1998 NISSAN PICK-UP alternator

Checking Manifold Tightening Torque
Checking should be performed while engine is cold
[approximately 20ÉC (68ÉF)].
Manifold bolts and nuts:
Intake
: 13 - 19 N´m (1.3 - 1.9 kg-m,9-14ft-lb)
Exhaust
: 25 - 29 N´m (2.5 - 3.0 kg-m, 18 - 22 ft-lb)
Exhaust tube nuts:
: 41.2 - 48.0 N´m (4.2 - 4.9 kg-m, 30 - 35 ft-lb)
Adjusting Intake and Exhaust Valve
Clearance
Adjustment should be made while engine is warm but not
running.
1. Set No. 1 cylinder in top dead center on its compression
stroke, and adjust valve clearance
V1,V2,V3andV6.
2. Set No. 4 cylinder at top dead center on its compression
stroke, and adjust valve clearance
V4,V5,V7andV8.
Valve clearance:
Intake
V1,V3,V5andV7
0.30 - 0.40 mm (0.012 - 0.016 in)
Exhaust
V2,V4,V6andV8
0.30 - 0.40 mm (0.012 - 0.016 in)
Adjusting screw lock nuts:
: 15 - 20 N´m (1.5 - 2.0 kg-m, 11 - 14 ft-lb)
lTighten lock nuts, by fixing the adjusting screws using a
minus driver.
Checking Drive Belt
1. Inspect for cracks, fraying, wear or oil adhesion. Replace if
necessary.
The belts should not touch the bottom of the pulley groove.
2. Check drive belt deflection by pushing on the belt midway
between pulleys.
Adjust if belt deflections exceed the limit.
Unit: mm (in)
Used belt deflection
Deflection of new belt
LimitDeflection after
adjustment
Alternator 20 (0.79) 11 - 13 (0.43 - 0.51) 9 - 11 (0.35 - 0.43)
Air conditioner
compressor12 (0.47) 6 - 7.5 (0.236 - 0.295) 5 - 6.5 (0.197 - 0.256)
Power steering oil
pump15 (0.59) 8 - 9.5 (0.315 - 0.374) 7 - 8.5 (0.276 - 0.335)
Applied pushing
force98 N (10 kg, 22 lb)
Check drive belt deflections when engine is cold.
SMA653C
SMA613C
ENGINE MAINTENANCETD
MA-23

Engine Maintenance (KA)
INSPECTION AND ADJUSTMENT
Drive belt deflection
Unit: mm (in)
Used belt deflection
Deflection of
new belt
LimitDeflection after
adjustment
Alternator 17 (0.67)10-12
(0.39 - 0.47)8-10
(0.31 - 0.39)
Air conditioner
compressor16 (0.63)10-12
(0.39 - 0.47)8-10
(0.31 - 0.39)
Power steering
oil pump15 (0.59)9-11
(0.35 - 0.43)7-9
(0.28 - 0.35)
Applied pushing
force98 N (10 kg, 22 lb)
Spark plug
Standard type ZFR5E-11
Hot type ZFR4E-11
Cold type ZFR6E-11
Plug gap mm (in) 1.0 - 1.1 (0.039 - 0.043)
Ignition wire
Resistance kW/m (kW/ft) Less than 12.2 (3.72)
Engine Maintenance (TD)
INSPECTION AND ADJUSTMENT
Drive belt deflection
Unit: mm (in)
Used belt deflection
Deflection of
new belt
LimitDeflection after
adjustment
Alternator20
(0.79)11-13
(0.43 - 0.51)9-11
(0.35 - 0.43)
Air conditioner
compressor12
(0.47)6 - 7.5
(0.236 - 0.295)5 - 6.5
(0.197 - 0.256)
Power steering
oil pump15
(0.59)8 - 9.5
(0.315 - 0.374)7 - 8.5
(0.276 - 0.335)
Applied pushing
force98 N (10 kg, 22 lb)
Inspect drive belt deflections when engine is cold.
Valve clearance (Hot)
Intake and exhaust mm (in) 0.30 - 0.40 (0.012 - 0.016)
Injection nozzle
Injection pressure
kPa (bar, kg/cm2, psi)
Used nozzle9,807 - 10,297
(98.1 - 103.0, 100 - 105,
1,422 - 1,493)
New nozzle10,297 - 11,278
(103.0 - 112.8, 105 - 115,
1,493 - 1,635)
Idle speed
FICD OFF FICD ON
Idle speed rpm
TD25 700 50 850 50
Chassis and Body Maintenance
INSPECTION AND ADJUSTMENT
Wheel balance
Maximum allowable
unbalanceDynamic
(At rim flange)
g (oz)10 (0.35) (one side)
Static g (oz) 20 (0.71)
SERVICE DATA AND SPECIFICATIONS (SDS)
MA-42

