2003 NISSAN PICK-UP engine

HEL969B
HARNESS LAYOUT
Engine Room Harness (Cont'd)
EL-4067

Engine Control Harness
VG ENGINE
HEL970B
HARNESS LAYOUT
EL-4068

HEL971B
HARNESS LAYOUT
Engine Control Harness (Cont'd)
EL-4069

ENGINE COMPARTMENT Ð YD ENGINE (RHD models)
HEL972B
HARNESS LAYOUT
Engine Control Harness (Cont'd)
EL-4070

Use the chart below to find out what each wiring diagram code
stands for.
Refer to the wiring diagram code in the alphabetical index to find
the location (page number) of each wiring diagram.
Code Section Wiring Diagram Name
AAC/V EC IACV-AAC Valve
A/C, A HA Auto Air Conditioner
A/C, M HA Manual Air Conditioner
A/CCUT EC Air Conditioner Control
AIRREG EC IACV-Air Regulator
AUDIO EL Audio
BACK/L EL Back-up Lamp
CHIME EL Warning Chime
CMPS EC Camshaft Position Sensor
COOL/F LC, EC Cooling Fan Control
ECTS ECEngine Coolant Temperature
Sensor
F/FOG EL Front Fog Lamp
FICD EC IACV-FICD Solenoid Valve
F/PUMP EC Fuel Pump
GLOW EC Quick-glow System
H/AIM EL Headlamp Aiming Control
IGNSYS EC Ignition Signal
ILL EL Illumination
INJECT EC Injector
KS EC Knock Sensor
LOAD EC Electric Load Signal
MAFS EC Mass Air Flow SensorCode Section Wiring Diagram Name
MAIN ECMain Power Supply and Ground Cir-
cuit
METER ELSpeedometer, Tachometer, Temp.
and Fuel Gauges
MIL/DL EC MIL and Data Link Connectors
NATS EL Nissan Anti-theft System
O2H1B1 EC Heated Oxygen Sensor 1 Heater
O2H2B1 EC Heated Oxygen Sensor 2 Heater
O2S1B1 EC Heated Oxygen Sensor 1
O2S2B1 EC Heated Oxygen Sensor 2
PGC/V ECEVAP Canister Purge
Control Solenoid Valve
PNP/SW EC Park/Neutral Position Switch
POWER EL Power Supply Routing
PST/SW EC Power Steering Oil Pressure Switch
R/FOG EL Rear Fog Lamp
ROOM/L EL Interior Room Lamp
SRS RS Supplemental Restraint System
S/SIG EC Start Signal
TAIL/L EL Parking, License and Tail Lamps
TPS EC, AT Throttle Position Sensor
VSS EC Vehicle Speed Sensor
WARN EL Warning Lamps
WIRING DIAGRAM CODES (CELL CODES)
EL-4074

HEATER &
AIR CONDITIONER
SECTION
HA
MODIFICATION NOTICE:
lCompressor has been changed. (KA engine models)
lRefrigerant amount has been changed.
lFusible plug attached to liquid tank has been deleted.
lPressure relief valve has been added to compressor.
lWiring diagrams have been changed.
lThermo control amp. of auto A/C has been abolished and trouble diagnosis of magnet clutch has been
changed.
lPressure relief valve has been added to compressor. (KA24DE and YD25DDT engine models)
lRefrigerant amount has been changed. (YD25DDT engine models) Refer to SDS.
CONTENTS
MANUAL
PRECAUTIONS AND PREPARATION............... 4002
Supplemental Restraint System (SRS) ``AIR
BAG'' and ``SEAT BELT PRE-TENSIONER'' .. 4002
Precautions for Refrigerant Connection .......... 4003
DESCRIPTION..................................................... 4004
Refrigeration Cycle .......................................... 4004
TROUBLE DIAGNOSES..................................... 4005
Circuit Diagram - A/C, M - ............................... 4005
Wiring Diagram - A/C, M -/LHD Models with
KA, YD and ZD Engines .................................. 4006
Wiring Diagram - A/C, M -/RHD Models with
KA Engine ........................................................ 4009
Wiring Diagram - A/C, M -/RHD Models with
VG, YD and ZD Engines ................................. 4012
SERVICE DATA AND SPECIFICATIONS
(SDS).................................................................... 4015General Specifications ..................................... 4015
Inspection and Adjustment .............................. 4015
AUTO
PRECAUTIONS AND PREPARATION............... 4016
Supplemental Restraint System (SRS) ``AIR
BAG'' and ``SEAT BELT PRE-TENSIONER'' .. 4016
TROUBLE DIAGNOSES..................................... 4017
Circuit Diagram - A/C, A -................................ 4017
Wiring Diagram - A/C, A -................................ 4018
Magnet Clutch .................................................. 4023
SERVICE DATA AND SPECIFICATIONS
(SDS).................................................................... 4026
General Specifications ..................................... 4026
Inspection and Adjustment .............................. 4026

HA

Refrigeration Cycle
REFRIGERANT SYSTEM PROTECTION
The refrigerant system is also protected by a pressure relief valve located on the compressor (Except VG
engine models) or high-pressure flexible hose (VG engine models). When the pressure of refrigerant in the
system increases to an unusual level [more than 3,727 kPa (37.3 bar, 38 kg/cm
2, 540 psi)], the release port
on the pressure relief valve automatically opens and releases refrigerant into the atmosphere.
RHA286I
DESCRIPTIONMANUAL
HA-4004

Wiring Diagram Ð A/C, M Ð/LHD Models
with KA, YD and ZD Engines
GHA056A
TROUBLE DIAGNOSESMANUAL
HA-4006