NISSAN X-TRAIL 2005 Service Repair Manual

CAN SYSTEM (TYPE 2)
LAN-37
[CAN]
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Inspection Between ABS Actuator and Electric Unit (Control Unit) and 4WD
Control Unit Circuit
EKS00LUD
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check following terminals and connectors for damage, bend and loose connection (connector side and
harness side).
–Harness connector E116
–Harness connector M75
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector and harness connector E116.
2. Check the following.
–LHD models
 Check continuity between ABS actuator and electric unit (control
unit) harness connector E69 terminals 20 (W), 23 (R) and har-
ness connector E116 terminals 14 (W), 5 (R).
–RHD models
 Check continuity between ABS actuator and electric unit (control
unit) harness connector E69 terminals 20 (W), 23 (R) and har-
ness connector E116 terminals 9 (W), 2 (R).
OK or NG
OK >> GO TO 3.
NG >> Repair harness.20 (W) - 14 (W) : Continuity should exist.
23 (R) - 5 (R) : Continuity should exist.
SKIA9574E
20 (W) - 9 (W) : Continuity should exist.
23 (R) - 2 (R) : Continuity should exist.
SKIA9575E

LAN-38
[CAN]
CAN SYSTEM (TYPE 2)

3. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect 4WD control unit connector.
2. Check the following.
–LHD models
 Check continuity between harness connector M75 terminals 14
(W), 5 (R) and 4WD control unit harness connector M107 termi-
nals 8 (W), 16 (R).
–RHD models
 Check continuity between harness connector M75 terminals 9
(W), 2 (R) and 4WD control unit harness connector M107 termi-
nals 8 (W), 16 (R).
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to
LAN-30, "
Work Flow" .
NG >> Repair harness.
ECM Circuit InspectionEKS00LUE
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check following terminals and connectors for damage, bend and loose connection (control module side
and harness side).
–ECM connector
–Harness connector M75
–Harness connector E116
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.14 (W) - 8 (W) : Continuity should exist.
5 (R) - 16 (R) : Continuity should exist.
SKIA9576E
9 (W) - 8 (W) : Continuity should exist.
2 (R) - 16 (R) : Continuity should exist.
SKIA9577E

CAN SYSTEM (TYPE 2)
LAN-39
[CAN]
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2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ECM connector.
2. Check resistance between ECM harness connector M118 termi-
nals 94 (G/R) and 86 (GY/R).
OK or NG
OK >> Replace ECM.
NG >> Repair harness between ECM and ABS actuator and
electric unit (control unit).
ABS Actuator and Electric Unit (Control Unit) Circuit InspectionEKS00LUF
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of ABS actuator and electric unit (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 ABS actuator and electric unit (control unit) connector.
2. Check resistance between ABS actuator and electric unit (con-
trol unit) harness connector E69 terminals 20 (W) and 23 (R).
OK or NG
OK >> Replace ABS actuator and electric unit (control unit).
NG >> Repair harness between ABS actuator and electric unit
(control unit) and harness connector E116.
4WD Control Unit Circuit InspectionEKS00LUG
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check 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.94 (G/R) - 86 (GY/R) : Approx. 108 - 132 Ω
PKIA9592E
20 (W) - 23 (R) : Approx. 54 - 66 Ω
SKIA9769E

LAN-40
[CAN]
CAN SYSTEM (TYPE 2)

2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect 4WD control unit connector.
2. Check resistance between 4WD control unit harness connector
M107 terminals 8 (W) and 16 (R).
OK or NG
OK >> Replace 4WD control unit.
NG >> Repair harness between 4WD control unit and combina-
tion meter.
Combination Meter Circuit InspectionEKS00LUH
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of combination meter for damage, bend and loose connection (meter side
and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect combination meter connector.
2. Check resistance between combination meter harness connec-
tor M44 terminals 22 (W) and 23 (R).
OK or NG
OK >> Replace combination meter.
NG >> Repair harness between combination meter and 4WD
control unit.
CAN Communication Circuit InspectionEKS00LUI
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check following terminals and connectors for damage, bend and loose connection (control module side,
control unit side, meter side, connector side and harness side).
–ECM
–ABS actuator and electric unit (control unit)
–4WD control unit
–Combination meter
–Between ECM and combination meter
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.8 (W) - 16 (R) : Approx. 54 - 66 Ω
SKIB0043E
22 (W) - 23 (R) : Approx. 108 - 132 Ω
SKIA9780E

CAN SYSTEM (TYPE 2)
LAN-41
[CAN]
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2. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect ECM connector and harness connector M75.
2. Check continuity between ECM harness connector M118 termi-
nals 94 (G/R) and 86 (GY/R).
OK or NG
OK >> GO TO 3.
NG >> Repair harness between ECM and harness connector
M75.
3. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between ECM harness connector M118 terminals
94 (G/R), 86 (GY/R) and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness between ECM and harness connector
M75.
4. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Check continuity between ABS actuator and electric unit (control
unit) harness connector E69 terminals 20 (W) and 23 (R).
OK or NG
OK >> GO TO 5.
NG >> Repair harness between ABS actuator and electric unit
(control unit) and harness connector E116.
5. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between ABS actuator and electric unit (control
unit) harness connector E69 terminals 20 (W), 23 (R) and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair harness between ABS actuator and electric unit
(control unit) and harness connector E116. 94 (G/R) - 86 (GY/R) : Continuity should not exist.
PKIA9592E
94 (G/R) - Ground : Continuity should not exist.
86 (GY/R) - Ground : Continuity should not exist.
PKIA9593E
20 (W) - 23 (R) : Continuity should not exist.
SKIA9769E
20 (W) - Ground : Continuity should not exist.
23 (R) - Ground : Continuity should not exist.
SKIA9778E

LAN-42
[CAN]
CAN SYSTEM (TYPE 2)

6. 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 7.
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
7. 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 8.
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
8. CHECK ECM AND COMBINATION METER INTERNAL CIRCUIT
Check components inspection. Refer to LAN-42, "
CHECK ECM AND COMBINATION METER INTERNAL
CIRCUIT" .
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to LAN-30, "Work Flow" .
NG >> Replace ECM and/or combination meter.
Component InspectionEKS00LUJ
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

CAN SYSTEM (TYPE 3)
LAN-43
[CAN]
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CAN SYSTEM (TYPE 3)PFP:23710
System DescriptionEKS00LUK
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 LocationEKS00LUL
SKIB0084E

LAN-44
[CAN]
CAN SYSTEM (TYPE 3)

Wiring Diagram — CAN —EKS00LUM
TKWB1672E

CAN SYSTEM (TYPE 3)
LAN-45
[CAN]
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TKWB1673E

LAN-46
[CAN]
CAN SYSTEM (TYPE 3)

Work FlowEKS00LUN
1. Print all the data of “SELF-DIAG RESULTS” for “ENGINE”, “A/T”, “ABS” and “ALL MODE AWD/4WD” dis-
played on CONSULT-II.
2. Print all the data of “CAN DIAG SUPPORT MNTR” for “ENGINE”, “A/T”, “ABS” and “ALL MODE AWD/
4WD” displayed on CONSULT-II.
3. Attach the printed sheet of “SELF-DIAG RESULTS” and “CAN DIAG SUPPORT MNTR” onto the check
sheet. Refer to LAN-47, "
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-47, "
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-48, "
CHECK SHEET
RESULTS (EXAMPLE)" .
PKIA8260E
PKIA8343E