Nissan Pathfinder (2010 year). Instruction — part 88
BCS
U1000 CAN COMM CIRCUIT
BCS-33
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000005255761
LAN-53, "CAN Communication Signal Chart"
DTC Logic
INFOID:0000000005255762
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000005255763
1.
PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result” of BCM.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to
LAN-14, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-37, "Intermittent Incident"
.
DTC
CONSULT-III display
description
DTC Detection Condition
Possible cause
U1000
CAN COMM CIRCUIT
When BCM cannot communicate CAN com-
munication signal continuously for 2 sec-
onds or more.
Any item (or items) of the following listed below is
malfunctioning in CAN communication system.
• Transmission
• Receiving (ECM)
• Receiving (METER/M&A)
• Receiving (TCM)
• Receiving (MULTI AV)
• Receiving (IPDM E/R)
• Receiving (I-KEY)
2010 Pathfinder
BCS-34
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000005255767
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not blown.
Is the fuse blown?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit.
NO
>> GO TO 2
2.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK GROUND CIRCUIT
Terminal No.
Signal name
Fuses and fusible link No.
57
Battery power supply
18 (10A)
70
G (50A)
11
Ignition ACC or ON
4 (10A)
38
Ignition ON or START
1 (10A)
Connector
Terminals
Power
source
Condition
Voltage (V) (Ap-
prox.)
(+)
(-)
M18
11
Ground
ACC
power
supply
Ignition
switch
ACC or
ON
Battery voltage
38
Ground
Ignition
power
supply
Ignition
switch ON
or START
Battery voltage
M20
57
Ground
Battery
power
supply
Ignition
switch
OFF
Battery voltage
70
Ground
Battery
power
supply
Ignition
switch
OFF
Battery voltage
LIIA2415E
2010 Pathfinder
BCS
POWER SUPPLY AND GROUND CIRCUIT
BCS-35
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair or replace harness.
BCM
Ground
Continuity
Connector
Terminal
M20
67
Yes
LIIA0915E
2010 Pathfinder
BCS-36
< COMPONENT DIAGNOSIS >
COMBINATION SWITCH INPUT CIRCUIT
COMBINATION SWITCH INPUT CIRCUIT
Diagnosis Procedure
INFOID:0000000005255768
Regarding Wiring Diagram information, refer to
.
1.
CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect BCM and combination switch.
3. Check continuity between BCM harness connector and combi-
nation switch harness connector.
Does continuity exist?
YES
>> GO TO 2
NO
>> Repair or replace harness.
2.
CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT
Check for continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Repair or replace harness.
NO
>> GO TO 3
3.
CHECK BCM OUTPUT VOLTAGE
1. Connect BCM.
2. Turn ignition switch ON.
3. Check voltage between BCM harness connector and ground.
System
BCM
Combination switch
Continuity
Connector
Terminal
Connector
Terminal
INPUT 1
M18
(A)
6
M28
(B)
6
Yes
INPUT 2
5
7
INPUT 3
4
10
INPUT 4
3
9
INPUT 5
2
8
ALMIA0275ZZ
System
BCM
Ground
Continuity
Connector
Terminal
INPUT 1
M18
6
No
INPUT 2
5
INPUT 3
4
INPUT 4
3
INPUT 5
2
ALMIA0276ZZ
ALMIA0277ZZ
2010 Pathfinder
BCS
COMBINATION SWITCH INPUT CIRCUIT
BCS-37
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
Is the measurement value normal?
YES
>> GO TO 4
NO
>> Replace BCM. Refer to
BCS-59, "Removal and Installation"
4.
CHECK COMBINATION SWITCH
Check combination switch. Refer to
Is the check result normal?
YES
>> Replace BCM. Refer to
BCS-59, "Removal and Installation"
NO
>> Replace the combination switch (applicable parts). Refer to
EXL-152, "Removal and Installation"
Special Repair Requirement
INFOID:0000000005255769
1.
