1975 Datsun 280z FSM - Spooled up Racing
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1975 Datsun 280z FSM - Spooled up Racing

1975 Datsun 280z FSM - Spooled up Racing

1975 Datsun 280z FSM - Spooled up Racing

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Body Electrical System<br />

SEAT SWITCH<br />

Replacement<br />

The seat switch is located in both<br />

driver's and passenger's seats. This<br />

switch is an integral part of seat.<br />

Replacement is carried out as a seat<br />

assembly.<br />

1. Remove four bolts securing seat<br />

to body.<br />

2. Lifting seat, disconnect lead wires<br />

at connector.<br />

3. Take out seat and install new seat<br />

in the reverse sequence of removal.<br />

1 From driver's seat S/W<br />

2 For driver's belt S/W<br />

3 From assistant's seat S/W<br />

4 For assistant's seat S/W<br />

5 From battery<br />

6 From ignition S/W<br />

7 From interlock relay<br />

8 For battery<br />

9 From driver's seat S/W<br />

10 From assistant's seat S/W<br />

11 For neutral S/W or relay<br />

12 For voltage regulator<br />

Use in checking (E><br />

BE175A<br />

Fig. BE-151 Interlock unit<br />

Seat switch<br />

1. Disconnect interlock unit lead<br />

wires at connectors.<br />

Note: There are eight big connectors<br />

and three small connectors. They<br />

are for intermittent wiper amplifier,<br />

horn relay, defogger relay, air-con<br />

relay, interlock unit and catalyzer<br />

hold relay (California model).<br />

2. Remove seat belt fastener securing<br />

bolt.<br />

3. Disconnect lead wire for belt<br />

switch at connector.<br />

4. Seat belt fastener can then be<br />

taken out.<br />

5. Installation is in the reverse sequence<br />

of removal.<br />

BE638A<br />

Fig.BE-153 Seat switch<br />

2. Remove three screws retaining<br />

relay bracket to dash side panel and<br />

take out relay bracket with relays.<br />

3. Remove two screws retaining<br />

interlock unit to dash side panel. Unit<br />

can then be taken out easily.<br />

4. Installation is in the reverse sequence<br />

of removal.<br />

Inspection<br />

Test continuity between two lead<br />

wires from seat belt switch with ohmmeter<br />

or test lamp. When the seat belt<br />

is fastened, there must not be continuity<br />

between lead wires. Conversely,<br />

there must be continuity when released.<br />

Inspection<br />

Test continuity with ohmmeter or<br />

test lamp. When <strong>up</strong>per face of seat is<br />

pressed, there must be continuity between<br />

two lead wires. Conversely,<br />

there must not be continuity between<br />

two lead wires when released.<br />

BELT SWITCH<br />

Replacement<br />

The belt switch is an integral part<br />

of seat belt fastener so switch and seat<br />

belt fastener must be replaced as an<br />

assembly.<br />

1. Slide the seat forward at its full<br />

stroke.<br />

BE176A<br />

Fig. BE-152 Seat belt switch<br />

BE-93<br />

NEUTRAL SWITCH<br />

(Manual transmission)<br />

Replacement<br />

The neutral switch is located on<br />

rear extension of transmission and is<br />

connected to the lead wires colored<br />

green with black stripe and green with<br />

white stripe.

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