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/

M&A)"

.

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

Refer to 

DLK-7, "Work Flow"

.

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