1987 NISSAN PULSAR charging

FRONT SUSPENSION............................ 156
Specifications......................................................... 156
Front suspension tr ouble shooting ........................ 156
Description ............................................................ 157
Steering knuckle.................................................... 157
Suspension unit..................................................... 159
Control arm ........................................................... 161
Stabiliser bar ........................................................ 162
Suspension and steering angles .......................... 163
REAR SUSPENSION................................ 164
Specifications ........................................................ 164
Rear suspension tr ouble shooting ........................ 164
Description ............................................................ 165
Rear hub ............................................................... 166
Suspension unit .................................................... 167
Control arm ........................................................... 169
Knuckle assembly.................................................. 170
Stabiliser bar ........................................................ 170
Rear wheel alignment ........................................... 171
BRAKES...................................................... 172
Specifications......................................................... 172
Brakes trouble shooting ........................................ 172
Description ............................................................ 174
Master cyli nder...................................................... 175
Brake servo unit .................................................... 177
Front brakes ......................................................... 178
Rear disc brakes................................................... 181
Rear drum brakes ................................................. 184
Handbrake cable and le ver assembly ................... 186
Brake adjustments ................................................ 187
Brake pedal ........................................................... 187
Hydraulic system................................................... 188
ELECTRICAL SYSTEM............................ 190
Specifications......................................................... 190
Battery and charging system trouble shooting ....... 190
Battery and starting system trouble shooting ........ 191
Lighting system trouble shooting ........................... 192
Turn signal lamp trouble shooting ........................ 192
Test equipment and so me applications................. 193
Battery ................................................................... 194
Alternator ............................................................... 196
Starter motor ......................................................... 201
Ignition system ...................................................... 206
Steering wheel ....................................................... 206
Switches and controls........................................... 206
Instrument cluster.................................................. 209
Blower fan .............................................................. 209
Radio/cassette...................................................... 209
lamp units ............................................................ 210
Windscreen wiper ................................................. 213
Fuses, fusible links and relays ............................. 215
Trailer wiring ......................................................... 216
Wiring diagrams ................................................... 218
BODY........................................................... 225
Windscreen and re ar glass .................................. 225
Front doors ........................................................... 225
Rear doors............................................................ 228
Engine bonnet...................................................... 231
Tailgate and lock — hatchback ............................ 231
Luggage compartment lid and lock — sedan ........ 233
Radiator grille.............................................................. 234
Centre console...................................................... 234 Dashboard ............................................................ 235
Scat belts ............................................................. 236
Seats .................................................................... 236
Vehicle cleaning ........................................................... 237
CONVERSION TABLES.......................... 238

Cooling and Heating Systems 81
continuous stream of bubbles indicates that the refriger-
ant charge is low.

A large number of bubbles or foam indicates that
the refrigerant charge is very low.

No bubbles or the presen ce of oil streaks in the
sight glass indicate that the system is completely
empty.

NOTE: If the outside air temperature is
high, a certain number of bubbles may be
observed in the sight gl ass, even though the
system is fully charged.

If the system requires recharging, the vehicle
should be taken to an authorized dealer for evacu-
ation, leak testing and recharging.

Do not operate the system if it is known that the
refrigerant charge is low as damage may result.

MAINTENANCE
The air conditioning system requires l i t t l e main-
tenance other than the following. Where applicable,
refer to the Lubrication an d Maintenance section for
the recommended service intervals.

(1) Check the refrigerant charge level in the
receiver/dryer sight glass. Recharge the system as
necessary. It is considered normal for the system to
require periodic recharging. (2) Inspect the air conditioner pipes and hoses
for leaks, deterioration and alignment. Evidence of oil
leakage is an indication of refrigerant leakage. Repair
or renew as necessary.
(3) Inspect the evaporator drain tube and the
condenser cooling fins for blockage. Clean as neces-
sary.
(4) Check the drive belt for deterioration and for
correct tension. Refer to the Engine Tune-up section
for the correct procedure.
(5) Operate the system at least once a week for
approximately 15 minutes to keep the compressor
seals lubricated.

