NISSAN X-TRAIL 2003 Service Repair Manual

CAN SYSTEM (TYPE 5)
LAN-103
[CAN]
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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-89, "
Work Flow" .
NG >> Repair harness.
ECM Circuit InspectionEKS00FWM
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

LAN-104
[CAN]
CAN SYSTEM (TYPE 5)

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 TCM.
TCM Circuit InspectionEKS00FWN
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect battery cable at negative terminal.
3. Check terminals and connector of TCM 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 TCM connector.
2. Check resistance between TCM harness connector F46 termi-
nals 5 (G/R) and 6 (GY/R).
OK or NG
OK >> Replace TCM.
NG >>

LHD models
–Repair harness between TCM and harness connector
F41.

RHD models
–Repair harness between TCM and harness connector
F36.
ESP/TCS/ABS Control Unit Circuit InspectionEKS00FWO
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect battery cable at negative terminal.
3. Check terminals and connector of ESP/TCS/ABS 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 – 132Ω
PKIA9592E
5 (G/R) – 6 (GY/R) : Approx. 54 – 66Ω
SKIB0094E

CAN SYSTEM (TYPE 5)
LAN-105
[CAN]
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2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ESP/TCS/ABS control unit connector.
2. Check resistance between ESP/TCS/ABS control unit harness
connector E122 terminals 61 (W) and 63 (R).
OK or NG
OK >> Replace ESP/TCS/ABS control unit.
NG >> Repair harness between ESP/TCS/ABS control unit and
harness connector E116.
Steering Angle Sensor Circuit InspectionEKS00FWT
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect battery cable at negative terminal.
3. Check terminals and connector of steering angle sensor for damage, bend and loose connection (sensor
side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect steering angle sensor connector.
2. Check resistance between steering angle sensor harness con-
nector M81 terminals 4 (W) and 5 (R).
OK or NG
OK >> Replace steering angle sensor.
NG >> Repair harness between steering angle sensor and
4WD control unit.
4WD Control Unit Circuit InspectionEKS00FWP
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.61 (W) – 63 (R) : Approx. 54 – 66Ω
PKIA9632E
4 (W) – 5 (R) : Approx. 54 – 66Ω
SKIA6870E

LAN-106
[CAN]
CAN SYSTEM (TYPE 5)

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 steering
angle sensor.
Combination Meter Circuit InspectionEKS00FWQ
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.
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. 8 (W) – 16 (R) : Approx. 54 – 66Ω
SKIB0043E
22 (W) – 23 (R) : Approx. 108 – 132Ω
SKIA9780E

CAN SYSTEM (TYPE 5)
LAN-107
[CAN]
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CAN Communication Circuit InspectionEKS00FWR
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, sensor side, meter side, connector side and harness side).
–ECM
–TCM
–ESP/TCS/ABS control unit
–Steering angle sensor
–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.
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) – 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

LAN-108
[CAN]
CAN SYSTEM (TYPE 5)

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 5)
LAN-109
[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-110
[CAN]
CAN SYSTEM (TYPE 5)

6. CHECK HARNESS FOR SHORT CIRCUIT
LHD models
1. Disconnect ESP/TCS/ABS control unit connector.
2. Check continuity between ESP/TCS/ABS control unit harness
connector E122 terminals 61 (W) and 63 (R).
RHD models
1. Disconnect ESP/TCS/ABS control unit connector and harness connector E116.
2. Check continuity between ESP/TCS/ABS control unit harness
connector E122 terminals 61 (W) and 63 (R).
OK or NG
OK >> GO TO 7.
NG >> Repair harness between ESP/TCS/ABS control unit and
harness connector E116.
7. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between ESP/TCS/ABS control unit harness con-
nector E122 terminals 61 (W), 63 (R) and ground.
OK or NG
OK >> GO TO 8.
NG >> Repair harness between ESP/TCS/ABS control unit and
harness connector E116. 61 (W) – 63 (R) : Continuity should not exist.
PKIA9632E
61 (W) – 63 (R) : Continuity should not exist.
PKIA9632E
61 (W) – Ground : Continuity should not exist.
63 (R) – Ground : Continuity should not exist.
PKIA9633E

CAN SYSTEM (TYPE 5)
LAN-111
[CAN]
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8. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect steering angle sensor, 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 steering
angle sensor

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 steering angle sensor

Harness between combination meter and harness connector M75
10. CHECK ECM AND COMBINATION METER INTERNAL CIRCUIT
Check components inspection. Refer to L A N - 111 , "
CHECK ECM AND COMBINATION METER INTERNAL
CIRCUIT" .
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to LAN-89, "Work Flow" .
NG >> Replace ECM and/or combination meter.
Component InspectionEKS00FWS
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-112
[CAN]
CAN SYSTEM (TYPE 5)