2003 NISSAN X-TRAIL Electronic Repair Manual

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Page 2377 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual LAN-1
LAN SYSTEM
K ELECTRICAL
CONTENTS
C
D
E
F
G
H
I
J
L
M
SECTION
A
B
LAN
LAN SYSTEM
CAN
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restrain

LAN-1
LAN SYSTEM
K ELECTRICAL
CONTENTS
C
D
E
F
G
H
I
J
L
M
SECTION
A
B
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

Page 2378 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual LAN-2
[CAN]
PRECAUTIONS
[CAN]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EKS001U0
The Supplemental Restraint System such as

Page 2379 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual CAN COMMUNICATION
LAN-3
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
CAN COMMUNICATIONPFP:23710
System DescriptionEKS001U3
CAN (Controller Area Network) is a serial communication line for real time application. I

Page 2380 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual 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 / A

Page 2381 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual CAN SYSTEM (FOR A/T MODELS)
LAN-5
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
CANSYSTEM(FORA/TMODELS)PFP:23710
System DescriptionEKS002AD
CAN (Controller Area Network) is a serial communication line for real tim

Page 2382 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual LAN-6
[CAN]
CANSYSTEM(FORA/TMODELS)
Wiring Diagram — CAN —
EKS002AF
TKWA0110E

Page 2383 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual CAN SYSTEM (FOR A/T MODELS)
LAN-7
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Work FlowEKS002AG
1. Print all the data of “SELF-DIAG RESULTS” and “DATA MONITOR” for “ENGINE” and “A/T” displayed on

Page 2384 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual LAN-8
[CAN]
CANSYSTEM(FORA/TMODELS)
CHECK SHEET
SKIA0886E

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