Nissan Pathfinder (2012 year). Manual — part 612
WCS
DIAGNOSIS AND REPAIR WORKFLOW
WCS-3
< BASIC INSPECTION >
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
INFOID:0000000007347515
DETAILED FLOW
1.
OBTAIN INFORMATION ABOUT SYMPTOM
Interview the customer to obtain as much information as possible about the conditions and environment under
which the malfunction occurred.
>> GO TO 2
2.
CHECK SYMPTOM
• Check the symptom based on the information obtained from the customer.
• Check to see if any other malfunctions are present.
>> GO TO 3
3.
CHECK CONSULT SELF-DIAGNOSIS RESULTS
Connect CONSULT and perform “SELF-DIAGNOSIS”. Refer to
MWI-27, "CONSULT Function (METER/
.
Are self-diagnosis results normal?
YES
>> GO TO 4
NO
>> Repair or replace the malfunctioning parts, GO TO 5
4.
NARROW DOWN MALFUNCTIONING PARTS THROUGH SYMPTOM DIAGNOSIS
Perform symptom diagnosis and repair or replace the identified malfunctioning parts.
>> GO TO 5
5.
FINAL CHECK
Check that the warning buzzer in the combination meter operates normally.
Does it operate normally?
YES
>> Inspection End.
NO
>> GO TO 1
August 2012
2012 Pathfinder
WCS-4
< SYSTEM DESCRIPTION >
WARNING CHIME SYSTEM
SYSTEM DESCRIPTION
WARNING CHIME SYSTEM
WARNING CHIME SYSTEM
WARNING CHIME SYSTEM : System Diagram
INFOID:0000000007347516
WARNING CHIME SYSTEM : System Description
INFOID:0000000007347517
COMBINATION METER
• The buzzer for warning chime system is installed in the combination meter.
• The buzzer sounds when the combination meter receives a buzzer output signal from each unit.
BCM
BCM receives signals from various units and transmits a buzzer output signal to the combination meter with
CAN communication line if it judges that the warning buzzer should be activated.
BCM warning function list
ABNIA2670GB
Warning functions
Signal name
Light reminder warning chime
• Lighting switch position signal
• Door switch signal
Seat belt warning chime
Seat belt buckle switch signal
Key warning chime
• Key switch signal
• Door switch signal
August 2012
2012 Pathfinder
WCS
WARNING CHIME SYSTEM
WCS-5
< SYSTEM DESCRIPTION >
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WARNING CHIME SYSTEM : Component Parts Location
INFOID:0000000007347518
WARNING CHIME SYSTEM : Component Description
INFOID:0000000007347519
LIGHT REMINDER WARNING CHIME
AWNIA0238ZZ
1.
Combination switch (lighting and turn
signal switch) M28
2.
Combination meter M24
3.
Key switch M27 (without Intelligent
Key)
4.
Key switch and ignition knob switch
M66 (with Intelligent Key)
5.
Front door switch LH B8
6.
Seat belt buckle switch LH B12
7.
BCM M18, M19, M20 (view with instru-
ment lower panel LH removed)
Unit
Description
Combination meter
• Receives the seat belt buckle switch signal from the seat belt buckle switch LH and transmits
it to BCM with CAN communication line.
• Receives a buzzer output signal from BCM with CAN communication line.
BCM
Transmits signals provided by various units to the combination meter with CAN communication
line.
Key switch and ignition knob
switch (with Intelligent Key)
Transmits key switch signal to BCM.
Key switch (without Intelligent
Key)
Transmits key switch signal to BCM.
Seat belt buckle switch LH
Transmits a seat belt buckle switch signal to the combination meter.
Combination switch
(lighting and turn signal switch)
Transmits the lighting switch position signal to BCM.
Front door switch LH
Transmits the door switch signal to BCM.
August 2012
2012 Pathfinder
WCS-6
< SYSTEM DESCRIPTION >
WARNING CHIME SYSTEM
LIGHT REMINDER WARNING CHIME : System Diagram
INFOID:0000000007347520
LIGHT REMINDER WARNING CHIME : System Description
INFOID:0000000007347521
DESCRIPTION
With ignition switch in OFF or ACC position, driver door open, and lighting switch in 1ST or 2ND position, the
light warning chime will sound.
• BCM detects ignition switch in OFF or ACC position, front door switch LH ON, and lighting switch in 1ST or
2ND position. And then transmits buzzer output signal (light reminder warning chime) to combination meter
with CAN communication line.
• When combination meter receives buzzer output signal (light reminder warning chime), it sounds the buzzer.
WARNING OPERATION CONDITIONS
If all of the following conditions are fulfilled
• Lighting switch is at 1st or 2nd position
• Ignition switch is at OFF or ACC
• Front door switch LH is ON
WARNING CANCEL CONDITIONS
Warning is canceled if any of the following conditions is fulfilled.
• Lighting switch OFF
• Ignition switch ON
• Front door switch LH is OFF
WKIA5465E
August 2012
2012 Pathfinder
WCS
WARNING CHIME SYSTEM
WCS-7
< SYSTEM DESCRIPTION >
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LIGHT REMINDER WARNING CHIME : Component Parts Location
INFOID:0000000007347522
LIGHT REMINDER WARNING CHIME : Component Description
INFOID:0000000007347523
SEAT BELT WARNING CHIME
SEAT BELT WARNING CHIME : System Diagram
INFOID:0000000007347524
AWNIA0238ZZ
1.
