MITSUBISHI TRITON 1997 Workshop Manual

C
O M BIN ATIO N M ETE R S 54300290125
R EM OVA L A ND IN STA LLA TIO N

M
ark in gs E
arth ( ± ) F
uel g auge
( F U )

E
arth ( ± ) P
ow er
s u pply ( + )

CHASSIS ELECTRICAL ± Multi-Meter54-35
MULTI-METER54300720266
TROUBLESHOOTING
INSPECTION CHART FOR TROUBLE SYMPTOMS
Trouble symptomInspection procedure No.Reference page
Actual outside temperature is different from
thermometer.154-35
Outside temperature is not displayed.254-36
INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS
Inspection Procedure 1
Actual outside temperature is different from thermometer.
Probable cause
The defective internal resistance of the thermo sensor or thermometer may be present.
Malfunction of outside thermo sensor

Malfunction of harness or connector

Malfunction of thermometer
OK
Check trouble symptom.NGCheck the harness between outside
thermo sensor and multi-meter. Repair
if necessary.
OK
Replace the thermometer.
OK
Measure at the multi-meter connector
C-45.

Connect the connector and measure
voltage of the sensor at the following
temperature.

Voltage between terminals (5) ± (13)
OK:3.42 V (when display tempera-
ture is 0C)
2.46 V (when display tempera-
ture is 20C)
1.61 V (when display tempera-
ture is 40C)NGCheck the following connectors:
A-25, C-01, C-44, C-45NG
Repair
Check internal resistance of the thermo
sensor. (Refer to P.54-38.)NG
Replace

P
ro bab le c au se O
K C
heck tr o uble s ym pto m . N
G C
heck th e h arn ess w ir e b etw een ju nc-
t io n b lo ck ( IG 1) a nd th erm om ete r. R e-
p air if n ece ssa ry . O
K 2
. NG C
heck tr o uble s ym pto m . N
G C
heck th e h arn ess w ir e b etw een th er-
m om ete r a nd b ody e arth . R epair if n ec-
e ssa ry . C
heck tr o uble s ym pto m . N
G C
heck th e h arn ess b etw een th erm om e-
t e r a nd o uts id e th erm o s e nso r. R epair
i f n ece ssa ry . N
G
Rep air R
epla ce th e th erm om ete r. M
easu re a t th e m ult i- m ete r c o nnecto r
C -4 5.

Dis co nnect th e c o nnecto r a nd
m easu re a t th e h arn ess s id e.
1 . Volt a ge b etw een te rm in al ( 1 1 ) a nd
e arth
O K: Syste m v o lt a ge
2 . Contin uit y b etw een te rm in al ( 3 ) a nd
e arth
O K: Contin uit y 1
. NG C
onnect a c ir c u it te ste r to th e b atte ry .
( S ee fig .1 ) T
he v o lt m ete r n eedle o f th e m ult i- m ete r
s w in gs. O
K T
he v a lu es in dic a te d b y th e c ir c u it te ste r
n eedle a nd th e n eedle o f th e m ult i- m ete r
v o lt m ete r a re a lm ost id entic a l. N
G R
epla ce th e v o lt m ete r o f th e m ult i- m ete r. N
G R
epair th e h arn ess o r r e pla ce th e v o lt -
m ete r o f th e m ult i- m ete r. O
K
N orm al

M
ULT I- M ETE R 54300390023
R EM OVA L A ND IN STA LLA TIO N

S
ta ndard v a lu e I
n te rn al r e sis ta nce o f o uts id e th erm o s e nso r W A
ppro x. 1 ,2 00 A
t 4 0
C A
ppro x. 5 00 D
ry e r S
enso r

S
ta ndard v a lu e L
im it H
eadla m p a im in g fo r lo w b
eam V
ertic a l d ir e ctio n 6
0 m m b elo w h oriz o nta l ( H ) ±
b
eam H
oriz o nta l d ir e ctio n P
osit io n w here th e 1 5
s lo pin g s e ctio n
i n te rs e cts th e v e rtic a l lin e ( V ) ±
H
eadla m p in te nsit y c d ± 3
0,0 00 o r m ore N
um ber N
am e U
se M
B991502 M
UT-II s u b a s-
s e m bly E
TA C S-E C U in put s ig nal c h eckin g M
B991223
A : MB991219
B : MB991220
C : MB991221
D : MB991222 H
arn ess s e t
A : Te st h arn ess
B : LE D h arn ess
C : LE D h arn ess
a dapte r
D : Pro be M
akin g v o lt a ge a nd r e sis ta nce m easu re m ents
d urin g tr o uble sh ootin g
A : Connecto r p in c o nta ct p re ssu re in sp ectio n
B , C : Pow er c ir c u it in sp ectio n
D : Com merc ia l te ste r c o nnectio n

