1998 NISSAN PICK-UP engine

System Inspection
1. Turn ignition switch ``OFF''. Disconnect fuel temperature
switch harness connector.
2. Connect a lead wire, as shown, between terminals of fuel
temperature switch.
3. Run engine at about 1,000 rpm. After several minutes, make
sure that fuel heater is hot.
Be careful not to burn yourself.
4. If fuel heater does not operate, check fuel heater system for
wire harness and electrical components.
Component Inspection
Fuel heater
1. Check continuity for fuel heater.
2. If fuel heater has malfunction, replace fuel filter heater.
Fuel temperature switch
Remove fuel temperature switch and check the operation by
changing atmospheric temperature using dry ice.
Temperature
ÉC (ÉF)Operation Continuity
Decreased to minus
11-19(52-66)OFF®ON ON: Exists.
Increased to approx.
0 (32)ON®OFF OFF: Does not exist.
If NG, replace fuel temperature switch.
DEC036
DEC037
DEC038
SEF909V
FUEL HEATER SYSTEMTD
EC-228

When installing, use a new O-ring.
WARNING:
Do not touch the cooled fuel temperature switch with your
bare hand.
Oil pressure switch
1. Run engine at about 1,000 rpm.
2. Check continuity for oil pressure switch.
3. If oil pressure switch has malfunction, replace it.
Fuel heater relay
1. Check fuel heater relay operation.
2. If fuel heater relay does not operate, replace it.
SEF414F
SEF415F
DEC039
.)
.DEC039
FUEL HEATER SYSTEMTD
Component Inspection (Cont'd)
EC-229

General Specifications
PRESSURE REGULATOR
Fuel pressure
kPa (bar, kg/cm2, psi)
At idleApproximately
235 (2.35, 2.4, 34)
A few seconds after ignition
switch is turned OFF to ONApproximately
294 (2.94, 3.0, 43)
Inspection and Adjustment
Idle speed*1 rpm Base idle speed*3 750 25
No-load*2
(in ``N'' position)Target idle speed 800 50
Air conditioner: ON
(in ``N'' position)900 or more
Ignition timing 10É 2É BTDC
Throttle position touch
speed rpm1,000 150
*1: Feedback controlled and needs no adjustments
*2: Under the following conditions:
lAir conditioner switch: OFFlSteering wheel: Kept in straight-ahead positionlElectrical load: OFF (Lights, heater fan & rear window defog-
ger)
*3: Throttle position sensor connector is disconnected.
IGNITION COIL
Primary voltage V Battery voltage (11 - 14)
Primary resistance
[at 25ÉC (77ÉF)]WLess than 1.0
Secondary resistance
[at 25ÉC (77ÉF)] kW7-13
MASS AIR FLOW SENSOR
Supply voltage V Battery voltage (11 - 14)
Output voltage at idle V1.3 - 1.7 at idle*
1.7 - 2.1 at 2,500 rpm*
*: Engine is warmed up sufficiently and running under no-load.
ENGINE COOLANT TEMPERATURE
SENSOR
Temperature ÉC (ÉF) Resistance
20 (68) 2.1 - 2.9 kW
50 (122) 0.68 - 1.00 kW
90 (194) 0.236 - 0.260 kW
FUEL PUMP
Resistance [at 25ÉC (77ÉF)]W0.2 - 5.0
IACV-AAC VALVE
Resistance [at 25ÉC (77ÉF)]WApproximately 10.0
INJECTOR
Resistance [at 25ÉC (77ÉF)]W10-14
RESISTOR
Resistance [at 25ÉC (77ÉF)] kWApproximately 2.2
THROTTLE POSITION SENSOR
Throttle valve conditions Resistance [at 25ÉC (77ÉF)]
Completely closed Approximately 0.6 kW
Partially open 0.6 - 4.0 kW
Completely open Approximately 4.0 kW
HEATED OXYGEN SENSOR HEATER
Resistance [at 25ÉC (77ÉF)]W2.3 - 4.3
INTAKE AIR TEMPERATURE SENSOR
Temperature ÉC (ÉF) Resistance
20 (68) 2.1 - 2.9 kW
80 (176) 0.27 - 0.38 kW
SERVICE DATA AND SPECIFICATIONS (SDS)KA
EC-232

