NISSAN X-TRAIL 2005 Service Repair Manual

CAN SYSTEM (TYPE 3)
LAN-67
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN

8. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect 4WD control unit connector and combination meter connector.
2. Check continuity between combination meter harness connector
M44 terminals 22 (W) and 23 (R).
OK or NG
OK >> GO TO 9.
NG >> Check the following harness. If any harness is dam-
aged, repair the harness.

Harness between combination meter and 4WD con-
trol unit

Harness between combination meter and harness
connector M75
9. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between combination meter harness connector
M44 terminals 22 (W), 23 (R) and ground.
OK or NG
OK >> GO TO 10.
NG >> Check the following harness. If any harness is dam-
aged, repair the harness.

Harness between combination meter and 4WD con-
trol unit

Harness between combination meter and harness connector M75
10. CHECK ECM AND COMBINATION METER INTERNAL CIRCUIT
Check components inspection. Refer to LAN-67, "
CHECK ECM AND COMBINATION METER INTERNAL
CIRCUIT" .
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to LAN-46, "Work Flow" .
NG >> Replace ECM and/or combination meter.
Component InspectionEKS00LUW
CHECK ECM AND COMBINATION METER INTERNAL CIRCUIT

Remove ECM and combination meter from vehicle.

Check resistance between ECM terminals 94 and 86.

Check resistance between combination meter terminals 22 and
23.22 (W) - 23 (R) : Continuity should not exist.
SKIA9780E
22 (W) - Ground : Continuity should not exist.
23 (R) - Ground : Continuity should not exist.
SKIA9980E
Unit TerminalResistance (Ω)
(Approx.)
ECM 94 - 86
108 - 132
Combination meter 22 - 23
PKIA0830E

LAN-68
[CAN]
CAN SYSTEM (TYPE 4)

CAN SYSTEM (TYPE 4)PFP:23710
System DescriptionEKS00LUX
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 LocationEKS00LUY
SKIB0125E

CAN SYSTEM (TYPE 4)
LAN-69
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN

Wiring Diagram — CAN —EKS00LUZ
TKWB0112E

LAN-70
[CAN]
CAN SYSTEM (TYPE 4)

TKWB0113E

CAN SYSTEM (TYPE 4)
LAN-71
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN

Work FlowEKS00LV0
1. Print all the data of “SELF-DIAG RESULTS” for “ENGINE”, “ABS” and “ALL MODE AWD/4WD” displayed
on CONSULT-II.
2. Print all the data of “CAN DIAG SUPPORT MNTR” for “ENGINE”, “ABS” and “ALL MODE AWD/4WD” dis-
played on CONSULT-II.
3. Attach the printed sheet of “SELF-DIAG RESULTS” and “CAN DIAG SUPPORT MNTR” onto the check
sheet. Refer to LAN-72, "
CHECK SHEET" .
4. Based on the results of “CAN DIAG SUPPORT MNTR”, put a check marks onto the items with “NG” or
“UNKWN” in the check sheet table. Refer to LAN-72, "
CHECK SHEET" .
NOTE:

If a check mark is put on “NG” on “INITIAL DIAG (Initial diagnosis)”, replace the control unit.

The “CAN DIAG SUPPORT MNTR” items, which are not in check sheet table, are not related to diag-
nostic procedure on service manual.
So it is not necessary to check the status of the “CAN DIAG SUPPORT MNTR” items not in check
sheet table.
5. According to the check sheet results (example), start inspection. Refer to LAN-73, "
CHECK SHEET
RESULTS (EXAMPLE)" .
PKIA8260E
PKIA8343E

LAN-72
[CAN]
CAN SYSTEM (TYPE 4)

CHECK SHEET
NOTE:
If a check mark is put on “NG” on “INITIAL DIAG (Initial diagnosis)”, replace the control unit.
PKIB9064E

CAN SYSTEM (TYPE 4)
LAN-73
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN

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 harness between ESP/TCS/ABS control unit and 4WD control unit. Refer to LAN-79, "Inspection
Between ESP/TCS/ABS Control Unit and 4WD Control Unit Circuit" .
PKIB9065E
PKIA9636E

LAN-74
[CAN]
CAN SYSTEM (TYPE 4)

Case 2
Check ECM circuit. Refer to LAN-80, "ECM Circuit Inspection" .
PKIB9066E
PKIA9637E

CAN SYSTEM (TYPE 4)
LAN-75
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN

Case 3
Check ESP/TCS/ABS control unit circuit. Refer to LAN-81, "ESP/TCS/ABS Control Unit Circuit Inspection" .
PKIB9067E
PKIA9638E

LAN-76
[CAN]
CAN SYSTEM (TYPE 4)

Case 4
Check steering angle sensor circuit. Refer to LAN-81, "Steering Angle Sensor Circuit Inspection" .
PKIB9068E
PKIA9639E