2000 MITSUBISHI MONTERO brake

ENGINE AND EMISSION CONTROL -Auto-cruise Control System17-21
Inspection Procedure 2
Even if brake pedal is depressed, auto-cruise control is
not cancelled.
Probable cause
The cause is probably a malfunction of stoplampswitch or a malfunction of stop
lampcircuit.DMalfunction of the stoplampswitch
DMalfunction of the connector
DMalfunction of the harness
DMalfunction of the engine-ECU
RepairIs the stoplampswitch installed correctly?NO
YES
Follow the INSPECTIONPROCEDURE FOR DIAGNOSIS CODE
No. 22 - Stoplampswitch system. (Refer to P.17-14.)
Inspection Procedure 3
Even if clutch pedal is depressed, auto-cruise control is
not cancelled.
Probable cause
The cause is probably a malfunction of clutch switch or clutch switch circuit.DMalfunction of the clutch switch
DMalfunction of the connector
DMalfunction of the harness
DMalfunction of the engine-ECU
Clutch switch check (Refer to GROUP 21.)NG
Replace
OK
Measure at clutch switch connector D-137.
DDisconnect the connector and measure at the harness side.
DContinuity between terminal 1 and body earth
OK:ContinuityNGCheck the following connector:D-137
NG
Repair OK
Check trouble symptom.
OK
Check trouble symptom.
OK
Check the following connectors:
D-111, E-10, D-26, D-137
D-111, E-10, D-124, D-137 NG
RepairNG
Check the harness between the clutch switch and body earth,
and repair if necessary.
NG
Check the harness between the throttle valve controller and clutch
switch.
NG
Replace the engine-ECU. OKCheck trouble symptom.NG
Repair


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ENGINE AND EMISSION CONTROL -Auto-cruise Control System17-25
DATA LIST REFERENCE TABLE
For the data, which is input to the engine-ECU
<6G7-M/T, 4M4>, engine-A/T-ECU <6G7-A/T> andthrottle valve controller <6G7>, the following items
can be read out by using the MUT-II
.
HOW TO READ OUT DATA LIST
1. Connect the MUT-II
to the 16-pin diagnosis
connector.
Caution
Turn off the ignition switch befor connecting
and disconnecting the MUT-II
.2. Turn the ignition switch to “ON” position.
3. Select “auto-cruise control” on the MUT-II
menu, and then read out the data list.
<6G7>
Terminal
No.Check itemCheck conditionsNormal condition
01Auto-cruiseMAINMAIN switch: ONON
control
switchMAIN switch: OFFOFF
02SETMAIN switch:SET switch: ONON
(COAST)ONSET switch: OFFOFF
03RESUMERESUME switch: ONON
(ACCEL)RESUME switch: OFFOFF
04CANCELCANCEL switch: ONON
CANCEL switch: OFFOFF
05Stop lamp switchBrake pedal: DepressedON
(for stop lamp circuit)Brake pedal: ReleasedOFF
06Stop lamp switchBrake pedal: DepressedOFF
(for auto-cruise control
circuit)
Brake pedal: ReleasedON
07Clutch switchClutch pedal: DepressedON
Brake pedal: ReleasedOFF
Inhibitor switchSelector lever: “N“, “P” positionON
Selector lever: Other than “N“, “P” positionOFF
08Accelerator switchAccelerator pedal: ReleasedON
(Idle position switch)Accelerator pedal: DepressedOFF
09Auto-cruise controlAuto-cruise control system: ActivatedON
systemAuto-cruise control system: Not activatedOFF
10Vehicle speed sensorRoad test the vehicleThe speedometer and
the MUT-IIdisplay the
same value.


