The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the “SRS AIR BAG” and
“SEAT BELT” of this Service Manual.

WARNING:

Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precautions for Removing Battery Terminal

INFOID:0000000011677835

• With the adoption of Auto ACC function, ACC power is automatically supplied by operating the intelligent key

or remote keyless entry or by opening/closing the driver side door. In addition, ACC power is supplied even
after the ignition switch is turned to the OFF position, i.e. ACC power is supplied for a certain fixed time.

• When disconnecting the 12V battery terminal, turn off the ACC

power before disconnecting the 12V battery terminal, observing
“How to disconnect 12V battery terminal” described below.
NOTE:
Some ECUs operate for a certain fixed time even after ignition
switch is turned OFF and ignition power supply is stopped. If the
battery terminal is disconnected before ECU stops, accidental DTC
detection or ECU data damage may occur.

• For vehicles with the 2-batteries, be sure to connect the main bat-

tery and the sub battery before turning ON the ignition switch.
NOTE:
If the ignition switch is turned ON with any one of the terminals of
main battery and sub battery disconnected, then DTC may be detected.

• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.

NOTE:
The removal of 12V battery may cause a DTC detection error.

HOW TO DISCONNECT 12V BATTERY TERMINAL

Disconnect 12V battery terminal according to instruction described below.
1.

Open the hood.

Turn ignition switch to the ON position.

Turn ignition switch to the OFF position with the driver side door opened.

Get out of the vehicle and close the driver side door.

SEF289H

MWI

PRECAUTIONS

MWI-5

< PRECAUTION >

Wait at least 3 minutes. For vehicle with the engine listed below, remove the battery terminal after a lapse
of the specified time.

CAUTION:

While waiting, never operate the vehicle such as locking, opening, and closing doors. Violation of
this caution results in the activation of ACC power supply according to the Auto ACC function.

Remove 12V battery terminal.

CAUTION:

After installing 12V battery, always check self-diagnosis results of all ECUs and erase DTC.

D4D engine

: 20 minutes

HRA2DDT

: 12 minutes

K9K engine

: 4 minutes

M9R engine

: 4 minutes

R9M engine

: 4 minutes

V9X engine

: 4 minutes

MWI-6

< PREPARATION >

PREPARATION

PREPARATION

Commercial Service Tools

INFOID:0000000010329936

Tool name

Description

Power tool

Loosening nuts, screws and bolts

PIIB1407E

MWI

COMPONENT PARTS

MWI-7

< SYSTEM DESCRIPTION >

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000010329937

Fuel level sensor unit (main)

Shift selector.

BCM

ABS actuator and electric unit (con-
trol unit)

Water in fuel sensor

Ambient sensor

Engine oil pressure switch

Oil level sensor

TCM

10. ECM

11.

IPDM E/R

12. Brake fluid level switch

E1NIA0077ZZ

MWI-8

< SYSTEM DESCRIPTION >

COMPONENT PARTS

Component Description

INFOID:0000000010329938

13. Fuel level sensor unit

14. Front seat belt buckle switch RH

15. Front seat belt buckle switch LH

16. Occupant detection unit (under pas-

senger seat cushion pad)

17. Rear seat buckle switch RH and cen-

ter

18. Parking brake switch

19. Rear seat buckle switch LH

Lower right side of rear seat

Left side of engine room

Over the glove box

Left side of engine room

Behind of front bumper center

Right side of engine room

Lower left side of rear seat

Unit

Description

Combination meter

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

ECM

Transmits the following signals to the combination meter via CAN communication.
• Engine speed signal
• Engine coolant temperature signal
• Fuel consumption monitor signal
• Fuel filler cap warning display signal

ABS actuator and electric unit
(control unit)

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

IPDM E/R

Transmits the engine oil pressure switch signal to the BCM via CAN communication.

BCM

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

TCM

Transmits the shift position signal to the combination meter via CAN communication.

CVT shift selector (with manual
mode)

Transmits the following signals to the combination meter.
• Manual mode signal
• Non-manual mode signal
• Manual mode shift up signal
• Manual mode shift down signal

Fuel level sensor unit

Transmits the fuel level sensor signal to the combination meter.

Engine oil pressure switch

Transmits the oil pressure switch signal to the IPDM E/R.

Ambient sensor

Transmits the ambient sensor signal to the combination meter.

Parking brake switch

Transmits the parking brake switch signal to the combination meter via EHS/PKB control unit.

