2000 MITSUBISHI MONTERO Service Repair Manual

SWS -Troubleshooting54B-51
Inspection Procedure P-16
Power window main switch: Any switch signal is not sent
to the ETACS-ECU.Probable cause
If there is a problem with communication between the power windowmainswitch
and the ETACS-ECU, the input signal check for the power windowmainswitch
can no longer be carried out. In addition, the power window timer function will
also stop working.DMalfunction of power windowmainswitch
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector
Ye s
NG
Repair
NG
No
(1) NG
NG
Repair
NG
Check the harness wire between power windowmainswitch and
power window relay.
OK
Replace the power windowmainswitch.
NG
Repair
NG
Check the harness wire between power windowmainswitch and
body earth.
NG
Repair
Check trouble symptoms.NGReplace the ETACS-
ECU.
OK
Check trouble symptoms.
(2) NG
Check the following connectors:
H-05, D-25
OK
Check trouble symptoms.
Check the following connectors:
H-05, H-25, D-208, D-221Measure at power windowmainswitch connector H-05.
DDisconnect connector and measure at harness side.
DTurn the ignition switch to ON position.
(1) Voltage between terminal 1 or
5 and body earth.
OK:System voltage
(2) Continuity between terminal 5
or 3 and body earth.
OK:Continuity
OK
Replace the power win-
dow mainswitch
Check the harness wire between power windowmainswitch and
ETACS-ECU.
OK
Check trouble symptoms.
Check the following connectors:
H-05, D-25, D-31, D-226Can the driver’s side power window be operated by the power
window mainswitch?


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SWS -Troubleshooting54B-52
Inspection Procedure P-17
Transmitter: Any switch signal is not sent to the
ETACS-ECU.Probable cause
The transmitter input signal is used to operate the keyless entry system. If the
signal fails, keyless entry will not work normally.DMalfunction of transmitter
DMalfunction of ETACS-ECU
Ye s
NG
Replace
OK
Replace the defective transmitter.
OK
Use an other transmitter to register the secret code. (Refer to
GROUP 42 – Keyless Entry System.)NGReplace the ETACS-ECU.
Check the transmitter battery. (Refer to GROUP 42 – Keyless
Entry System.)
Has the encrypted codebeen registered properly?NoRe-register the encrypted code. (Refer to GROUP 42 – Keyless
Entry System.)
Inspection Procedure P-18
Sunroof switch: Any switch signal is not sent to the
ETACS-ECU.Probable cause
If there is a problem with communication between the sunroof motor assembly
and the ETACS-ECU, the input signal check for the sunroof switch can no
longer be carried out. In addition, the sunroof timer function will also stop
working.DMalfunction of sunroof switch
DMalfunction of sunroof motor assembly
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector.
Ye s
NG
Repair
NG
Replace the ETACS-ECU.
OK
Replace the sunroof motor assembly.Check trouble symptoms.
NG
Check the harness wire between sunroof motor assembly and
ETACS-ECU.NG
Repair
OK
Check trouble symptoms.
Check the following connectors:
F-06, F-02, D-29, D-31, D-226
Is the sunroof operated normally?NoCheck the sunroof. (Refer to P.54B-13, Trouble Symptom
Chart.)


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SWS -Troubleshooting54B-53
Inspection Procedure P-19
Center display: Any switch signal is not sent to the
ETACS-ECU.Probable cause
The cause is probably a malfunction of the center display or the ETACS-ECU.DMalfunction of center display
DMalfunction of ETACS-ECU
DMalfunction of harness wire or connector.
Ye s
NG
Repair
NG
Replace the ETACS-ECU.
OK
Replace the center display.Check trouble symptoms.
NG
Check the harness wire between center display and ETACS-ECU.NG
Repair
OK
Check trouble symptoms.
Check the following connectors:
D-06, D-31, D-226
Is the center display operated normally?NoCarry out troubleshooting for the center display. (Refer to
GROUP 54A – Center Display.)
Inspection Procedure Q-1
Check the circuit (power supply line) from the battery to
the ETACS-ECU.Probable cause
If that power supply circuit is defective, the circuit flowing through the ignition
switch (IG1) will function as a back-up circuit. In this case, the following
functions will not work when the ignition switch is at LOCK (OFF) position.
DIgnition key reminder warning buzzer function
DCentral door lock ing system
DIgnition key hole illumination lamp
DHazard warninglamp
DRoom lampDMalfunction of ETACS-ECU
DMalfunction of harness wire or connector.
NG
NG
Repair
NG
Check the harness wire between ETACS-ECU and fusible link
(2).
OK
Replace the ETACS-ECU.
OK
Check trouble symptoms.
Check the following connectors:
D-224, D-223, D-27Measure at ETACS-ECU connector D-224.
DDisconnect connector and measure at J/B side.
DVoltage between terminal 6 and body earth.
OK:System voltage


