NISSAN X-TRAIL 2005 Service Repair Manual

CAN SYSTEM (TYPE 4)
LAN-77
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN

Case 5
Check 4WD control unit circuit. Refer to LAN-82, "4WD Control Unit Circuit Inspection" .
PKIB9069E
PKIA9640E

LAN-78
[CAN]
CAN SYSTEM (TYPE 4)

Case 6
Check combination meter circuit. Refer to LAN-82, "Combination Meter Circuit Inspection" .
Case 7
Check CAN communication circuit. Refer to LAN-83, "CAN Communication Circuit Inspection" .
PKIB9070E
PKIA9641E
PKIB9071E

CAN SYSTEM (TYPE 4)
LAN-79
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN

Inspection Between ESP/TCS/ABS Control Unit and 4WD Control Unit CircuitEKS00LV1
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 ESP/TCS/ABS control unit connector and harness connector E116.
2. Check the following.
–LHD models
 Check continuity between ESP/TCS/ABS control unit harness
connector E122 terminals 61 (W), 63 (R) and harness connector
E116 terminals 14 (W), 5 (R).
–RHD models
 Check continuity between ESP/TCS/ABS control unit harness
connector E122 terminals 61 (W), 63 (R) and harness connector
E116 terminals 9 (W), 2 (R).
OK or NG
OK >> GO TO 3.
NG >> Repair harness.61 (W) - 14 (W) : Continuity should exist.
63 (R) - 5 (R) : Continuity should exist.
SKIB0109E
61 (W) - 9 (W) : Continuity should exist.
63 (R) - 2 (R) : Continuity should exist.
SKIB0110E

LAN-80
[CAN]
CAN SYSTEM (TYPE 4)

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-71, "
Work Flow" .
NG >> Repair harness.
ECM Circuit InspectionEKS00LV2
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 4)
LAN-81
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN

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 ESP/TCS/ABS con-
trol unit.
ESP/TCS/ABS Control Unit Circuit InspectionEKS00LV3
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the 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.
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 InspectionEKS00LV4
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the 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.95 (G/R) - 87 (GY/R) : Approx. 108 - 132 Ω
SKIB0120E
61 (W) - 63 (R) : Approx. 54 - 66 Ω
PKIA9632E

LAN-82
[CAN]
CAN SYSTEM (TYPE 4)

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 InspectionEKS00LV5
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.
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 InspectionEKS00LV6
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.4 (W) - 5 (R) : Approx. 54 - 66 Ω
SKIA6870E
8 (W) - 16 (R) : Approx. 54 - 66 Ω
SKIB0043E

CAN SYSTEM (TYPE 4)
LAN-83
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN

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 InspectionEKS00LV7
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, sensor side, meter side, connector side and harness side).
–ECM
–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 M75.
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 >> Repair harness between ECM and harness connector
M75. 22 (W) - 23 (R) : Approx. 108 - 132 Ω
SKIA9780E
95 (G/R) - 87 (GY/R) : Continuity should not exist.
SKIB0120E

LAN-84
[CAN]
CAN SYSTEM (TYPE 4)

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 >> Repair harness between ECM and harness connector
M75.
4. CHECK HARNESS FOR SHORT CIRCUIT
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).
OK or NG
OK >> GO TO 5.
NG >> Repair harness between ESP/TCS/ABS control unit and
harness connector E116.
5. 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 6.
NG >> Repair harness between ESP/TCS/ABS control unit and
harness connector E116. 95 (G/R) - Ground : Continuity should not exist.
87 (GY/R) - Ground : Continuity should not exist.
SKIB0121E
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 4)
LAN-85
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN

6. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect following connectors.
–Steering angle sensor connector
–4WD control unit connector
–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 steering
angle sensor

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 steering angle sensor

Harness between combination meter and harness connector M75
8. CHECK ECM AND COMBINATION METER INTERNAL CIRCUIT
Check components inspection. Refer to LAN-85, "
CHECK ECM AND COMBINATION METER INTERNAL
CIRCUIT" .
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to LAN-71, "Work Flow" .
NG >> Replace ECM and/or combination meter.
Component InspectionEKS00LV8
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-86
[CAN]
CAN SYSTEM (TYPE 5)

CAN SYSTEM (TYPE 5)PFP:23710
System DescriptionEKS00LV9
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 LocationEKS00LVA
SKIB0125E