fuse box NISSAN PULSAR 1987 Workshop Manual

Cooling and Heating Systems 73
(1) Renew all hoses that show signs of cracking
or perishing.
(2) Before finally tightening the hose clips, en-
sure that the hoses are push ed fully onto the radiator
and are not kinked. (3) On automatic transaxle models, ensure that
the oil cooler hoses are correctly installed to the
radiator and show no signs of leakage. Check and top
up the automatic transaxle fluid as necessary.
5. COOLING FAN
The radiator cooling fan is controlled by the
electronic control unit, and on vehicles with air
conditioning, the condenser fan relay. On vehicles
with air conditioning there are two cooling fans, one
is larger than the other. The large fan is for the
radiator and the smaller fan provides extra cooling
when the air conditioning is activated. Each fan is
controlled by a separate system.

TO TEST COOLING FAN AND SYSTEM
(1) With the cooling system cold and the air
conditioning, if applicable, switched off, switch the
ignition On and confirm that the cooling fan is
stationary.

NOTE: Leave the ignition On for all tests
unless otherwise stated.

(2) In the above test, if the cooling fan rotates,
proceed as follows:

(a) Disconnect the cooling fan relay from the
rear of the engine compartment relay box.
(b) If the fan stops, backprobe terminal C1 at
the electronic control unit using an LED test lamp
connected to the positive battery terminal. If no
circuit exists, renew the cooling fan relay.

View showing the location of the diagnostic link
connector. Passengers seat removed for clarity.
If a circuit exists, check the wiring harness
between the electronic control unit and the relay for
short circuits to earth and repair if necessary. If no
short circuit is present renew the electronic control
unit.


Schematic layout of the cooling fan, coolant temper-
ature sensor and related electrical components.

Installed view of the engine compartment relays. KEY

1. To Battery
2. Fusible link
COLOUR CODE
3. Fusible link
B-Black
4. Fusible linkL- Blue
5. I
gnition relayY- Yellow
6. Fuse 20 am
pW-White
7. Coolin
g fan relayO-Orange
8. Coolin
g fan
9. Coolant tem
perature
sensor
10. To air conditionin
g
fan rela
y
11. To throttle
position
sensor
12. Control unit

Electrical System 207

Disconnect the wiring connectors from the
rear of the combination switch.
Loosen the clamping screw located at the left
hand side of the combination switch. Push, turn and slide the combination switch
from the steering column. Installation is a reversal of the removal procedure.

REAR WINDOW DEMISTER
SWITCH/HAZARD WARNING LAMP SWITCH

To Remove and Install
Disconnect the negative battery terminal.
Using two small flat bladed screwdrivers,
carefully lever the edges of the switch forward to
release it from the instrument cluster surround.
Withdraw the switch from the surround and
disconnect the switch wiri ng at the connectors.
Installation is a reversal of the removal procedure.


View of the hazard warning switch removed from the
instrument cluster surround.
DOOR LOCKS AND POWER WINDOW
SWITCHES

To Remove and Install
Disconnect the negative battery terminal.
Loosen the retaining screws securing the
armrest to the door. Using a small flat bladed screwdriver, care-
fully lever the front edge of the switch panel up and
maneuver the switch forward and away from the
armrest. Disconnect the wiring connector and remove
the switch from the armrest. Installation is a reversal of the removal procedure.

POWER MIRRORS AND INSTRUMENT
ILLUMINATION SWITCHES

To Remove and Install
Disconnect the negative battery terminal.
Using two small flat bladed screwdrivers,

View of the power mirror switch removed from the
vehicle.
carefully lever the edges of the switch forward to
release it from the fascia lo cated directly above the
fuse box.

(3) Withdraw the switch from the fascia and
disconnect the wiring.

Installation is a reversal of the removal procedure.
REAR WINDOW WIPER/WASHER SWITCH
To Remove and Install
Disconnect the negative battery terminal.
Using two small flat bladed screwdrivers,
carefully lever the edges of the switch forward to
release it from the instrument cluster surround. Withdraw the switch from the surround and
disconnect the wiring.
Installation is a reversal of the removal procedure.


View of the rear window wiper/washer switch re-
moved from the vehicle.

Electrical System 215
Ensure that the wiper motor is in the Park
position before installing the wiper arm. If in doubt,
turn the wiper switch to the Off position and turn the
ignition switch to the On position until the wiper
motor stops.
Install the wiper arm to the pivot so that the
wiper blade is horizontal to the lower edge of the edge
of the rear window when in the Park position.
17. FUSES, FUSIBLE LINKS AND RELAYS

TO CHECK AND RENEW FUSE
NOTE: If a fuse is found to be faulty or
burnt out, use a replacement fuse of the
specified amperage only. The specified amp-
erage is marked on the fuse.

The use of a higher amperage fuse than
that specified could cause damage to the
vehicle wiring harness.

The fuses are mounted in a fuse box
located in the lower right hand corner of the
dashboard.

Remove the cover from the lower right hand
corner of the dashboard and using the information
marked on the fuse box, locate the fuse protecting the
circuit at fault. Pull the fuse out of the fuse box and inspect
it for serviceability.
Should the fuse appear to be in a serviceable
condition, test its continuity with an ohmmeter or test
lamp. Should the fuse be faulty or burnt out,
install
a new fuse of the same amperage. If the circuit is still inoperative or the fuse
burns out again, test the circuit as previously de-
scribed in this section or refer the problem to an
automotive electrician.
TO CHECK AND RENEW FUSIBLE LINK

NOTE: If a fusible link is found to be faulty
or burnt out, use a genuine replacement
fusible link of the specified amperage only.

The use of a higher amperage fusible link
than that specified could cause damage to
the vehicle wiring harness.

A new fusible link should never be in-
stalled until the fault which caused the
original link to fail has been repaired.

The fusible links installed to protect the
vehicles wiring system are located adjacent
to the washer bottle on the right hand inner
mudguard.

Disconnect the negative battery terminal
Check the fusible link visually for service-
ability.
Should the fusible link appear to be in a
serviceable condition, test its continuity using
an
ohmmeter or a test lamp. If the fusible link proves to be faulty, install
a
new fusible link and have an assistant temporarily
connect the battery while the circuit is checked for
operation.


View of the fuse box cover showing the fuse identifi-
cation label. Installed view of the fusible links.
View of the fuse box.

216 Electrical System

NOTE: While checking the operation of the
fusible link, loosely connect the battery-
terminal only, to safeguard against damage
to the wiring harness.

(5) If the circuit is still inoperative or the fusible
link burns out again, refer the problem to an auto-
motive electrician.

RELAY LOCATIONS
The various relays employed in the vehicle elec-
trical system are located behind the fusible links
adjacent to the washer bottle in the engine compart-
ment, on the engine compartment bulkhead, under
the windscreen wiper motor and in the fuse box at the
lower right hand side of the dashboard.

The engine compartment relays power the radia-
tor fan, horn, condenser fan, bulb check, automatic
transaxle neutral safety switch, air conditioner and
condenser motor.


Installed view of the fuse box relays.
The fuse box relays power the fuel pump, ignition,
some accessories and the el ectronic control module.

18. TRAILER WIRING
There are several brands of trailer wiring connec-
tors available with a variet y of pin configurations. The
most common is the seven pin type which provides
for two auxiliary circuits, usually used for reverse
lamps and electric trailer brakes.


Installed view of the engine compartment relays.
Installed view of the engine compartment relays.


Useful connections which can be used if the trailer to
be towed is fitted with different type plug to the towing
vehicle socket
Brylite seven pin trailer plug and socket.