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ENGINE AND EMISSION CONTROL -Auto-cruise Control System17-26
Terminal
No.Normal condition Check conditions Check item
11Throttle position sensorAccelerator pedal: Fully depressed450 - 800 mV
Accelerator pedal: DepressedThe more deeply the
pedal is depressed, the
higher value the MUT-
IIdisplay
Accelerator pedal: Release4,200 - 4,900 mV
12Accelerator pedalAccelerator pedal: Fully depressed985 - 1,085 mV
position sensorAccelerator pedal: DepressedThe more deeply the
pedal is depressed, the
higher value the MUT-
IIdisplay
Accelerator pedal: Release4,000 mV or more
<4M4>
Terminal
No.Check itemCheck conditionsNormal condition
01Auto-cruiseMAINMAIN switch: ONON
control
switchMAIN switch: OFFOFF
02SETMAIN switch:SET switch: ONON
(COAST)ONSET switch: OFFOFF
03RESUMERESUME switch: ONON
(ACCEL)RESUME switch: OFFOFF
04CANCELCANCEL switch: ONON
CANCEL switch: OFFOFF
05Stop lamp switchBrake pedal: DepressedON
(for stop lamp circuit)Brake pedal: ReleasedOFF
06Stop lamp switchBrake pedal: DepressedOFF
(for auto-cruise control
circuit)
Brake pedal: ReleasedON
07Clutch switchClutch pedal: DepressedON
Brake pedal: ReleasedOFF
Inhibitor switchSelector lever: “N”, “P” positionON
Selector lever: Other than “N”, “P” positionOFF
08Accelerator switchAccelerator pedal: ReleasedON
(Idle position switch)Accelerator pedal: DepressedOFF
09Auto-cruise controlAuto-cruise control system: ActivatedON
systemAuto-cruise control system: Not activatedOFF


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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 23-25
Code No. 26 Stop lamp switch systemProbable cause
If the stoplampswitch is continuously on for 5 minutes or more while the
vehicle isbeing driven, it is judged that there is ashort-circuit in the stoplamp
switch and code No. 26 is output.DMalfunction of brakepedal
DMalfunction of stoplampswitch
DMalfunction of harness or connector
DMalfunction of engine-A/T-ECU <6G7>
DMalfunction of A/T-ECU<4M4>
NG
NG
MUT-
IIData List
DNo. 26 Stoplampswitch system
OK:The switch turns ON when
brakepedal is depressed
the switch turns OFF when
the brakepedal is released.Transient malfunction
(Refer to GROUP 00 - Points to
Note for Transient Malfunctions.) OK
OK OK OKNG
Repair
Repair
Check the following connectors:
D-26, D-27
D-124, D-27Check the harness between the stop
lampswitch and the battery, and
repair if necessary.
OK OK
NG
Brakepedal heightcheck
(Refer to GROUP 35A - On-vehicle
Service.)
OKNG
Adjust
OK
OK
NG
NG
Check the trouble symptoms.Replace the engine-A/T-ECU or
A/T-ECU.
Check the following connectors:
<6G7-L.H. drive vehicles> D-27, D-26,
D-33, E-13, D-128, D-122,
<6G7-R.H. drive vehicles> D-27, D-124,
E-13, D-128, D-122,
<4M4-L.H. drive vehicles> D-27, D-26,
D-33, E-13, D-128, D-109
<4M4-R.H. drive vehicles> D-27, D-124,
E-13, D-128, D-109Measure at engine-A/T-ECU
connector D-122 <6G7>, A/T-ECU
connector D-109 <4M4>.
DMeasure at the ECU terminals
D<6G7> Voltage between terminals
123 and earth
D<4M4> Voltage between terminal
59 and earth
OK:System voltage when brake
pedal is depressed
1 V or less when the brake
pedal is released
Measure at stoplampswitch
connector D-136.
DDisconnect the connector and
measure at the harness side.
DVoltage between terminals 2 and
earth
OK:System voltageNG
Replace
NG
Repair
Stoplampswitch check
(Refer to GROUP 35A - On-vehicle
Service.)
Check the following connector:
D-136
RepairNG
Check the following connectors:
<6G7> D-122,<4M4>D-109
DCheck the harness between the
stoplampswitch and the
engine-A/T-ECU, and repair if
necessary. <6G7>
DCheck the harness between the
stoplampswitch and the
A/T-ECU, and repair if necessary.
<4M4>
DCheck the harness between the
stoplampswitch and the battery,
and repair if necessary.


