1998 NISSAN PATROL air con

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

BULB SPECIFICATIONS............................................314
Headlamp.................................................................314
Exterior Lamp ..........................................................314
Interior Lamp............................................................314
WIRING DIAGRAM CODES (CELL CODES) .............315
WIRING DIAGRAM REFERENCE CHART
ECCS, IGNITION SYSTEM ........................................................................\
................... EC SECTION
ANTI-LOCK BRAKE SYSTEM ........................................................................\
.............. BR SECTION
SRS ``AIR BAG'' ........................................................................\
.................................... RS SECT ION
HEATER AND AIR CONDITIONER ........................................................................\
...... HA SECTION
DIFFERENTIAL CARRIER ........................................................................\
.................... PD SECTION
REAR SUSPENSION ........................................................................\
............................. RA SECTION
FUEL SYSTEM ........................................................................\
....................................... FE SECT ION

Supplemental Restraint System (SRS) ``AIR
BAG'' and ``SEAT BELT PRE-TENSIONER''
The Supplemental Restraint System such as ``AIR BAG'' and ``SEAT BELT PRE-TENSIONER'' used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger in a frontal collision.
The SRS system composition which is available to NISSAN MODEL Y61 is as follows (The composition var-
ies according to the destination.):
Driver air bag module (located in the center of the steering wheel), front passenger air bag module (located
on the instrument panel on passenger side), seat belt pre-tensioner, a diagnosis sensor unit, warning lamp,
wiring harness and spiral cable.
Information necessary to service the system safely is included in theRS sectionof this Service Manual.
WARNING:
+To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag in¯ation, all maintenance must be performed
by an authorized NISSAN dealer.
+Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the RS section.
+Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. Spiral cable and wiring harnesses covered with yellow insulation either just before
the harness connectors or for the complete harness are related to the SRS.
PRECAUTIONS
EL-1

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
Symptom Possible cause Repair order
LH headlamps do not operate. 1. Bulb
2. Grounds
E25andE40
3. 15A fuse
4. Lighting switch1. Check bulb.
2. Check grounds
E25andE40.
3. Check 15A fuse (No.
51, located in fuse and fusible
link box). Verify battery positive voltage is present at
terminalj
8of lighting switch.
4. Check lighting switch.
RH headlamps do not operate. 1. Bulb
2. Grounds
E25andE40
3. 15A fuse
4. Lighting switch1. Check bulb.
2. Check grounds
E25andE40.
3. Check 15A fuse (No.
52, located in fuse and fusible
link box). Verify battery positive voltage is present at
terminalj
5of lighting switch.
4. Check lighting switch.
LH high beams do not operate, but
LH low beam operates.1. Bulbs
2. Open in LH high beams circuit
3. Lighting switch1. Check bulbs.
2. Check R/L wire between lighting switch and LH head-
lamps for an open circuit.
3. Check lighting switch.
LH low beam does not operate, but
LH high beam operates.1. Bulb
2. Open in LH low beam circuit
3. Lighting switch1. Check bulb.
2. Check R/G wire between lighting switch and LH head-
lamp for an open circuit.
3. Check lighting switch.
RH high beams do not operate, but
RH low beam operates.1. Bulbs
2. Open in RH high beams circuit
3. Lighting switch1. Check bulbs.
2. Check R/Y wire between lighting switch and RH head-
lamps for an open circuit.
3. Check lighting switch.
RH low beam does not operate, but
RH high beam operates.1. Bulb
2. Open in RH low beam circuit
3. Lighting switch1. Check bulb.
2. Check R/B wire between lighting switch and RH head-
lamp for an open circuit.
3. Check lighting switch.
High beam indicator does not work. 1. Bulb
2. Grounds
M30andM98
3. Open in high beam circuit1. Check bulb in combination meter.
2. Check grounds
M30andM98.
3. Check R/L wire between lighting switch and combina-
tion meter for an open circuit.
HEADLAMP Ð Conventional Type Ð
EL-62

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

Trouble Diagnoses
Symptom Possible cause Repair order
Turn signal and hazard warning
lamps do not operate.1. Hazard switch
2. Combination ¯asher unit
3. Open in combination ¯asher unit
circuit1. Check hazard switch.
2. Refer to combination ¯asher unit check.
3. Check wiring to combination ¯asher unit for open cir-
cuit.
Turn signal lamps do not operate
but hazard warning lamps operate.1. 7.5A fuse
2. Hazard switch
3. Turn signal switch
4. Open in turn signal switch circuit1. Check 7.5A fuse [No.
11, located in fuse block
(J/B)]. Turn ignition switch ON and verify battery
positive voltage is present at terminalj
2of hazard
switch.
2. Check hazard switch.
3. Check turn signal switch.
4. Check harness between combination ¯asher unit and
turn signal switch for open circuit.
Hazard warning lamps do not oper-
ate but turn signal lamps operate.1. 15A fuse
2. Hazard switch
3. Open in hazard switch circuit1. Check 10A fuse (No.
48, located in fuse and fusible
link box). Verify battery positive voltage is present at
terminalj
3of hazard switch.
2. Check hazard switch.
3. Check harness between combination ¯asher unit and
hazard switch for open circuit.
Front turn signal lamp LH or RH
does not operate.1. Bulb
2. Grounds
E25andE40
1. Check bulb.
2. Check grounds
E25andE40.
Rear turn signal lamp LH or RH
does not operate.1. Bulb
2. Grounds
B23andD83or
B112andD106
1. Check bulb.
2. Check grounds
B23andD83orB112andD106.
LH and RH turn indicators do not
operate.1. Ground 1. Check grounds
M30andM98.
LH or RH turn indicator does not
operate.1. Bulb 1. Check bulb in combination meter.
Electrical Components Inspection
COMBINATION FLASHER UNIT CHECK
+Before checking, ensure that bulbs meet speci®cations.
+Connect a battery and test lamp to the combination ¯asher unit,
as shown. Combination ¯asher unit is properly functioning if it
blinks when power is supplied to the circuit.
SEL122E
TURN SIGNAL AND HAZARD WARNING LAMPS
EL-85