T
R O UBLE SH O OTIN G 54200900025
T he s p ecia l to ol ( M B991223) s h ould a lw ays b e u se d to m easu re v o lt a ges a nd r e sis ta nce s w hen c a rry in g
o ut tr o uble sh ootin g.
DIA G NO SIS F U NCTIO N
I N PU T S IG NAL IN SPEC TIO N P O IN TS
< V EH IC LE S W IT H E TA CS-E C U>
1 . Connect th e M UT-II to th e d ia gnosis c o nnecto r.
2 . If b uzze r o f th e M UT-II s o unds o nce w hen a s w it c h is
o pera te d ( O N/O FF), th e E TA C S-E C U in put s ig nal fo r th at
s w it c h c ir c u it s yste m is n orm al.
I N SPEC TIO N C HART F O R T R O UBLE S YM PTO M S 54200910042
T ro uble s ym pto m s I
n sp ectio n
p ro ce dure R
efe re nce
p age C
om munic a tio n w it h M UT-II is im possi-
b le . < V ehic le s w it h E TA C S-E C U> C
om munic a tio n w it h a ll s yste m s is
i m possib le . 1 5
4-4 1 C
om munic a tio n w it h o ne-s h ot p uls e in put
s ig nal o nly is im possib le . 2 5
4-4 1 T
he lig htin g m onit o r b uzze r d oesn 't s o und u nder th e fo llo w in g c o ndit io ns w hile ta il
l a m ps o r h eadla m ps illu m in ate .

When th e ig nit io n s w it c h is tu rn ed to O FF a nd th e d riv e r's s id e d oor is o pen. 3 5
4-4 1 H
eadla m p le ve lin g d oes n ot o ccu r w hen th e h eadla m p le ve lin g s w it c h is o pera te d. 5 5
4-4 3 T
he h eadla m ps d o n ot illu m in ate w hen th e v e hic le is in th e fo llo w in g c o ndit io n a nd th e
i g nit io n s w it c h is a t th e O N p osit io n. H ow eve r, th e h eadla m ps illu m in ate w hen th e
l ig htin g s w it c h is m ove d to th e H EAD p osit io n.
< V ehic le s w it h d aytim e r u nnin g la m p s yste m >

Lig htin g s w it c h : O FF

Passin g s w it c h : O FF 6 5
4-4 4 T
he h eadla m ps d o n ot s w it c h o ff w hen th e v e hic le is in th e fo llo w in g c o ndit io n a nd th e
l ig htin g s w it c h is m ove d to th e T A IL p osit io n.
< V ehic le s w it h d aytim e r u nnin g la m p s yste m >

Ig nit io n s w it c h : O FF

Passin g s w it c h : O FF 7 5
4-4 5

CHASSIS ELECTRICAL ± Headlamp54-41
INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS
Inspection Procedure 1
Communication with MUT-II is impossible.
(Communication with all systems is impossible.)
Probable cause
The cause is probably a defective power supply system (including earth) for the
diagnosis line.
Malfunction of connector

Malfunction of harness wire
Refer to GROUP 13A ± Troubleshoot-
ing.
Inspection Procedure 2
Communication with MUT-II is impossible. (Communica-
tion with the one-shot pulse input signal only is
impossible.)
Probable cause
The cause is probably a defective one-shot pulse input circuit system of the diagnosis
line.
Malfunction of connector

Malfunction of harness wire

Malfunction of ETACS-ECU
Check the harness wire between the
diagnosis connector and ETACS-ECU.OKCheck the following connectors:
C-35, C-90NG
Repair
NG
RepairOK
Check trouble symptom.NGReplace the ETACS-ECU.
Inspection Procedure 3
The ignition switch is turned to the OFF position and the
driver's side door is opened while the tail lamps or
headlamps are operating, but the light reminder warning
buzzer does not sound.
Probable cause
The cause is probably a defective lighting switch input circuit system or a defective
driver's side door switch input circuit system.
Malfunction of driver's side door switch

Malfunction of harness or connector

Malfunction of buzzer-ECU or ETACS-ECU
Driver's side door switch input circuit
system check
(Refer to Inspection Procedure 4.)
OK
Check the following connectors:
A-55X, C-81, C-91NG
Repair
OK
Check trouble symptom.NGCheck the harness wire between the
junction block and tail lamp relay.OKReplace the buzzer-ECU or ETACS-
ECU.
NG
Repair