NISSAN X-TRAIL 2003 Service Repair Manual

CAN SYSTEM (TYPE 2)
LAN-43
[CAN]
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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

CAN SYSTEM (TYPE 2)
LAN-45
[CAN]
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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
M61. 94 (G/R) – Ground : Continuity should not exist.
86 (GY/R) – Ground : Continuity should not exist.
PKIA9593E

LAN-46
[CAN]
CAN SYSTEM (TYPE 2)

4. CHECK HARNESS FOR OPEN CIRCUIT
LHD models
1. Disconnect TCM connector.
2. Check continuity between TCM harness connector F46 termi-
nals 5 (G/R) and 6 (GY/R).
3. Disconnect harness connector M75.
4. Check continuity between harness connector M61 terminals 21
(L/R) and 8 (B/W).
RHD models
1. Disconnect TCM connector and harness connector F36.
2. Check continuity between TCM harness connector F46 termi-
nals 5 (G/R) and 6 (GY/R).
OK or NG
OK >> GO TO 5.
NG >>

LHD models
Check the following harness. If any harness is dam-
aged, repair the harness.
–Harness between TCM and harness connector F41
–Harness between harness connector M61 and har-
ness connector M75

RHD models
–Repair harness between TCM and harness connector F36. 5 (G/R) – 6 (GY/R) : Continuity should not exist.
SKIB0094E
21 (L/R) – 8 (B/W) : Continuity should not exist.
SKIB0096E
5 (G/R) – 6 (GY/R) : Continuity should not exist.
SKIB0094E

CAN SYSTEM (TYPE 2)
LAN-47
[CAN]
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5. CHECK HARNESS FOR OPEN CIRCUIT
LHD models
1. Check continuity between TCM harness connector F46 termi-
nals 5 (G/R), 6 (GY/R) and ground.
2. Check continuity between harness connector M61 terminals 21
(L/R), 8 (B/W) and ground.
RHD models

Check continuity between TCM harness connector F46 termi-
nals 5 (G/R), 6 (GY/R) and ground.
OK or NG
OK >> GO TO 6.
NG >>

LHD models
Check the following harness. If any harness is dam-
aged, repair the harness.
–Harness between TCM and harness connector F41
–Harness between harness connector M61 and Harness connector M75

RHD models
–Repair harness between TCM and harness connector F36. 5 (G/R) – Ground : Continuity should not exist.
6 (GY/R) – Ground : Continuity should not exist.
SKIB0099E
21 (L/R) – Ground : Continuity should not exist.
8 (B/W) – Ground : Continuity should not exist.
SKIB0100E
5 (G/R) – Ground : Continuity should not exist.
6 (GY/R) – Ground : Continuity should not exist.
SKIB0099E

LAN-48
[CAN]
CAN SYSTEM (TYPE 2)

6. CHECK HARNESS FOR SHORT CIRCUIT
LHD models
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).
RHD models
1. Disconnect ABS actuator and electric unit (control unit) connector and harness connector E116.
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 7.
NG >> Repair harness between ABS actuator and electric unit
(control unit) and harness connector E116.
7. 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 8.
NG >> Repair harness between ABS actuator and electric unit
(control unit) and harness connector E116. 20 (W) – 23 (R) : Continuity should not exist.
SKIA9769E
20 (W) – 23 (R) : Continuity should not exist.
SKIA9769E
20 (W) – Ground : Continuity should not exist.
23 (R) – Ground : Continuity should not exist.
SKIA9778E

CAN SYSTEM (TYPE 2)
LAN-49
[CAN]
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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 NO
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-49, "
CHECK ECM AND COMBINATION METER INTERNAL
CIRCUIT" .
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to LAN-28, "Work Flow" .
NG >> Replace ECM and/or combination meter.
Component InspectionEKS00FIB
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-50
[CAN]
CAN SYSTEM (TYPE 3)

CAN SYSTEM (TYPE 3)PFP:23710
System DescriptionEKS00FV3
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 LocationEKS00FV4
SKIB0125E

CAN SYSTEM (TYPE 3)
LAN-51
[CAN]
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Wiring Diagram — CAN —EKS00FV5
TKWB0110E

LAN-52
[CAN]
CAN SYSTEM (TYPE 3)

T K W B 0 111 E