2000 MITSUBISHI MONTERO Service Repair Manual

D
em agnetis e r A
ppro x. 5 cm F
ro nt of ve hic le R
oof panel 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
-3 9
T e rm i- I
n put/o ut- t S
ig nals ym - b
l T
e rm in al l
t H
arn ess pro ble m T
ro uble sym pto m swhen th ere is a h
n
alN o. p g
v
o lt a ge
( V ) O
pen
c ir c u it s
h ort- c ir -
c u it y
p 4
-1 – – – – – –
5 I
n put I
S O K (M UT-
I I d ata sig -
n al) H
i: S yste m
v o lt a ge
L o:0 -1 E
xis ts E
xis ts C
om munic a tio n betw een th e
M UT-II and th e engin e-E C U
< D ie se lv e hic le s> or engin e-
A /T -E C U is not
p ossib le . 6 I
n put/o ut-
p ut D
ATA
( E TA C S
S W Sdata
s ig nal) H
i: S yste m
v o lt a ge
L o:0 -1 E
xis ts E
xis ts 7 I
n put/o ut-
p ut M
-D ATA (A U -
D IO )
( M -B U S data
s ig nal) H
i: 4 -5
L o:0 -1 E
xis ts E
xis ts 8 I
n put/o ut-
p ut M
-
C LO CK(A U -
D IO )
( M -B U S (C
l o ck sig nal) H
i: 4 -5
L o:0 -1 E
xis ts E
xis ts 9 I
n put/o ut-
p ut M
-
D ATA (A /C )
( M -B U S data
s ig nal) H
i: 4 -5
L o:0 -1 E
xis ts E
xis ts 1
0 I
n put/o ut-
p ut M
-
C LO CK(A /C )
( M -B U S (C
l o ck sig nal) H
i: 4 -5
L o:0 -1 E
xis ts E
xis ts

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.


www.WorkshopManuals.co.uk


Purchased from www.WorkshopManuals.co.uk

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


www.WorkshopManuals.co.uk


Purchased from www.WorkshopManuals.co.uk

CHASSIS ELECTRICAL -RV Meter54A-19
Inspection procedure 3
Ambient temperature does not display normally.
OK
Ambient temperature sensor check
(Refer to GROUP 55B.)
NG
MUT-II diagnosis code
Is A/C diagnosis code No. 13 or No.
14 output?
Repair
Replace the RV meter. NG
Check the harness between the
A/C-ECU and the RV meter, and
repair if necessary.
Carry out a service function wiring
check.
Is the M-BUS signal normal?
YESNO
Replace the RV meter. NGNO
OK
Measure at RV meter connector D-39.
DConnector disconnected
DVoltage between terminal (27) and
body earth
OK:Hi: System voltage
Lo: 0 - 1 V
YES
Check the harness between the RV
meter and the vehicle speed sensor,
and repair if necessary.
Check the following connec-
tors:D-40, D-131
Carry out a service function wiring
check.
Is the SWS signal normal?Check the harness between the RV
meter and the ETACS-ECU, and
repair if necessary.NGMeasure at RV meter connector D-40.
DConnector disconnected
DVoltage between terminal (9) and
body earth
DVoltage between terminal (10) and
body earth
DVoltage between terminal (19) and
body earth
OK:Hi: 4 - 5 V
Lo: 0 - 1 V
OK
OK

Ambient temperature sensor check
(Refer to GROUP 55A.)
NGReplaceCarry out a service function wiring
check.
Is the ambient temperature sensor
signal normal?
YESNO
Replace the RV meter. NGNO
OKMeasure at RV meter connector D-39.
DConnector disconnected
DVoltage between terminal (27) and
body earth
OK:Hi: System voltage
Lo: 0 - 1 V
YES
Check the harness between the RV
meter and the vehicle speed sensor,
and repair if necessary.
Check the following connectors:
A - 30, D-27, D - 39
Carry out a service function wiring
check.
Is the SWS signal normal?Check the harness between the RV
meter and the ETACS-ECU, and repair if
necessary.
OK

NO
Repair


www.WorkshopManuals.co.uk


Purchased from www.WorkshopManuals.co.uk