MG MGB - Page 317

THE ELECTRICAL SYSTEM
3NC
977
Fig. Na.7
Sequential
seat
belt
system
control
unit
1.
Warning buzzer,
3.
Wiring harness plug.
2.
Retaining
tags.
4.
Control
unit.
Section Na.10
TESTING THE SEQUENTIAL SEAT
BELT SYSTEM
Test conditions
(1) Batteries in
good condition.
(2)
500 milliamp. line fuse
and the
35-amp.
fuse
con-
necting fusebox
terminals
5
and
6
in
good condition.
(3)
Gear
lever
in neutral position.
(4)
Hand brake applied.
(5)
Compress the
two
retaining
tags
(see Fig.
Na.8)
on
the
front of
the
seat
belt
system
control unit
and disconnect the
wiring
harness plug from
the
control unit.
MGB. Issue 2. 85699
Sequential
seat
belt
system
control
unit wiring
harness plug
pin
identi■cation
numbers.
The
arrows
indicate the plug
polarizing
keys.
Compress the
two
retaining
tags
(1)
to
withdraw the plug
from
the control
unit.
Control unit
The control unit is
proven
by substitution.
Switches
and circuit wiring
Referring
to
Figs.
Na.8 and
Na.9
for circuit
diagram
and wiring
harness plug pin
identi■cation
numbers,
carry
out
the following
test
procedure, using
a
12-volt
2-2-watt
test
lamp
and
a
length
of
insulated cable.
Na.9