Nissan Sentra. Manual - part 640

MWI-6

< SYSTEM DESCRIPTION >

COMPONENT PARTS

METER SYSTEM : Component Description

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AWNIA3363ZZ

1.

ABS actuator and electric unit (control 
unit)

2.

Combination meter

3.

CVT shift selector (with CVT)
(O/D OFF switch) 

4.

Air bag diagnosis sensor unit
(view with center console assembly re-
moved)

5.

Parking brake switch
(view with center console removed)

6.

Fuel level sensor unit and fuel pump
(view with fuel pump inspection cover 
removed)

7.

Seat belt buckle switch LH
(RH similar) 

8.

Front door switch LH
(RH similar) 

9.

BCM
(view with instrument panel removed)

10. Power steering control module

(view with steering column assembly 
removed)

11. Brake fluid level switch

12. TCM (with CVT)

13. ECM

14. Engine oil pressure sensor 

15. Illumination control switch

16. ECO mode switch (with CVT)

17. Sport mode switch (with CVT)

18. Ambient sensor

19. A/C auto amp.

(with auto A/C) 
(view with A/C switch assembly re-
moved)

20. Washer fluid level switch

(view with front fascia removed)

21. Steering switch

Unit

Description

Combination meter

Controls the following with the signals received from each unit via CAN communication and the signals 
from switches and sensors:
• Speedometer
• Tachometer
• Engine coolant temperature gauge
• Fuel gauge
• Warning lamps
• Indicator lamps
• Meter illumination control
• Information display

Steering switch

Transmits the meter control switch signal to the combination meter.

MWI

COMPONENT PARTS

MWI-7

< SYSTEM DESCRIPTION >

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Illumination control switch

Transmits the following signals to the combination meter:
• Illumination control switch signal (+)
• Illumination control switch signal (

−)

ECM

Transmits the following signals to the combination meter via CAN communication:
• Engine speed signal
• Engine coolant temperature signal
• Engine oil pressure warning signal
• Fuel consumption monitor signal

ABS actuator and electric unit 
(control unit)

Transmits the vehicle speed signal to the combination meter via CAN communication.

Power steering control module Transmits the EPS signal to the combination meter via CAN communication.

BCM

Transmits the following signals to the combination meter via CAN communication:
• Position light request signal
• Low tire pressure warning lamp signal
• Door switch signal
• Trunk lamp switch signal

TCM

Receives the O/D OFF switch signal from the combination meter via CAN communication.
Transmits the following signals to the combination meter via CAN communication:  
• O/D OFF indicator request signal
• CVT shift selector position signal

CVT shift selector switch
(O/D OFF switch)

Transmits the O/D OFF switch signal to the combination meter

Fuel level sensor unit

Transmits the fuel level sensor signal to the combination meter.

Seat belt buckle switch LH
(RH similar) 

Transmits the seat belt buckle switch LH signal to the combination meter.

Air bag diagnosis sensor unit

Transmits the following signals to the combination meter: 
• Seat belt buckle switch RH signal 
• Air bag warning indicator

Engine oil pressure sensor

Transmits the engine oil pressure sensor signal to the ECM.

Ambient sensor

Transmits the ambient sensor signal to the combination meter (without auto a/c).

Transmits the ambient sensor signal to the A/C auto amp. (with auto a/c).

A/C auto amp. 

• Receives the ambient sensor signal from the ambient sensor (with auto a/c).
• Transmits the ambient sensor signal to the combination meter via CAN communication.

Parking brake switch

Transmits the parking brake switch signal to the combination meter.

Washer fluid level switch

Transmits the washer fluid level switch signal to the combination meter.

Brake fluid level switch

Transmits the brake fluid level switch signal to the combination meter.

Unit

Description

MWI-8

< SYSTEM DESCRIPTION >

SYSTEM

SYSTEM

METER SYSTEM
METER SYSTEM : System Diagram

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METER SYSTEM : System Description

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COMBINATION METER

• The combination meter receives signals from switches, sensors and modules to control the following func-

tions:

- Speedometer/tachometer

- Warning lamps

- Indicator lamps

- Meter illumination control

- Information display

• The combination meter has an integrated buzzer that is activated when it receives a signal from the BCM via

CAN communication. Refer to 

WCS-6, "WARNING CHIME SYSTEM : System Description"

 for further

details.

• The combination meter includes an on-board diagnosis function.

• The combination meter can be diagnosed with CONSULT.

AWNIA2857GB

MWI

SYSTEM

MWI-9

< SYSTEM DESCRIPTION >

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METER SYSTEM : Arrangement of Combination Meter

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METER SYSTEM : Fail-Safe

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The combination meter activates the fail-safe control if CAN communication with each unit is malfunctioning.

AWNIA2704GB