Nissan Pathfinder (2007 year). Instruction — part 293
TROUBLE DIAGNOSIS
LAN-75
[CAN]
C
D
E
F
G
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L
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A
B
LAN
2007 Pathfinder
Malfunction Area Chart
UKS006I1
MAIN LINE
BRANCH LINE
SHORT CIRCUIT
Malfunction Area
Reference
Main line between TCM and data link connector
LAN-76, "Main Line Between TCM and Data Link Connector"
Main line between data link connector and ABS actuator and
electric unit (control unit)
LAN-77, "Main Line Between Data Link Connector and ABS
Actuator and Electric Unit"
Main line between data link connector and display control unit
LAN-78, "Main Line Between Data Link Connector and Display
Control Unit"
Main line between display control unit and ABS actuator and
electric unit (control unit)
LAN-79, "Main Line Between Display Control unit and ABS
Actuator and Electric Unit"
Malfunction Area
Reference
ECM branch line circuit
LAN-80, "ECM Branch Line Circuit"
TCM branch line circuit
LAN-80, "TCM Branch Line Circuit"
Transfer control unit branch line circuit
LAN-81, "Transfer Control Unit Branch Line Circuit"
Driver seat control branch line circuit
LAN-82, "Driver Seat Control Unit Branch Line Circuit"
BCM branch line circuit
LAN-83, "BCM Branch Line Circuit"
Data link connector branch line circuit
LAN-83, "Data Link Connector Branch Line Circuit"
Front air control branch line circuit
LAN-84, "Front Air Control Branch Line Circuit"
Combination meter branch line circuit
LAN-85, "Combination Meter Branch Line Circuit"
Steering angle sensor branch line circuit
LAN-85, "Steering Angle Sensor Branch Line Circuit"
Display control unit branch line circuit
LAN-86, "Display Control Unit Branch Line Circuit"
ABS actuator and electric unit (control unit) branch line circuit
LAN-87, "ABS Actuator and Electric Unit (Control Unit) Branch
Line Circuit"
IPDM E/R branch line circuit
LAN-87, "IPDM E/R Branch Line Circuit"
Malfunction Area
Reference
CAN communication circuit
LAN-76
[CAN]
TROUBLE DIAGNOSIS
2007 Pathfinder
Main Line Between TCM and Data Link Connector
UKS006I2
INSPECTION PROCEDURE
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
–
Harness connector F14
–
Harness connector E5
–
Harness connector E152
–
Harness connector M31
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the following harness connectors.
–
A/T assembly connector
–
Harness connector F14 and E5
2.
Check the continuity between the A/T assembly harness connector and the harness connector.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the main line between the A/T assembly and the harness connector F14.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the harness connectors E152 and M31.
2.
Check the continuity between harness connectors.
OK or NG
OK
>> GO TO 4.
NG
>> Repair the main line between the harness connector E5 and the harness connector E152.
A/T assembly harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
F9
3
F14
2
Yes
8
3
Yes
Harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
E5
2
E152
52G
Yes
3
51G
Yes
TROUBLE DIAGNOSIS
LAN-77
[CAN]
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LAN
2007 Pathfinder
4.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
Check the continuity between the harness connector and the data link connector.
OK or NG
OK
>>
●
Present error: Check the following items again.
–
Decision of CAN system type.
–
Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–
Not copied from on-board diagnosis.
–
Procedure for detecting root cause.
●
Past error: Error was detected in the main line between the A/T assembly and the data link con-
nector.
NG
>> Repair the main line between the harness connector M31 and the data link connector.
Main Line Between Data Link Connector and ABS Actuator and Electric Unit
UKS006I3
INSPECTION PROCEDURE
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
–
Harness connector M91
–
Harness connector E26
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the harness connectors M91 and E26.
2.
Check the continuity between the data link connector and the harness connector.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the main line between the data link connector and the harness connector M91.
Harness connector
Data link connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M31
52G
M22
6
Yes
51G
14
Yes
Data link connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M22
6
M91
11
Yes
14
10
Yes
LAN-78
[CAN]
TROUBLE DIAGNOSIS
2007 Pathfinder
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the connector of ABS actuator and electric unit (control unit).
2.
Check the continuity between the harness connector and the ABS actuator and electric unit (control unit)
harness connector.
OK or NG
OK
>>
●
Present error: Check the following items again.
–
Decision of CAN system type.
–
Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–
Not copied from on-board diagnosis.
–
Procedure for detecting root cause.
●
Past error: Error was detected in the main line between the data link connector and the ABS
actuator and electric unit (control unit).
NG
>> Repair the main line between the harness connector E26 and the ABS actuator and electric unit
(control unit).
Main Line Between Data Link Connector and Display Control Unit
UKS006IJ
INSPECTION PROCEDURE
1.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Disconnect ECM connector and display control unit connector.
4.
Check the continuity between the data link connector and the display control unit harness connector.
OK or NG
OK
>>
●
Present error: Check the following items again.
–
Decision of CAN system type.
