1998 NISSAN PATROL Door

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 P/ANT Ð/LHD Models..............181
Wiring Diagram Ð P/ANT Ð/RHD Models .............182
Trouble Diagnoses...................................................183
Location of Antenna .................................................183
Antenna Rod Replacement .....................................183
Window Antenna Repair ..........................................184
ELECTRIC SUNROOF................................................186
Wiring Diagram Ð SROOF Ð ................................186
POWER DOOR MIRROR............................................188
Wiring Diagram Ð MIRROR Ð/LHD Models..........188
Wiring Diagram Ð MIRROR Ð/RHD Models .........189
POWER SEAT.............................................................190
Wiring Diagram Ð SEAT Ð/LHD Models ...............190
Wiring Diagram Ð SEAT Ð/RHD Models...............192
HEATED SEAT............................................................194
Wiring Diagram Ð HSEAT Ð..................................194
POWER WINDOW.......................................................196
System Description ..................................................196
Schematic ................................................................197
Wiring Diagram Ð WINDOW Ð .............................198
Trouble Diagnoses...................................................203
POWER DOOR LOCK.................................................204
System Description ..................................................204
Wiring Diagram Ð D/LOCK Ð ................................205
Trouble Diagnosis ....................................................207
POWER DOOR LOCK Ð Super Lock Ð.................. 211
Component Parts and Harness Connector
Location ................................................................... 211
System Description ..................................................212
Schematic ................................................................214
Wiring Diagram Ð S/LOCK Ð/LHD Models ...........215
Wiring Diagram Ð S/LOCK Ð/RHD Models ..........219
Trouble Diagnoses...................................................223
MULTI-REMOTE CONTROL SYSTEM.......................234
System Description ..................................................234
Wiring Diagram Ð MULTI Ð/LHD Models..............235
Trouble Diagnoses...................................................237
ID Code Entry Procedure ........................................239
NATS (Nissan Anti-Theft System)/LHD MODELS....240System Description ..................................................240
System Composition ................................................240
Wiring Diagram Ð NATS Ð ....................................241
CONSULT ................................................................242
Trouble Diagnoses...................................................244
How to Replace NATS IMMU ..................................253
NATS (Nissan Anti-Theft System)/RHD MODELS...254
Component Parts and Harness Connector
Location ...................................................................254
System Description ..................................................255
System Composition ................................................255
Wiring Diagram Ð NATS Ð ....................................256
CONSULT ................................................................257
Trouble Diagnoses...................................................259
LOCATION OF ELECTRICAL UNITS.........................269
Engine Compartment ...............................................269
Passenger Compartment Ð LHD Models ...............270
Passenger Compartment Ð RHD Models ..............272
HARNESS LAYOUT....................................................275
How to Read Harness Layout .................................275
Outline/LHD Models.................................................276
Outline/RHD Models ................................................277
Main Harness/LHD Models......................................278
Main Harness/RHD Models .....................................282
Engine Room Harness/LHD Models .......................286
Engine Room Harness/RHD Models .......................290
Engine Harness .......................................................294
Engine Control Harness and Alternator Harness ....295
Body Harness/LHD Models .....................................296
Body Harness/RHD Models.....................................300
Body No. 2 Harness/LHD Models ...........................304
Body No. 2 Harness/RHD Models...........................306
Chassis Harness......................................................308
Room Lamp Harness...............................................309
Front Door Harness (Driver side) ............................310
Front Door Harness (Passenger side) .................... 311
Rear Door Harness..................................................312
Back Door Harness and Rear Window Defogger
Harness....................................................................313

Back Door and Rear Window Defogger Harness
CEL731
GROUND DISTRIBUTION/LHD MODELS
EL-24

Back Door and Rear Window Defogger Harness
CEL791
GROUND DISTRIBUTION/RHD MODELS
EL-35

System Description
Front interior room lamp timer is controlled by smart entrance control unit while interior room lamp switch is
in the ``DOOR'' position.
Smart entrance control unit does not control rear interior room lamp.
TIMER OPERATION
Interior room lamp timer keeps interior room lamp illuminated for about 15 seconds when:
+driver's door is unlocked while key is out of ignition key cylinder,
+key is withdrawn from ignition key cylinder while driver's door is closed, and
+driver's door is opened and then closed while ignition switch is not in the ``ON'' position.
The timer is cancelled, and interior room lamp turns off when:
+driver's door is locked, or
+ignition switch is turned ``ON''.
ON-OFF CONTROL
When the front driver side door, front passenger side door, rear LH door, rear RH door or back door is opened,
interior room lamp turns on.
When driver side door is opened and then closed while ignition switch is not in the ON position, interior room
lamp timer operates. (Timer does not operate when doors other than the driver side door is opened and
closed.)
INTERIOR ROOM LAMP Ð With Timer Ð
EL-93

