Nissan Sentra B18 (2020-2025) Service Manual: Component Parts

Nissan Sentra B18 (2020-2025) Service Manual / Driver Information & Multimedia / Meter, Warning Lamp & Indicator :: Type B / System Description / Component Parts

Meter System

Component Parts Location

Component Parts Location MODELS WITH CVT

View of engine assembly removed

No.	Component	Function
1.	Rear seat belt buckle switch RH & CTR	Transmits the rear seat belt buckle switch RH & CTR signal to the air bag diagnosis sensor unit.
2.	Front seat belt buckle switch RH	Transmits the front seat belt buckle switch RH signal to the air bag diagnosis sensor unit.
3.	CVT selector (drive sport mode switch) (if so equipped)	Transmits the drive sport mode switch signal to the BCM.
4.	ADAS (Advanced Driver Assistance System) control unit 2	Transmits each signal to the combination meter via CAN communication. Refer to System Description. Refer to Component Parts Location for detailed component location.
5.	ABS (Anti-lock Braking System) actuator and electric unit (control unit)	Transmits each signal to the combination meter via CAN communication. Refer to System Description. Refer to Component Parts Location for detailed component location.
6.	Washer fluid level switch (if so equipped)	Transmits the washer fluid level switch signal to the combination meter. Refer to Component Parts Location for detailed component location.
7.	Ambient sensor	Transmits the ambient sensor signal to the combination meter.
8.	TCM (Transmission Control Module)	Transmits each signal to the combination meter via CAN communication. Refer to System Description. Refer to Component Parts Location for detailed component location.
9.	ECM (Engine Control Module)	Transmits each signal to the combination meter via CAN communication. Refer to System Description. Refer to Component Parts Location for detailed component location.
10.	Brake fluid level switch	Transmits the brake fluid level switch signal to the combination meter. Refer to Component Parts Location for detailed component location.
11.	Parking brake switch	Transmits the parking brake switch signal to the combination meter.
12.	BCM (Body Control Module)	Transmits each signal to the combination meter via CAN communication. Refer to System Description. Refer to Component Parts Location for detailed component location.
13.	Air bag diagnosis sensor unit	Transmits each signal to the combination meter via CAN communication. Refer to System Description. Refer to Component Parts Location for detailed component location.
14.	Front seat belt buckle switch LH	Transmits the front seat belt buckle switch LH signal to the BCM.
15.	Front door switch LH	Transmits the front door switch LH signal to the BCM.
16.	Fuel level sensor unit and fuel pump (fuel level sensor)	Transmits the fuel level sensor signal to the combination meter.
17.	Rear seat belt buckle switch LH	Transmits the rear seat belt buckle switch LH signal to the air bag diagnosis sensor unit.
18.	Trunk lid opener assembly (ajar switch)	Transmits the trunk lid opener assembly (ajar switch) signal to the BCM.
19.	Combination meter	Refer to Combination Meter.
20.	ECO mode switch	Transmits the ECO mode switch signal to the BCM.
21.	Illumination control switch	Refer to Illumination Control Switch.
22.	Trip reset switch	Refer to Trip Reset Switch.
23.	Steering switches	Refer to Steering Switches.
24.	Combination switch (spiral cable)	Provides a pass-through for the steering switch signal from the steering switches to the combination meter.
25.	Start/stop OFF switch (if so equipped)	Transmits the start/stop OFF switch signal to the BCM.
26.	Engine oil pressure sensor	Transmits the engine oil pressure sensor signal to the ECM.

