service indicator MITSUBISHI MONTERO 2000 Service Repair Manual

GENERAL -How to Use Troubleshooting/Inspection Service Points00-10
HOW TO USE THE INSPECTION PROCEDURES
The causes of a high frequency of problems occurring in electronic circuitry are generally the connectors,
components, the ECU and the harnesses between connectors, in that order. These inspection procedures
follow this order, and they first try to discover a problem with a connector or a defective component.
D
Indicator does not turn on or off even if control
mode switch is pressed.
D
Indicator switch should not be illuminated is
illuminated.Probable cause
OK
OK
OK
Measure at switch connector A-44
DDisconnect the connector, and measure at the harness
side.
DVoltage between terminal 6 - earth and terminal 8 -
earth
OK:Approx. 5V
OK
NG
Check the following connector.A-44
Repair
OK
Check trouble symptom.
Replace the ECS-ECU.
In the above cases, the ECS switch circuit is defective or the indicator
circuit is defective.
CHECKING PROCEDURE 4
2. Indicates inspection carried out using the
MUT-
II.
Indicates the operation and inspection proce-
dures.
Indicates the OK judgement conditions.
3. Detailed inspection procedures (methods)
such as component inspection andcircuit
inspection are listed on a separate page, and
are given here for reference.
5. Inspect the contact condition at each connectorterminal.
(Refer to Connector Inspection Service Points.)
The connector position can be located in the wiring diagram in the
electrical wiring manual bymeans ofthis symbol.
Caution
After carrying out connector inspection, always be sure to
reconnect the connector as it was before.
6. Confirm that there are trouble symptoms. If trouble symptomshave
disappeared, the connector may have been inserted incorrectly and the
trouble symptom mayhave disappeared during inspection.
If it seemsthat trouble symptoms still remain, proceed to the nextpage of
instructions.
7. If trouble symptoms still remain up to this stage, there is a possibility that there is an
open orshort circuit in the harness between the connectors, socheck the harness.
Alternatively, the cause may be a defectiveECU, so try replacing the ECU andcheck
if the trouble symptom disappears.
NGECU switch component inspection (Refer to P.33-44.)
NG
1. Comments on the diagnosis code ortrouble
symptom above.
MUT-II
Data list
17 Control mode selectionswitch
OK:Voltage changes between approx. 0V
®approx.
2.5V
®approx. 5V when the switch is operated.
4. Indicates voltage and resistance to be measured at a particular
connector.
(Refer to Connector Measurement Service Points.)
The connector position can be located in the wiring diagram in the
electrical wiring manual bymeans ofthis symbol.
Indicates operation and inspection procedures, inspection terminals
and inspection conditions.
Indicates the OK judgement conditions.
HARNESS INSPECTION
Check for an open or short circuit in the harness between the terminals which were defective according
to the connector measurements. Carry out this inspection while referring to the electrical wiring manual.
Here, “Check harness between power supply and terminal xx” also includes checking for blown fuses.
For inspection service points when there is a blown fuse, refer to “Inspection Service Points for a Blown
Fuse.”
MEASURES TO TAKE AFTER REPLACING THE ECU
If the trouble symptoms have not disappeared even after replacing the ECU, repeat the inspection procedure
from the beginning.


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GENERAL -Vehicle Identification00-1
GROUP 00
GENERAL
INSPECTION SERVICE POINTS
DIAGNOSIS FUNCTION
WHEN USING THE WARNING LAMP
The diagnosis code read-out function, which is available by means of the neutral position indicator lamp,
has been discontinued <Vehicles with 6G74 GDI>.
VEHICLE IDENTIFICATION
MODELS
<Short wheelbase>
Model codeEngine modelTransmission modelFuel supply system
V64WMNDFL64D56 Intercooler Turbo
(2 477mL)
V5MT1 <5M/T>Injection
MNHFL6
(2,477mL)
V5M31 <5M/T>
MNHFR6
MNXFL6
MNXFR6
V68WMNDFL64M41-DOHC Intercool-
erTurbo(3 200mL)
V5M31 <5M/T>Electronically-con-
trolledhighpressure
MNHFL6
erTurbo(3,200mL)trolledhighpressure
fuel distribution
MNHFR6
MYHFL6V5A51 <5A/T>
MYHFR6
MNXFL6V5M31 <5M/T>
MNXFR6
MYXFL6V5A51 <5A/T>
MYXFR6
V65WMYHCL66G74 GDI (3,496 mL)V5A51 <5A/T>GDI
MYHCR6
MNXCL6V5M31 <5M/T>
MYXCL6V5A51 <5A/T>
MYXCR6


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22-1
MANUAL
TRANSMISSION
CONTENTS
GENERAL INFORMATION 2..................
LUBRICANTS 2..............................
SEALANTS 2................................
SPECIAL TOOL 2............................
TROUBLESHOOTING <SS4 II> 3.............
ON-VEHICLE SERVICE 6.....................
Transmission Oil Check 6.......................
Oil Replacement 6.............................4WD Detection Switch Continuity Check
<V5MT1> 7...................................
High/Low Detection Switch Continuity Check
<V5MT1> 7...................................
TRANSMISSION CONTROL <V5MT1> 8.......
TRANSMISSION CONTROL <V5MT3> 9.......
TRANSMISSION ASSEMBLY 10..............
4WD INDICATOR-ECU/TRANSFER-ECU 17....


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23-1
AUTOMATIC
TRANSMISSION
CONTENTS
SERVICE SPECIFICATIONS 2.................
LUBRICANTS 2..............................
SPECIAL TOOLS 2..........................
TROUBLESHOOTING
<A/T> 3.....................................
<SS4II
>70................................
<Shift Lock and Key Interlock Mechanisms>
92 ..........................................
ON-VEHICLE SERVICE 94...................
Basic Adjustment Procedures 94.................
Transfer Oil Check 99...........................
Transfer Oil Change 99.........................
Location of Control Components 101..............
Control Component Checks 102..................
Torque Converter Stall Test 105..................
Fluid Pressure Test 106.........................Hydraulic Circuit 110............................
Line Pressure Adjustment 111...................
Selector Lever Operation Check 111..............
Transfer Shift Lever Operation Check 114........
Transmission Control Cable Adjustment 114......
Transfer-ECU Check 115........................
Position Indicator Lamp Check 115...............
TRANSMISSION CONTROL* 116.............
SHIFT LOCK AND KEY INTERLOCK
MECHANISMS* 120..........................
TRANSMISSION ASSEMBLY 122.............
TRANSMISSION OIL COOLER 127...........
A/T-ECU 129................................
TRANSFER-ECU 130........................
WARNING REGARDING SERVICING OF SUPPLEMENTAL RESTRAINT SYSTEM (SRS) EQUIPPED VEHICLES
WARNING!
(1) Improper service or maintenance of any component of the SRS, or any SRS-related component, can lead to personal
injury or death to service personnel (from inadvertent firing of the air bag) or to driver and passenger (from rendering
the SRS inoperative).
(2) Service or maintenance of any SRS component or SRS-related component must be performed only at an authorized
MITSUBISHI dealer.
(3) MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP 52B - Supplemental
Restraint System (SRS) before beginning any service or maintenance of any component of the SRS or any SRS-related
component.
NOTE
The SRS includes the following components: SRS-ECU, SRS warning lamp, air bag module, clock spring, and interconnecting
wiring. Other SRS-related components (that mayhave to be removed/installed in connectionwith SRS service or maintenance) are
indicated in the table of contents by an asterisk(*).


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AUTOMATIC TRANSMISSION -Troubleshooting <A/T>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:<L.H.
drive vehicles> A-04, <R.H. drive
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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