2000 MITSUBISHI MONTERO battery

MITSUBISHI SC-Troubleshooting13E-13
Inspection procedure 2
Communication with MUT-
IIand the SC-ECU is not
possible.
Probable cause
The cause is probably an open circuit in the SC-ECU power supply circuit or an
open circuit in the diagnosis output circuit.DMalfunction of harness or connector
DMalfunction of the SC-ECU
NG
Repair
OK
Check the trouble symptoms.
NG
Check the harness wire between SC-ECU and diagnosis
connector, and repair if necessary.
OK
Measure at SC-ECU connector E-121 and diagnosis connector
D-23.
DDisconnect the connectors and measure at the harness
side.
DContinuity between the following terminals:
Between terminals 1 (SC-ECU side) and 1 (diagnosis
connector side)
Between terminals 14 (SC-ECU side) and 7 (diagnosis
connector side)
Between terminals 23 (SC-ECU side) and 14 (diagnosis
connector side)
OK:
ContinuityNGCheck the following connectors:
E-121, E-122, D-128, E-13,
D-33, D-222, D-23
OK
NG
Repair
OK
Check the trouble symptoms.
NG
OKNG
Repair
OK
(1)NGCheck the following connectors:
B-25X, D-128, E-122,
E-121
NG
Check the harness wire between the engine control relay and
the SC-ECU, and repair if necessary. (2)NG
OK
Check the trouble symptoms.
NG
Replace
NG
Check the harness wire between the battery and the SC-ECU,
and repair if necessary.
Check the following connectors:
D-27, D-223 ,
D-31 , E-13, E-122, E-120
Measure at SC-ECU connectors E-120, E-121.
DDisconnect the connector and measure at the harness
side.
(1) Voltage between terminal 25 and body earth
(Ignition switch: ON)
OK:
System voltage
(2) Voltage between terminal 39 and body earth
OK:
System voltage
NG (1)NG
Check the harness wire between the SC-ECU and the body
earth, and repair if necessary.
Repair
NG
Replace the SC-ECU.
Check the trouble symptoms.
Check the following connectors:
E-120, E-122
NG
(2), (3)NG
Check the harness wire between the SC-ECU and the body
earth, and repair if necessary.
OK
NG
Repair
NGCheck the trouble symptoms.
Check the following connector:
E-121, E-122
OK
Check the trouble symptoms.
Measure at SC-ECU connector E-120, E-121.
DDisconnect the connector and measure at the harness
side.
(1) Continuity between 31 and body earth
OK:
Continuity
(2) Continuity between 13 and body earth
OK:
Continuity
(3) Continuity between 26 and body earth
OK:
Continuity
Check the trouble symptoms.
Check the fusible link No.2 and dedicated fuse No.7


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DIESEL FUEL <4D5-stepIII>-Troubleshooting13E-31
INSPECTION PROCEDURE 5
No initial combustion (unable to start)
Probable cause
Probable causes can be found in troubles with control system, injection pump,
glow system, and power supply system.DControl system inoperative
DInjection pump inoperative
DIntake system inoperative
DGlow system inoperative
DEngine-ECU inoperative
NG
Repair
MUT-IISelf-Diag code
Is a diagnosis code output?YESInspection chart for diagnosis codes (Refer to P.13E-8.)
NO
Conduct MUT-IIData list check and an actuator test.
(Refer to P.13E-40, 44.)OKCheck the following items in order:
DGlow plug, glow plug relay
DBattery
DInjection nozzle
DThrottle body assembly
DInjection pump
DCompression pressure
DExistence of mixing foreign objects (water, kerosene) with
the fuel
INSPECTION PROCEDURE 6
Starting performance is bad when the engine is cold
(unable to start)
Probable cause
Probable causes can be found in troubles with control system, injection pump,
fuel system, intake system, and glow system.DControl system inoperative
DInjection pump inoperative
DFuel system inoperative
DIntake system inoperative
DGlow system inoperative
DEngine-ECU inoperative
NG
Repair
MUT-IISelf-Diag code
Is a diagnosis code output?YESInspection chart for diagnosis codes (Refer to P.13E-8.)
NO
Conduct MUT-IIData list check and an actuator test.
(Refer to P.13E-40, 44.)OKInspect the following items in order:
DGlow plug, glow plug relay
DInjection nozzle, fuel filter
DThrottle body assembly
DExistence of starter switch signal input
DEngine oil
DInjection pump
DExistence of mixing foreign objects (water, kerosene) with
the fuel


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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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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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ENGINE ELECTRICAL -Charging System16-10
14. If the voltage reading conforms to the value
in the voltage regulation, then the voltage
regulator is operating normally.
If the voltage is not within the standard value,
there is a malfunction of the voltage regulator
or of the alternator.
15. After the test, lower the engine speed to the
idle speed.
16. Turn the ignition switch off.17. Remove the tachometer or the MUT-II.
18. Disconnect the negative battery cable.
19. Disconnect the ammeter and voltmeter.
20. Connect the alternator output wire to the
alternator “B” terminal.
21. Remove the special tool, and return the
connector to the original condition.
22. Connect the negative battery cable.
Voltage Regulation Table
Standard value:
Inspection terminalVoltage regulator ambient temperature_
CVoltage V
Terminal “S”-2014.2 - 15.4
2013.9 - 14.9
6013.4 - 14.6
8013.1 - 14.5


