2003 NISSAN X-TRAIL sensor

IDX-8
ALPHABETICAL INDEX
SRS - See Supplemental Restraint System .....SRS-5
SRS - Wiring diagram/LHD .............................SRS-10
SRS - Wiring diagram/RHD ............................SRS-12
SRS Trouble diagnoses ....................................SRS-7
Stall test (A/T) ......................................AT-65,AT-287
Standardized relay .............................................PG-74
START - Wiring diagram ........................SC-22,SC-23
Start signal ..........................EC-348,EC-623,EC-818
Starter ................................................................SC-21
Starting system ..................................................SC-21
Steering gear and linkage inspection ................MA-40
Steering knuckle ................................................FAX-7
Steering linkage .................................................PS-12
Steering wheel and column .......................PS-6,PS-9
Stop lamp ................................................LT-26,LT-42
Stop lamp switch ................................EC-329,EC-562
STOP/L - Wiring diagram ........................LT-26,LT-42
Strut (rear) ........................................................RSU-8
Suction control valve ........................................EC-772
Sunload sensor ...............ATC-98,ATC-100,ATC-107
Sunroof ................................................................RF-2
Super lock ..........................................................BL-24
Supplemental Restraint System .......................SRS-5
Supplemental restraint system - Wiring diagram/LHD ..
SRS-10
Supplemental restraint system - Wiring diagram/RHD .
SRS-12
Suspension .......................................................MA-41
Symbols and abbreviations .................................GI-22
Symptom matrix chart ...........EC-69,EC-417,EC-676
Synchronizer (M/T) ...............................MT-19,MT-24
System readiness test (SRT) code ....................EC-40
T
T/MTR - Wiring diagram ....................EC-275
,EC-538
Tachometer ................................................DI-4,DI-22
Tail lamp .................................................LT-30,LT-40
TAIL/L - Wiring diagram ......................................LT-30
Tailgate lamp ......................................................LT-30
TCM circuit diagram ...........................................AT-16
TCM inspection table .........................AT-126,AT-348
THEFT - Wiring diagram ....................................BL-65
Theft warning system .........................................BL-65
Thermal protector ............................................ATC-81
Thermostat(QR20DE) .......................................CO-21
Thermostat(YD22DDTi) ....................................CO-43
Three way catalyst function .............................EC-229
Three way catalyst(QR20DE) ...........................EM-22
Throttle control motor relay ................EC-279,EC-542
Throttle position sensor (TPS) ...........EC-146,EC-475
Throttle position switch ......................AT-266,AT-388
Time control system ..........................................BCS-3
Timing chain(QR20DE) .....................................EM-43
Timing chain(YD22DDTi) ..................EM-158,EM-163
TM/RLY - Wiring diagram ..................EC-281,EC-544
Torque converter installation .............AT-459,AT-556
TPS - Wiring diagram ........................EC-149,EC-479
Transfer case .....................................................TF-23
Transfer control unit inspection table ......TF-42,TF-49
Transmission case (M/T) ......................MT-18,MT-23
Trouble diagnoses ..............................................GI-10
Turbocharger charge air cooler(YD22DDTi) ...EM-114
Turbocharger(YD22DDTi) ...............................EM-119
TURN - Wiring diagram ..........................LT-17,LT-19
Turn signal lamp .....................................LT-17,LT-42
Two trip detection logic .......................EC-36,EC-401
V
Vacuum hose (brake system) ............................BR-19
Vacuum hose drawing (Engine control)EC-23,EC-388
Vacuum pump(YD22DDTi) .............................EM-131
Valve clearance(QR20DE) ...............................EM-40
Valve clearance(YD22DDTi) ...........................EM-154
Valve guide(QR20DE) ......................................EM-57
Valve guide(YD22DDTi) .................................EM-180
Valve lifter(QR20DE) ........................................EM-33
Valve lifter(YD22DDTi) ...................................EM-152
Valve seat(QR20DE) ........................................EM-58
Valve seat(YD22DDTi) ...................................EM-181
Valve spring(QR20DE) .....................................EM-60
Valve spring(YD22DDTi) ................................EM-183
VDC -Wiring diagram ......................................BRC-65
Vehicle speed sensor (VSS)EC-239,EC-513,EC-744
Ventilation air filter ........................................ATC-114
Viscosity number (SAE) ....................................MA-18
VSS - Wiring diagram .........EC-241,EC-515,EC-745
W
Warning chime ....................................................DI-52
Warning lamps ....................................................DI-39
Washer, front .....................................................WW-4
Washer, rear ....................................................WW-13
Water control valve(QR20DE) ..........................CO-21
Water pump(QR20DE) .....................................CO-19
Water pump(YD22DDTi) ...................................CO-40
Water temperature gauge ..........................DI-4,DI-22
Weatherstrip - See Exterior ...............................BL-10
Wheel alignment (front) ....................................FSU-6
Wheel alignment (rear) .....................................RSU-6
Wheel balance ..................................................MA-38
Wheel bearing (front axle) .................................FAX-7
Wheel bearing (rear) .........................................RAX-6
Wheel hub (front) ...............................................FAX-7
Wheel hub (rear) ...............................................RAX-6
Wheel sensor(VDC) ......................................BRC-119
Wheel sensors (ABS) .....................................BRC-48
WINDOW - Wiring diagram ..............................GW-24
Window, back ....................................................GW-7
Window, back door ............................................GW-7
Window, door ......................................GW-41,GW-43
Window, rear side ..............................................GW-5
Window, side - See Rear side window ..............GW-5
Windshield .........................................................GW-3