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C
HEC K AT EC U TE R M IN ALS
1 . ETA CS-E C U C
heck it e m s C
heckin g re quir e m ents N
orm alco ndit io n 1 R
ear w ip er outp ut W
hen re ar w ip er is opera te d S
yste m vo lt a ge 2 I
g nit io n sw it c h (A C C)pow er su pply I
g nit io n sw it c h : A C C S
yste m vo lt a ge 3 R
ear w ash er outp ut W
hen re ar w ash er is opera te d S
yste m vo lt a ge 4 D
oor lo ck outp ut W
hen th e door lo ck actu ato rs are
w ork in g to lo ck S
yste m vo lt a ge 5 R
ear w ip er auto -s to p sig nalin put W
hen re ar w ip er is opera te d S
yste m vo lt a ge 6 B
atte ry pow er su pply (fo r E C U) A
lw ays S
yste m vo lt a ge 7 D
oor sw it c h es sig nalin put E
it h er door sw it c h : O N (D oor open) 0
V 8 P
ow er w in dow re la y outp ut W
hen pow er w in dow ca n be opera te d 2
V or le ss 9 D
riv e r’s door sw it c h sig nalin put D
riv e r’s door sw it c h :O N (D riv e r’s door
o pen) 0
V 1
1 B
atte ry pow er su pply (fo r tu rn -s ig nal
l a m p) A
lw ays S
yste m vo lt a ge 1
2 B
atte ry pow er su pply (fo r ce ntr a l door
l o ck) A
lw ays S
yste m vo lt a ge 1
4 T
urn -s ig nalla m p (R .H .) outp ut W
hen tu rn -s ig nalla m p (L .H .) is lig hte d S
yste m vo lt a ge 1
5 T
urn -s ig nalla m p (L .H .) outp ut W
hen tu rn -s ig nalla m p(R .H .) is lig hte d S
yste m vo lt a ge 1
6 I
g nit io n sw it c h (IG 1) pow er su pply I
g nit io n sw it c h : O N S
yste m vo lt a ge 1
7 D
oor unlo ck outp ut W
hen door lo ck actu ato rs are work in g
t o unlo ck S
yste m vo lt a ge 1
8 R
oom la m p outp ut W
hen ro om la m p is lig hte d 2
V or le ss 2
0 G
ro und (fo r E C U) A
lw ays 0
V 2
1 S
W S co m munic a tio n lin e A
lw ays 0
-12 V (p uls e
s ig nal) 2
2 D
ia gnosis in dic a tio n se le ctio n in put W
hen M UT-II is co nnecte d 0
V 2
3 G
ro und (fo r se nso r) A
lw ays 0
V 2
4 F
ro nt fo g la m p sw it c h sig nalin put F
ro nt fo g la m p sw it c h :O N 0
V 2
5 R
ear fo g la m p sw it c h sig nalin put R
ear fo g la m p sw it c h : O N 0
V

SWS -Troubleshooting54B-55
Terminal
No.Normal condition Checking requirements Check items
26Key reminder switch signal inputKey reminder switch: ON (Ignition key
removed)0V
27Hazard warning lamp switch signal
inputHazard warning lamp switch: ON0V
29Recognition line of daytime running
lamp (DRL) Always0V
31Data request signal outputAlways0 - 5 V (pulse
signal)
34Windshield intermittent wiper interval
adjusting knob signal inputIgnition switch: ACC,
Windshield intermittent wiper interval
adjusting knob: FAST®SLOW0®2.5 V
35Back-up lamp switch signal input
Ignition switch: ON,
Shift lever: RSystem voltage
Inhibitor switch (reverse) signal input
Ignition switch: ON,
Selector lever: RSystem voltage
36Ignition key hole illumination lamp
outputWhen ignition key hole illumination
lamp is lighted2 V or less
37Diagnosis code or input signal check
outputWhen diagnosis code is output0 - 12 V (pulse
signal)
When input signal check is output0, 12 V (When input
pulse signal is
changed)
40Rear fog lamp relay outputWhen rear fog lamp is lighted2 V or less
53Front passenger’s and back door lock
key cylinder switch (LOCK) signal inputFront passenger’s or back door lock key
cylinder switch: LOCK0V
54Front passenger’s and back door lock
key cylinder switch (UNLOCK) signal
inputFront passenger’s or back door lock
switch: UNLOCK0V
55Driver’s door lock actuator switch
(LOCK) signal inputDriver’s door lock actuator switch:
LOCK0V
56Driver’s door lock actuator switch
(UNLOCK) signal inputDriver’s door lock actuator switch:
UNLCOK0V


