audio MITSUBISHI MONTERO 2000 Service Repair Manual

I
n put/
O utp ut S
ig nalsym bol T
e rm in al
v o lt a ge (V ) W
ir in g harn ess
p ro ble m T
ro uble sym pto m ca use d by wir in g
h arn ess pro ble m O
pen
c ir c u it S
hort
c ir c u it 1
-4 - - - - -
5 I
n put I
S O K H
i: Syste m
v o lt a ge
L o:0 -1 E
xis ts E
xis ts M
UT-II ca nnot be use d to ch eck th e
e ngin e-E C U. 6 - - - - -
7 I
n put/
O utp ut M
-D ATA
( A U DIO ) H
i: 4-5
L o:0 -1 E
xis ts E
xis ts A
udio dis p la y does not appear. Panel
s w it c h ca nnot be opera te d fo r audio unit .
N ig httim eillu m in atio n does nota ppear fo r
a udio unit . 8 I
n put/
O utp ut M
-C LO CK
( A U DIO ) H
i: 4-5
L o:0 -1 E
xis ts E
xis ts A
udio dis p la y does not appear. Panel
s w it c h ca nnot be opera te d fo r audio unit .
N ig httim eillu m in atio n does nota ppear fo r
a udio unit . 9 I
n put/
O utp ut M
-D ATA
( A /C ) H
i: 4-5
L o:0 -1 E
xis ts E
xis ts A
/C dis p la y does notappear.
O uts id e air te m pera tu re does not appear 1
0 I
n put/
O utp ut M
-C LO CK
( A U DIO ) H
i: 4-5
L o:0 -1 E
xis ts E
xis ts A
/C dis p la y does notappear.
O uts id e air te m pera tu re does not appear 1
1 -1 4 - - - - - -

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-66
INSPECTION PROCEDURE 7
Air conditioning display is not available.
Measure at center display unit connec-
tor D-03.
DDisconnect the connector.
DVoltage between terminal 36 and
body earth.
OK:System voltage (Ignition
switch: ON)
0 - 1 V (Ignition switch:
OFF)NGCheck the wiring harness between the
center display unit and the junction
block, and repair if necessary.
OK
NO OK
Check theaudio unit.
NG
NG
Repair wiring harness.
OK
OK
Replace the center display unit.
YES
Replace the A/C-ECU.
YES
Refer to GROUP 55 - A/C troubleshoot-
ing.Check the reoccurrence of symptom.OKEND
NG
Replace the center display unit.
Measure at center display unit connec-
tor D-04.
DDisconnect the connector.
DVoltage between terminal 9 and
body earth.
DVoltage between terminal 10 and
body earth.
DVoltage between terminal 19 and
body earth.
OK:Hi:4–5V
Lo:0–1V
Check the the wiring harnesses:
DBetween the center display and
A/C-ECU D-04, D-49
DBetween the center display and
AUDIO D-04, D-49
Check the reoccurrence of symptom.Select “Check of units connected into
the center display” on the service mode.
Does the symbol “AU” appear?
MUT-
IISelf-Diag code
Is the diagnosis code for A/C set?NG
NO


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G
EN ER AL
O UTLIN E OF CHANG ES
D Sin ce th e im mobiliz e r-E C U lo ca tio n has been m ove d fr o m th e ig nit io n ke y cylin der to near th e dia gnosis
c o nnecto r, th e re m ova l and in sta lla tio n pro ce dure has been ch anged.
D The tr o uble sh ootin g fo r sp eedom ete r has been ch anged to th e meth od em plo yin g sim ula te d ve hic le
s p eed sig nal in put ch eck wit h th e MUT-II .
D Due to th e adoptio n of an RV mete r, th e se rv ic e adju stm ent pro ce dure has been added.
D Due to th e adoptio n of a gla ss ante nna on th e le ft of a quarte r win dow gla ss, th e re m ova l and
i n sta lla tio n pro ce dure of fe eder ca ble s has been added.
T he se rv ic e adju stm ent pro ce dure s whic h are not describ ed here are th e sa m e as befo re .
G EN ER AL IN FO RM ATIO N
T he RV mete r, whic h dis p la ys va rio us ve hic le in fo rm atio n has been use d fo r so m e models .
B y opera tin g each fu nctio n sw it c h , in clu din g ”A D J” and ”D IS P” sw it c h es, driv in g in fo rm atio n scre en,
A /C in fo rm atio n scre en, envir o nm ent in fo rm atio n scre en, clo ck in fo rm atio n scre en, and audio scre en
c a n be ca lle d up. F
unctio n
s w it c h 1 A
D J F
unctio n
s w it c h 3 F
unctio n
s w it c h 2 D
IS P G
eom agnetic
s e nso r B
aro m etr ic air
p re ssu re se nso r A
/C IN FO RM ATIO N
T he driv in g in fo rm atio n scre en dis p la ys th e ave ra ge
v e hic le sp eed,a ve ra ge fu ele ff ic ie ncy, a nd possib le
t r a ve l dis ta nce base d on th e in fo rm atio n deriv e d
f r o m th e engin e-E C U and th e fu el gauge unit . T
he scre en dis p la ys se t te m pera tu re , fa n air m ass,
r e ar defo gger opera tio n, co m pre sso r opera tio n,
f r o nt defr o ste r opera tio n, and in sid e and outs id e
a ir m ode.
w
ww.W ork sh opM an uals .c o .u k
P urc h ased f r o m w ww.W ork sh opM an uals .c o .u k

