Mitsubishi 3000GT Workshop Manual Supplement page 48

528-10
SRS -
Troubleshooting
Code No.43 SRS
warning
lamp drive
circuit system
(Lamp does not illuminate.)
Probable cause
This diagnosis code is output when an open circuit occurs for a continuous period
of
5 seconds while the SRS-ECU in monitoring the SRS
waming lamp and the lamp is
OFF (transistor OFF).
However, if this
code
is
output due to an open circuit,
if
the vehicle c.ondition returns
to normal, this diagnosis code No.43 will be automatically erased, and
the SRS
waming lamp will relurn to normal.
Mallunclion
of wiring hamesses or connectors
Blown bulb
Mallunction
of SRS-ECU
Malfunction of combination meter
o
o
a
a
SRS check harness
Measure at SRS check
harness
connector
(5).
o
Disconnect
SRS-ECU
connector
D-51.
o
Connect
SRS
check hamess
connector (3).
o
Continurty between lerminals
(20) and (21)
OK:
Continuity
Check
thc
lollowing
connectots:
C-74,C-78 and
D-51
Check
the hamess wire
between
the
SRS-ECU
and
earth,
and
repair if necessary.
Measure at SRS check hamess
connector
(5).
o
Disconnect SRS-ECU connector D-51.
.
Connecl
SRS
check
hamess connector (3).
.
lgnition switch: ON
.
Connect negative battery cable
o
Connect terminal
(15) to the body eadh.
OK:
Lamp illuminales
Check
the
following
conn€ctorg:
c-l3,
C-68, C-78,
D-04
and
D-05
Check
the harness wire
between the
SRS-ECU
and
ignition
switch
(lcr).
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