Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Sentra 2000-2005 Approved Nissan Sentra 2005 LAN
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K ELECTRICAL
A
B
SECTION
LAN SYSTEM C
D
E
CONTENTS
CAN CHECK SHEET .................................................... 9 . F
CHECK SHEET RESULTS (EXAMPLE) ............ 10 .
PRECAUTIONS ......................................................... 2
. ECM Circuit Inspection .......................................... 12 .
Precautions for Supplemental Restraint System TCM Circuit Inspection .......................................... 12 . G
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Combination Meter Circuit Inspection .................... 13 .
SIONER" ................................................................. 2
. CAN Communication Circuit Inspection ................ 14 .
Precautions For Trouble Diagnosis ......................... 2 . Component Inspection ........................................... 15 .
CAN SYSTEM ...................................................... 2. H
CHECK ECM AND COMBINATION METER
Precautions For Harness Repair ............................. 2 . INTERNAL CIRCUIT .......................................... 15 .
CAN SYSTEM ...................................................... 2. CAN SYSTEM (TYPE 2) .......................................... 17 .
Wiring Diagrams and Trouble Diagnosis ................. 3 . System Description ................................................ 17
. I
CAN COMMUNICATION ........................................... 4 . Component Parts and Harness Connector Location 17 ...
System Description ................................................. 4
. Wiring Diagram -- CAN -- .................................... 18 .
CAN Communication Unit ....................................... 4 . Work Flow .............................................................. 19
. J
TYPE 1 ................................................................. 4
. CHECK SHEET .................................................. 20 .
TYPE 2 ................................................................. 5
. CHECK SHEET RESULTS (EXAMPLE) ............ 21 .
CAN SYSTEM (TYPE 1) ............................................ 6 . CAN Communication Circuit Inspection ................ 22 .
System Description ................................................. 6
. LAN
Component Inspection ........................................... 25 .
Component Parts and Harness Connector Location 6 ..... CHECK ECM AND COMBINATION METER
Wiring Diagram -- CAN -- ...................................... 7 . INTERNAL CIRCUIT .......................................... 25 .
Work Flow ............................................................... 8
. L
M
Revision: July 2005 LAN-1 2005 Sentra
PRECAUTIONS
[CAN]
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" UKS0024Z
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
q To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
q Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions For Trouble Diagnosis UKS00250
CAN SYSTEM
q Do not apply voltage of 7.0 V or higher to the measurement terminals.
q Use the tester with its open terminal voltage being 7.0 V or less.
Precautions For Harness Repair UKS00251
CAN SYSTEM
q Solder the repaired parts, and wrap with tape. [Frays of twisted
line must be within 110 mm (4.33 in).]
PKIA0306E
q Do not perform bypass wire connections for the repair parts.
(The spliced wire will become separated and the characteristics
of twisted line will be lost.)
PKIA0307E
Revision: July 2005 LAN-2 2005 Sentra
PRECAUTIONS
[CAN]
Wiring Diagrams and Trouble Diagnosis UKS00252
A
When you read wiring diagrams, refer to the following:
q GI-15, "How to Read Wiring Diagrams"
q PG-3, "POWER SUPPLY ROUTING" for power distribution circuit B
When you perform trouble diagnosis, refer to the following:
q GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES"
q GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident" C
Check for any Service bulletins before servicing the vehicle.
D
E
F
G
H
I
J
LAN
L
M
Revision: July 2005 LAN-3 2005 Sentra
CAN COMMUNICATION
[CAN]
CAN COMMUNICATION PFP:23710
System Description UKS00253
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.
CAN Communication Unit UKS00254
Go to CAN system, when selecting your CAN system type from the following table.
