Mitsubishi 3000GT Service Manual page 1144

Harness side connector
Short bar
(Press-fitted terminal
I I
Press-fitted tab terminals
To body wiring harness (14-pin)
To clock spring
Short terminal (open)
I
Short terminal
SRS - General Information
FIT VERIFICATION MECHANISM
Secondary
lock lever The mechanism is used to electrically check the engagement
of the connector between the SRS diagnosis unit and the
body wiring harness. The operating principle is described
below.
(1) Securely connect the SRS diagnosis unit and harness
to lock the connectors.
(2) At this time, the short bar provided on the rear surface
of the secondary lock lever produces a short circuit across
terminals No. (7) and (8) of the SRS diagnosis unit. The
circuit to electrically verify that the connectors have been
locked.
CONNECTOR SHORTING MECHANISM
The mechanism is designed for prevention of accidental igni-
tion of the inflator when the clock spring connector (for the
squib circuit) is removed from the SRS diagnosis unit. The
operating principle is described below.
00002558
When Connectors Are Fitted
When the SRS diagnosis unit and clock spring connectors
are coupled, the circuit between the short terminals and clock
spring connector terminals is kept in the OFF state by the
partition plate provided in the connector of the SRS diagnosis
unit.
When Connectors Are Disconnected
When the clock spring connectors are disconnected from
the SRS diagnosis unit, the partition plate between the short
terminals and clock spring connector terminals is removed.
As a result, a short circuit is formed between the two poles
of the clock spring connector terminals to prevent generation
of a potential difference (current) between the squib terminals.
TSB Revision