2003 NISSAN X-TRAIL 4WD

LAN-24
[CAN]
CAN SYSTEM (TYPE 1)

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 NO
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-24, "
CHECK ECM AND COMBINATION METER INTERNAL
CIRCUIT" .
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to LAN-12, "Work Flow" .
NG >> Replace ECM and/or combination meter.
Component InspectionEKS00F0O
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-28
[CAN]
CAN SYSTEM (TYPE 2)

Work FlowEKS00FIC
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-29, "
CHECK SHEET" .
4. Based on the “CAN DIAG SUPPORT MNTR” results, put marks “v” onto the items with “NG” or “UNKWN”
in the check sheet table. Refer to LAN-29, "
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-30, "
CHECK SHEET
RESULTS (EXAMPLE)" .
PKIA8260E
PKIA8343E

CAN SYSTEM (TYPE 2)
LAN-31
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN

Case 2
Check harness between ABS actuator and electric unit (control unit) and 4WD control unit. Refer to LAN-39,
"Between ABS Actuator and Electric Unit (Control Unit) and 4WD Control Unit Circuit Inspection" .
PKIA9607E
PKIA6496E

CAN SYSTEM (TYPE 2)
LAN-35
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN

Case 6
Check 4WD control unit circuit. Refer to LAN-43, "4WD Control Unit Circuit Inspection" .
PKIA9611E
PKIA6500E

CAN SYSTEM (TYPE 2)
LAN-39
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN

3. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Check the following.
–LHD models
 Check continuity between harness connector E116 terminals 13
(W), 4 (R) and ABS actuator and electric unit (control unit) har-
ness connector E69 terminals 20 (W), 23 (R).
–RHD models
 Check continuity between harness connector E60 terminals 4
(W), 5 (R) and ABS actuator and electric unit (control unit) har-
ness connector E69 terminals 20 (W), 23 (R).
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to
LAN-28, "
Work Flow" .
NG >> Repair harness.
Between ABS Actuator and Electric Unit (Control Unit) and 4WD Control Unit
Circuit Inspection
EKS00FI4
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect battery cable at 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.13 (W) – 20 (W) : Continuity should exist.
4 (R) – 23 (R) : Continuity should exist.
SKIB0088E
4 (W) – 20 (W) : Continuity should exist.
5 (R) – 23 (R) : Continuity should exist.
SKIB0089E

CAN SYSTEM (TYPE 2)
LAN-41
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN

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-28, "
Work Flow" .
NG >> Repair harness.
ECM Circuit InspectionEKS00FI5
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect battery cable at negative terminal.
3. Check following terminals and connectors for damage, bend and loose connection (control module side
and harness side).
–ECM connector
–Harness connector M61
–Harness connector F41
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-43
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN

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 InspectionEKS00FI8
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect battery cable at 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.
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 InspectionEKS00FI9
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect battery cable at 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.20 (W) – 23 (R) : Approx. 54 – 66Ω
SKIA9769E
8 (W) – 16 (R) : Approx. 54 – 66Ω
SKIB0043E

LAN-44
[CAN]
CAN SYSTEM (TYPE 2)

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 InspectionEKS00FIA
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect battery cable at 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
–TCM
–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.
2. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect ECM connector and harness connector M61.
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
M61. 22 (W) – 23 (R) : Approx. 108 – 132Ω
SKIA9780E
94 (G/R) – 86 (GY/R) : Continuity should not exist.
PKIA9592E