fuse MITSUBISHI MONTERO 2000 Service User Guide

ABS <4WD> -Troubleshooting35B-19
Inspection procedure 2
Communication with MUT-II
and the ABS-ECU is not
possible.
Probable cause
The cause is probably anopencircuit in the ABS-ECU power supply circuit or
an opencircuit in the diagnosis output circuit.DBlown fuse
DMalfunction of harness or connector
DMalfunction of the ABS-ECU
(1)NG
OK
Check the following connectors:E-13, E-107
NG
Repair
OK
Check the trouble symptoms.
NG
Check the harness wire, and repair if necessary.
DBetween ABS-ECU and diagnosis connector
OK
Check the following connectors:D-32 , D-128,
D-208, D-210 , D-213 , E-08 , E-13,
E-106
NG
Repair OKCheck the trouble symptoms.
NG
Check the harness wire, and repair if necessary.
DBetween the ignition switch and the ABS-ECU
NG
Repair
OK
Check the trouble symptoms.
NG
Check the harness, and repair if necessary.
DBetween the ignition switch and the ABS-ECU
OK
NG
Repair
OK
NG
Replace the ABS-ECU.
Measure at diagnosis connector D-23 and ABS-ECU connector
E-107.
DDisconnect the connectors and measure at the harness
side.
DContinuity between the following terminals:
Between terminals 47 (ABS-ECU side) and 1 (diagnosis
connector side)
Between terminals 36 (ABS-ECU side) and 7 (diagnosis
connector side)
OK:ContinuityNGCheck the following connectors:D-23, D-33, D-128, D-222,
E-13, E-107
Check the trouble
symptoms.
Check the following connectors:E-106, E-107(2)NG
Measure at ABS-ECU connectors E-106, E-107.
DDisconnect the connectors and measure at the harness
side.
DIgnition switch: ON
(1) Voltage between terminal 13 and body earth
OK:System voltage
(2) Voltage between terminal 31 and body earth
OK:System voltage
OK
Check the following connectors:E-106, E-107
Repair
OK
Check the trouble
symptoms.
NG
Check the harness wire, and repair if necessary.
DBetween the ABS-ECU and earthNG NG
Measure at ABS-ECU connectors E-106, E-107.
DDisconnect the connectors and measure at the harness
side.
DContinuity between terminals 12, 25, 26 and 42 and body
earth
OK:Continuity


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ABS <4WD> -Troubleshooting35B-20
Inspection procedure 3
The ABS warning lamp does not illuminate when the
ignition key is turned to ON (engine stopped).
Probable cause
When power is first supplied to the ABS-ECU, the ABS-ECU turns the ABS-ECU
valve relay from off to on, off and back to onagain aspart of its initial check.
Accordingly, if the ABS warninglampdoes not illuminate, the cause is probably
an opencircuit in the ABS warninglamppower supply circuit, a blownlamp bulb
or an opencircuit between the ABS warninglamp and theABS-ECU.DBlown fuse
DBlown ABS warninglamp bulb
DMalfunction of ABS valve relay
DMalfunction of harness or connector
DMalfunction of combination meter
DMalfunction of the ABS-ECU
NG
Replace the combination meter.
NG
Repair
OK
NG
Check for a blown bulb.Replace the ABS
warning lamp bulb.
OK
NG
Repair
OK
Check the trouble symptoms.
Multi - purpose fuse No. 6 checkNGRefer to GROUP 00 – Inspection service Points for Blown
Fuse.
NG
Check the harness wire.
DBetween ignition switch and combination meter
DBetween the combination meter and the ABS-ECU
OK
OK
After replacing the ABS-ECU, carry out the following check.
DCheck the harness wire between the ABS warning lamp,
ABS valve relay and earth.
Check the following connector:E-107
NG
RepairCheck the trouble symptoms.OK
NG
Check the following connectors:D-01, D-208, D-210
, D-213 , E-10, E-107
Measure at the ABS-ECU connector E-107.
DDisconnect the connector and measure at the harness
side.
DIgnition switch: ON
DWarning lamp conditionwhen terminal 50 is shorted to
body earth
OK:Illuminates
Inspection procedure 4
The ABS warning lamp remains illuminated after the
engine has started.
Probable cause
The cause is probably a short-circuit in the ABS warninglamp illuminationcircuit.DMalfunction of combination meter
DMalfunction of harness (short-circuit)
DMalfunction of the ABS-ECU
NOTE
This trouble symptom is limited to cases where communication with the MUT-II is possible(ABS-ECU
power supply is normal) and the diagnosis code is a normal diagnosis code.
When the ABS valve relay connector B-21X and the
ABS-ECU connector E-107 are disconnected and the ignition
switch is turned to the ON position, does the ABS warning
lamp remain illuminated?YES
NO
Replace the ABS-ECU.
Replace the combination meter.
NG
Repair
OK
Check the harness wire.
DBetween the ABS warning lamp, the ABS-ECU and the
ABS valve relay