86 Fuel and Engine Management
other. The fuel pressure is maintained at a constant
pressure relevant to the manifold vacuum. A dispos-
able paper element fuel filter is mounted on the engine
bulkhead.

The amount of fuel injected is relevant to the time
the injector remains open. The basic time the injector
remains open is governed by the control unit which
uses information from the various sensors to give
optimum engine efficiency for given conditions.

The idle air control (IAC) valve controls the fast
idle speed during engine warm up and maintains the
basic idle speed at a set value by compensating for
loads such as air conditioning or the selection of Drive
on automatic transaxle models.

The throttle body assembly is mounted to the
inlet manifold and controls the amount of air entering
the engine by the action of the throttle valve.

Efficient operation of the EFI system depends on
accurate signals being receiv ed by the control unit and
controlled air flow beyond the throttle valve. There-
fore it is essential that all air, fuel and electrical
connections be clean and tight.

3. SERVICE PRECAUTIONS AND
PROCEDURES

Electronic ignition systems can produce danger-
ously high voltages in both the primary and secondary
circuits. For this reason, extreme care must be taken
when working on or near the ignition system.

Do not start the engine if the battery terminals are
not clean and tight.

Do not use the fast charge or boost settings on a
battery charger to start the engine.

Do not disconnect the battery terminals while the
engine is running.

Disconnect the battery terminals before charging
the battery.

Disconnect the negative ba ttery terminal before
working on the engine management system.

Do not subject the control unit to temperatures
above 80 deg C.

Ensure that all wiring connectors are clean and
tight.

Disconnect the battery terminals and the control
unit wiring connectors before attempting any welding
operations.

Do not direct a steam cleaning or pressure
washing nozzle at engine management components
when cleaning the engine.

Ensure that the ignition is Off prior to disconnect-
ing the battery terminals, fusible links or the control
unit wiring connectors.

TO CONNECT ELECTRICAL TEST
EQUIPMENT

NOTE: Some types of tachometers, timing
lights and ignition system analysers are not
compatible with this engine management
system and may result in incorrect readings.
It is therefore recommended that the man-
ufacturer of the lest equipment be consulted
before proceeding to use the equipment.

If a test procedure requires the use of a
test lamp or voltmeter, ensure that only the
specified instrument is used to prevent mis-
leading diagnosis.

MULTIMETER
It is essential that in all tests where voltage or
resistance is to be measur ed, a digital display multi-
meter with a minimum 10 megohms impedance be
used.


The correct method of backprobing the wiring connec-
tors. The meter test probe should be modified with a piece of thin wire as shown.
All meter readings are to be performed with the
component wiring connectors installed unless other-
wise instructed. This can be done by inserting the
meter test probes from the wiring harness side of the
connector or backprobing. If the test probes are not
thin, they should be modified by attaching a thin piece
of wire to the end, giving a fine point that will not
damage the connector. Ensure that the wire is making
good contact with the probe.

If sealing plugs or boots are removed from wiring
connectors to facilitate bac kprobing, ensure that they
are correctly installed at the conclusion of the test
procedure.

To identify wiring connector terminals refer to the
wiring circuit diagrams.

Test Lamp
To avoid damage to the electronic components
when testing, the use of an LED (light emitting diode)
test lamp is recommended.

190
ELECTRICAL SYSTEM
CAUTION: To prevent severe electrical shock extreme care must be taken when
working on or near the electronic ignition system as dangerous high tension voltages
are produced in both the primary and secondary circuits. See the text fo\
r
precautionary notes.

SPECIFICATIONS
BATTERY
Type ..................................................12 volt lead acid
Polarity to earth .................................... Negative ( - )
Specific gravity:
Fully charged ................................... A bove 1.250
Fully discharged ................................Below 1.130
ALTERNATOR
Make .................................................Bosch or Hitachi
Maximum output .......................................... 70 amps
Polarity to earth .................................... Negative ( - )
Stator windings ......................................... Star wound
Regulator type ................................................ Integral
Brush length minimum:
Bosch ........................................................ 5.0 mm
Hitachi ............................. 6.0 mm or limit mark
STARTER MOTOR
Make .................................................Hitach i or Bosch
Type ............................ 4 pole 4 brush reduction gear
Operation control.................................. Solenoid and
overrunning clutch
Undercut of commutator (maximum):
Hitachi ...................................................... 0.8 mm
Brush length (minimum):
Bosch ........................................................ 8.0 mm
Hitachi ........................................................11 mm
Brush spring tension;
Hitachi ............................................... 15.7-19.6 N
Hitachi:
Drive pinion stopper clearance ........ 0.3-1.5 mm
Selective fit adjuster plates ........ 0.5 and 0.8 mm
IGNITION SYSTEM
The ignition system is an integral part of the
engine management system. The Specifications, testing
and overhaul procedures are fully covered in the Fuel
and Engine Management section.

