Mitsubishi 3000GT Workshop Manual Supplement page 47

SRS
-
Troubleshooting
528-9
Gode No.42
lcl
(B) power
circuit system
Probable cause
This diagnosis code
is
output
if
the voltage between the
lG1
(B) terminal and the
earth is lower than the specified value for
a
continuous period of
5
seconds or more.
However, if the vehicle condition returns to normal, diagnosis code
No.42 will be
automatically erased, and
the
SRS warning lamp will switch off.
.
Malfunction of
wiring
hamesses or connectors
SRS check harness
Measure at SRS check
harness
connector (5).
o
Disconnect
SRS-ECU
connector D-51.
.
Connect
SRS
check
harness
connector (3).
o
Continuity
between terminals
(20) and (21)
OK:
Continuity
Check
the
following
connectors:
C-74.C-78 and
D-51
Check
the
harness
wire
between
the
SRS-ECU and eafth,
ard
repair if necessary.
Measure at SRS check hamess connector (5).
o
Disconnect SRS-ECU connector
D-51
. .
Connect SRS check harness connector (3).
o
Connect negative battery cable
.
lgnition switch: ON
o
Voltage between terminal (13) and body earth
OK:
9Vormore
Check
the
following
connectors:
C-79
and
D-51
Check the harness wire between the
SRS-ECU
and
ignition
switch lG1, and repair if necessary.
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