Mitsubishi 3000gt 1997 - SRS WARNING LAMP CIRCUIT DIAGNOSIS

52B-10
SRS
-
Troubleshooting
Code
No.43
SRS
warning
lamp
drive
circuit
system
(Lamp does
not
illu
Probable
cause
This diaonosis
code
is output
when
an
open
circuit
o_ccurs
for a
continuous
period ol
i';il;il;hitil[e
SnsEcu
in
monitoring
rhe
sBS
warning
ramp
and
the
lamp
is
OFF
(transistor
OFF).
ii,*duJi,iilhis
code!
is output
due
to
an
open
circuit,
if
the
vehicle
condition
returns
iJrioimli,
this
diagnosis
coOJ
f.rf o.+S
will b'e
automatically
erased,
and
the SRS
warning
lamp
will
return
to
normal.
.
Malfunction
oi
wiring
harnesses
or connectors
o
Blown
bulb
.
Malfunction
of SRS-ECL
o
Malfunction
of combination
meter
rd
,lti
Check
the
following
connectors:
C-74,C-78
and
D-51
Measure
at
SRS
check
harness
connector
(5).
.
Disconnect
SRS-ECU
connector
D-51.
o
Connecl
SRS
check
harness
connector
(3).
o
Continuity
between
terminals
(20)
and
(21)
OK:
Continuity
SRS
check
harness
(MB991613)
Check
the
harness
wire
between
the
SRS-ECU
and
earth,
and
repair
if necessary.
Measure
at
SRS
check
harness
connector
(5)'
.
Disconnect
SRS-ECU
connector
D-51.
o
Connect
SRS
check
harness
connector
(3)'
.
lonition
switch:
ON
o
Connect
negative
battery
cable
,
.
Connect
terminal
(15)
to
the
body
eann.
OK:
LamP
illuminates
Check
the
lollowing
connectors:
c-13,
c-68,
C-78,
D-04
and
D-05
ReDlace
the
SRS-ECU
Check
the
harness
wire
between
the SRS-ECU
and
ignition
switch
(lGr).
Replace
the
combination
meter.
q