Combination switch (lighting and turn
signal switch) M28
2.
Combination meter M24
3.
Key switch M27 (without Intelligent
Key)
4.
Key switch and ignition knob switch
M66 (with Intelligent Key)
5.
Front door switch LH B8
6.
Seat belt buckle switch LH B12
7.
BCM M18, M19, M20 (view with instru-
ment lower panel LH removed)
Unit
Description
Combination meter
Receives a buzzer output signal from BCM via CAN communication line and sounds the buzzer.
BCM
Judges the light warning conditions from the signals provided by various switches and transmits a
buzzer output signal to the combination meter via CAN communication line if necessary.
Combination switch
(lighting and turn signal switch)
Transmits the lighting switch position signal to BCM.
Front door switch LH
Transmits the door switch signal to BCM.
LKIA0878E
August 2012
2012 Pathfinder
WCS-8
< SYSTEM DESCRIPTION >
WARNING CHIME SYSTEM
SEAT BELT WARNING CHIME : System Description
INFOID:0000000007347525
DESCRIPTION
With ignition switch turned ON and driver seat belt unfastened, seat belt warning chime will sound for approxi-
mately 6 seconds.
• BCM receives seat belt buckle switch signal from combination meter with CAN communication line.
• BCM detects ignition switch turned ON and seat belt buckle switch LH ON. And then transmits buzzer output
signal (seat belt warning chime) to combination meter with CAN communication line.
• When combination meter receives buzzer output signal (seat belt warning chime), it sounds the buzzer.
WARNING OPERATION CONDITIONS
If all of the following conditions are fulfilled
• Ignition switch OFF
→
ON
• Seat belt buckle switch LH is ON (driver seat belt not fastened)
WARNING CANCEL CONDITIONS
Cancels the warning if any of the following conditions is fulfilled.
• Ignition switch OFF
• Seat belt buckle switch LH is OFF (driver seat belt fastened)
SEAT BELT WARNING CHIME : Component Parts Location
INFOID:0000000007347526
AWNIA0238ZZ
1.
Combination switch (lighting and turn
signal switch) M28
2.
Combination meter M24
3.
Key switch M27 (without Intelligent
Key)
4.
Key switch and ignition knob switch
M66 (with Intelligent Key)
5.
Front door switch LH B8
6.
Seat belt buckle switch LH B12
7.
BCM M18, M19, M20 (view with instru-
ment lower panel LH removed)
August 2012
2012 Pathfinder
WCS
WARNING CHIME SYSTEM
WCS-9
< SYSTEM DESCRIPTION >
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SEAT BELT WARNING CHIME : Component Description
INFOID:0000000007347527
KEY WARNING CHIME (WITH INTELLIGENT KEY)
KEY WARNING CHIME (WITH INTELLIGENT KEY) : System Diagram
INFOID:0000000007347528
KEY WARNING CHIME (WITH INTELLIGENT KEY) : System Description
INFOID:0000000007347529
WHEN MECHANICAL KEY IS USED
With the key inserted into the key switch, and the ignition switch in the LOCK or ACC position, when driver's
door is opened, the warning chime will sound.
• BCM detects key inserted into the ignition switch, and sends key warning signal to combination meter with
CAN communication line.
• When combination meter receives key warning signal, it sounds the warning chime.
WHEN INTELLIGENT KEY IS CARRIED WITH THE DRIVER
Unit
Description
Combination meter
• Receives the seat belt buckle switch signal from the seat belt buckle switch and transmits it to
BCM via CAN communication line.
• Receives a buzzer output signal from BCM via CAN communication line and sounds the buzzer.
BCM
Judges the seat belt warning condition from the seat belt buckle switch signal received from the
combination meter and transmits a buzzer output signal to the combination meter via CAN commu-
nication line if necessary.
Seat belt buckle switch LH
Transmits seat belt buckle switch signal to combination meter.
WKIA5464E
August 2012
2012 Pathfinder
WCS-10
< SYSTEM DESCRIPTION >
WARNING CHIME SYSTEM
KEY WARNING CHIME (WITH INTELLIGENT KEY) : Component Parts Location
INFOID:0000000007347530
KEY WARNING CHIME (WITH INTELLIGENT KEY) : Component Description
INFOID:0000000007347531
KEY WARNING CHIME (WITHOUT INTELLIGENT KEY)
AWNIA0238ZZ
1.
Combination switch (lighting and turn
signal switch) M28
2.
Combination meter M24
3.
Key switch M27 (without Intelligent
Key)
4.
Key switch and ignition knob switch
M66 (with Intelligent Key)
5.
Front door switch LH B8
6.
Seat belt buckle switch LH B12
7.
BCM M18, M19, M20 (view with instru-
ment lower panel LH removed)
Unit
Description
Combination meter
Receives key warning signal from BCM via CAN communication line and sounds the buzzer.
BCM
Judges the key warning condition using the door switch signal received from the front door switch
LH, and the key switch signal received from the key switch and ignition knob switch. It then transmits
a buzzer output signal to the combination meter via CAN communication line if necessary.
Front door switch LH
Transmits door switch signal to BCM.
Key switch and ignition knob
switch
Transmits key switch signal to BCM.
August 2012
2012 Pathfinder
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