1998 NISSAN PATROL engine

CEL798
GROUND DISTRIBUTION/RHD MODELS
Engine Room Harness (Cont'd)
EL-28

RD ENGINE
CEL802
GROUND DISTRIBUTION/RHD MODELS
Engine Room Harness (Cont'd)
EL-29

CAUTION:
If it becomes necessary to start the engine with a booster bat-
tery and jumper cables,
a. Use a 12-volt booster battery.
b. After connecting battery cables, ensure that they are
tightly clamped to battery terminals for good contact.
c. Never add distilled water through the hole used to check
speci®c gravity.
How to Handle Battery
METHODS OF PREVENTING OVER-DISCHARGE
The following precautions must be taken to prevent over-discharg-
ing a battery.
+The battery surface (particularly its top) should always be kept
clean and dry.
+The terminal connections should be clean and tight.
+At every routine maintenance, check the electrolyte level.
This also applies to batteries designated as ``low maintenance''
and ``maintenance-free''.
+When the vehicle is not going to be used over a long period of
time, disconnect the negative battery terminal.
+Check the charge condition of the battery.
Periodically check the speci®c gravity of the electrolyte. Keep
a close check on charge condition to prevent over-discharge.
CHECKING ELECTROLYTE LEVEL
WARNING:
Do not allow battery ¯uid to come in contact with skin, eyes,
fabrics, or painted surfaces. After touching a battery, do not
touch or rub your eyes until you have thoroughly washed your
hands. If acid contacts eyes, skin or clothing, immediately
¯ush with water for 15 minutes and seek medical attention.
MEL040F
MEL041F
MEL042F
BATTERY
EL-37

Trouble Diagnoses
If any abnormality is found, immediately disconnect battery negative terminal.
Starter does not stop.cReplace magnetic switch.
Engine does not start.
Does engine turn by cranking?
No
cYe s
Does engine turn normally?
No (Turns slowly.)
cYe s
Check ignition/fuel system.
Check battery as follows:
+Charging condition
+Terminal connections
+Terminal corrosion
NG
cOK
Repair starter motor.
jA
Does starter motor turn?
No
cYe s
Does gear shaft turn?
No
cYe s
Check pinion clutch.
Check reduction gear, armature
and gear shaft.
Check fuse and fusible link.
OK
cNG
Replace.
Check battery as follows:
+Charging condition
+Terminal connections
+Terminal corrosion
OKj
A
cNG
+Charge battery.
+Repair connections and corro-
sion of battery terminals.
Check starting system wiring.
OK
cNG
Repair.
Does magnetic switch operation
sound occur?
Ye s
cNo
Replace magnetic switch.
Check condition of pinion and ring
gear mesh.
NG
cOK
Does starter turn under no load by
connecting wires as follows?
SEL009Z
cYe s
Replace magnetic switch.
+Adjust pinion movement.
+Check pinion moving mecha-
nism.
+Check ring gear.cNo
Repair starter motor.
.
.
.
.
.
.
.
.
.
.
.
.
STARTING SYSTEM
EL-46

Trouble Diagnoses
Before conducting an alternator test, make sure that the battery is fully charged. A 30-volt voltmeter and suit-
able test probes are necessary for the test. The alternator can be checked easily by referring to the Inspec-
tion Table.
+Before starting, inspect the fusible link.
+Use fully charged battery.
WITH IC REGULATOR
Check the fol-
lowing:
+Warning
lamp bulb
+Fuse for
warning lamp
Ignition switch
``ON''Warning lamp
``OFF''Disconnect connector (S, L) and
ground L harness side.Warning lamp
``OFF''
Warning lamp
``ON''Damaged IC
regulator.
Replace.
Warning lamp
``ON''
Engine start.
Engine speed:
1,500 rpmWarning lamp
``ON''Check the following:
+Drive belt
+Fuse for S terminal
+Connector (S, L terminal) con-
nectionEngine idlingWarning lamp
``OFF''OK
Warning lamp
``ON''
Warning lamp
``OFF''OKEngine speed:
1,500 rpm
(Measure B
terminal volt-
age)More than
15.5VDamaged IC
regulator.
Replace.
No generationField circuit is
open.
Warning lamp: ``CHARGE'' warning lamp in combination meter
Note:
+If the inspection result is OK even though the charging system is malfunctioning, check the B ter-
minal connection. (Check the tightening torque.)
+When ®eld circuit is open, check condition of rotor coil, rotor slip ring and brush. If necessary,
replace faulty parts with new ones.
MALFUNCTION INDICATOR
The IC regulator warning function activates to illuminate ``CHARGE'' warning lamp, if any of the following
symptoms occur while alternator is operating:
+Excessive voltage is produced.
+No voltage is produced.
CHARGING SYSTEM
EL-53

Bulb Replacement
The headlamp is a semi-sealed beam type which uses a replace-
able halogen bulb. The bulb can be replaced from the engine com-
partment side without removing the headlamp body.
+Grasp only the plastic base when handling the bulb. Never
touch the glass envelope.
1. Disconnect the battery cable.
2. Turn the bulb retaining ring counterclockwise until it is free from
the headlamp re¯ector, and then remove it.
3. Disconnect the harness connector from the back side of the
bulb.
4. Remove the headlamp bulb carefully. Do not shake or rotate
the bulb when removing it.
5. Install in the reverse order of removal.
CAUTION:
Do not leave headlamp re¯ector without bulb for a long period
of time. Dust, moisture, smoke, etc. entering headlamp body
may affect the performance of the headlamp. Remove head-
lamp bulb from the headlamp re¯ector just before a replace-
ment bulb is installed.
Aiming Adjustment
When performing headlamp aiming adjustment, use an aiming
machine, aiming wall screen or headlamp tester. Aimers should be
in good repair, calibrated and operated in accordance with respec-
tive operation manuals.
If any aimer is not available, aiming adjustment can be done as
follows:
For details, refer to the regulations in your own country.
a. Keep all tires in¯ated to correct pressures.
b. Place vehicle and tester on one and same ¯at surface.
c. See that there is no-load in vehicle (coolant, engine oil
®lled up to correct level and full fuel tank) other than the
driver (or equivalent weight placed in driver's position).
CAUTION:
Be sure aiming switch is set to ``0'' when performing aiming
adjustment on vehicles equipped with headlamp aiming con-
trol.
SEL995K
SEL466V
HEADLAMP Ð Conventional Type Ð
EL-63

System Description
OPERATION
Headlamp system on vehicles for North Europe contains a daytime light system. The unit operates to illumi-
nate headlamps low beam, parking, tail, license lamps and illuminations automatically in the following condi-
tions.
+The engine is running with lighting switch in OFF position.
When the any of following conditions exists, the daytime light operation will be canceled.
+Ignition switch is in any position other than ON
+Engine is stopped
+Lighting switch is turned to 1st or 2nd position.
If the daytime light system is canceled, lighting switch operations are the same as for conventional light sys-
tem.
DAYTIME LIGHT IS OPERATING
(With engine running and lighting switch in OFF position)
With engine running, power is supplied
+from alternator terminal L
+through daytime light control unit terminalj
8
+to base of transistor-2 in the daytime light control unit.
The transistor-2 supplies ground path to all relays. Then the relays energize to illuminate lamps.
SEL490V
HEADLAMP Ð Daytime Light System Ð
EL-65

Trouble Diagnoses
DAYTIME LIGHT CONTROL UNIT INSPECTION TABLE
Terminal No. ConnectionsINPUT (I)/
OUTPUT (O)Operated conditionVoltage (V)
(Approximate
values)
1Power source for illumi-
nation & tail lampÐÐ12
2Power source for head-
lamp LHÐÐ12
3Power source for head-
lamp RHÐÐ12
4 Headlamp RH OON (daytime light operating*) 12
OFF 0
5 Headlamp LH OON (daytime light operating*) 12
OFF 0
6 Start signal I Ignition switchSTART 12
ON, ACC or OFF 0
7 Power source Ð Ignition switchON or START 12
ACC or OFF 0
8 Alternator ``L'' terminal I EngineRunning 12
Stopped 0
9 Ground Ð Ð Ð
10 Illumination & tail lamp OON (daytime light operating*) 12
OFF 0
11 Lighting switch I1STz2ND position 12
OFF 0
*: Daytime light operating: Lighting switch in ``OFF'' position with engine running.
Bulb Replacement
Refer to ``HEADLAMP'' (EL-63).
Aiming Adjustment
Refer to ``HEADLAMP'' (EL-63).
HEADLAMP Ð Daytime Light System Ð
EL-69