VE-type Injection Pump
APPLICATION
Engine Destination Part No. Pump assembly No. Remarks
TD25 Europe16700 3S300 104780-4951With Nissan Anti-Theft System
(NATS)
16700 3S301 104780-4961
INSPECTION AND ADJUSTMENT
Plunger lift
EnginePlunger lift at TDC
mm (in)
Part No.Pump assem-
bly No.
Inspection Adjustment
TD250.71 0.05
(0.0280
 0.0020)0.71 0.02
(0.0280
 0.0008)16700 3S300 104780-4951
16700 3S301 104780-4961
Maximum engine speed
EngineMaximum engine speed
(Under no load) rpm
TD25 5,000
+100
þ200
Injection Nozzle
INSPECTION AND ADJUSTMENT
Injection nozzle assembly
Unit: kPa (bar, kg/cm2, psi)
Initial injection pressure
New10,297 - 11,278
(103.0 - 112.8, 105 - 115, 1,493 - 1,635)
Used9,807 - 10,297
(98.1 - 103.0, 100 - 105, 1,422 - 1,493)
Adjusting shims
Thickness mm (in) Part No.
0.1 (0.004)
0.2 (0.008)
0.3 (0.012)
0.4 (0.016)
0.5 (0.020)
0.52 (0.0205)
0.54 (0.0213)
0.56 (0.0220)
0.58 (0.0228)
0.8 (0.031)16613-65N00
16613-65N01
16613-65N02
16613-65N03
16613-65N04
16613-65N05
16613-65N06
16613-65N07
16613-65N08
16613-65N09
DEC040
SERVICE DATA AND SPECIFICATIONS (SDS)TD
EC-233

ELECTRICAL SYSTEM
SECTION
EL
When you read wiring diagrams:
lRead 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 ELECTRI-
CAL INCIDENT''.
CONTENTS
PRECAUTIONS......................................................... 1
Supplemental Restraint System (SRS) ``AIR
BAG'' (4WD models).............................................. 1
Supplemental Restraint System (SRS) ``AIR
BAG'' (2WD models).............................................. 1
HARNESS CONNECTOR.......................................... 2
Description ............................................................. 2
STANDARDIZED RELAY.......................................... 3
Description ............................................................. 3
POWER SUPPLY ROUTING..................................... 5
Schematic .............................................................. 5
Wiring Diagram - POWER -................................... 6
Fuse ..................................................................... 13
Fusible Link .......................................................... 13
Circuit Breaker Inspection.................................... 13
GROUND DISTRIBUTION....................................... 14
BATTERY................................................................. 18
How to Handle Battery......................................... 18
Battery Test and Charging Chart......................... 21
Service Data and Specifications (SDS) ............... 25
STARTING SYSTEM............................................... 26
Wiring Diagram - START - .................................. 26
Trouble Diagnoses ............................................... 27
Construction ......................................................... 28
Removal and Installation ..................................... 30
Inspection ............................................................. 30
Assembly.............................................................. 32
Service Data and Specifications (SDS) ............... 33
CHARGING SYSTEM.............................................. 34
Wiring Diagram - CHARGE -/Gasoline Engine ... 34
Wiring Diagram - CHARGE -/Diesel Engine ....... 35Trouble Diagnoses ............................................... 36
Construction ......................................................... 38
Removal and Installation ..................................... 39
Disassembly ......................................................... 39
Inspection ............................................................. 39
Assembly.............................................................. 40
Service Data and Specifications (SDS) ............... 41
COMBINATION SWITCH........................................ 42
Check ................................................................... 42
Replacement ........................................................ 43
HEADLAMP - Conventional Type -....................... 44
Wiring Diagram - H/LAMP -/LHD Models ............ 44
Wiring Diagram - H/LAMP -/RHD Models ........... 46
Trouble Diagnoses ............................................... 48
Bulb Replacement................................................ 49
Aiming Adjustment ............................................... 49
Low Beam ............................................................ 50
HEADLAMP - Daytime Light System -................. 51
System Description .............................................. 51
Schematic ............................................................ 53
Wiring Diagram - DTRL - ..................................... 54
Trouble Diagnoses ............................................... 57
Bulb Replacement................................................ 57
Aiming Adjustment ............................................... 57
HEADLAMP - Dim-dip Lamp System -................. 58
System Description .............................................. 58
Schematic ............................................................ 58
Wiring Diagram - DIMDIP -.................................. 59
Trouble Diagnoses ............................................... 62
Bulb Replacement................................................ 62
Aiming Adjustment ............................................... 62
EL

