2003 NISSAN X-TRAIL window

BCS-6
TIME CONTROL UNIT

15 W/GSeat belt warning lamp
(passenger side)Seat belt warning lamp (passenger
side) is illuminated (seat belt is unfas-
tened).12V
Seat belt warning lamp (passenger
side) is not illuminated (seat belt is
unfastened).0V
16 B/R Ground — 0V
17 G Ignition switch (ON) — 12V
18 W/L Ignition key switch (Insert)Key inserted → key removed from Igni-
tion key cylinder12V → 0V
19 R/L Lighting switch 1ST, 2ND position: ON → OFF 12V → 0V
20 GY Door lock/unlock switch Neutral → Locked 5V → 0V
21 BR/WSeat belt buckle switch
(driver side)Seat belt buckle switch (driver side) is
unfastened.*20V
Seat belt buckle switch (driver side) is
fastened.*212V
22 G/ORSeat belt buckle switch
(passenger side)Seat belt buckle switch (passenger
side) is unfastened.0V
Seat belt buckle switch (passenger
side) is fastened.12V
23 PU Door lock/unlock switchNeutral → Door lock/Unlock switch is
pushed.5V → 0V
24 LG/RDoor key cylinder switch
(driver side)OFF (neutral) → ON (locked) 5V → 0V
25 GY/LDoor key cylinder switch
(driver side)OFF (neutral) → ON (unlocked) 5V → 0V
26 R/Y Interior room lampWhen interior room lamp is operated
using remote controller
(Lamp switch is “DOOR” position.)12V → 0V
27 G/W Rear window defogger relayOFF → ON
(Ignition key is “ON” position.)12V → 0V
28 Y/G Door unlock sensor (driver side) Driver door: Locked → Unlocked 10V → 0V
29*1 Y/LDoor unlock sensor
(passenger side)Passenger door: Locked → Unlocked 5V → 0V
30 SB Front door switch (driver side) OFF (closed) → ON (open) 5V → 0V
31 R/W Passenger and rear doors switch OFF (closed) → ON (open) 5V → 0V
32 OR Multi-remote control unitRemote controller lock button is pushed.
(Ignition switch is not “ON” position.)0V → 5V
33 P/L Multi-remote control unitRemote controller unlock button is
pushed.
(Ignition switch is not “ON” position.)0V → 5V
34 B/Y NATS release signal Ignition switch ON→OFF 0V → 5V Terminal
No.Wire
colorConnections Operation condition Voltage (Approximate values)

TIME CONTROL UNIT
BCS-7
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BCS

NOTE:
*1: With super lock system.
*2: When seat pressure switch is ON.
*3: Wire color is different depending on vehicle. Each wire color is as follows:
35 LG/B Rear window defogger switchRear window defogger switch is
pushed.0V
Rear window defogger switch is not
pushed.5V
36 *3 Combination meterWhen the vehicle speed is approx. 40
km (25 MPH). Terminal
No.Wire
colorConnections Operation condition Voltage (Approximate values)
ELF1080D
Vehicle Wire color
A/T models L/B
M/T models L/Y

AUDIO
AV-33
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AV

Trouble DiagnosesEKS00EHY
AUDIO UNIT
Symptom Possible causes Repair order
Audio unit inoperative (no digital display
and no sound from speakers).1. 10A fuse
2. 15A fuse
3. Audio unit ground
4. Audio unit1. Check 10A fuse [No. 4, located
in fuse block (J/B)]. Turn ignition
switch ON and verify that battery
positive voltage is present at ter-
minal 10 (with casette deck) ,3
(without casette deck) of audio
unit.
2. Check 15A fuse (No. 32, located
in fuse and fusible link box) and
verify that battery positive volt-
age is present at terminal 6 (with
casette deck), 9 (without casette
deck) of audio unit.
3. Check audio unit ground.
4. Remove audio unit for repair.
Individual rear speaker is noisy or inopera-
tive.1. Each speaker
2. Output circuit to each speaker1. Check speaker.
2. Check the output circuits to each
speaker between audio unit and
each speaker.
AM/FM stations are weak or noisy. 1. Roof antenna
2. Audio unit ground
3. Audio unit1. Check roof antenna.
2. Check audio unit ground condi-
tion.
3. Remove audio unit for repair.
Audio unit generates noise in AM and FM
modes with engine running.1. Poor audio unit ground
2. Loose or missing ground bonding straps
3. Ignition condenser or rear window defogger
noise suppressor condenser
4. Ignition coil
5. Audio unit1. Check audio unit ground.
2. Check ground bonding straps.
3. Replace ignition condenser or
rear window defogger noise sup-
pressor condenser.
4. Check ignition coil.
5. Remove audio unit for repair.
Audio unit generates noise in AM and FM
modes with accessories on (switch pops
and motor noise).1. Poor audio unit ground
2. Antenna
3. Accessory ground
4. Malfunctioning accessory1. Check audio unit ground.
2. Check antenna.
3. Check accessory ground.
4. Replace accessory.