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SRS -Troubleshooting52B-13
Code No.34 Connector lock systemProbable cause
This diagnosis code is output when the SRS-ECU detects that the SRS-ECU
connector is improperly connected. However, when vehicle condition returns to
normal, this code will be automatically erased, and the SRS warninglampwill go
out.DMalfunction of connector
DMalfunction of SRS-ECU
NG YES
Are SRS-ECU connectors E-111, E-110 bags> connected properly.Check the following connectors: E-111,E-110 side air bags>
Repair
Replace the SRS-ECU.
RepairNOOK
Code No.35 SRS-ECU (deployed air bag) systemProbable cause
This code is displayed after deployment of air bags. If displayed before
deployment, the code indicates malfunction probably present in SRS-ECU.Malfunction of SRS-ECU
Replace the SRS-ECU.
Code No.41 Power circuit system (fuse No.6 circuit)
Code No.42 Power circuit system (fuse No.8 circuit)Probable cause
Code No.41 is displayed if voltage between IG1terminal (SRS-ECU, terminal 16)
and earth is lower than specified for fivesuccessive seconds ormore.
Code No.42 is displayed if voltage between IG
1terminal (SRS-ECU, terminal 13)
and earth is lower than specified for fivesuccessive seconds ormore.
However, when vehicle condition returns to normal, these codes will be
automatically erased, and the SRS warning lampwill go out. If codes No.41 and
42 are displayed together, check the battery first as vehicle may have
discharged battery.
DMalfunction of harness or connector
DMalfunction of SRS-ECU
NGOK
NG NG
OK
Replace the SRS-ECU.
Measure at SRS-ECU connector E-111.
DDisconnect the connector and measure at the harness
side.
DConnect the negative ( - ) battery terminal.
DIgnition switch: ON
DVoltage between terminal 16 and body earth (in case of
code No. 41)
OK: 9 V or more
DVoltage between terminal 13 and body earth (code No.42)
OK: 9 V or moreCheck the following connectors:D-208, D-209, D-210, E-111
Check the trouble symptoms.Repair
Check the harness wire between the SRS-ECU and the
ignition switch IG
1, and repair if necessary.


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CHASSIS ELECTRICAL-Combination Meter54A-29
Inspection procedure 5
None of the meters and gauges operate.
Probable cause
If the indicators and warning lamps are normal, then the harness
from the power supply (IG1) to the combination meter is normal.D
Malfunction of printed circuit board
D
Malfunction of harness or connector
NGRepair NG
OK
Check the trouble symptoms.Repair
OK
Check the harness between the combination meter and body
earth.
Check the following connectors:D-27, D-233, D-218, D-01,
D-03
NG
Check the harness between fusible link No. 2 and the
combination meter.
Replace the combination meter case.
Inspection procedure 6
Vehicle speed sensor check
The vehicle speed sensor is used by the speedometer, engine-ECU and A/T-ECU.
NG
Check the harness between the vehicle speed sensor and
body earth, and repair if necessary.
RepairNG
OK
Check the trouble symptoms.NG
Check the harness between the vehicle speed sensor and
multipurpose fuse No. 13, and repair if necessary.
RepairNG
OK
Check the trouble symptoms.
Check the following connectors:D-213, E-115, C-09
(3)NG
(2)NG
Check the following connectors:C-09
NG
Check the harness between the vehicle speed sensor and the
combination meter, and repair if necessary.
RepairNG
OK
Check the trouble symptoms.
OK
Measure at vehicle speed sensor connector C-09.
DDisconnect the connector and measure at the harness
side.
(1) Voltage between terminal 3 and earth
OK:4.5 V or higher
(2) Continuity between terminal 2 and earth
OK:Continuity
(3) Voltage between terminal 1 and earth
OK:System voltage(1)NGCheck the following connectors:D-01, D-222, E-13, E-113,
C-09
Vehicle speed sensor check (Refer to P.54A-33.)NG
Replace
NOTE
If the trouble symptoms cannot be eliminated by the above checks, there is probably a short-circuit at
the vehicle speed sensor output side (harness, speedometer, engine-ECU or A/T-ECU), and so this should
be checked.