D
IS P A
D J F
unctio n sw it c h 3 F
unctio n
s w it c h 2 C
onte nts R
efe re nce
P age A
uto m atic mode dia gnosis c
h ecks ve hic le sig nalin fo rm atio n co m munic a tio n, audio ,A /C ,
f u el in fo rm atio n, monit o r auto m atic a lly wheneve r fu nctio n
s w it c h 1(N EXT) is pre sse d. 5
4A -7 D
ia gnosis mode c
h ecks ve rs io n, ve hic le sig nal, co m munic a tio n in fo rm atio n (a udio ,
A /C ,and fu el) . 5
4A -9 H
is to ry m ode d
is p la ys his to ry ofco m munic a tio n erro r. 5
4A -1 1 M
onit o r h
k D
is p la y ch eck m ode c
h ecks th e dis p la y. c
h eck m ode G
eom agnetic ch eck
m ode c
h ecks th e geom agnetic se nso r. A
lt im ete r adju st m ode a
dju sts th e alt im ete r.

CHASSIS ELECTRICAL -RV Meter54A-17
Termi-Input/out-
t
Signal sym-
bl
Terminal
lt
Harness problemTrouble symptoms when there is a
hblnal No.
p
put
gy
bolvoltage
(V)Open
circuitshort-cir-
cuit
yp
harness problem
11 - 1 4––––––
15Input/out-
putK (engine
K-LINE
signal)Hi: Sys-
tem volt-
age
Lo:0 - 1ExistsExistsDWiring communication error
DCommunication between the
engine-A/T-ECU hicles> is not possible.
DAbnormal driving information
numerical display
16––––––
17Input/out-
putM-BUSY
(AUDIO)Hi:System
voltage
Lo:0 - 1ExistsExistsDAudio information does not
appear on the screen.
18–SHIELD-
EARTH
(AUDIO)––––
19Input/out-
putM-BUSY
(A/C)Hi:System
voltage
Lo:0 - 1ExistsExistsDAir conditioner information does
not appear on the screen.
DAmbient temperature is not
displayed.
20–SHIELD-
EARTH––––
22 - 21––––––
23InputAmbient
temperature
sensor–ExistsExistsDAmbient temperature is not
displayed.
24InputILL + (Light-
ing switch)Hi:System
voltage
Lo:0 - 1ExistsExistsDoes not illuminate.
25InputACC (ACC
power sup-
l)
System
voltageExists–Screen does not appear. No
operations are possible.
pp
ply)
g
–ExistsBlown multi-purpose fuse
26Input+BSystem
voltageExists–Screen does not appear. No
operations are possible.
g
–ExistsBlown multi-purpose fuse
27InputVSS (Vehicle
speed pulse
signal)Hi:System
voltage
Lo:0 - 1ExistsExistsDAbnormal “Distance km after
replacement” display in mainte-
nance screen
DSwitches which are not
supposed to operate during
driving do operate.
(Example:clock adjustment
screen, maintenance settings,
etc.)
DAmbient temperature display is
abnormally high.
28–Earth–Exists–Screen does not appear.