Wiring Diagram - MULTI -/LHD Models ............ 175
Trouble Diagnoses ............................................. 179
ID Code Entry Procedure .................................. 182
NATS (Nissan Anti-Theft System)/Gasoline
engine for LHD models........................................ 183
Component Parts and Harness Connector
Location.............................................................. 183
System Description ............................................ 183
System Composition .......................................... 184
Wiring Diagram - NATS -................................... 185
CONSULT .......................................................... 186
Trouble Diagnoses ............................................. 188
How to Replace NATS IMMU ............................ 197
NATS (Nissan Anti-Theft System)/Diesel
engine.................................................................... 198
Component Parts and Harness Connector
Location.............................................................. 198
System Description ............................................ 199
System Composition .......................................... 199
Wiring Diagram - NATS -/LHD Models.............. 200
Wiring Diagram - NATS -/RHD Models ............. 201
CONSULT .......................................................... 202
Trouble Diagnoses ............................................. 205LOCATION OF ELECTRICAL UNITS................... 217
Engine Compartment ......................................... 217
Passenger Compartment ................................... 218
HARNESS LAYOUT.............................................. 220
Outline ................................................................ 220
How to Read Harness Layout ........................... 221
Main Harness ..................................................... 222
Engine Room Harness....................................... 232
Engine Control Harness..................................... 240
Engine Harness ................................................. 242
Alternator Harness ............................................. 244
Instrument Harness............................................ 245
Room Lamp Harness/LHD Models .................... 246
Room Lamp Harness/RHD Models ................... 247
Chassis Harness and Tail Harness ................... 248
Front Door Harness (LH side) ........................... 249
Front Door Harness (RH side)........................... 250
Rear Door Harness ............................................ 251
BULB SPECIFICATIONS...................................... 252
Headlamp ........................................................... 252
Exterior Lamp..................................................... 252
Interior Lamp ...................................................... 252
WIRING DIAGRAM CODES (CELL CODES)....... 253
WIRING DIAGRAM REFERENCE CHART
COOLING FAN .......................................................................................................... LC SECTION
ECCS, IGNITION SYSTEM, QUICK-GLOW SYSTEM, FUEL HEATER SYSTEM .. EC SECTION
ANTI-LOCK BRAKE SYSTEM .................................................................................. BR SECTION
SRS ``AIR BAG'' ........................................................................................................ RS SECTION
HEATER AND AIR CONDITIONER .......................................................................... HA SECTION

