engine NISSAN PICK-UP 1998 Repair Manual

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

EARTH CONNECT TO CONN. NO. CELL CODE
M1/M54 REAR COMBINATION LAMP RH (REAR FOG)
(RHD models except A-chassis)T2 EL-R/FOG
REAR COMBINATION LAMP RH (TAIL AND
STOP) (A-chassis models, and except for
Europe, Australia and China)T1 EL-TAIL/L EL-STOP/L
REAR COMBINATION LAMP RH (TAIL AND
STOP) (For Europe, Australia and China except
A-chassis models)T2 EL-TAIL/L EL-STOP/L
REAR COMBINATION LAMP RH (TURN SIG-
NAL) (A-chassis models, and except for
Europe, Australia and China)T1 EL-TURN
REAR COMBINATION LAMP RH (TURN SIG-
NAL) (For Europe, Australia and China except
A-chassis models)T2 EL-TURN
REAR FOG LAMP LH (LHD A-chassis models) T12 EL-R/FOG
REAR FOG LAMP RH (RHD A-chassis models) T10 EL-R/FOG
DOOR LOCK ACTUATOR DRIVER SIDE
(Unlock sensor)D10 EL-MULTI
LOCK KNOB SWITCH D8 EL-D/LOCK
POWER WINDOW MAIN SWITCH (Double cab) D5 EL-WINDOW EL-D/LOCK
POWER WINDOW MAIN SWITCH (Single cab
and King cab)D6 EL-WINDOW EL-D/LOCK
M33/M207
(LHD models
with KA
engine)CONDENSER M210 EC-IGN/SG
DISTRIBUTOR (POWER TRANSISTOR) M214 EC-IGN/SG
ECM (ECCS CONTROL MODULE) M32 EC-MAIN
M208
(LHD models
with KA
engine)DATA LINK CONNECTOR FOR CONSULT M11 EC-MIL/DL
DISTRIBUTOR (CAMSHAFT POSITION
SENSOR)M214 EC-CMPS
ECM (ECCS CONTROL MODULE) M32 EC-MAIN
NATS IMMU M68 EL-NATS
SHIELD WIRE (CAMSHAFT POSITION
SENSOR)M214 EC-CMPS
SHIELD WIRE (MASS AIR FLOW SENSOR) M204 EC-MAFS
SHIELD WIRE (THROTTLE POSITION
SENSOR)M302 EC-TPS
SHIELD WIRE (HEATED OXYGEN SENSOR) E3 EC-HO2S
E6/E39 NATS IMMU (Diesel engine) M69 EL-NATS
ABS ACTUATOR AND ELECTRIC UNIT E4 BR-ABS
BRAKE FLUID LEVEL SWITCH E2 EL-WARN
COOLING FAN MOTOR E24 LC-COOL/F
DAYTIME LIGHT UNIT E64 EL-DTRL
DIM-DIP LAMP UNIT E67 EL-DIMDIP
FRONT COMBINATION LAMP LH (PARKING)
(Except for Europe, Australia and China)E11 EL-TAIL/L
FRONT COMBINATION LAMP LH (PARKING)
(For Europe, Australia and China)E12 EL-TAIL/L
FRONT COMBINATION LAMP LH (TURN SIG-
NAL) (Except for Europe, Australia and China)E11 EL-TURN
FRONT COMBINATION LAMP LH (TURN SIG-
NAL) (For Europe, Australia and China)E12 EL-TURN
FRONT COMBINATION LAMP RH (PARKING)
(Except for Europe, Australia and China)E27 EL-TAIL/L
FRONT COMBINATION LAMP RH (PARKING)
(For Europe, Australia and China)E28 EL-TAIL/L
FRONT COMBINATION LAMP RH (TURN SIG-
NAL) (Except for Europe, Australia and China)E27 EL-TURN
FRONT COMBINATION LAMP RH (TURN SIG-
NAL) (For Europe, Australia and China)E28 EL-TURN
FUEL FILTER (FUEL HEATER) E56 EC-F/HEAT
FUEL FILTER SWITCH (RHD models with die-
sel engine)E5 EL-WARN EL-BUZZER
FUEL RETURN CONTROL SOLENOID VALVE
(RHD models with NA engine)E40 EC-F/RTN
GROUND DISTRIBUTION
EL-16

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

CAUTION:
If it becomes necessary to start the engine with a booster
battery and jumper cables,
a. Use a 12-volt booster battery.
b. After connecting battery cables, ensure that they are
tightly clamped to battery terminals for good contact.
c. Never add distilled water through the hole used to check
specific gravity.
How to Handle Battery
METHODS OF PREVENTING OVER-DISCHARGE
The following precautions must be taken to prevent over-dis-
charging a battery.
lThe battery surface (particularly its top) should always be
kept clean and dry.
lThe terminal connections should be clean and tight.
lAt every routine maintenance, check the electrolyte level.
This also applies to batteries designated as ``low mainte-
nance'' and ``maintenance-free''.
lWhen the vehicle is not going to be used over a long period
of time, disconnect the negative battery terminal.
lCheck the charge condition of the battery.
Periodically check the specific gravity of the electrolyte. Keep
a close check on charge condition to prevent over-discharge.
CHECKING ELECTROLYTE LEVEL
WARNING:
Do not allow battery fluid to come in contact with skin, eyes,
fabrics, or painted surfaces. After touching a battery, do not
touch or rub your eyes until you have thoroughly washed
your hands. If acid contacts eyes, skin or clothing, immedi-
ately flush with water for 15 minutes and seek medical atten-
tion.
MEL040F
MEL041F
MEL042F
BATTERY
EL-18

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
cYes
Does engine turn normally?
No (Turns slowly.)
cYes
Check ignition/fuel system.
Check battery as follows:lCharging conditionlTerminal connectionslTerminal corrosion
NG
cOK
Repair starter motor.
VA
Does starter motor turn?
No
cYes
Does gear shaft turn?
No
cYes
Check pinion clutch.
Check reduction gear, armature
and gear shaft.
Check fuse and fusible link.
OK
cNG
Replace.
Check battery as follows:lCharging conditionlTerminal connectionslTerminal corrosion
OK
VA
cNGlCharge battery.lRepair connections and corrosion
of battery terminals.
Check starting system wiring.
OK
cNG
Repair.
Does magnetic switch operation
sound occur?
Yes
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
cYes
Replace magnetic switch.
lAdjust pinion movement.lCheck pinion moving mecha-
nism.
lCheck ring gear.
cNo
Repair starter motor.
.
.
.
.
.
.
.
.
.
.
.
.
STARTING SYSTEM
EL-27

Wiring Diagram Ð CHARGE Ð/Gasoline
Engine
HEL318A
CHARGING SYSTEM
EL-34

Wiring Diagram Ð CHARGE Ð/Diesel Engine
HEL319A
CHARGING SYSTEM
EL-35