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CHASSIS ELECTRICAL -RV MeterCHASSIS ELECTRICAL -RV MeterCHASSIS ELECTRICAL -RV Meter54A-18
Termi-Input/out-
t
Signal sym-
bl
Terminal
lt
Harness problemTrouble symptoms when there is a
hblnal No.
p
put
gy
bolvoltage
(V)Open
circuitshort-cir-
cuit
yp
harness problem
29 - 30––––––
31–EARTH
(TEMP)––––
32–ILL - (illumi-
nation lamp
adjustment
signal)–ExistsExistsUnable to adjust illumination lamp
33InputFUEL
GAUGE0-3ExistsExists–
34 - 36––––––
CHART CLASSIFIED BY TROUBLE SYMPTOMS
Related unitTrouble SymptomInspection
procedure
No.Refer-
ence
page
Malfunction of RV meterNo system operations can be carried out.154A-18
System voltage drop warning screen appears.254A-18
Ambient temperature does not display normally.354A-19
Compass does not display normally.454A-20
Altimeter does not display normally.554A-21
Air conditioner information does not display normally.654A-21
Audio information does not display normally.754A-22
INSPECTION PROCEDURES FOR EACH TROUBLE SYMPTOM
Inspection procedure 1
No system operations can be carried out.
NG
OK
Check the following connectors:
D-27, D-223, D-31, D-39
D - 27, D - 33, D - 39Repair
Check the trouble symptoms.NGReplace the RV meter.
Inspection procedure 2
System voltage abnormality screen appears.
NOEnd
OK YES
Replace the battery.
Replace the RV meter.
NG
Does the voltage abnormality screen appear immediately
after the ignition switch is turned to the ACC position?
Malfunction of RV meter voltage judgment circuitMeasure at RV meter connector D-39.
DConnector disconnected
DVoltage between terminal (25) and body earth
OK:System voltage


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CHASSIS ELECTRICAL -RV Meter54A-22
Inspection procedure 7
Audio information does not display normally.
Replace the RV meter.
NG
Replace the radio and tape, CD
player
(1)
Check the trouble symptoms.
Carry out a service function
communication and wiring check. One
of the following M-BUS outputs will
appear.
(1) E1 (Communication error)
(2) E2 (Open circuit or short-circuit)
(3) OKMeasure the wave pattern at RV meter
connector D-40.
DConnector disconnected
DVoltage between terminal (7) and
body earth
DVoltage between terminal (8) and
body earth
DVoltage between terminal (17) and
body earth
OK:Hi: 4 - 5 V
Lo: 0 - 1 V
Malfunction of radio and tape, CD
player OK
(2)
Check the harness between the RV
meter and the radio and tape, CD player,
and repair if necessary. (3)
YESOK
NG
Is error message “004” shown?NOReplace the RV meter.
NOTE:
The contents of error messages shown in the audio display screen are as follows:
Error messageLocation and cause of malfunction
EJECTA magazine for CD changeris not inserted.
NO DISCCD is not inserted.
ERROR 001Program error in audio
ERROR 002Error in CD disk
ERROR 003Mechanical error in audio system
ERROR 004Communication error in audio systemand RV meter,power supply error in audio
system, and other errors
ERROR HOTHeat protection for audio system


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SWS -General InformationSWS -General Information54B-2
GENERAL INFORMATION
COMMUNICATION LINE
Data lines for multiplex communication are connected between the front-ECU, ETACS-ECU, column switch
assembly, sunroof motor assembly, center display, power window main switch, and power window motors
as illustrated below.
ETACS-ECUMUT-II
Column switch
assembly
Front-ECU
Power window
main switch
Power window motor
(front-right)
Center display*1
Sunroof motor
assembly*2Power window motor
(front-left)
Power window motor
(rear-right)
Power window motor
(rear-left)

NOTE
: Uni-directional communication line
: Bi-directional communication line
*
1: Vehicles with center display
*2: Vehicles with sunroof
OPERATION
BUZZER
Light Reminder Warning Buzzer Function
When the driver’s door is opened with lighting switch
in the ON (tail lamp switch or headlamp switch)
position and ignition switch in the LOCK (OFF) or
ACC position, the buzzer will sound continuously to
remind the driver that the lamps (tail lamps or
headlamps) are ON.
This function does not work if the lighting switched
off through the headlamp automatic shutdownfunction. In addition, the ignition key reminder
warning buzzer function has a priority over this
function.
Center Display Operation Annunciation
Function
On vehicles with center display, the buzzer (peeps)
sounds when the operation switch of the audio
and navigation system is pressed.
CENTRAL DOOR LOCKING SYSTEM
Central Door Locking System Operation
When the lock switch is turned ON after the unlock
switch on the driver’s door lock actuator switch
is OFF, the ETACS-ECU gives a lock output for
0.5 second. When the unlock switch is turned ON
after the lock switch on the driver’s door lock
actuator switch is OFF, the ETACS-ECU gives an
unlock output for 0.5 second.
When the front passenger’s door key or back door
key is operated, the ETACS-ECU gives a lock or
unlock output for 0.5 second.Forgotten Key Prevention Function
If, with the key reminder switch OFF and the driver’s
door switch ON, the driver’s door lock switch is
turned ON after the door unlock switch in the front
door lock actuator is turned OFF, the ETACS-ECU
waits 0.3 second then give an unlock relay output
for 0.5 second, there by preventing the doors from
being locked. This operation prevents the ignition
key from being locked inside the vehicle. This
function takes precedence over the central door
locking control function.


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