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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 23-45
Code No. 54 A/T control relay systemProbable cause
If the A/T control relay voltage is less than 7 V after the ignition switch is turned
to the ON position, it is judged that there is ashort-circuit to earth oropen
circuit in the A/T control relay, and code No. 54 is output.
The transmission will be fixed in 3rd as a fail-safe measure, and the N range
indicator will flash at a rate of 1 Hz.DMalfunction of A/T control relay
DMalfunction of harness or connector
DMalfunction of engine-A/T-ECU <6G7>
DMalfunction of A/T-ECU<4M4>
A/T control relay check
(Refer to P.23-103.)Replace
Transient malfunction
(Refer to GROUP 00 - Points to
Note for Transient Malfunctions.)
OK NG
Check the following connectors:
<6G7> D-120,<4M4>D-109 OK OKNG
Repair OK Repair
Check the following connector: drive vehicles> A-04, vehicles> D-145 NG
(1)NG
(2)NG
NG
Measure at engine-A/T-ECU
connector D-120 <6G7>, or at
A/T-ECU connector D-109 <4M4>.
DMeasure at the ECU terminals.
D<6G7> Voltage between terminal
50 and earth
D<4M4> Voltage between terminal
71 and earth
OK:System voltage
Replace the engine-A/T-ECU or
A/T-ECU.NGCheck the trouble symptoms.
OKMUT-
IIService Data
DNo. 54 A/T control relay
OK:System voltage
(3)NG
OK
Measure at A/T control relay
connector D-12.
DDisconnect the relay and
measure at the connector side.
(1) Voltage between terminal 1 and
earth
OK:System voltage
(2) Resistance between terminal 2
and earth
OK:2
Wor less
(3) Voltage between terminal 4 and
earth
(Ignition switch: ON)
OK:System voltage
OK
Check the following connector:D-12Replace NG
Check the harness between the A/T
control relay and the battery.
NG
OKRepair
Check the following connector:D-14
Check the harness between the A/T
control relay and body earth.
Repair OKNG
NG
DCheck the harness between the
A/T control relay and the
engine-A/T-ECU. <6G7>
DCheck the harness between the
A/T control relay and the
A/T-ECU, and repair if necessary.
<4M4>
DCheck the harness between the
A/T control relay and the
engine-A/T-ECU. <6G7>
DCheck the harness between the
A/T control relay and the
A/T-ECU.<4M4>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 terminals
77, 89 and earth
D<4M4> Voltage between terminals
2, 3 and earth
OK:System voltage
OK
DCheck the harness between the
A/T control relay and the battery.
DCheck the harness between the
A/T control relay and the
engine-A/T-ECU. <6G7>
DCheck the harness between the
A/T control relay and the
A/T-ECU, and repair if necessary.
<4M4> NGCheck the following connectors:
<6G7> D-121,<4M4>D-107OK
NG
Repair


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AUTOMATIC TRANSMISSION -Troublehshooting II>23-79
Code No. 26 Stop lamp switch systemProbable cause
Code No. 26 is output to indicate a short-circuit in the stoplampswitch when
the stoplampswitch is continuously on for 15 minutes or more when the vehicle
speed is 15 km/h or higher.DMalfunction of brakepedal
DMalfunction of stoplampswitch
DMalfunction of harness or connector
DMalfunction of transfer-ECU
NG
NG
NG
MUT-
IIData List
DNo. 23 Stoplampswitch system
OK:ON when brakepedal is depressed
OFF when the brakepedal is releasedTransient malfunction
(Refer to GROUP 00 - Points to Note for Transient
Malfunctions.) OK
OK OK OK NG
DCheck the harness between the stoplampswitch and the
transfer-ECU, and repair if necessary.
DCheck the harness between the stoplampswitch and the
battery, and repair if necessary.Repair
Check the harness between the stoplampswitch and the
battery, and repair if necessary.
OK OK
Brakepedal heightcheck
(Refer to GROUP 35 - Brake Pedal.)
OKNG
Adjust
OK
OK
NG
NG
Check the trouble symptoms.Replace the transfer-ECU.
Measure at transfer-ECU connector E-108
DMeasure at ECU terminals.
DVoltage between terminals 34 and earth
OK:System voltage when brakepedal is depressed
1 V or less when brakepedal 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 35 - Brake Pedal.)
Check the following connector:D-136
Repair NG
Check the following connector:E-108Repair
Check the following connectors: D-27,
D-26, D-33, E-105, E-108, D-124, E-115,
E-108, D-27
Check the following connectors: D-27,
D-26, D-27, D-124


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