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CHASSIS ELECTRICAL -Clock or Center Display54A-60
Terminal
No.Input/
OutputSignal symbolTerminal
voltage (V)Wiring harness
problemTrouble symptom caused by wiring
harness problem
Open
circuitShort
circuit
15Input/
OutputKHi: System
voltage
Lo: 0-1ExistsExistsValues on trip information screen (average
vehicle speed, fuel consumption and
cruising distance) are abnormal. Commu-
nication is impossible between the
engine-ECU and the MUT-II.
16------
17Input/
OutputM-BUSY
(AUDIO)Hi: 4-5
Lo: 0-1ExistsExistsAudio display does not appear. Panel
switch cannot be operated for audio unit.
Nighttime illumination does not appear for
audio unit.
18-SHIELD-GND----
19Input/
OutputM-BUSY
(A/C)Hi: 4-5
Lo: 0-1ExistsExistsA/C display does not appear.
Outside air temperature does not appear
20-SHIELD-GND----
21, 22------
23InputEX-TEMPExistsExistsOutside air temperature does not appear.
24InputILL+Hi: System
voltageExists-Nighttime illumination does not appear for
audio units.
Lo: 0-1
-ExistsBlown multipurpose fuse.
25InputACC (ACCSystem volt-Exists-Screen display does not appear.
power supply)age
-ExistsBlown multipurpose fuse.
26Input+BSystem volt-Exists-Screen display does not appear.
age
-ExistsBlown multipurpose fuse.
27InputVSSHi: System
voltage
Lo: 0-1ExistsExistsAbnormal outside air temperature ap-
pears.
(only diesel-powered vehicles)
28-GND (earth)-Exists-Screen display does not appear.
29, 30------
31-GND-TEMPExistsExistsOutside air temperature does not appear.
32InputILL -ExistsExistsThe display screen can not be dimmed.
33InputFUEL GAUGE-ExistsAbnormal cruising distance appears.
34, 35------
36InputIG1Hi: System
voltageExists-Communication with engine-ECU is im-
possible. Abnormal driving data values
appear.
-ExistsCommunication with engine-ECU is im-
possible. Abnormal driving data values
appear. Blown multipurpose fuse.


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CHASSIS ELECTRICAL -Clock or Center Display54A-62
INSPECTION PROCEDURE 1
No display appears after the ignition key is turn to the ACC position.
OK
Measure voltages between D-03 display connector terminal (25),
(26) voltage and earth.
DIgnition switch: ACC
OK:System voltageNGRepair the fuse and wiring harness.
OK
Measure resistance between D-03 display connector terminal (28)
and earth.
OK:approx. 0
WNGRepair the wiring harness.
OK
Repair the center display unit.
Check the following connector: D-03NGRepair
INSPECTION PROCEDURE 2
Outside air temperature does not appear or abnormal outside air temperature appears.

Check the following connector: D-03NGRepair.
NO
Go to inspection procedure 3.
Check the wiring harness between the
Center Display and the outside air tem-
perature sensor.OKReplace the center display unit.OKEnd
NG
Replace the outside air temperature
sensor.NG
Check the wiring harness between the
center display unit and the outside air
temperature sensor, and replace if nec-
essary.
OK
Is a correct outside air temperature dis-
played in the servicemode?YESIs a correct vehicle speed displayed in
the servicemode?YESEnd (no abnormality).
NO

Select “Check of units connected into
the center display” on the service mode.
Does the symbol “AU” appear?NOGo to inspection procedure 7.
YES
Replace the center display unit.
YES
MUT-
IISelf-Diag code
Is A/C diagnosis code No.13 or 14 set?YESCheck the outside air temperature sen-
sor. (Refer to GROUP 55B.)
NO
Is a correct vehicle speed displayed in
the servicemode?NOGo to inspection procedure 3.
NOTE: It is necessary to drive for a while and get accurate temperature in display if you pass a area
in which temperature is much different. It might show high temperature on display in case it is high
around sensor due to high temperature of engine after battery is exchanged, or a display unit is reinstalled.