Trouble Diagnoses
DIAGNOSTIC PROCEDURE
SYMPTOM: Front interior room lamp does not turn on when
any door is opened, or timer does not operate
properly.
Does room lamp turn on when room lamp
switch is in ``ON'' position?
Ye s
cNo
Check the following.
+Bulb
+10A fuse [No.
20,
located in the fuse block
(J/B)]
+Harness for open or
short between fuse and
room lamp
+Room lamp ground con-
dition
Does key warning chime operate prop-
erly?
Ye s
cNo
Check ``WARNING
CHIME'' system.
(Refer to EL-135.)
Does power door lock operate using driver
side knob lock switch?
Ye s
cNo
Check ``POWER DOOR
LOCK'' system.
(Refer to EL-204.)
CHECK ROOM LAMP OUTPUT SIGNAL.
1. Turn room lamp switch to ``DOOR''
position.
2. Disconnect control unit connector.
3. Check voltage between control unit ter-
minalj
17and ground.
Battery voltage should exist.
OK
cNG
Check harness for open or
short between room lamp
and control unit.
CHECK DOOR SWITCH INPUT SIGNAL.
1. Connect control unit connector.
2. Check voltage between control unit ter-
minalj
10and ground.
OK
cNG
Check the following.
+Door switch
+Door switch ground con-
dition
+Harness for open or
short between control
unit and door switch
Replace control unit.
Condition Voltage [V]
At least one door is
opened.0
All doors are closed. Approx. 12
SEL152VA
SEL153VA
.
.
.
.
.
INTERIOR ROOM LAMP Ð With Timer Ð
EL-100

System Description
The warning chime is combined with the smart entrance control unit.
Both the ignition key and light warning chime will not sound, when ignition switch in the ON or START posi-
tion. (When power supply exists at smart entrance control unit terminalj
12.)
IGNITION KEY WARNING CHIME
With the key in the ignition key cylinder, the ignition switch in the OFF or ACC position, and the driver's door
open, the warning chime will sound. A battery positive voltage is supplied
+from key switch terminalj
1
+to smart entrance control unit terminalj1.
Ground is supplied
+through driver side door switch
+to smart entrance control unit terminalj
7.
LIGHT WARNING CHIME
With ignition switch in the OFF or ACC position, driver's door open, and lighting switch in 1ST or 2ND position,
warning chime will sound. A battery positive voltage is supplied
+from lighting switch terminalj
12or daytime light control unit
+to smart entrance control unit terminalj
14.
Ground is supplied
+through driver side door switch
+to smart entrance control unit terminalj
7.
WARNING CHIME
EL-135

DIAGNOSTIC PROCEDURE 2
(Key switch input signal check)
CHECK KEY SWITCH INPUT SIGNAL.
Check voltage between control unit termi-
nalj
1and ground.
OK
cNG
Check the following.
+Key switch
Refer to ``Electrical Com-
ponents Inspection'' (EL-
140).
+7.5A fuse [No.
24,
located in fuse block
(J/B)]
+Harness for open or
short between key
switch and fuse
+Harness for open or
short between control
unit and key switch
Go to DIAGNOSTIC PROCEDURE 3.
Condition of key switch Voltage [V]
Key is inserted. Approx. 12
Key is withdrawn. 0
DIAGNOSTIC PROCEDURE 3
CHECK POWER SUPPLY CIRCUIT FOR
CONTROL UNIT.
Check voltage between control unit termi-
nalsj
11,j12and ground.
OK
cNG
Check the following.
+
M92circuit breaker
+7.5A fuse [No.8,
located in the fuse block
(J/B)]
+Harness for open or
short
CHECK GROUND CIRCUIT FOR CON-
TROL UNIT.
Check continuity between control unit ter-
minalj
18and ground.
Continuity should exist.
OK
cNG
Repair harness or connec-
tors.
CHECK DOOR SWITCH INPUT SIGNAL.
Check voltage between control unit termi-
nalj
7and ground.
OK
cNG
Check the following.
+Driver side door switch
Refer to ``Electrical Com-
ponents Inspection'' (EL-
140).
+Door switch ground cir-
cuit
+Harness for open or
short between control
unit and door switch
Replace control unit.
Terminals Ignition switch position
Å@OFF ACC ON
j
11Ground Approx. 12V
j
12Ground 0V 0V Approx. 12V
Condition of driver's door Voltage [V]
Driver side door is closed. Approx. 12
Driver side door is open. 0
SEL852UB
SEL853UB
SEL854UB
SEL855UB
.
.
.
.
WARNING CHIME
Trouble Diagnoses (Cont'd)
EL-139