Body type Sedan
Axle 2WD
Engine QG18DE/QR25DE
Transmission A/T M/T
CAN system type 1 2
CAN system trouble diagnosis LAN-6, "CAN SYSTEM (TYPE 1)" LAN-17, "CAN SYSTEM (TYPE 2)"
TYPE 1
System diagram
LKIA0132E
Input/output signal chart
T: Transmit R: Receive
Signals ECM TCM Combination Meter
Accelerator pedal position signal T R
Output shaft revolution signal R T
A/T self-diagnosis signal R T
Closed throttle position signal T R
Wide open throttle position signal T R
Stop lamp switch signal R T
Overdrive control switch signal R T
O/D OFF indicator signal T R
Engine speed signal T R
Engine coolant temperature signal T R
Fuel consumption monitor signal* T R
Vehicle speed signal R T
Fuel level sensor signal R T
Malfunction indicator lamp signal T R
ASCD SET lamp signal T R
ASCD CRUISE lamp signal T R
Revision: July 2005 LAN-4 2005 Sentra
CAN COMMUNICATION
[CAN]
Signals ECM TCM Combination Meter
A
T R
Engine and A/T integrated control signal
R T
*: For QR25DE models only B
TYPE 2
System diagram
C
D
E
LKIA0133E
F
Input/output signal chart
T: Transmit R: Receive
G
Signals ECM Combination Meter
Engine speed signal T R
Engine coolant temperature signal T R H
Fuel consumption monitor signal* T R
Vehicle speed signal R T
Fuel level sensor signal R T
I
Malfunction indicator lamp signal T R
ASCD SET lamp signal T R J
ASCD CRUISE lamp signal T R
*: For QR25DE models
LAN
L
M
Revision: July 2005 LAN-5 2005 Sentra
CAN SYSTEM (TYPE 1)
[CAN]
CAN SYSTEM (TYPE 1) PFP:23710
System Description UKS00255
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.
Component Parts and Harness Connector Location UKS00256
BKIA0072E
Revision: July 2005 LAN-6 2005 Sentra
CAN SYSTEM (TYPE 1)
[CAN]
Wiring Diagram -- CAN -- UKS00257
A
B
C
D
E
F
G
H
I
J
LAN
L
M
BKWA0256E
Revision: July 2005 LAN-7 2005 Sentra
CAN SYSTEM (TYPE 1)
[CAN]
Work Flow UKS00258
1. Print all the data of "SELF-DIAG RESULTS" for "ENGINE" and "A/T" displayed on CONSULT-II.
PKIA8260E
2. Print all the data of "CAN DIAG SUPPORT MNTR" for "ENGINE" and "A/T" displayed on CONSULT-II.
PKIA8343E
3. Attach the printed sheet of "SELF-DIAG RESULTS" and "CAN DIAG SUPPORT MNTR" onto the check
sheet. Refer to LAN-9, "CHECK SHEET" .
4. Based on the "CAN DIAG SUPPORT MNTR" results, put check marks onto the items with "UNKWN" or
"NG" in the check sheet table. Refer to LAN-9, "CHECK SHEET" .
NOTE:
If a check mark is put on "NG" on "INITIAL DIAG (Initial diagnosis)", replace the control unit.
5. According to the check sheet results (example), start inspection. Refer to LAN-10, "CHECK SHEET
RESULTS (EXAMPLE)" .
Revision: July 2005 LAN-8 2005 Sentra
CAN SYSTEM (TYPE 1)
[CAN]
CHECK SHEET
NOTE: A
If a check mark is put on "NG" on "INITIAL DIAG (Initial diagnosis)", replace the control unit.
B
C
D
E
F
G
H
I
J
LAN
L
M
WKIA2724E
Revision: July 2005 LAN-9 2005 Sentra
CAN SYSTEM (TYPE 1)
[CAN]
CHECK SHEET RESULTS (EXAMPLE)
NOTE:
If a check mark is put on "NG" on "INITIAL DIAG (Initial diagnosis)", replace the control unit.
Case 1
Check ECM circuit. Refer to LAN-12, "ECM Circuit Inspection" .
WKIA2727E
PKIA8750E
Case 2
Check TCM circuit. Refer to LAN-12, "TCM Circuit Inspection" .
WKIA2728E
PKIA8751E
Revision: July 2005 LAN-10 2005 Sentra
CAN SYSTEM (TYPE 1)
[CAN]
Case 3
Check combination meter circuit. Refer to LAN-13, "Combination Meter Circuit Inspection" . A
B
C
D
WKIA2729E
E
F
G
H
PKIA8752E
Case 4
Check CAN communication circuit. Refer to LAN-14, "CAN Communication Circuit Inspection" . I
J
LAN
L
WKIA2730E
M
Revision: July 2005 LAN-11 2005 Sentra
CAN SYSTEM (TYPE 1)
[CAN]
ECM Circuit Inspection UKS00259
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Check terminals and connectors of ECM for damage, bend and loose connection (control module side
and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ECM connector.
2. Check resistance between ECM harness connector F59 termi-
nals 94 (L) and 86 (Y).
94 (L) ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo