1998 NISSAN PATROL Check

ELECTRICAL SYSTEM
SECTION
EL
When you read wiring diagrams:
+Read GI section, ``HOW TO READ WIRING DIAGRAMS''.
When you perform trouble diagnoses, read GI section, ``HOW TO FOLLOW FLOW
CHART IN TROUBLE DIAGNOSES'' and ``HOW TO PERFORM EFFICIENT DIAGNOSIS
FOR AN ELECTRICAL INCIDENT''.
+Check for any service bulletins before servicing the vehicle.
CONTENTS
PRECAUTIONS...............................................................1
Supplemental Restraint System (SRS) ``AIR
BAG'' and ``SEAT BELT PRE-TENSIONER''...............1
HARNESS CONNECTOR................................................2
Description ...................................................................2
STANDARDIZED RELAY................................................3
Description ...................................................................3
POWER SUPPLY ROUTING...........................................5
Schematic ....................................................................5
Wiring Diagram Ð POWER Ð....................................6
Fuse ...........................................................................14
Fusible Link................................................................14
Circuit Breaker Inspection .........................................14
GROUND DISTRIBUTION/LHD MODELS....................15
Engine Room Harness ..............................................15
Main Harness.............................................................19
Body Harness ............................................................22
Body No. 2 Harness ..................................................23
Back Door and Rear Window Defogger Harness .....24
Room Lamp Harness.................................................25
GROUND DISTRIBUTION/RHD MODELS...................26
Engine Room Harness ..............................................26
Main Harness.............................................................30
Body Harness ............................................................33
Body No. 2 Harness ..................................................34
Back Door and Rear Window Defogger Harness .....35
Room Lamp Harness.................................................36
BATTERY.......................................................................37
How to Handle Battery ..............................................37
Battery Test and Charging Chart ...............................40
Service Data and Speci®cations (SDS).....................44
STARTING SYSTEM.....................................................45
Wiring Diagram Ð START Ð ....................................45Trouble Diagnoses.....................................................46
Construction ...............................................................47
Removal and Installation ...........................................47
Inspection...................................................................47
Assembly ...................................................................50
Service Data and Speci®cations (SDS).....................51
CHARGING SYSTEM....................................................52
Wiring Diagram Ð CHARGE Ð ................................52
Trouble Diagnoses.....................................................53
Construction ...............................................................54
Removal and Installation ...........................................54
Disassembly...............................................................54
Inspection...................................................................55
Assembly ...................................................................56
Service Data and Speci®cations (SDS).....................56
COMBINATION SWITCH...............................................57
Check .........................................................................57
Replacement ..............................................................58
STEERING SWITCH......................................................59
Check .........................................................................59
HEADLAMP Ð Conventional Type Ð........................61
Wiring Diagram Ð H/LAMP Ð ..................................61
Trouble Diagnoses.....................................................62
Bulb Replacement .....................................................63
Aiming Adjustment .....................................................63
HEADLAMP Ð Daytime Light System Ð..................65
System Description ....................................................65
Wiring Diagram Ð DTRL Ð ......................................67
Trouble Diagnoses.....................................................69
Bulb Replacement .....................................................69
Aiming Adjustment .....................................................69
HEADLAMP Ð Headlamp Aiming Control Ð............70
System Description ....................................................70
EL

Wiring Diagram Ð H/AIM Ð .....................................71
PARKING, LICENSE AND TAIL LAMPS......................73
Wiring Diagram Ð TAIL/L Ð/Type A .........................73
Wiring Diagram Ð TAIL/L Ð/Type B.........................75
STOP LAMP..................................................................77
Wiring Diagram Ð STOP/L Ð/Type A ......................77
BACK-UP LAMP............................................................78
Wiring Diagram Ð BACK/L Ð/LHD Models..............78
Wiring Diagram Ð BACK/L Ð/RHD Models .............79
REAR FOG LAMP.........................................................80
Wiring Diagram Ð R/FOG Ð ....................................80
TURN SIGNAL AND HAZARD WARNING LAMPS.....81
Wiring Diagram Ð TURN Ð/Type A .........................81
Wiring Diagram Ð TURN Ð/Type B .........................83
Trouble Diagnoses.....................................................85
Electrical Components Inspection .............................85
ILLUMINATION..............................................................86
Schematic ..................................................................86
Wiring Diagram Ð ILL Ð ..........................................87
INTERIOR ROOM LAMP Ð With Timer Ð.................93
System Description ....................................................93
Schematic ..................................................................94
Wiring Diagram Ð ROOM/L Ð/LHD Models ............95
Wiring Diagram Ð ROOM/L Ð/RHD Models............98
Trouble Diagnoses...................................................100
MAP AND VANITY MIRROR LAMPS.........................101
Wiring Diagram Ð INT/L Ð.....................................101
METER AND GAUGES...............................................102
System Description ..................................................102
Combination Meter ..................................................103
Wiring Diagram Ð METER Ð/LHD Models............104
Wiring Diagram Ð METER Ð/RHD Models ...........106
Meter/Gauge Operation and Odo/Trip Meter
Segment Check in Diagnosis Mode ........................108
Flexible Print Circuit (FPC) ......................................109
Trouble Diagnoses................................................... 110
Electrical Components Inspection ........................... 114
COMPASS AND THERMOMETER............................. 116
System Description .................................................. 116
Wiring Diagram Ð COMPAS Ð .............................. 117
Trouble Diagnoses................................................... 118
Calibration Procedure For Compass ....................... 119
WARNING LAMPS......................................................121
Schematic ................................................................121
Wiring Diagram Ð WARN Ð ..................................123
Electrical Components Inspection ...........................134
WARNING CHIME.......................................................135
System Description ..................................................135
Wiring Diagram Ð CHIME Ð/LHD Models.............136
Wiring Diagram Ð CHIME Ð/RHD Models ............137
Trouble Diagnoses...................................................138
Electrical Components Inspection ...........................140FRONT WIPER AND WASHER..................................141
System Description ..................................................141
Wiring Diagram Ð WIPER Ð/With Intermittent
Wiper........................................................................142
Removal and Installation .........................................143
Washer Nozzle Adjustment .....................................144
Washer Tube Layout ...............................................144
REAR WIPER AND WASHER....................................145
System Description ..................................................145
Wiring Diagram Ð WIP/R Ð/LHD Models ..............146
Wiring Diagram Ð WIP/R Ð/RHD Models .............148
Trouble Diagnoses...................................................150
Removal and Installation .........................................151
Washer Nozzle Adjustment .....................................151
Washer Tube Layout ...............................................152
Check Valve .............................................................152
HEADLAMP WIPER AND WASHER..........................153
Wiring Diagram Ð HLC Ð ......................................153
Electrical Components Inspection ...........................154
Removal and Installation .........................................154
Washer Tube Layout ...............................................154
Check Valve .............................................................154
HORN...........................................................................155
Wiring Diagram Ð HORN Ð...................................155
CIGARETTE LIGHTER................................................156
Wiring Diagram Ð CIGAR Ð ..................................156
CLOCK.........................................................................157
Wiring Diagram Ð CLOCK Ð .................................157
REAR WINDOW DEFOGGER.....................................158
System Description ..................................................158
Wiring Diagram Ð DEF Ð/LHD Models .................159
Wiring Diagram Ð DEF Ð/RHD Models ................161
Trouble Diagnoses...................................................163
Electrical Components Inspection ...........................164
Filament Check ........................................................164
Filament Repair .......................................................165
WIPER DEICER...........................................................166
System Description ..................................................166
Wiring Diagram Ð DEICER Ð................................167
AUDIO..........................................................................168
Wiring Diagram Ð AUDIO Ð/LHD Models .............168
Wiring Diagram Ð AUDIO Ð/RHD Models ............170
Trouble Diagnoses...................................................172
CATS (Code) System/RHD .....................................173
NATS Audio Link/LHD .............................................174
AUDIO Ð CD AUTO CHANGER Ð...........................176
Wiring Diagram Ð CD/CHG Ð/LHD Wagon ..........176
Wiring Diagram Ð CD/CHG Ð/LHD Hardtop .........177
Wiring Diagram Ð CD/CHG Ð/RHD Wagon ..........178
Wiring Diagram Ð CD/CHG Ð/RHD Hardtop ........179
Trouble Diagnoses...................................................180
AUDIO ANTENNA.......................................................181

Fuse
a. If fuse is blown, be sure to eliminate cause of problem
before installing new fuse.
b. Use fuse of speci®ed rating. Never use fuse of more than
speci®ed rating.
c. Do not partially install fuse; always insert it into fuse
holder properly.
d. Remove fuse for ``ELECTRICAL PARTS (BAT)'' if vehicle is
not used for a long period of time.
Fusible Link
A melted fusible link can be detected either by visual inspection or
by feeling with ®nger tip. If its condition is questionable, use circuit
tester or test lamp.
CAUTION:
+If fusible link should melt, it is possible that critical circuit
(power supply or large current carrying circuit) is shorted.
In such a case, carefully check and eliminate cause of
problem.
+Never wrap outside of fusible link with vinyl tape. Impor-
tant: Never let fusible link touch any other wiring harness,
vinyl or rubber parts.
Circuit Breaker Inspection
For example, when current is 30A, the circuit is broken within 8 to
20 seconds.
CEL083
MEL944F
SBF284E
POWER SUPPLY ROUTING
EL-14

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

+Remove the cell plug using a suitable tool.
+Add distilled water up to the MAX level.
SULPHATION
A battery will be completely discharged if it is left unattended
for a long time and the speci®c gravity will become less than
1.100. This may result in sulphation on the cell plates.
To determine if a battery has been ``sulphated'', note its volt-
age and current when charging it. As shown in the ®gure, less
current and higher voltage are observed in the initial stage of
charging sulphated batteries.
A sulphated battery may sometimes be brought back into ser-
vice by means of a long, slow charge, 12 hours or more, fol-
lowed by a battery capacity test.
SPECIFIC GRAVITY CHECK
1. Read hydrometer and thermometer indications at eye level.
MEL043F
SEL709E
MEL042FA
BATTERY
How to Handle Battery (Cont'd)
EL-38

