NISSAN X-TRAIL 2005 Service Repair Manual

CAN SYSTEM (TYPE 8)
LAN-147
[CAN]
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CHECK SHEET
NOTE:
If a check mark is put on “NG” on “INITIAL DIAG (Initial diagnosis)”, replace the control unit.
PKIC0307E

LAN-148
[CAN]
CAN SYSTEM (TYPE 8)

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 ECM circuit. Refer to LAN-151, "ECM Circuit Inspection" .
PKIC0311E
PKIA7561E

CAN SYSTEM (TYPE 8)
LAN-149
[CAN]
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Case 2
Check ABS actuator and electric unit (control unit) circuit. Refer to LAN-151, "ABS Actuator and Electric Unit
(Control Unit) Circuit Inspection" .
PKIC0345E
PKIA7562E

LAN-150
[CAN]
CAN SYSTEM (TYPE 8)

Case 3
Check combination meter circuit. Refer to LAN-152, "Combination Meter Circuit Inspection" .
Case 4
Check CAN communication circuit. Refer to LAN-153, "CAN Communication Circuit Inspection" .
PKIC0314E
PKIA7563E
PKIC0344E

CAN SYSTEM (TYPE 8)
LAN-151
[CAN]
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ECM Circuit InspectionEKS00NLK
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).
–LHD models
 ECM connector
 Harness connector M75
 Harness connector E116
–RHD models
 ECM connector
 Harness connector M94
 Harness connector E125
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ECM connector.
2. Check resistance between ECM harness connector M118 termi-
nals 95 (G/R) and 87 (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 InspectionEKS00NLL
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.95 (G/R) - 87 (GY/R) : Approx. 108 - 132 Ω
SKIB0120E

LAN-152
[CAN]
CAN SYSTEM (TYPE 8)

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 >>

LHD models
–Repair harness between ABS actuator and electric
unit (control unit) and harness connector E116.

RHD models
–Repair harness between ABS actuator and electric
unit (control unit) and harness connector E125.
Combination Meter Circuit InspectionEKS00NLM
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 (meter side and har-
ness side).
–LHD models
 Combination meter connector
 Harness connector M75
 Harness connector E116
–RHD models
 Combination meter connector
 Harness connector M94
 Harness connector E125
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 ABS
actuator and electric unit (control unit). 20 (W) - 23 (R) : Approx. 54 - 66 Ω
SKIA9769E
22 (W) - 23 (R) : Approx. 108 - 132 Ω
SKIA9780E

CAN SYSTEM (TYPE 8)
LAN-153
[CAN]
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CAN Communication Circuit InspectionEKS00NLN
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)
–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
LHD models
1. Disconnect ECM connector and harness connector M75.
2. Check continuity between ECM harness connector M118 termi-
nals 95 (G/R) and 87 (GY/R).
RHD models
1. Disconnect ECM connector and harness connector M94.
2. Check continuity between ECM harness connector M118 termi-
nals 95 (G/R) and 87 (GY/R).
OK or NG
OK >> GO TO 3.
NG >>

LHD models
–Repair harness between ECM and harness connector
M75.

RHD models
–Repair harness between ECM and harness connector
M94. 95 (G/R) - 87 (GY/R) : Continuity should not exist.
SKIB0120E
95 (G/R) - 87 (GY/R) : Continuity should not exist.
SKIB0120E

LAN-154
[CAN]
CAN SYSTEM (TYPE 8)

3. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between ECM harness connector M118 terminals
95 (G/R), 87 (GY/R) and ground.
OK or NG
OK >> GO TO 4.
NG >>

LHD models
–Repair harness between ECM and harness connector
M75.

RHD models
–Repair harness between ECM and harness connector M94.
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 >>

LHD models
–Repair harness between ABS actuator and electric
unit (control unit) and harness connector E116.

RHD models
–Repair harness between ABS actuator and electric
unit (control unit) and harness connector E125.
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 >>

LHD models
–Repair harness between ABS actuator and electric
unit (control unit) and harness connector E116.

RHD models
–Repair harness between ABS actuator and electric unit (control unit) and harness connector
E125. 95 (G/R) - Ground : Continuity should not exist.
87 (GY/R) - Ground : Continuity should not exist.
SKIB0121E
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 8)
LAN-155
[CAN]
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6. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect 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 >>

LHD models
–Repair harness between combination meter and har-
ness connector M75.

RHD models
–Repair harness between combination meter and har-
ness connector M94.
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 >>

LHD models
–Repair harness between combination meter and har-
ness connector M75.

RHD models
–Repair harness between combination meter and harness connector M94.
8. CHECK ECM AND COMBINATION METER INTERNAL CIRCUIT
Check components inspection. Refer to LAN-155, "
CHECK ECM AND COMBINATION METER INTERNAL
CIRCUIT" .
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to LAN-146, "Work Flow" .
NG >> Replace ECM and/or combination meter.
Component InspectionEKS00NI1
CHECK ECM AND COMBINATION METER INTERNAL CIRCUIT

Remove ECM and combination meter from vehicle.

Check resistance between ECM terminals 95 and 87.

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 95 - 87
108 - 132
Combination meter 22 - 23
PKIA0830E

LAN-156
[CAN]
CAN SYSTEM (TYPE 9)

CAN SYSTEM (TYPE 9)PFP:23710
System DescriptionEKS00NL8
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 LocationEKS00NL9
PKIC0346E