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AUTOMATIC TRANSMISSION -Troubleshooting 23-32
Code No.41 1st without completion of shiftingProbable cause
If the output shaft speed sensor output multiplied by the 1st gear ratio is not
identical to the input shaft speed sensor output after shifting to 1st, code No. 41
is output.
If code No. 41 is output 4 times, the transmission is fixed in 3rd and the N
range lampflashes at a rate of 1 Hz.DMalfunction of input shaft speed sensor
DMalfunction of output shaft speed sensor
DMalfunction of harness or connector
DMalfunction of solenoid valve
DMalfunction of reverse clutch retainer
DMalfunction of direct planetary carrier
DMalfunction of LR brake system
DMalfunction of UD clutch system
DMalfunction of RED brake system
DMalfunction of one-way clutch system
DMalfunction of engine-A/T-ECU <6G7>
DMalfunction of A/T-ECU<4M4>
DNoise is generated.
LRefer to the Transmission Workshop Manual.
Repair
NO
YES
YES
MUT-
IISelf-Diag Code
DIs code No. 22 output?Code No. 22 Input shaft speed sensor system check
(Refer to P.23-20.)
OKNO
Code No. 23 Input shaft speed sensor system check
(Refer to P.23-22.)MUT-
IIActuator Test
DIs code No. 23 output?
NG
NGMUT-
IIActuator Test
DNo.1 LR solenoid valve
DNo.2 UD solenoid valve
DNo.3 2ND solenoid valve
DNo.4 OD solenoid valve
DNo.5 RED solenoid valve
OK:The sound of operation should be heard.Replace the appropriate solenoid valve.
L
DCheck the harness between the input shaft speed sensor
and the engine-A/T-ECU. <6G7>
DCheck the harness between the input shaft speed sensor
and the A/T-ECU.<4M4>
Replace the input shaft speed sensor.
LNG
Check the trouble symptoms.
Overhaul the A/T.
L
DReplace the reverse clutch retainer.
Check the trouble symptoms.
Eliminate the cause of the noise.To the nextpage
Measure the output wave pattern of the input shaft speed
sensor at engine-A/T-ECU connectors D-121 and D-122
<6G7>, or at A/T-ECU connector D-108<4M4>(using an
oscilloscope).
DVehicle speed: approx. 50 km/h
DShift range: 4th
<6G7> Voltage between No.81 (D-121) and No.103 (D-122)
<4M4> Voltage between No.31(D-108) and No.43 (D-108)
OK:A wave pattern such as the one shown on P.23-69
(Check Procedure Using an Oscilloscope) should be
output, and the maximum value should be 4.8 V or more
and the minimumvalue should be 0.8 V or less. There
should be no noise in the output wave pattern.
OKOK
NG
NG


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AUTOMATIC TRANSMISSION -Troubleshooting 23-33
NG
Replace the valve body assembly.
L
Check the trouble symptoms.
Replace the engine-A/T-ECU or A/T-ECU.
Check the trouble symptoms.
Repair
OK
NGDCheck the harness between the output shaft speed sensor
and the engine-A/T-ECU. <6G7>
DCheck the harness between the output shaft speed sensor
and the A/T-ECU.<4M4>
Replace the output shaft speed sensor.
L OK
Check the trouble symptoms.
Overhaul the A/T.
L
DReplace the direct planetary carrier.
Check the trouble symptoms.
Eliminate the cause of the noise.
To the nextpage
Measure the output wave pattern of the output shaft speed
sensor at engine-A/T-ECU connectors D-121 and D-122
<6G7>, or at A/T-ECU connector D-108<4M4>(using an
oscilloscope).
DVehicle speed: approx. 50 km/h
DShift range: 4th
<6G7> Voltage between No.81 (D-121) and No.104 (D-122)
<4M4> Voltage between No.32(D-108) and No.43 (D-108)
OK:A wave pattern such as the one shown on P.23-69
(Check Procedure Using an Oscilloscope) should be
output, and the maximum value should be 4.8 V or more
and the minimumvalue should be 0.8 V or less. There
should be no noise in the output wave pattern.
OK
NG
Overhaul the A/T.
L
DReplace the UD clutch. (Code No. 42, 43 or No. 44 is
output, or no other codes are output.)
DReplace the LR brake. (Code No. 46 is output, or no other
codes are output.)
DReplace the RED brake. (Code No. 42, 43 or No. 46 is
output, or no other codes are output.)
DReplace the one-way clutch (OWC-L). (No other codes are
output.)
DReplace the one-way clutch (OWC-D). (Code No. 42 or
No. 43 is output, or no other codes are output.)NG
NG NG


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