LAN-1
LAN SYSTEM
K ELECTRICAL
CONTENTS
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SECTION
A
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LAN
LAN SYSTEM
CAN
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
Precautions For Trouble Diagnosis .......................... 2
CAN SYSTEM ....................................................... 2
Precautions For Harness Repair .............................. 2
CAN SYSTEM ....................................................... 2
CAN COMMUNICATION ............................................ 3
System Description .................................................. 3
FOR A/T MODELS ................................................ 3
FOR M/T MODELS ............................................... 3
CAN SYSTEM (FOR A/T MODELS) ........................... 5
System Description .................................................. 5
Component Parts and Harness Connector Location..... 5
Wiring Diagram — CAN — ....................................... 6
Work Flow ................................................................ 7
CHECK SHEET ..................................................... 8
CHECK SHEET RESULTS (EXAMPLE) ............... 9
INSPECTION ........................................................ 9CAN Communication Circuit Check .......................... 9
Component Inspection ............................................ 10
ECM/TCM INTERNAL CIRCUIT INSPECTION... 10
CAN SYSTEM (FOR M/T MODELS) ........................ 11
System Description ................................................. 11
Component Parts and Harness Connector Location... 11
Wiring Diagram — CAN — ..................................... 12
Work Flow ............................................................... 13
CHECK SHEET ................................................... 14
CHECK SHEET RESULTS (EXAMPLE) ............. 15
INSPECTION ...................................................... 16
Circuit Check Between Steering Wheel Angle Sen-
sor and 4WD Control Unit ....................................... 16
ECM Circuit Check ................................................. 17
4WD Control Unit Circuit Check ............................. 18
Steering Wheel Angle Sensor Circuit Check .......... 18
ESP/TCS/ABS Control Unit Circuit Check .............. 19
CAN Communication Circuit Check ........................ 20
Component Inspection ............................................ 22
ECM / ESP/TCS/ABS CONTROL UNIT INTER-
NAL CIRCUIT INSPECTION ............................... 22

CAN COMMUNICATION
LAN-3
[CAN]
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LAN
CAN COMMUNICATIONPFP:23710
System DescriptionEKS001U3
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
FOR A/T MODELS
System diagram
Input/output signal chart
T: Transmit R: Receive
FOR M/T MODELS
System diagram
Input/output signal chart
T: Transmit R: Receive
SKIA0884E
Signals ECM TCM
Engine speed signal T R
Engine coolant temperature signal T R
Accelerator pedal position signal T R
A/T self-diagnosis signal R T
SKIA0885E
Signals ECMSteering wheel
angle sensor4WD control unitESP/ TCS / ABS
control unit
Engine speed signal T R R
Accelerator pedal position signal T R
ESP operation signal R R T
TCS operation signal R R T
ABS operation signal R R T
Stop lamp switch signalRT

LAN-4
[CAN]
CAN COMMUNICATION
Steering wheel angle sensor signal T R
ESP-OFFSW signalRT
Wheel speed sensor signalRT
4WD Mode signalTR Signals ECMSteering wheel
angle sensor4WD control unitESP/ TCS / ABS
control unit

CAN SYSTEM (FOR M/T MODELS)
LAN-13
[CAN]
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Work FlowEKS002FN
1. Print all the data of “SELF-DIAG RESULTS” and “DATA MONITOR” for “ENGINE”, “ALL MODE 4WD”,
and “ABS” displayed on CONSULT-II. Refer toEC-114, "
DTC U1000 CAN COMMUNICATION LINE"
(WITH EURO-OBD) orEC-460, "DTC U1000 CAN COMMUNICATION LINE"(WITHOUT EURO-OBD)
for“ENGINE”andRefertoTF-53, "
CAN COMMUNICATION SYSTEM"for “ALL MODE 4WD”. Refer to
BRC-108, "
Inspection 15 CAN Communication Circuit, ESP/TCS/ABS Control Unit and Steering Angle
Sensor"for “ABS”.
2. Attach the printed sheet of “SELF-DIAG RESULTS” and “DATA MONITOR” onto the check sheet. Refer to
LAN-14, "
CHECK SHEET"
3. Based on the data monitor results, put “v” marks onto the items with “UNKWN” or “NG” in the check sheet
table. Refer toLAN-14, "
CHECK SHEET"
NOTE:
If “NG” is displayed on “CAN COMM” for the diagnosed control unit, replace the control unit.
4. According to the check sheet results (example), start inspection. Refer toLAN-15, "
CHECK SHEET
RESULTS (EXAMPLE)"