ADDITIONAL SERVICE WHEN REPLACING BCM
>> Refer to
BCS-3, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair
System
Terminals
Voltage
(Approx.)
(+)
(
−
)
BCM
Ground
Connector
Terminal
INPUT 1
M18
6
Refer to
.
INPUT 2
5
INPUT 3
4
INPUT 4
3
INPUT 5
2
2010 Pathfinder
BCS-38
< COMPONENT DIAGNOSIS >
COMBINATION SWITCH OUTPUT CIRCUIT
COMBINATION SWITCH OUTPUT CIRCUIT
Diagnosis Procedure
INFOID:0000000005255770
Regarding Wiring Diagram information, refer to
.
1.
CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect BCM and combination switch.
3. Check continuity between BCM harness connector and combi-
nation switch harness connector.
Does continuity exist?
YES
>> GO TO 2
NO
>> Repair or replace harness.
2.
CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT
Check for continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Repair or replace harness.
NO
>> GO TO 3
3.
CHECK COMBINATION SWITCH
Check combination switch. Refer to
.
Is the check result normal?
YES
>> Replace BCM. Refer to
BCS-59, "Removal and Installation"
NO
>> Replace combination switch (applicable parts). Refer to
EXL-152, "Removal and Installation"
Special Repair Requirement
INFOID:0000000005255771
1.
ADDITIONAL SERVICE WHEN REPLACING BCM
>> Refer to
BCS-3, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair
System
BCM
Combination switch
Continuity
Connector
Terminal
Connector
Terminal
OUTPUT 1
M18
(A)
36
M28
(B)
1
Yes
OUTPUT 2
35
2
OUTPUT 3
34
3
OUTPUT 4
33
4
OUTPUT 5
32
5
ALMIA0278ZZ
System
BCM
Ground
Continuity
Connector
Terminal
OUTPUT 1
M18
36
No
OUTPUT 2
35
OUTPUT 3
34
OUTPUT 4
33
OUTPUT 5
32
ALMIA0279ZZ
2010 Pathfinder
BCS
COMBINATION SWITCH
BCS-39
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
COMBINATION SWITCH
Description
INFOID:0000000005255772
COMBINATION SWITCH MATRIX
Combination switch consists of INPUT circuit and OUTPUT circuit.
Combination switch circuit
Combination switch INPUT-OUTPUT system list
NOTE:
Headlamp has a dual system switch.
Diagnosis Procedure
INFOID:0000000005255773
1.
CHECK LIGHT & TURN SIGNAL SWITCH
Check operation with normal light & turn signal switch installed.
Does it operate normally?
YES
>> Replace light & turn signal switch. Refer to
EXL-152, "Removal and Installation"
.
NO
>> GO TO 2
2.
CHECK WIPER & WASHER SWITCH
Check operation with normal wiper & washer switch installed.
Does it operate normally?
YES
>> Replace wiper & washer switch. Refer to
WW-78, "Removal and Installation"
.
System
OUTPUT 1
OUTPUT 2
OUTPUT 3
OUTPUT 4
OUTPUT 5
INPUT 1
—
FR WASHER
FR WIPER LOW
TURN LH
TURN RH
INPUT 2
FR WIPER HI
—
FR WIPER INT
PASSING
HEADLAMP 1
INPUT 3
INT VOLUME 1
RR WASHER
—
HEADLAMP 2
HI BEAM
INPUT 4
RR WIPER INT
INT VOLUME 3
AUTO LIGHT
—
TAIL LAMP
INPUT 5
INT VOLUME 2
RR WIPER
—
FR FOG
—
LIIA0760E
2010 Pathfinder
BCS-40
< COMPONENT DIAGNOSIS >
COMBINATION SWITCH
NO
>> GO TO 3
3.
CHECK SWITCH BASE (SPIRAL CABLE)
Check operation with normal switch base (spiral cable) installed.
Does it operate normally?
YES
>> Replace switch base (spiral cable). Refer to
SR-7, "Removal and Installation"
NO
>> Combination switch is normal.
2010 Pathfinder
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