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CHASSIS ELECTRICAL -Clock or Center Display54A-64
INSPECTION PROCEDURE 4
Abnormal driving data are displayed:
DAbnormal average fuel consumption (momentary fuel consumption) and average vehicle speed
DAbnormal cruising distance
Are the average fuel consumption and average vehicle speed dis-
play correctly?NOGo to inspection procedure 3.1.
YES
Does the vehicle information on displayed on the screen meet
with the actual vehicle?
Is the vehicle type (long or short body) recognized correctly?
(Select “Check of units connected into the center display” and
“Check of vehicle information” on the service mode.)NOReplace the center display unit.
YES
Is remained fuel amount displayed correctly on servicemode?YESEnd (no abnormality).
NO
Measure at center display unit connector D-03.
DDisconnect the connector.
DVoltage between terminal 33 and body earth.
OK:0.1 - 3 VNGCheck the wiring harness between center display unit and the
fuel gauge unit, and repair ifnecessary. (relevant units: Combination
meter, fuel gauge unit)
OK
Replace the center display unit.
NOTE
(1) If the remained fuel amount is so small that the fuel gauge unit can not detect a correct amount,
incorrect cruising range may be displayed.
(2) Fuel consumption is updated each time fuel is supplied. Furthermore, the cruising range depends
on road and driving conditions.
INSPECTION PROCEDURE 5
Clock runs fast or slow.
NGRepair the fuse and wiring harness.
OK
YES
Does it receive a radio station on differ-
ent region where has timelag?YESTurn off the CT function.
NO
Replace the center display unit.
Measure at center display unit connec-
tor D-03.
DIgnition switch: OFF
DVoltage between terminal 26 and
body earth.
OK:System voltage
Is the symbol “CT” displayed?
NO


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CHASSIS ELECTRICAL -Clock or Center Display54A-65
INSPECTION PROCEDURE 6
The display screen is dim.
NOMeasure at center display unit connec-
tor D-03.
DDisconnect the connector.
DVoltage between terminal 24 and
body earth.
OK:0 V (Lighting switch: off)
System voltage (Lighting
switch: ON)NGRepair the fuse and wiring harness.
Is the brightness of the center display
set correctly?NOAdjust the brightness of display on set-
ting mode.
OK
Replace the center display unit.
OK
Replace the center display unit.
YES
Measure at center display unit connec-
tor D-03.
DDisconnect the connector.
DRheostat: max
DVoltage between terminal 32 and
body earth.
OK:Low voltage (0 - 3 V)NGRepair the wiring harness.
Does the brightness of display change
when the lighting switch is on or off?
YES


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CHASSIS ELECTRICAL -Radio/Tape Player54A-74
B. RADIO
B-1 No power is supplied when the switch is set to ON.
Is dedicated fuse No. 6 blown or is the circuitopen?YESReplace fuse or repair harness.
NO
Is the connector at the back of the radio connected properly?NOConnect connector securely.
YES
Disconnect and check the connector at the rear of the radio.
Is the ACC power (12 V)being supplied to the radio?NORepair harness.
YES
Repair or replace radio.
B-2 No sound from one speaker.
Check to see if there is any sound
when attached to another radio.YESRepair or replace radio.
NO
Remove the connector on the back
of the radio and check the speaker
harness for conductance.YESIt conducts electricity but is shorted
out.Repair speaker harness.
NO
Check the speaker for conductance.YESRepair speaker harness and ensure
proper connection of relay connec-
tors.
NO
Repair or replace speaker.


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CHASSIS ELECTRICAL -Radio/Tape Player54A-77
B-7 Insufficient memory (preset stations are erased).
Is dedicated fuse No. 5 blown or is the circuitopen?YESReplace fuse or repair harness.
NO
Disconnect and check the connector at the rear of the radio.
Is the memory backup (battery) powerbeing supplied?NORepair harness.
YES
Repair or replace radio.
C. TAPE PLAYER
C-1 Cassette tape will not be inserted.
Are there any foreign objects in the tape player?YESRemove the object(s)*1.
NO*1
Attempting to force a foreign object (e.g., a coin or clip, etc.)
out of the tape player maydamage the mechanism. The
player should be taken to a service dealer for repair.
Does the tape player work if another tape is inserted?YESReplace tape*2.
NO
Repair or replace tape player.
*2
Ensure that the tape label is not loose, that the tape itself is
not deformed and that the tape is tightly wound. Also, tape of
C-120 or greater length often get caught in the mechanism
and should not be used.
C-2 No sound (even after a tape has been inserted).
Is dedicated fuse No. 6 blown or is the circuitopen?YESReplace fuse or repair harness.
NO
Is connector at rear of radio connected tightly?NOConnect connector firmly.
YES
Disconnect connector at rear of radio. Is ACC powerbeing
supplied to the radio?YESRepair or replace tape player.
NO
Repair harness.


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