EARTH CONNECT TO CONN. NO. CELL CODE
E6/E39 GLOW RELAY (RHD models with diesel engine
except for Europe)E44 EC-GLOW
HEADLAMP AIMING MOTOR LH E57 EL-H/AIM
HEADLAMP AIMING MOTOR RH E60 EL-H/AIM
HEADLAMP LH E13 EL-H/LAMP EL-DTRL
HEADLAMP RH E26 EL-H/LAMP EL-DTRL EL-DIMDIP
HEADLAMP WASHER AMPLIFIER E65 EL-HLC
IACV-FICD SOLENOID VALVE (Diesel engine) E37 HA-A/C,M
ISC-FI POT CONTROL SOLENOID VALVE E37 EC-FIPOT HA-A/C,M
POWER ANTENNA E46 EL-P/ANT
SHIELD WIRE (FRONT WHEEL SENSOR LH) E15 BR-ABS
SHIELD WIRE (FRONT WHEEL SENSOR RH) E31 BR-ABS
SIDE TURN SIGNAL LAMP LH E1 EL-TURN
SIDE TURN SIGNAL LAMP RH E45 EL-TURN
THERMOSWITCH E18 LC-COOL/F
TRIPLE-PRESSURE SWITCH E25 LC-COOL/F
VACUUM CONTROL SOLENOID VALVE E20 EC-IDLE
ALTERNATOR (Gasoline engine) E211EC-CHOKE EC-FPCM EL-CHARGE
EL-WARN
NEUTRAL POSITION SWITCH E220 EC-PNP/SW
POWER STEERING OIL PRESSURE SWITCH
(RHD 2WD models with KA engine and LHD
models)E208 EC-PST/SW
POWER STEERING OIL PRESSURE SWITCH
(RHD 4WD models with KA engine)E207 EC-PST/SW
SHIELD WIRE (REAR WHEEL SENSOR LH)
(4WD models)C5 BR-ABS
SHIELD WIRE (REAR WHEEL SENSOR RH)
(4WD models)C5 BR-ABS
SHIELD WIRE (REAR WHEEL SENSOR) (2WD
models)C6 BR-ABS
F7/F52
(RHD models
with KA
engine)CONDENSER F10 EC-IGN/SG
DISTRIBUTOR (POWER TRANSISTOR) F14 EC-IGN/SG
ECM (ECCS CONTROL MODULE) F51 EC-MAIN
F8
(RHD models
with KA
engine)DATA LINK CONNECTOR FOR CONSULT M11 EC-MIL/DL
DISTRIBUTOR (CAMSHAFT POSITION
SENSOR)F14 EC-CMPS
ECM (ECCS CONTROL MODULE) F51 EC-MAIN
SHIELD WIRE (CAMSHAFT POSITION
SENSOR)F14 EC-CMPS
SHIELD WIRE (MASS AIR FLOW SENSOR) F4 EC-MAFS
SHIELD WIRE (THROTTLE POSITION
SENSOR)F102 EC-TPS
A1 (Diesel
engine)ALTERNATOR A7 EC-GLOW EL-CHARGE EL-WARN
ENGINE COOLANT TEMPERATURE SENSOR
(Except for Europe)A11 EC-GLOW
R54 REAR WINDOW DEFOGGER R53 EL-DEF
GROUND DISTRIBUTION
EL-17

Trouble Diagnoses
Before conducting an alternator test, make sure that the battery is fully charged. A 30-volt voltmeter and
suitable test probes are necessary for the test. The alternator can be checked easily by referring to the
Inspection Table.
lBefore starting, inspect the fusible link.
lUse fully charged battery.
GASOLINE ENGINE MODELS
Check the fol-
lowing:
lWarning
lamp bulb
lFuse 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:lDrive beltlFuse for S terminallConnector (S, L terminal) con-
nection
Engine 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:
lIf the inspection result is OK even though the charging system is malfunctioning, check the B
terminal connection. (Check the tightening torque.)
lWhen field 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:
lField circuit is open.
lExcessive voltage is produced.
CHARGING SYSTEM
EL-36

Service Data and Specifications (SDS)
ALTERNATOR
TypeLR160-727C LR160-728C
HITACHI
Applied model KA24 TD25
Nominal rating V-A 12-60
Ground polarityNegative
Minimum revolution under no-load
(When 13.5V is applied) rpmLess than 1,000
Hot output current A/rpmMore than 17/1,300
More than 48/2,500
More than 57/5,000
(When 13.5V is applied)
Regulated output voltage V 14.1 - 14.7
Minimum length of brush
mm (in)6.0 (0.236)
Brush spring pressure
N (g, oz)1.0 - 3.4 (102 - 350, 3.60 - 12.34)
Slip ring minimum outer diameter
mm (in)26.0 (1.024)
Rotor (Field coil) resistanceW2.58
SEL049Z
CHARGING SYSTEM
Assembly (Cont'd)
EL-41

System Description
OPERATION
Headlamp system on vehicles for North Europe contains a daytime light system. The unit operates to illu-
minate headlamps low beam, parking, tail, license lamps and illuminations automatically in the following
conditions.
lThe engine is running with lighting switch in OFF position.
When the any of following conditions exists, the daytime light operation will be canceled.
lIgnition switch is in any position other than ON
lEngine is stopped
lLighting 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
lfrom alternator terminal L
lthrough daytime light control unit terminalV8
lto 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.
SEL667V
HEADLAMP Ð Daytime Light System Ð
EL-51

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-49).
Aiming Adjustment
Refer to ``HEADLAMP'' (EL-49).
HEADLAMP Ð Daytime Light System Ð
EL-57