Mitsubishi 3000GT 1991, Service Manual

Page: 1058 / 1146

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Troubleshooting
MB991 349
SRS Check Harness
SDU
connector
(red)
View A
SRS Check Harness
connector
SRS
warning light Ground
(5) Connect the now disconnected red harness-side SDU
connector to the connector of the SRS Check
Harness.
(6) Check according to the flow chart below, using the digital
multi-meter.
r
No
Is there continuity between the No. 19
or No. 20 terminal of SRS Check
! - -
Ground circuit open
Harness connector and ground?
Yes
Reconnect negative terminal of
No. 19 or 20 terminal (ground) and the
the Check Harness connector
Yes
Malfunction of the SDU
Turn the ignition key
to the “LOCK” po-
sition, disconnect
the negative battery
cable and tape the
terminal.
(2) After waiting at least
30 seconds, replace
the bulbs, repair or
replace the body wir-
ing
to
Turn the ignition key
to the “LOCK” po-
sition, disconnect
the negative battery
cable and tape the
terminal.
After waiting at least
30 seconds, replace
the SDU. (Refer to
NOTE IMPORTANT
(1) After repairing the SRS, reconnect the battery cable, erase the diagnosis code memory from the
Multi-use Tester and check the SRS warning light operation to verify the system functions
properly. (Refer to TEST 1.)
(2) SDU SRS Diagnosis Unit
TSB Revision