–
Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–
Not copied from on-board diagnosis.
–
Procedure for detecting root cause.
●
Past error: Error was detected in the main line between the data link connector and the display
control unit.
NG
>> Repair the main line between the data link connector and the display control unit.
Harness connector
ABS actuator and electric unit (control unit)
harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
E26
11
E125
11
Yes
10
15
Yes
Data link connector
Display control unit harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M22
6
M95
25
Yes
14
26
Yes
TROUBLE DIAGNOSIS
LAN-79
[CAN]
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A
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LAN
2007 Pathfinder
Main Line Between Display Control unit and ABS Actuator and Electric Unit
UKS006IK
INSPECTION PROCEDURE
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
–
Harness connector M91
–
Harness connector E26
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the following harness connectors.
–
Display control unit connector
–
Harness connector M91 and E26
2.
Check the continuity between the display control unit harness connector and the harness connector.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the main line between the display control unit and the harness connector M91.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the connector of ABS actuator and electric unit (control unit).
2.
Check the continuity between the harness connector and the ABS actuator and electric unit (control unit)
harness connector.
OK or NG
OK
>>
●
Present error: Check the following items again.
–
Decision of CAN system type.
–
Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–
Not copied from on-board diagnosis.
–
Procedure for detecting root cause.
●
Past error: Error was detected in the main line between the display control unit and the ABS
actuator and electric unit (control unit).
NG
>> Repair the main line between the harness connector E26 and the ABS actuator and electric unit
(control unit).
Display control unit harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M95
25
M91
11
Yes
26
10
Yes
Harness connector
ABS actuator and electric unit (control unit)
harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
E26
11
E125
11
Yes
10
15
Yes
LAN-80
[CAN]
TROUBLE DIAGNOSIS
2007 Pathfinder
ECM Branch Line Circuit
UKS006I4
INSPECTION PROCEDURE
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
–
ECM connector
–
Harness connector E2
–
Harness connector F32
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of ECM.
2.
Check the resistance between the ECM harness connector terminals.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the ECM branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ECM. Refer to
OK or NG
OK
>>
●
Present error: Replace the ECM. Refer to
EC-76, "Procedure After Replacing ECM"
●
Past error: Error was detected in the ECM branch line.
NG
>> Repair the power supply and the ground circuit.
TCM Branch Line Circuit
UKS006I5
INSPECTION PROCEDURE
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the A/T assembly for damage, bend and loose connection (unit
side and connector side).
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
ECM harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
E16
94
86
Approx. 108 – 132
TROUBLE DIAGNOSIS
LAN-81
[CAN]
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F
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M
A
B
LAN
2007 Pathfinder
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of A/T assembly.
2.
Check the resistance between the A/T assembly harness connector terminals.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the TCM branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the TCM. Refer to
AT-167, "MAIN POWER SUPPLY AND
OK or NG
OK
>>
●
Present error: Replace the control valve with the TCM. Refer to
WITH TCM REMOVAL AND INSTALLATION"
●
Past error: Error was detected in the TCM branch line.
NG
>> Repair the power supply and the ground circuit.
Transfer Control Unit Branch Line Circuit
UKS006I6
INSPECTION PROCEDURE
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the transfer control unit for damage, bend and loose connection
(unit side and connector side).
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of transfer control unit.
2.
Check the resistance between the transfer control unit harness connector terminals.
–
Part time 4WD models
–
All-mode 4WD models
OK or NG
OK
>> GO TO 3.
NG
>> Repair the transfer control unit branch line.
A/T assembly harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
F9
3
8
Approx. 54 – 66
Transfer control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M152
1
2
Approx. 54 – 66
Transfer control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M152
7
8
Approx. 54 – 66
LAN-82
[CAN]
TROUBLE DIAGNOSIS
2007 Pathfinder
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the transfer control unit. Refer to
cuit For Transfer Control Unit"
TF-56, "Power Supply Circuit For Transfer Control
(All-mode 4WD models).
OK or NG
OK
>>
●
Present error: Replace the transfer control unit. Refer to
(Part time 4WD models) or
TF-132, "TRANSFER CONTROL UNIT"
(All-mode 4WD
models).
●
Past error: Error was detected in the transfer control unit branch line.
NG
>> Repair the power supply and the ground circuit.
Driver Seat Control Unit Branch Line Circuit
UKS006IL
INSPECTION PROCEDURE
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
–
Driver seat control unit connector
–
Harness connector P1
–
Harness connector B37
–
Harness connector B69
–
Harness connector M40
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of driver seat control unit.
2.
Check the resistance between the driver seat control unit harness connector terminals.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the driver seat control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the driver seat control unit. Refer to
PLY AND GROUND CIRCUIT INSPECTION"
OK or NG
OK
>>
●
Present error: Replace the driver seat control unit. Refer to
SE-11, "Component Parts And Har-
●
Past error: Error was detected in the driver seat control unit branch line.
NG
>> Repair the power supply and the ground circuit.
Driver seat control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
P2
3
19
Approx. 54 – 66
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