TORQUE WRENCH SETTINGS
Alternator pulley retaining nut:
Bosch ......................................................... 50 Nm
Hitachi ....................................................... 59 Nm
1. BATTERY AND CHARGING SYSTEM
TROUBLE SHOOTING

BATTERY UNDERCHARGED
3. Loose or broken drive belt: Adjust or renew
the drive belt. 4. Faulty alternator regulator; Renew the regu-
lator unit.
5. Faulty battery: Install a new battery of
the
recommended type and capacity. 6. Faulty alternator: Overhaul or renew the
alternator. 7. Fault in the charging circuit wiring: Check
and repair or renew the wiring harness. 8. Faulty connections in the charging circuit:
Check and repair the connections. 9. Fusible link blown; Rectify the fault and
renew as necessary.
NOTE: Check the state of charge (specific
gravity) of the battery- as described under
the
Battery heading in this section. If the battery
is undercharged, check the possible causes in
the order given.

BATTERY OVERCHARGED
• Faulty alternator regulator unit:
Renew the
regulator unit.
• Faulty alternator: Overhaul or
renew the
alternator. • Faulty charging circuit wiring or
connec-
tions: Check and renew or repair the faulty
compo-
nents.
NOTE: An overcharged battery is indicated
by continual loss of water through boiling.

Electrical System 191
This is usually accompanied by discoloura-
tion of the electrolyte.

CHARGE INDICATOR LAMP REMAINS ON
• Loose or broken alternator drive belt: Adjust
or renew the drive belt.
• Faulty regulator unit: Check and renew the
regulator unit. • Faulty alternator: Check and overhaul the
alternator. • Short to earth in the warning lamp circuit:
Check and repair the circuit.

Checking the alternator drive belt for deterioration.
CHARGE INDICATOR LAMP DOES NOT
OPERATE

• Lamp bulb blown: Check and renew the
faulty bulb. • Open circuit in the wi ring or bulb socket:
Check and rectify the open circuit. • Faulty alternator diode: Overhaul the alter-
nator.
NOISE IN DRIVE BELT OR ALTERNATOR

(1) Drive belt frayed or out of alignment with
the pulleys: Renew the drive bell or align the pulleys.

• Loose alternator moun ting bolts or worn
bearings: Tighten the mounting bolts or renew the
bearings. • Loose alternator pulley: Tighten the pulley
retaining nut.
• Faulty alternator: Overhaul or renew the
alternator. • Faulty diodes in the alternator: Overhaul the
alternator, install a new heat sink.
NOTE: To check if the noise is in the
alternator or drive belt, loosen the alternator
and remove the drive belt. If the noise is
gone when the engine is run for a short time
check the serviceability of the belt and
alternator components.

2. BATTERY AND STARTING SYSTEM TROUBLE SHOOTING

STARTER LACKS POWER TO CRANK ENGINE
(1) Battery undercharged: Check the charging
system and rectify as necessary.


Cleaning the battery terminals using a battery post
cleaner.
• Battery faulty, will not hold charge: Check
and renew the battery. • Battery leads or terminals loose or corroded:
Clean and tighten the leads or terminals.
• Faulty starter motor: Check and overhaul the
starter motor. • Faulty starter solenoid switch or contacts:
Check and renew the solenoid as necessary.
STARTER WILL NOT ATTEMPT TO CRANK
ENGINE

(1 ) Open circuit in the starting system : Check
for dirty or loose leads or terminals, dirty commuta-
tor, faulty solenoid or faulty switch. On automatic
Spin the alternator pulley over by hand to check the
bearings for noise.