PG-1
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
K ELECTRICAL
CONTENTS
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SECTION
A
B
PG

POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
POWER SUPPLY ROUTING ...................................... 2
Schematic ................................................................ 2
Wiring Diagram - POWER - ..................................... 3
BATTERY POWER SUPPLY - IGNITION SW. IN
ANY POSITION ..................................................... 3
ACCESSORY POWER SUPPLY - IGNITION SW.
IN “ACC” OR “ON” ................................................ 7
IGNITION POWER SUPPLY - IGNITION SW. IN
“ON” AND/OR “START” ......................................... 8
Fuse ....................................................................... 12
Fusible Link ............................................................ 12
Circuit Breaker ....................................................... 12
GROUND .................................................................. 13
Ground Distribution ................................................ 13
MAIN HARNESS/LHD MODELS ........................ 13
MAIN HARNESS/RHD MODELS ........................ 16
ENGINE ROOM HARNESS/LHD MODELS ....... 19
ENGINE ROOM HARNESS/RHD MODELS ....... 20
ENGINE ROOM HARNESS ................................ 21
ENGINE CONTROL HARNESS/GASOLINE
ENGINE MODELS .............................................. 22
ENGINE CONTROL HARNESS/DIESEL
ENGINE MODELS .............................................. 23
BODY HARNESS/LHD MODELS ....................... 24
BODY HARNESS/RHD MODELS ....................... 25
BODY NO. 2 HARNESS/LHD MODELS ............. 26
BODY NO. 2 HARNESS/RHD MODELS ............ 27
ROOM LAMP HARNESS .................................... 28
BACK DOOR SUB HARNESS/REAR WINDOW
DEFOGGER HARNESS ..................................... 29
HARNESS ................................................................. 30
Harness Layout ...................................................... 30
HOW TO READ HARNESS LAYOUTS ............... 30
OUTLINE/LHD MODELS .................................... 31
OUTLINE/RHD MODELS .................................... 32
MAIN HARNESS/LHD MODELS ........................ 33MAIN HARNESS/RHD MODELS ........................ 35
ENGINE ROOM HARNESS/LHD MODELS ........ 37
ENGINE ROOM HARNESS/RHD MODELS ....... 42
ENGINE CONTROL HARNESS .......................... 47
BODY HARNESS/LHD MODELS ....................... 52
BODY HARNESS/RHD MODELS ....................... 53
BODY NO. 2 HARNESS/LHD MODELS ............. 54
BODY NO. 2 HARNESS/RHD MODELS ............. 55
ROOM LAMP HARNESS .................................... 56
FRONT DOOR HARNESS/LHD MODELS .......... 57
FRONT DOOR HARNESS/RHD MODELS ......... 58
REAR DOOR HARNESS .................................... 59
BACK DOOR HARNESS .................................... 60
Wiring Diagram Codes (Cell Codes) ...................... 61
ELECTRICAL UNITS LOCATION ............................ 65
Electrical Units Location ......................................... 65
ENGINE COMPARTMENT .................................. 65
PASSENGER COMPARTMENT/LHD MODELS ... 66
PASSENGER COMPARTMENT/RHD MODELS ... 68
HARNESS CONNECTOR ......................................... 70
Description .............................................................. 70
HARNESS CONNECTOR (TAB-LOCKING
TYPE) .................................................................. 70
HARNESS CONNECTOR (SLIDE-LOCKING
TYPE) .................................................................. 71
ELECTRICAL UNITS ................................................ 72
Terminal Arrangement ............................................ 72
STANDARDIZED RELAY .......................................... 73
Description .............................................................. 73
NORMAL OPEN, NORMAL CLOSED AND
MIXED TYPE RELAYS ........................................ 73
TYPE OF STANDARDIZED RELAYS ................. 73
FUSE BLOCK - JUNCTION BOX (J/B) .................... 75
Terminal Arrangement ............................................ 75
FUSE AND FUSIBLE LINK BOX .............................. 76
Terminal Arrangement ............................................ 76