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C
heck it e m s C
heckin g re quir e m ents N
orm alco ndit io n 1 B
atte ry pow er su pply A
lw ays S
yste m vo lt a ge 2 D
ata re quest sig nalin put A
lw ays 0
-12 V (p uls e
s ig nal) 3 S
W S co m munic a tio n lin e A
lw ays 0
-5 V (p uls e
s ig nal) 4 G
ro und A
lw ays 0
V 6 W
in dsh ie ld in te rm it te nt wip er in te rv a l
a dju stin g kn ob sig nalo utp ut I
g nit io n sw it c h : A C C,
W in dsh ie ld in te rm it te nt wip er in te rv a l
a dju stin g kn ob:F A ST ® SLO W 0
® 2.5 V 8 W
in dsh ie ld wip er sw it c h backu p outp ut W
in dsh ie ld lo w -s p eed wip er sw it c h or
w in dsh ie ld hig h-s e ed wip er sw it c h :O N 0
V 9 I
g nit io n sw it c h (IG 1) pow er su pply I
g nit io n sw it c h : O N S
yste m vo lt a ge 1
0 H
eadla m p sw it c h backu p outp ut H
eadla m p sw it c h : O N 0
V C
heck it e m s C
heckin g re quir e m ents N
orm alco ndit io n 1 F
ro nt fo g la m p re la y outp ut W
hen fr o nt fo g la m p is lig hte d 2
V or le ss 2 H
eadla m p (h ig h-b eam )outp ut W
hen headla m p(h ig h-b eam )is lig hte d S
yste m vo lt a ge 3
, 4 B
atte ry pow er su pply (fo r headla m p) A
lw ays S
yste m vo lt a ge 5 B
atte ry pow er su pply (fo r ta il la m p) A
lw ays S
yste m vo lt a ge 6 H
eadla m p (lo w -b eam )outp ut W
hen headla m p (lo w -b eam )is lig hte d S
yste m vo lt a ge 7 B
atte ry pow er su pply (fo r E C U) A
lw ays S
yste m vo lt a ge 8 T
a il la m p outp ut W
hen ta il la m p is lig hte d S
yste m vo lt a ge 9 B
atte ry pow er su pply (fo r headla m p
w ash er) A
lw ays S
yste m vo lt a ge 1
1 H
eadla m p wash er outp ut W
hen headla m p wash er is opera te d S
yste m vo lt a ge 2
1 W
in dsh ie ld wash er outp ut W
hen win dsh ie ld wash er is opera te d S
yste m vo lt a ge

2
2 S
W S co m munic a tio n lin e A
lw ays 0
-12 V (p uls e
s ig nal) 2
3 W
in dsh ie ld wip era uto -s to p sig nalin put W
hen win dsh ie ld wip er is opera te d S
yste m vo lt a ge 2
4 I
g nit io n sw it c h (A C C)pow er su pply I
g nit io n sw it c h : A C C S
yste m vo lt a ge 2
5 H
eadla m p sw it c h backu p in put H
eadla m p sw it c h : O N 0
V 2
6 W
in dsh ie ld wip er backu p in put W
in dsh ie ld lo w -s p eed wip er sw it c h or
w in dsh ie ld hig h-s p eed wip er sw it c h :
O N 0
V 2
7 W
in dsh ie ld wip er (lo w -s p eed) outp ut W
hen win dsh ie ld wip er is opera te d (a t
l o w -s p eed) S
yste m vo lt a ge 2
8 W
in dsh ie ld wip er (h ig h-s p eed) outp ut W
hen win dsh ie ld wip er is opera te d (a t
h ig h-s p eed) S
yste m vo lt a ge 3
0 I
g nit io n sw it c h (IG 2) pow er su pply I
g nit io n sw it c h : O N S
yste m vo lt a ge 3
1 G
ro und A
lw ays 0
V C
heck it e m s C
heckin g re quir e m ents N
orm alco ndit io n 1 P
ow er su pply P
ow er w in dow re la y: O N S
yste m vo lt a ge 3 S
W Sco m munic a tio n lin e (b etw een th e
m ain sw it c h and th e pow er win dow
m oto r) P
ow er w in dow re la y: O N 0
-12 V (p uls e
s ig nal) 4 S
W Sco m munic a tio n lin e (b etw een th e
m ain sw it c h and th e ETA C S-E C U) A
lw ays 0
-12 V (p uls e
s ig nal) 5 G
ro und A
lw ays 0
V

C
heck it e m s C
heckin g re quir e m ents N
orm alco ndit io n 1 S
W Sco m munic a tio n lin e (b etw een th e
m ain sw it c h and th e pow er win dow
m oto r) P
ow er w in dow re la y: O N 0
-12 V (p uls e
s ig nal) 3 G
ro und A
lw ays 0
V 5 P
ow er su pply P
ow er w in dow re la y: O N S
yste m vo lt a ge 7 S
W Sco m munic a tio n lin e (b etw een th e
m ain sw it c h and th e ETA C S-E C U) A
lw ays 0
-12 V (p uls e
s ig nal) C
heck it e m s C
heckin g re quir e m ents N
orm alco ndit io n 1 G
ro und A
lw ays 0
V 2 P
ow er win dow su b sw it c h (D O W N)
s ig nalin put < E xce pt driv e r’s door> P
ow er w in dow su b sw it c h : D O W N 0
V 3 P
ow er su pply P
ow er w in dow re la y: O N S
yste m vo lt a ge 4 P
ow er w in dow su b sw it c h (U P) sig nal
i n put < E xce pt driv e r’s door> P
ow er w in dow su b sw it c h : U P 0
V 6 S
W Sco m munic a tio n lin e (b etw een th e
p ow er main sw it c h and th e pow er
w in dow moto r) P
ow er w in dow re la y: O N 0
-12 V (p uls e
s ig nal)