Electrical System 195
(2) Remove the battery holding clamp and lift
the battery from the vehicle.

Installation is a reversal of the removal procedure
with attention to the following points:

Ensure that the terminals and posts are
clean. When connecting the l eads to the battery,
ensure that the polarity is correct. Connect the
positive lead first. Do not over tighten the terminal clamp
nuts.
Apply petroleum jelly to the battery termi-
nals to prevent corrosion.
MAINTENANCE

Battery maintenance should be performed at the
scheduled services.

NOTE: Keep naked flames away from the
battery as the battery gases are highly
explosive.

(1) Keep the battery and the surrounding area
clean and dry. In particular, ensure that the top of the
battery is free from dirt and moisture to prevent a
voltage drop between the terminals.

If necessary, clean the battery case as follows:
Remove the battery from the vehicle as
previously described.
Pour hot water over the battery being careful
not to allow any water to enter the battery through the
filler cap vent holes. Wipe the battery case clean.
Clean the battery terminals and posts using a
battery post cleaner, wire brush or emery cloth.
Remove all dirt and corrosion.
Remove the filler caps and check that the
vent holes are clear. Check the electrolyte le vel and replenish with distilled water as necessary. The correct level is just
above the top of the plates. Do not overfill the battery.
Do not transfer electrolyte from one cell to another.

(5) If the battery electrolyte requires frequent
replenishing, check the batt ery case for cracks. If the
case is damaged, renew the battery.

Check for overcharging by measuring the output
of the alternator as described later in this section.

Apply petroleum jelly to the battery termi-
nals to prevent corrosion. If the electrolyte has overflowed and contam-
inated the battery carrier and surrounding body
panels, proceed as follows:
With the battery removed from the vehicle,
sprinkle bicarbonate of soda over the contaminated
areas.
Pour hot water over the bicarbonate of soda.
The bicarbonate of soda will react with the water and
begin to foam. When the bicarbonate of soda has stopped
foaming, rinse the area with clean water and allow to
dry. Remove any blistered paint from the con-
laminated areas. Paint the contaminated areas with a corro-
sion inhibiting paint.
TO TEST AND CHARGE

(1) Using a hydrometer, test the specific gravity
of the battery electrolyte. Refer to the following chart
which shows charge conditi ons for various specific
gravity readings.

1.110-1.130............................... Fully discharged
1.140-1.160..............................Nearly discharged
1.170-1.190 ........................... Approximately one
quarter charged
1.200-1.220..................................... Half charged
1.230-1.250......................... Approximately three
quarters charged
1.250-1.280..................................... Fully charged

These readings are for electrolyte at a temperature
of 20 deg C. For every 10 deg above 20 deg C, add
0.007. For every 10 deg below 20 deg C, subtract
0.007.

NOTE: An accurate specific gravity reading
cannot be obtained if distilled water has
recently been added to the electrolyte. If the
electrolyte level is below the battery plates,
replenish with distilled water and charge the
battery before testing the specific gravity.

(2) If a low state of charge is indicated, or if the
specific gravity readings vary more than 0.030 be-
tween cells, the battery s hould be 'charged, using a
battery charger, with attention to the following points:

(a) Disconnect the negati ve and positive battery
terminals.
Cleaning the battery terminals using a battery post
cleaner.

