
valve system
Data List No. 29
(1) 0 km/h
(5) 50 km/hVehicle
speed sen-
sor-Vehicle speed
sensor system
Data List No. 22
(5) 1,300 - 1,600
r/minInput shaft
speed sen-
sor22Input shaft
speed sensor
system
Data List No. 23
(5) 1,300 - 1,600
r/minOutput shaft
speed sen-
sor23Output shaft
sensor system
Selector lever posi-
tion and engine
(1) Driving at 30
km/h in 2 range,Data List No. 36
(1) 70% - 90% to
0%
(2) 70% - 90%Damper
clutch con-
trol solenoid
valve (DCC36
52DCC solenoid
valve system
then fully close
the accelerator.
(2) Driving at a
constant speed
of 50 km/h in 4thData List No. 52
(1) - 300 - - 100
r/min or 100 -
300 r/min
(2) - 10 - 10 r/minsolenoid
valve)


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AUTOMATIC TRANSMISSION -Troubleshooting 23-8
No.Inspection pro-
cedure if there is
an abnormality Diag-
nosis
code
No. Check item Judgment value Test/operation Pre-test/opera-
tion conditions
7Suspends the
INVECS-IIfunc-Use the MUT-IIto
monitor data list Nos.For (1), (2) and (3),
the output shaftProblem dur-
ing shifting-Shocks, engine
racing
tion using MUT-II11, 23 and 63.speed (vehicleIncorrect-All pointsSelector level
position:D(1) Accelerate to 5th
gear at an APSspeed) should be
identical, and thereshift points-Some points
(Must be done on
a level andgear at an APS
output of 1.5 V
(opening angleshould be no abnor-
mal shocks. For (4),No shifting-No diagnosis
codes
straight road.)30%).
(2) Slowly deceler-
ate and stop.(5) and (6), down-
shifting should occur
immediately after
22Input shaft speed
sensor system
ate and stop.
(3) Accelerate to 5th
gear at an APSthe operation is car-
ried out.23Output shaft sen-
sor system
output of 2.5 V
(opening angle
50%).No shifting
from 1st to31LR solenoid
valve system
50%).
(4) At 60 km/h in 5th,
select Sports2nd, or no
shifting from332nd solenoid
valve system
mode and shift
down to 4th.
(5) At 40 km/h in 4th,
select Sports2nd to 1st411st without
completion of
shifting
select Sports
mode and shift
down to 3rd.
(6) At 20 km/h in 3rd,
422nd without
completion of
shifting
shift down to 2nd.
(7) At 20 km/h in
2nd, shift downNo shifting
from 2nd to332nd solenoid
valve system
2nd, shift down
to 1st.3rd, or no
shifting from34OD solenoid
valve system
3rd to 2nd422nd without
completion of
shifting
433rd without
completion of
shifting
No shifting
from 3rd to31LR solenoid
valve system
4th, or no
shifting from35RED solenoid
valve system
4th to 3rd433rd without
completion of
shifting
444th without
completion of
shifting
No shifting
from 4th to32UD solenoid
valve system
5th, or no
shifting from332nd solenoid
valve system
5th to 4th444th without
completion of
shifting
455th without
completion of
shifting


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AUTOMATIC TRANSMISSION -Troubleshooting 23-13
INSPECTION PROCEDURES CLASSIFIED BY DIAGNOSIS CODE
Code No. 11 Accelerator pedal position sensor (APS)
short-circuit systemProbable cause
If the APS output during idling is 4.8 V or higher, it is judged that there is
excessiveoutput, and code No. 11 is output.DMalfunction of APS
DMalfunction of harness or connector
DMalfunction of engine-A/T-ECU <6G7>
DMalfunction of A/T-ECU<4M4>
DMalfunction of engine-ECU <4M4>
NG
NG
NG
NG Replace
(1)NGNG
Repair
APS single part check
(Refer to GROUP 13 - On-vehicle
Service.)
Check the following connector:D-135
MUT-
IIData List
DNo.11 APS
OK:Refer to P.23-61 (Data List
Chart).
Repair
Check the following connectors:
<6G7> D-120,<4M4> D-112
Repair Repair
Transient malfunction
(Refer to GROUP 00 - Points to
Note for Transient Malfunctions.) OK
Measure at APS connector D-135
DDisconnect the connector and
measure at the harness side.
(1) <6G7> Resistance between
terminal 1 and earth
<4M4>Resistance between
terminal 7 and earth
OK:2
Wor less
(2) <6G7> Voltage between terminal
2 and earth
<4M4> Voltage between terminal
8 and earth
(Ignition switch: ON)
OK:4.8 - 5.2 V
DCheck the harness between the
APS and the engine-A/T-ECU.
<6G7>
DCheck the harness between the
APS and the engine-ECU. <4M4>
OK
OK
Replace the engine-A/T-ECU or
engine-ECU.
(2)NG
OK
OKCheck the following connectors:
<6G7> D-121,<4M4>D-108
Check the trouble symptoms.OK
APS adjustment
(Refer to GROUP 13 - On-vehicle
Service.)
Check the following connectors:
<6G7> D-121,<4M4>D-108 NG
OK
Replace the engine-A/T-ECU or
A/T-ECU. OK OK OKNG
NGRepair Repair
DCheck the harness between the
APS and the engine-A/T-ECU,
and repair if necessary. <6G7>
DCheck the harness between the
APS and the engine-ECU, and
repair if necessary.<4M4> NG NG
NGCheck the trouble symptoms.
Measure at engine-A/T-ECU
connector D-121 <6G7>, or at
A/T-ECU connector D-107 <4M4>.
DMeasure at the ECU terminals
DIgnition switch: ON
D<6G7> Voltage between terminal
95 and earth
D<4M4> Voltage between terminal
45 and earth
OK:Fully close the accelerator
985 - 1,085 mV
fullyopen the accelerator
4,000 mV or more
DCheck the harness between the
APS and the engine-A/T-ECU,
and repair if necessary. <6G7>
DCheck the harness between the
APS and the A/T-ECU, and
repair if necessary. <6G7>
NG
Check the following connectors:
<6G7> D-120,<4M4> D-112


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