service NISSAN PATROL 1998 Y61 / 5.G Electrical System Workshop Manual

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

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

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
..
..
..
..
..
BATTERY
Battery Test and Charging Chart (Cont'd)
EL-41

C: QUICK CHARGE
Determine initial charging current setting and charg-
ing time from speci®c gravity, referring to Fig. 6.
Charge battery.
Go to ``CAPACITY TEST''.Fig. 6 INITIAL CHARGING CURRENT SETTING AND CHARGING TIME (Quick
charge)
BATTERY 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)
CURRENT [A] 10 (A) 15 (A) 20 (A) 30 (A)40
(A)
CONVERTED SPECIFIC GRAVITY
1.100 - 1.130 2.5 hours
1.130 - 1.160 2.0 hours
1.160 - 1.190 1.5 hours
1.190 - 1.220 1.0 hours
Above 1.220 0.75 hours (45 min.)
+Check battery type and determine the speci®ed current using the table shown
above.
+After starting charging, adjustment of charging current is not necessary.
CAUTION:
+Do not use quick charge method on a battery whose speci®c gravity is less than 1.100.
+Set initial charging current to value speci®ed in Fig. 6. 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.
+Be careful of a rise in battery temperature because a large current ¯ow is required during quick-
charge operation.
If battery temperature rises above 60ÉC (140ÉF), stop charging. Always charge battery when its
temperature is below 60ÉC (140ÉF).
+Do not exceed the charging time speci®ed in Fig. 6, because charging battery over the charging
time can cause deterioration of the battery.
Service Data and Speci®cations (SDS)
Applied
modelRD28
Standard Cold areas for Europe
Type 95D31L 115D31L
Capacity
V-AH12-80 12-80
.
.
BATTERY
Battery Test and Charging Chart (Cont'd)
EL-44

+Not in the speci®ed value ... Adjust by adjusting plate.
Service Data and Speci®cations (SDS)
STARTER
TypeS13-502
HITACHI make
Reduction gear type
Applied model RD28
System voltage V 12
No-load
Terminal voltage V 11
Current A Less than 125
Revolution rpm 4,000
Minimum diameter of commutator
mm (in)35.5 (1.398)
Minimum length of brush mm (in) 11 (0.43)
Brush spring tension
N (kg, lb)28.4 - 34.3
(2.9 - 3.5,
6.4 - 7.7)
Clearance between bearing metal
and armature shaft mm (in)Ð
Clearance ``!'' between pinion
front edge and pinion stopper
mm (in)Ð
Movement ``!'' in height of pinion
assembly mm (in)0.3 - 2.0
(0.012 - 0.079)
SEL633BA
STARTING SYSTEM
Assembly (Cont'd)
EL-51

Construction
Removal and Installation
CAUTION:
+Start service operation after removing the negative termi-
nal from the battery.
+Also remove the undercover, if equipped, before servicing.
Disassembly
REAR COVER
CAUTION:
Rear cover may be hard to remove because a ring is used to
lock outer race of rear bearing. To facilitate removal of rear
cover, heat just bearing box section with a 200W soldering
iron.
Do not use a heat gun, as it can damage diode assembly.
YEL783A
MEL610I
SEL032Z
CHARGING SYSTEM
EL-54

Assembly
RING FITTING IN REAR BEARING
+Fix ring into groove in rear bearing so that it is as close to the
adjacent area as possible.
CAUTION:
Do not reuse rear bearing after removal.
REAR COVER INSTALLATION
1. Fit brush assembly, diode assembly, regulator assembly and
stator.
2. Push brushes up with ®ngers and install them to rotor.
Take care not to damage slip ring sliding surface.
Service Data and Speci®cations (SDS)
ALTERNATOR
TypeA3TA4399
MITSUBISHI
Applied model RD28
Nominal rating V-A 12-100
Ground polarity Negative
Minimum revolution under no-load
(When 13.5V is applied) rpmLess than 1,300
Hot output current
(When 13.5V is applied)
A/rpmMore than 35/1,300
More than 72/2,500
Regulated output voltage V 14.1 - 14.7
Minimum length of brush mm (in) 5 (0.20)
Brush spring pressure
N (g, oz)4.6 - 5.8
(470 - 590, 16.58 - 20.81)
Slip ring minimum outer diameter
mm (in)22.1 (0.870)
Rotor (Field coil) resistanceW2.1 - 2.5
SEL044Z
SEL048Z
SEL049Z
CHARGING SYSTEM
EL-56