LAN-16
[CAN]
CAN SYSTEM (FOR M/T MODELS)
NOTE:
If “NG” is displayed on “CAN COMM” for the diagnosed control unit, replace the control unit.
INSPECTION
Proceed trouble diagnosis according to the check sheet results (example).
Case 1:Replace ECM.
Case 2:Replace ESP/TCS/ABS control unit.
Case 3:Replace 4WD control unit.
Case 4:Check Harness between steering wheel angle sensor and 4WD control unit. Refer toLAN-16, "
Circuit
Check Between Steering Wheel Angle Sensor and 4WD Control Unit"
Case 5:Check ECM Circuit. Refer toLAN-17, "ECM Circuit Check"
Case 6:Check 4WD control unit Circuit. Refer toLAN-18, "4WD Control Unit Circuit Check"
Case 7:Check Steering wheel angle sensor Circuit. Refer toLAN-18, "Steering Wheel Angle Sensor Circuit
Check"
Case 8:Check ESP/TCS/ABS control unit Circuit. Refer toLAN-19, "ESP/TCS/ABS Control Unit Circuit
Check"
Case 9:Check CAN communication Circuit. Refer toLAN-20, "CAN Communication Circuit Check"
Circuit Check Between Steering Wheel Angle Sensor and 4WD Control UnitEKS002FO
1.CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Check following terminals and connector for damage, bend and loose connection. (control unit-side, sen-
sor-side and harness-side)
l4WD control unit.
lSteering wheel angle sensor.
lBetween 4WD control unit and steering wheel angle sensor.
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
SKIA0927E

CAN SYSTEM (FOR M/T MODELS)
LAN-17
[CAN]
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LAN
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect steering wheel angle sensor connector and harness connector M75.
2. Check continuity between steering wheel angle sensor harness
connector M81 terminals 4 (W), 5 (R) and harness connector
M75 terminals 8 (W), 19 (R).
OK or NG
OK >> GO TO 3.
NG >> Repair harness.
3.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect 4WD control unit connector.
2. Check continuity between harness connector E116 terminals
8(W), 19 (R) and 4WD control unit harness connector E122 ter-
minals 48 (W), 39 (R).
OK or NG
OK >> Reconnect all connectors to perform “SELF-DIAG
RESULTS” and “DATA MONITOR” for “ENGINE”, “ALL
MODE 4WD”, and “ABS” displayed on CONSULT-II.
Refer toEC-114, "
DTC U1000 CAN COMMUNICATION
LINE"(WITH EURO-OBD) orEC-460, "DTC U1000
CAN COMMUNICATION LINE"(WITHOUT EURO-OBD) for “ENGINE” and Refer toTF-53,
"CAN COMMUNICATION SYSTEM"for “ALL MODE 4WD”. Refer toBRC-108, "Inspection 15
CAN Communication Circuit, ESP/TCS/ABS Control Unit and Steering Angle Sensor"for “ABS”.
NG >> Repair harness.
ECM Circuit CheckEKS002FQ
1.CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Check following terminals and connector for damage, bend and loose connection. (control module-side
and harness-side)
lECM.
lHarness connector F41.
lHarness connector M61.
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.4(W) – 8(W) : Continuity should exist.
5(R) – 19(R) : Continuity should exist.
SKIA0928E
8(W) – 48(W) : Continuity should exist.
19(R) – 39(R) : Continuity should exist.
SKIA0929E

LAN-18
[CAN]
CAN SYSTEM (FOR M/T MODELS)
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ECM connector.
2. Check resistance between ECM harness connector F43 termi-
nals 33(W) and 34(R).
OK or NG
OK >> Replace ECM.
NG >> Repair harness between harness connector M75 and
ECM.
4WD Control Unit Circuit CheckEKS002FR
1.CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Check the terminals and connector of 4WD control unit for damage, bend and loose connection. (control
unit-side and harness-side)
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect 4WD control unit connector.
2. Check resistance between 4WD control unit harness connector
E122 terminals 48(W) and 39(R).
OK or NG
OK >> Replace 4WD control unit.
NG >> Repair harness between harness connector E119 and
4WD control unit.
Steering Wheel Angle Sensor Circuit CheckEKS002FS
1.CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Check the terminals and connector of steering wheel angle sensor for damage, bend and loose connec-
tion.(sensor-side and harness-side)
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.33(W) – 34(R) : Approx. 108 – 132W
SKIA0888E
48(W) – 39(R) : Approx. 54 – 66W
SKIA0930E