1975 Datsun 280z FSM - Spooled up Racing

Body Electrical System
Warning buzzer
Apply 12V direct current between
©-(§) or (2)-(f) and check whether
buzzer sounds or not. The buzzer must
sound when ©-(f) and (2)-(3) are
connected to power circuit. See Figure
BE-141 warning buzzer.
Note: Make sure that © negative
terminal of power circuit is always
connected to (3) terminal.
INSPECTION
Door switch
There are three lead wires from
door switch. Two are for warning
buzzer and other is for room lamp.
BE164A
Fig. BE-141 Buzzer
Inspect continuity through door
switch with test lamp or ohmmeter.
When plunger is pressed into switch
assembly, door switch contacts are
opened. Contacts are closed when
plunger is projected. See Figure
BE-138 door switch.
Ignition switch
Test continuity between two harnesses
©-© indicated in Figure
BE-139. There must be continuity
when key is inserted into switch. On
the other hand, continuity must be
broken, when key is removed from
ignition switch.
Circuit
Test continuity through the circuit
with ohmmeter or test lamp. The
whole circuit is described below in
detail.
BE-81