MODELS WITH M/T

View of engine assembly removed

Left side of instrument panel

No.	Component	Function
1.	Rear seat belt buckle switch RH & CTR	Transmits the rear seat belt buckle switch RH & CTR signal to the air bag diagnosis sensor unit.
2.	Front seat belt buckle switch RH	Transmits the front seat belt buckle switch RH signal to the air bag diagnosis sensor unit.
3.	ADAS (Advanced Driver Assistance System) control unit 2	Transmits each signal to the combination meter via CAN communication. Refer to System Description. Refer to Component Parts Location for detailed component location.
4.	ABS (Anti-lock Braking System) actuator and electric unit (control unit)	Transmits each signal to the combination meter via CAN communication. Refer to System Description. Refer to Component Parts Location for detailed component location.
5.	Washer fluid level switch (if so equipped)	Transmits the washer fluid level switch signal to the combination meter. Refer to Component Parts Location for detailed component location.
6.	Ambient sensor	Transmits the ambient sensor signal to the combination meter.
7.	ECM (Engine Control Module)	Transmits each signal to the combination meter via CAN communication. Refer to System Description. Refer to Component Parts Location for detailed component location.
8.	Brake fluid level switch	Transmits the brake fluid level switch signal to the combination meter. Refer to Component Parts Location for detailed component location.
9.	BCM (Body Control Module)	Transmits each signal to the combination meter via CAN communication. Refer to System Description. Refer to Component Parts Location for detailed component location.
10.	Air bag diagnosis sensor unit	Transmits each signal to the combination meter via CAN communication. Refer to System Description. Refer to Component Parts Location for detailed component location.
11.	Parking brake switch	Transmits the parking brake switch signal to the combination meter.
12.	Front seat belt buckle switch LH	Transmits the front seat belt buckle switch LH signal to the BCM.
13.	Front door switch LH	Transmits the front door switch LH signal to the BCM.
14.	Fuel level sensor unit and fuel pump (fuel level sensor)	Transmits the fuel level sensor signal to the combination meter.
15.	Rear seat belt buckle switch LH	Transmits the rear seat belt buckle switch LH signal to the air bag diagnosis sensor unit.
16.	Trunk lid opener assembly (ajar switch)	Transmits the trunk lid opener assembly (ajar switch) signal to the BCM.
17.	Combination meter	Refer to Combination Meter.
18.	ECO mode switch	Transmits the ECO mode switch signal to the BCM.
19.	Illumination control switch	Refer to Illumination Control Switch.
20.	Trip reset switch	Refer to Trip Reset Switch.
21.	Steering switches	Refer to Steering Switches.
23.	Engine oil pressure sensor	Transmits the engine oil pressure sensor signal to the ECM.
24.	Combination switch (spiral cable)	Provides a pass-through for the steering switch signal from the steering switches to the combination meter.

Design

Design

ARRANGEMENT OF COMBINATION METER

USA

Except USA

Combination Meter

Combination Meter

The combination meter controls the following items according to the signals received from each unit via CAN communication and the signals from switches and sensors:

Measuring instruments
Indicator lamps
Warning lamps
Meter illumination control
Information display

Trip Reset Switch

Trip Reset Switch

The trip reset switch is located on the instrument panel lower LH.
Transmits the trip reset signal to the combination meter.

No.	Switch name	Operation	Description
1.	Trip reset switch	Press	The trip meter can be switched between A and B. Trip meter A/B can be reset by pressing and holding the trip reset switch. A trip computer value displayed on the information display can be reset by pressing and holding the trip reset switch for 1 second or more. All trip computer values can be reset by pressing and holding the trip reset switch for 3 seconds or more.

Illumination Control Switch

Illumination Control Switch

The illumination control switch is located on the instrument lower panel LH.
Transmits the following signals to the combination meter:
- Illumination control switch signal (+)
- Illumination control switch signal (−)

No.	Switch name	Operation	Description
1.	Illumination control switch (−)	Press	The brightness of combination meter and information display can be adjusted.
2.	Illumination control switch (+)	Press

Steering Switches

Steering Switches

The steering switches are located on the steering wheel.
The steering switch transmits the steering switch signal to the combination meter.

No.	Switch name	Operation	Description
1.	OK/Up/Down/Left/Right switch	Press	The information display settings can be changed.
2.	Back switch	Press	The information display settings can be changed.

System

Meter System System Description System Description SYSTEM DIAGRAM Combination Meter Input Signal (CAN Communication Signal) ...

Other materials:

Engine compartment
CAUTION Never use a fuse of a higher or lower amperage rating than specified on the fuse box cover. This could damage the electrical system or cause a fire. If any electrical equipment does not come on, check for an open fuse. Be sure the ignition switch and the headlight switch are ...

Oil seal
Valve oil seal : Removal and Installation REMOVAL Rotate crankshaft, and set piston whose valve oil seal is to be removed to TDC. This will prevent valve from dropping into cylinder. CAUTION: When rotating crankshaft, be careful to avoid scarring front cover with timing chain. Re ...

When Both Main Power Window and Door Lock/unlock Switch and Rear Power Window Switch Rh Are Operated
Diagnosis Procedure Diagnosis Procedure CHECK REAR POWER WINDOW SWITCH RH Check rear power window switch RH. Refer to Diagnosis Procedure. Is the inspection result normal? YES >> GO TO 2. NO &g ...