196 Electrical System



Check the specific gravity in each cell with a hydro-
meter.
Check the battery electrolyte level and re-
plenish as necessary. Remove the filler cap s from the battery.
Follow the battery charger manufacturers
instructions. (3) Should the battery fail to operate satisfacto-
rily after charging, it is recommended that it be taken
to a workshop with the necessary equipment to per-
form a load test. Load testing, when performed in
conjunction with the specific gravity tests described
above will give an accurate indication of the service-
ability of the battery.
7. ALTERNATOR
Special Equipment Required
To Test On Vehicle - Voltmeter, 100-0-100
amp ammeter, ohmmeter
To Dismantle — 200 watt soldering iron,
bearing
puller, press
To Assemble — 200 watt soldering iron
DESCRIPTION
Two types of alternator are installed to the range
of vehicles covered by this manual, either Hitachi or
Bosch. In the alternator, the field and pole shoe assembly
is the moving part and it is shaped to form the rotor.
Since only a low amperage current flows between the
slip rings on the rotor shaft and the brushes, wear on
the brushes and slip rings is very slight and mainte-
nance is reduced to a minimum. The output current is generated in the fixed stator
windings and is a three phase alternating current
(AC). The stator windings are wound on a laminated
soft iron former, star connected and installed between
the end brackets. As it is not possible to charge a storage battery
with alternating current, it is necessary to rectify the
output of the stator windings to direct current (DC). This is done by a bank of diodes mounted within the
alternator slip ring end bracket.
The output of the alternator is governed by the
regulator and the built in ch aracteristics of the alter-
nator.
The regulator and brush holder assembly on
Hitachi alternators is mounted within the alternator
on the slip ring end bracket side. On Bosch
alternators
the regulator and brush holder unit is mounted to the
outside of the slip ring end bracket. An electrical cut out unit is not necessary with the
alternator charging system as the diodes prevent a
reverse current flow through the alternator.
SERVICE PRECAUTIONS
Ensure that the battery is connected with the
correct polarity to earth. Refer to Specifications.
Do not short out or ground any terminals
common to the charging circuit. Always disconnect the battery before con-
necting a battery charger.
If a booster battery is used, always connect it
in a parallel circuit i.e. positive to positive ( + to + )
and negative to negative (- to -) to maintain a 12
volt supply. Never disconnect the battery or terminals in
the charging circuit while the engine is running. Regularly check that the alternator drive belt
tension is as specified. Refer to the Engine Tune-up
section.
Keep the battery terminals clean and all
electrical connections tight. Disconnect the battery and alternator when
electric welding on the vehicle.
TO TEST ON VEHICLE If the charge indicator lamp stays on after the
engine has been started and run at approximately
1 000 rpm, carry out the following tests. Stop the engine.
Check the condition and adjustment of the
alternator drive belt. Clean the battery terminals, tighten all elec-
trical connections, check the wiring for shorts to earth
and/or bridged circuits. Ensure that the battery is fully
charged. If the battery is discharged charge it or
replace it with one fully charged. Start the engine and allow it to run until
normal operating temperature is reached.
Stop the engine and disconnect the negative
battery terminal.
Remove the nut and washer from the alter-
nator output terminal (B +) and disconnect the alter-
nator output lead. Connect one lead of an ammeter to the
alternator output terminal and the other lead to the
lead removed from the output terminal. Connect the negative battery terminal and
connect a voltmeter across the battery terminals.

Electrical System 219


Wiring diagram (WDI) for the starting, charging and engine management systems.
COLOUR CODE
The first letter of the code
represents the main wire color,
the other letters represent the
trace colors.

B - BLACK
L - BLUE
G - GREEN
R - RED
Y - YELLOW
W - WHITE
N - BROWN
O - ORANGE
K - PINK
S - GREY V - VIOLET
P - PURPLE X - LIGHT GREEN
Z - LIGHT BLUE
M - DARK GREEN
T - DARK BLUE
A - LIGHT BROWN
E - SLATE
D - TAN

KEY 1. Battery
2. Fusible links
3. To BATT WD4
4. Alternator
5. Starter motor
6. To No 27 WD2
7. Ignition switch
8. To No.10 WD4
9. To ECU BIO
10. Inhibitor relav
11. Neutral safety
switch
12. Fuse No.8 Ignition
13. Ignition coil
14. Distributor
15. To ECU A1
16. Fuel pump relay
17. Fuel pump
18. ALDL connector - Terminal G
19. Oil pressure switch
20. To No. 19 WD2
21. To No. 4 WD2
22. Reverse lamp switch
23. Fuse No. 9 Ignition
24. L H reverse lamp
25. R H reverse lamp
26. EGI relay
27. ECU C16 and B1
28. ECU A6
29. To ECU D16
30. To ECU D15
31. Injectors
32. Ignition relay
33. To No. 1 WD2
34. To tachometer
35. Condensor
36. Bypass circuit (manual transaxle)