NATS Audio Link/LHD
DESCRIPTION
The link with the NATS IMMU implies that the radio can basically only be operated if connected to the match-
ing NATS IMMU to which the radio was initially ®tted on the production line.
Since radio operation is impossible after the link with the NATS is disrupted theft of the radio unit is basically
useless since special equipment is required to reset the radio.
Initialisation process for radios that are linked to the NATS IMMU
New radios will be delivered to the factories in the ``NEW'' state, i.e. ready to be linked with the vehicle's NATS.
When the radio in ``NEW'' state is ®rst switched on at the factory, it will start up communication with the vehi-
cle's immobiliser control unit (IMMU) and send a code (the ``Radio Code'') to the IMMU. The IMMU will then
store this code, which is unique to each radio, in its (permanent) memory.
Upon receipt of the code by the IMMU, the NATS will con®rm correct receipt of the radio code to the radio.
Hereafter, the radio will operate as normal.
During the initialisation process, ``NEW'' is displayed on the radio display. Normally though, communication
between Radio and IMMU takes such a short time (300 ms) that the radio seems to switch on directly with-
out showing ``NEW'' on its display.
Normal operation
Each time the radio is switched on afterwards, the radio code will be veri®ed between the radio unit and the
NATS before the radio becomes operational. During the code veri®cation process, ``WAIT'' is shown on the
radio display. Again, the communication takes such a short time (300 ms) that the radio seems to switch on
directly without showing ``WAIT'' on its display.
When the radio is locked
In case of a radio being linked with the vehicle's NATS (immobiliser system), disconnection of the link between
the radio and the IMMU will cause the radio to switch into the lock (``SECURE'') mode in which the radio unit
is fully inoperative. Hence, repair of the radio is basically impossible, unless the radio is reset to the ``NEW''
state for which special decoding equipment is required.
Both Blaupunkt and Clarion have provided their authorized service representatives with so called ``decoder
boxes'' which can bring the radio unit back to the ``NEW'' state, enabling the radio to be switched on after which
repair can be carried out. Subsequently, when the repaired radio is delivered to the ®nal user again, it will be
in the ``NEW'' state as to enable re-linking the radio to the vehicle's immobiliser system. As a result of the
above, repair of the radio can only be done by an authorized Blaupunkt or Clarion representative.
Note:
Radio manufacturer of Nissan Y61 models for Europe is ``Clarion''.
SERVICE PROCEDURE
Item Service procedure Description
Battery disconnection No additional action required. Ð
Radio needs repair Repair needs to be done by authorized represen-
tative of radio manufacturer since radio cannot
be operated unless it is reset to NEW state,
using special decoding equipment.Ð
Replacement of radio by new
partNo additional action required. Radio is delivered in NEW state.
Transferring radio to another
vehicle/replacement of radio
by an ``old'' partRadio needs to be reset to NEW state by autho-
rized representative of radio manufacturer.Ð
Replacement of IMMU by
new partNo additional action required. The new IMMU will be recognized by the radio
since a `blank' code is stored in the memory of
the IMMU. In case the radio recognizes this
`blank' code, it will request for input of the correct
CATS code after which the radio will switch back
to the initialisation process.
AUDIO
EL-174

Item Service procedure Description
Replacement of IMMU by old
partRadio needs to be reset to NEW state by autho-
rized representative of radio manufacturer.If a radio code has already been stored in
memory of the IMMU, the radio cannot be linked
to it. After switching on the radio, it will display
``SECURE'' after 1 minute.
No communication from
IMMU to radio1. If NATS is malfunctioning, check NATS sys-
tem.
2. After NATS is repaired, reset radio to NEW
state by authorized representative of radio
manufacture.After switching on the radio, the radio will display
``SECURE'' after 1 minute. Further use of radios
impossible until communication is established
again, or after radio is reset by authorized repre-
sentative of (radio) manufacturer.
NOTE: Authorized radio manufacturer representatives in Europe are listed in the technical bulletin
TB-EL 96-001 issued by Nissan Europe N.V.
AUDIO
NATS Audio Link/LHD (Cont'd)
EL-175

Trouble Diagnoses
SYMPTOM CHART
Symptom Possible cause Diagnoses/service order
No doors can be
locked or unlocked
by remote control
operation.Hazard reminder
also does not oper-
ate either.1. Remote controller battery
2. Key switch (insert)
3. Door switch
4. Power supply circuit for multi-
remote control unit
5. Ground circuit for multi-remote
control unit
6. Remote controller1. Check remote controller battery. Refer to EL-238.
2. Check key switch (insert) signal at terminalj
7of
multi-remote control unit.
3. Check door switch signal at terminalsj
1and
j
2of multi-remote control unit.
4. Make sure battery voltage is present at
terminalj
3of multi-remote control unit.
5. Check continuity between terminalj
5of multi-re-
mote control unit and ground.
6. Replace remote controller. Refer to EL-239.
Hazard reminder
operates properly.1. Super lock system
2. Lock/unlock signal to super
lock control unit1. Check that power door lock operates properly. If
NG, check super lock, EL-211.
2. Check lock/unlock signal to super lock control unit
at terminalsj
10andj11of multi-remote control unit.
(See NOTE.)
Hazard reminder does not operate properly. 1. 10A fuse
2. Multi-remote control relay-1
and 2
3. Hazard reminder circuit1. Check 10A fuse (No.
48, located in the fuse and
fusible link box).
2. Check multi-remote control relay-1 and 2.
3. Check harness for open or short between relays
and multi-remote control unit terminalj
12.
The new ID of remote controller
cannot be entered.1. Remote controller battery
2. Key switch (insert)
3. Door switch
4. Driver's door unlock sensor
5. Accessory power supply circuit
for multi-remote control unit
6. Remote controller1. Check remote controller battery. Refer to EL-238.
2. Check key switch (insert) signal at terminalj
7of
multi-remote control unit.
3. Check door switch signal at terminalsj
1andj2
of multi-remote control unit.
4. Check driver's door unlock sensor signal at termi-
nalj
6of multi-remote control unit.
5. Make sure battery voltage is present at terminal
j
8of multi-remote control unit while ignition
switch is in ACC position.
6. Replace remote controller. Refer to EL-239.
Refer to ``MULTI-REMOTE CONTROL UNIT INSPECTION TABLE'' on next page to check the control unit
signals.
NOTE:
+The unlock operation of multi-remote control system does not activate with key inserted in the ignition key
cylinder.
+The lock operation of multi-remote controller does not activate with the key inserted ignition key cylinder
or if one of the door is opened.
MULTI-REMOTE CONTROL SYSTEM
EL-237