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
M1/M54 ACCESSORY RELAY (In fuse block) M14 EL-POWER
AIR BAG DIAGNOSIS SENSOR UNIT (4WD
models)M110 RS-SRS
ASHTRAY ILLUMINATION M34 EL-ILL
BLOWER RELAY (In fuse block) M14 EL-POWER
CHECK CONNECTOR (NA engine) M12 EC-CHOKE
CHECK CONNECTOR (Z engine) M13 EC-CHOKE
CIGARETTE LIGHTER SOCKET M37 EL-CIGAR
COMBINATION FLASHER UNIT M15 EL-TURN
DOOR LOCK TIMER M51 EL-D/LOCK
DOOR SWITCH DRIVER SIDE (For Europe) M118 EL-BUZZER EL-MULTI
ECM (ENGINE CONTROL MODULE) M66 EC-GLOW EC-PLA EC-EGRC/V
FAN SWITCH ILLUMINATION (Except for
Europe and Australia)M403 HA-HEATER HA-A/C,M EL-ILL
FAN SWITCH ILLUMINATION (For Europe and
Australia)M40 HA-HEATER HA-A/C,M EL-ILL
FAN SWITCH (Except for Europe and Australia) M404 EC-FIPOT HA-HEATER HA-A/C,M
FAN SWITCH (For Europe and Australia) M39 HA-HEATER HA-A/C,M
FRONT SEAT LH M119 EL-H/SEAT
FRONT SEAT RH M122 EL-H/SEAT
FRONT WIPER AMPLIFIER
(RHD models without KA engine and LHD mod-
els)M220 EL-WIPER
FRONT WIPER AND WASHER SWITCH M28 EL-WIPER
FRONT WIPER MOTOR
(RHD models without KA engine and LHD mod-
els)M221 EL-WIPER
FUEL FILTER SWITCH (LHD models with die-
sel engine)M259 EL-WARN EL-BUZZER
FUEL PUMP CONTROL MODULE M22 EC-FPCM
FUEL RETURN CONTROL SOLENOID VALVE
(LHD models with NA engine)M257 EC-F/RTN
GLOW CONTROL UNIT
(TD27 engine except for cold areas and QD
engine)M29 EC-GLOW EC-PLA
GLOW CONTROL UNIT (TD27 engine for cold
areas)M30 EC-GLOW EC-PLA
GLOW RELAY-1 (LHD models with diesel
engine except for Europe)M253 EC-GLOW
GLOW RELAY-2 (TD27 engine for cold areas) M256 EC-GLOW
HAZARD SWITCH M41 EL-TURN EL-ILL
HEADLAMP WASHER SWITCH M70 EL-ILL EL-HLC
HEATED SEAT SWITCH LH M602 EL-H/SEAT
HEATED SEAT SWITCH RH M603 EL-H/SEAT
IACV-FICD SOLENOID VALVE (KA engine) M203 EC-FICD HA-A/C,M
IGNITION RELAY (In fuse block) M14 EL-POWER
MULTI-REMOTE CONTROL RELAY-3 M706 EL-MULTI
MULTI-REMOTE CONTROL RELAY-4 M707 EL-MULTI
MULTI-REMOTE CONTROL UNIT M703 EL-MULTI
POWER WINDOW RELAY M9 EL-WINDOW
REAR WINDOW DEFOGGER SWITCH M42 EL-DEF
SEAT BELT SWITCH M109 EL-WARN
SPIRAL CABLE (2WD models with air bag) M26 RS-SRS
COMBINATION METER (4WD WARNING
LAMP)N6 EL-WARN
COMBINATION METER (ABS WARNING
LAMP)N6 BR-ABS EL-WARN
GROUND DISTRIBUTION
EL-14