Battery Test and Charging Chart
Chart I
VISUAL INSPECTION
+Check battery case for cracks or bends.
+Check battery terminals for damage.
+If the difference between the max. and min. electrolyte level in cells is within 10 mm (0.39 in), it is OK.
OK NG
CHECKING SPECIFIC GRAVITY
Refer to ``Speci®c Gravity Check''.
Replace
battery.
Below 1.1001.100 - 1.220Above 1.220
SLOW CHARGE
Refer to ``A: Slow
Charge''.*
STANDARD CHARGE
Refer to ``B: Standard
Charge''.QUICK CHARGE
Refer to ``C: Quick Charge''.CAPACITY TEST
Refer to ``Chart II''.
OK NG
CAPACITY TEST
Refer to ``Chart II''.
OK NGCAPACITY TEST
Refer to ``Chart II''.OK NGReady for use
+Mount battery again and
check loose terminals.
Also check other related
circuits.
Ready for
useReplace
battery.Ready for use
CHECKING SPECIFIC
GRAVITY
Refer to ``Speci®c Gravity
Check''.
QUICK CHARGE
Refer to ``C: Quick Charge''.
+Time required: 45 min.
RECHARGE
Refer to ``C: Quick Charge''.
+If battery temperature rises above 60ÉC (140ÉF), stop
charging. Always charge battery when its temperature
is below 60ÉC (140ÉF).CAPACITY TEST
Refer to ``Chart II''.
OK NG
CAPACITY TEST
Refer to ``Chart II''.
OK NGReady for use Replace
battery.
Ready for
useReplace
battery.
* ``STANDARD CHARGE'' is recommended if the vehicle is in storage after charging.
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BATTERY
EL-40

Chart II
CAPACITY TEST
Test using battery checker.Test using load tester.
Follow manufacturer's instruc-
tions to check and determine
if battery is serviceable.
OK NGRead load tester voltage
when speci®ed discharging
current (Refer to Fig. 1.) ¯ows
through battery for 15 sec-
onds.
Ready for use Go to next
step.
Above 9.6
volts
OKBelow 9.6
voltsNG
Ready for use Go to next
step.
+Check battery type and determine the speci®ed current
using the following table.
Fig. 1 DISCHARGING CURRENT
(Load Tester)
Type Current (A)
28B19R(L) 90
34B19R(L) 99
46B24R(L) 135
55B24R(L) 135
50D23R(L) 150
55D23R(L) 180
65D26R(L) 195
80D26R(L) 195
75D31R(L) 210
95D31R(L) 240
115D31R(L) 240
95E41R(L) 300
130E41R(L) 330
SEL008Z
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BATTERY
Battery Test and Charging Chart (Cont'd)
EL-41

A: SLOW CHARGE
Determine initial charging current from speci®c gravity refer-
ring to Fig. 2.
+Charge battery.
+Check charging voltage 30 minutes after starting the bat-
tery charge.
12 to 15 volts
OKBelow 12 volts or above 15
voltsNG
Continue to charge for 12
hours.
Replace battery.
CHECKING SPECIFIC GRAVITY
Refer to ``Speci®c Gravity Check''.
Conduct additional charge as per Fig. 3, if necessary.
Go to ``CAPACITY TEST''.Fig. 2 INITIAL CHARGING CURRENT SETTING (Slow charge)
CON-
VERTED
SPECIFIC
GRAVITYBATTERY TYPE
28B19R(L)
34B19R(L)
46B24R(L)
55B24R(L)
50D23R(L)
55D23R(L)
65D26R(L)
80D26R(L)
75D31R(L)
95D31R(L)
115D31R(L)
95E41R(L)
130E41R(L)
Below
1.1004.0
(A)5.0
(A)7.0
(A)8.0
(A)9.0
(A)10.0
(A)14.0
(A)
+Check battery type and determine the speci®ed current using the table
shown above.
+After starting charging, adjustment of charging current is not necessary.
Fig. 3 ADDITIONAL CHARGE (Slow charge)
Below 1.150
1.150 - 1.2001.200 - 1.240Above 1.240
Charge for 5
hours at ini-
tial charging
current set-
ting.Charge for 4
hours at ini-
tial charging
current set-
ting.Charge for 2
hours at ini-
tial charging
current set-
ting.
Go to ``CAPACITY TEST''.
.
CAUTION:
+Set charging current to value speci®ed in Fig. 2. If charger
is not capable of producing speci®ed current value, set its
charging current as close to that value as possible.
+Keep battery away from open ¯ame while it is being
charged.
+When connecting charger, connect leads ®rst, then turn on
charger. Do not turn on charger ®rst, as this may cause a
spark.
+If battery temperature rises above 60ÉC (140ÉF), stop
charging. Always charge battery when its temperature is
below 60ÉC (140ÉF).
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BATTERY
Battery Test and Charging Chart (Cont'd)
EL-42