GROUND
PG-29
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PG

BACK DOOR SUB HARNESS/REAR WINDOW DEFOGGER HARNESS
CKIA0376E

HARNESS
PG-61
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Wiring Diagram Codes (Cell Codes) EKS0032J
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
1STSIG AT A/T 1st Signal
2NDSIG AT A/T 2nd Signal
3RDSIG AT A/T 3rd Signal
4THSIG AT A/T 4th Signal
4WD TF 4WD Control system
A/C ATC Air Conditioner
ABS BRC Anti-Lock Brake System
APP1PW EC Accelerator Pedal Position Sensor 1 Power Supply
APP2PW EC Accelerator Pedal Position Sensor 2 Power Supply
APPS1 EC Accelerator Pedal Position Sensor
APPS2 EC Accelerator Pedal Position Sensor
APPS3 EC Accelerator Pedal Position Sensor
AT/IND DI A/T Indicator
AUDIO AV Audio
BA/FTS AT A/T Fluid Temperature Sensor and TCM Power Supply
BACK/L LT Back-Up Lamp
BOOST EC Turbocharger Boost Sensor
BRK/SW EC Brake Switch
CAN AT CAN Communication Line
CAN EC CAN Communication Line
CAN LAN CAN System
CHARGE SC Charging System
CHIME DI Warning Chime
CIGAR WW Cigarette Lighter
CLOCK DI Clock
CKPS EC Crankshaft Position Sensor
CMPS EC Camshaft Position Sensor
COOL/F EC Cooling Fan Control
D/LOCK BL Power Door Lock
DEF GW Rear Window Defogger
DTRL LT Headlamp - With Daytime Light System
ECM/PW EC ECM Power Supply for Back-Up
ECMRLY EC ECM Relay
ECTS EC Engine Coolant Temperature Sensor
EGVC/V EC EGR Volume Control Valve
EGRVLV EC EGR Volume Control Valve
ENGSS AT Engine Speed Signal
ESP BRC ESP/TCS/ABS Control System
ETC1 EC Electric Throttle Control Function
ETC2 EC Electric Throttle Control Motor Relay
ETC3 EC Electric Throttle Control Motor

HARNESS
PG-63
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PG

PGC/V EC EVAP Canister Purge Volume Control Solenoid Valve
PHASE EC Camshaft Position Sensor (PHASE)
PHONE AV Telephone (Pre-wire)
PNP/SW AT Park/Neutral Position Switch
PNP/SW EC Park/Neutral Position Switch
PNPSW1 EC Park/Neutral Position Switch
POS EC Crankshaft Position Sensor (CKPS) (POS)
POWER PG Power Supply Routing
PRGVLV EC EVAP Canister Purge Volume Control Solenoid Valve
PRWIRE BL Theft Warning System (Pre-wire)
PS/SEN EC Power Steering Pressure Sensor
PST/SW EC Power Steering Oil Pressure Switch
R/FOG LT Rear Fog Lamp
ROOM/L LT Interior Room Lamp
RP/SEN EC Refrigerant Pressure Sensor
RRO2 EC Rear Heated Oxygen Sensor
RRO2/H EC Rear Heated Oxygen Sensor Heater
S/LOCK BL Power Door Lock - Super Lock
S/SIG EC Start Signal
S/WARN SB Seat Belt Warning System
SEAT SE Power Seat
SEN/PW EC Sensor Power Supply
SHIFT AT A/T Shift Lock System
SROOF RF Sunroof
SRS SRS Supplemental Restraint System
SSV/A AT Shift Solenoid Valve A
SSV/B AT Shift Solenoid Valve B
START SC Starting System
STEP/L LT Step Lamp
STOP/L LT Stop Lamp
TAIL/L LT Parking, License and Tail Lamps
TCC/V EC Turbocharger Boost Control Solenoid Valve
TCCSV EC Turbocharger Boost Control Solenoid Valve
TCV AT Torque Converter Clutch Solenoid Valve
TPS AT Throttle Position Sensor
TPS1 EC Throttle Position Sensor (Sensor 1)
TPS2 EC Throttle Position Sensor (Sensor 2)
TPS3 EC Throttle Position Sensor
TURN LT Turn Signal and Hazard Warning Lamp
VIAS EC Variable Induction Air Control System
VSSA/T AT Vehicle Speed Sensor A/T (Revolution Sensor)
VSSMTR AT Vehicle Speed Sensor MTR
WARN DI Warning Lamps
WINDOW GW Power Window Code Section Wiring Diagram Name

LT-66
ILLUMINATION

ILLUMINATIONPFP:27545
System Description EKS003C7
Power is supplied at all times

through 10A fuse [No. 31, located in the fuse and fusible link box]

to lighting switch terminal 11.
The lighting switch must be in the 1ST or 2ND position for illumination.
The following chart shows the power and ground connector terminals for the components included in the illu-
mination system.
Component Connector No. Power terminal Ground terminal
Headlamp washier switch M23 3 4
Headlamp aiming switch M24 3 4
Door mirror remote control switch M26 10 1
ESP off switch M25 3 4
Hazard switch M51 7 8
4WD mode switch M39 4 3
Rear window defogger switch M50 5 6
A/C auto amp. M52 12 11
Combination meter (LHD models) M46 56 66
Combination meter (RHD models) M46 45 56
Audio M42 2 1
CD auto changer M82 34 35
Heater control panel M55 2 6
A/T device M58 3 4
Cigarette lighter M56 3 2
Heated seat switch LH (LHD models) B131 5 6
Heated seat switch RH (LHD models) B132 5 6
Heated seat switch LH (RHD models) B35 5 6
Heated seat switch RH (RHD models) B34 5 6