EARTH CONNECT TO CONN. NO. CELL CODE
M1/M54 COMBINATION METER (AIR BAG WARNING
LAMP)N5 RS-SRS EL-WARN
COMBINATION METER (CLOCK ILLUMINA-
TION)N6 EL-ILL EL-CLOCK
COMBINATION METER (DIGITAL CLOCK) N6 EL-CLOCK
COMBINATION METER (FUEL GAUGE) N5 EL-METER
COMBINATION METER (HIGH BEAM INDICA-
TOR)N5 EL-H/LAMP EL-DTRL EL-DIMDIP
COMBINATION METER (METER ILLUMINA-
TION)N6 EL-ILL
COMBINATION METER (ODO/TRIP METER
ILLUMINATION)N6 EL-ILL
COMBINATION METER (REAR FOG LAMP
INDICATOR)N6 EL-R/FOG
COMBINATION METER (TURN LH INDICA-
TOR)N6 EL-TURN
COMBINATION METER (TURN RH INDICA-
TOR)N6 EL-TURN
COMBINATION METER (UNIFIED METER
CONTROL UNIT)N5 EC-VSS EC-GLOW EL-METER
COMBINATION METER (WATER TEMP.
GAUGE)N5 EL-METER
DOOR MIRROR REMOTE CONTROL SWITCH N3 EL-MIRROR
FRONT WIPER AMPLIFIER (RHD models with
KA engine)F20 EL-WIPER
FRONT WIPER MOTOR (RHD models with KA
engine)F21 EL-WIPER
HEADLAMP AIMING SWITCH N7 EL-H/AIM
INTERIOR LAMP (Single cab and King cab) R4 EL-INT/L
SPOT LAMP R3 EL-INT/L
FUEL TANK GAUGE UNIT (With electric fuel
pump)C3EC-FPCM EC-F/PUMP EL-METER
EL-WARN
FUEL TANK GAUGE UNIT (With mechanical
fuel pump)C4 EL-METER EL-WARN
LICENSE PLATE LAMP LH (With step bumper) T7 EL-TAIL/L
LICENSE PLATE LAMP LH (Without step
bumper)T6 EL-TAIL/L
LICENSE PLATE LAMP RH (With step bumper) T3 EL-TAIL/L
LICENSE PLATE LAMP RH (Without step
bumper)T5 EL-TAIL/L
REAR COMBINATION LAMP LH (BACK-UP)
(A-chassis models, and except for Europe,
Australia and China)T8 EL-BACK/L
REAR COMBINATION LAMP LH (BACK-UP)
(For Europe, Australia and China except
A-chassis models)T9 EL-BACK/L
REAR COMBINATION LAMP LH (REAR FOG)
(LHD models except A-chassis)T9 EL-R/FOG
REAR COMBINATION LAMP LH (TAIL AND
STOP) (A-chassis models, and except for
Europe, Australia and China)T8 EL-TAIL/L EL-STOP/L
REAR COMBINATION LAMP LH (TAIL AND
STOP) (For Europe, Australia and China except
A-chassis models)T9 EL-TAIL/L EL-STOP/L
REAR COMBINATION LAMP LH (TURN SIG-
NAL) (A-chassis models, and except for
Europe, Australia and China)T8 EL-TURN
REAR COMBINATION LAMP LH (TURN SIG-
NAL) (For Europe, Australia and China except
A-chassis models)T9 EL-TURN
REAR COMBINATION LAMP RH (BACK-UP)
(A-chassis models, and except for Europe, Aus-
tralia and China)T1 EL-BACK/L
REAR COMBINATION LAMP RH (BACK-UP)
(For Europe, Australia and China except
A-chassis models)T2 EL-BACK/L
GROUND DISTRIBUTION
EL-15