Mitsubishi Eclipse 1990 Service Manual page 2019

Code No. 43 warning light drive circuit system
(Light does not illuminate.)
[Comment]
This diagnostic trouble code is output when an open circuit occurs for a continuous
period of 5 seconds while the SRS-ECU is monitoring the SRS warning light and
the light is OFF (transistor OFF).
However, if this code is output due to an open circuit, if the vehicle condition returns
to this diagnostic trouble code will be automatically erased, and the SRS
light will switch off.
Battery cable
SRS check harness
OK
Ignition switch: ON
Connect terminal (15) to the body ground.
OK: Light illuminates
SRS
Caution
Turn the ignition key to the "LOCK"
the negative battery cable and tape the
Wait at least 60 seconds after disconnecting the battery
cable before doing any further work. (Refer to
Measure at SRS check harness
connector (5).
Disconnect SRS-ECU connector
Connect SRS check harness
connector (3).
between terminals (20)
OK: Continuity
TSB Revision
Probable cause
of harnesses or connectors
bulb
Malfunction of
Malfunction of combination meter
OK
[Check trouble symptom.