Infiniti EX35. Manual — part 1492

WCS

METER BUZZER CIRCUIT

WCS-23

< COMPONENT DIAGNOSIS >

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METER BUZZER CIRCUIT

Description

INFOID:0000000003135102

• The buzzer for warning chime system is installed in the combination meter.
• The combination meter sounds the alarm buzzer based on the signals transmitted from various units.

Component Function Check

INFOID:0000000003135103

1.

CHECK OPERATION OF METER BUZZER

1.

Select “BUZZER” of “BCM” on CONSULT-III.

2.

Perform “LIGHT WARN ALM” of “ACTIVE TEST”.

Does meter buzzer beep?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL

Select the “Data Monitor” for the “METER/M&A” and check the “BUZZER” monitor value.

Is the inspection result normal?

YES

>> Replace combination meter.

NO

>> Replace BCM. Refer to

BCS-84, "Removal and Installation"

.

Diagnosis Procedure

INFOID:0000000003135104

1.

CHECK POWER SUPPLY OF COMBINATION METER

Check power supply of combination meter. Refer to

WCS-20, "COMBINATION METER : Diagnosis Proce-

dure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair power supply circuit of combination meter.

2.

CHECK POWER SUPPLY OF UNIFIED METER AND A/C AMP.

Check power supply of unified meter and A/C amp. Refer to

WCS-20, "UNIFIED METER AND A/C AMP. :

Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair power supply circuit of unified meter and A/C amp.

BUZZER

Under the condition of buzzer input

: On

Except above

: Off

WCS-24

< COMPONENT DIAGNOSIS >

SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT

SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT

Description

INFOID:0000000003135105

Transmits a seat belt buckle switch signal to the unified meter and A/C amp.

Component Function Check

INFOID:0000000003135106

1.

CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL

Select the “Data Monitor” for the “METER/M&A” and check the “BUCKLE SW” monitor value.

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003135107

1.

CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL

1.

Turn ignition switch ON.

2.

Check voltage between unified meter and A/C amp. harness connector and ground.

Is the inspection result normal?

YES

>> Replace unified meter and A/C amp.

NO

>> GO TO 2.

2.

CHECK SEAT BELT BUCKLE SWITCH CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect unified meter and A/C amp. connector and seat belt buckle switch (driver side) connector.

3.

Check continuity between unified meter and A/C amp. harness connector and seat belt buckle switch
(driver side) harness connector.

4.

Check harness continuity between unified meter and A/C amp. harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT

Check harness continuity between seat belt buckle switch (driver side) harness connector and ground.

BUCKLE SW

When seat belt is fastened

: Off

When seat belt is unfastened

: On

Terminals

Condition

Voltage

(Approx.)

(+)

(-)

Unified meter and A/C amp.

Ground

Connector

Terminal

M66

9

When driver seat belt is fastened

12 V

When driver seat belt is unfastened

0 V

Unified meter and A/C amp.

Seat belt buckle switch (driver side)

Continuity

Connector

Terminal

Connector

Terminal

M66

9

B13

1

Existed

Unified meter and A/C amp.

Ground

Continuity

Connector

Terminal

M66

9

Not existed

WCS

SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT

WCS-25

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Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000003135108

1.

CHECK SEAT BELT BUCKLE SWITCH UNIT

1.

Turn ignition switch OFF.

2.

Disconnect the seat belt buckle switch connector.

3.

Check continuity between terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the seat belt buckle. Refer to

SB-7, "SEAT BELT BUCKLE : Removal and Installation"

.

Seat belt buckle switch (driver side)

Ground

Continuity

Connector

Terminal

B13

2

Existed

Terminal

Condition

Continuity

1

2

When seat belt is fastened

Not existed

When seat belt is unfastened

Existed

WCS-26

< COMPONENT DIAGNOSIS >

WARNING CHIME SYSTEM

WARNING CHIME SYSTEM

Wiring Diagram - WARNING CHIME -

INFOID:0000000003135109

JCNWM0721GB