MWI

SYSTEM (METER SYSTEM)

MWI-9

< SYSTEM DESCRIPTION >

SYSTEM (METER SYSTEM)

METER SYSTEM

METER SYSTEM : System Diagram

INFOID:0000000010329939

JSNIA3486GB

MWI-10

< SYSTEM DESCRIPTION >

SYSTEM (METER SYSTEM)

METER SYSTEM : System Description

INFOID:0000000010483061

SYSTEM DIAGRAM

Combination Meter Input Signal (CAN Communication Signal)

E1NIA0079GB

Transmit unit

Signal name

ABS actuator and electric unit (control unit)

Vehicle speed signal

ABS warning lamp signal

VDC warning lamp signal

VDC OFF indicator lamp signal

Brake warning lamp signal

MWI

SYSTEM (METER SYSTEM)

MWI-11

< SYSTEM DESCRIPTION >

DESCRIPTION

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
• Speedometer
• Tachometer
• Engine coolant temperature gauge
• Fuel gauge
- Warning lamps
- Indicator lamps
- Meter illumination control
- Meter effect function
- Information display
• The combination meter incorporates a buzzer function that sounds an audible alarm with the integrated

buzzer. Refer to

MWI-10, "METER SYSTEM : System Description"

for further details.

• The combination meter includes an on board diagnosis function.
• The combination meter can be diagnosed with CONSULT.

METER CONTROL FUNCTION LIST

BCM

Dimmer signal

Position light request signal

Door switch signal

Front fog light request signal

High beam request signal

Meter display signal

Sleep wake up signal

Buzzer output signal

Tire pressure data signal

Key ID signal

Turn indicator signal

TPMS malfunction warning lamp signal

Starter relay status signal

Low tire pressure warning lamp signal

Turn indicator signal

TCM

Shift position signal

CVT warning lamp signal

ECM

Engine speed signal

ASCD status signal

Engine coolant temperature signal

Fuel consumption monitor signal

Malfunctioning indicator lamp signal

Engine status signal

Engine oil pressure sensor signal

Fuel filler cap warning display signal

AWD control unit

AWD warning lamp signal

Transmit unit

Signal name

MWI-12

< SYSTEM DESCRIPTION >

SYSTEM (METER SYSTEM)

METER SYSTEM : Fail-safe

INFOID:0000000010329941

The combination meter activates the fail-safe control if the CAN communication lines between each unit are
malfunctioning.

System

Description

Reference

Measuring in-
struments

Speedometer

MWI-13, "SPEEDOMETER : System

Description"

Indicates vehicle speed.

MWI-13,
"SPEEDOME-
TER : System De-
scription"

Tachometer

Indicates engine speed.

MWI-14, "TA-
CHOMETER :
System Descrip-
tion"

Engine coolant temperature gauge

Indicates engine coolant temperature.

MWI-14, "EN-
GINE COOLANT
TEMPERATURE
GAUGE : System
Description"

Fuel gauge

Indicates fuel level.

MWI-15, "FUEL
GAUGE : System
Description"

Information display

The Information display displays status, ac-
cording to system malfunction or vehicle
condition.

MWI-18, "INFOR-
MATION DIS-
PLAY : System
Description"

Meter illumi-
nation control

Meter illumination control function

Switches back and forth between daytime
mode and nighttime mode, according to a
light switch position.

MWI-16, "METER
ILLUMINATION
CONTROL : Sys-
tem Description"

Back light illumination control function

The operation of the illumination control
switch allows the brightness adjustment of
meter illumination.

Meter effect
function

Engine-start effect function

Controls pointers of combination meter,
back light illumination and information dis-
play at engine start to produce illumination
effects.

MWI-17, "METER
EFFECT FUNC-
TION : System
Description"

Driver welcome function

Controls meter illumination to produce illu-
mination effects when getting in the vehicle.

Function

Specifications

Speedometer

Reset to zero by suspending communication.

Tachometer

Engine coolant temperature gauge

Meter illumination control

When suspending communication, changes to
nighttime mode.

Buzzer

Turned off by suspending communication.

MWI

SYSTEM (METER SYSTEM)

MWI-13

< SYSTEM DESCRIPTION >

SPEEDOMETER

SPEEDOMETER : System Diagram

INFOID:0000000010329942

SPEEDOMETER : System Description

INFOID:0000000010329943

• The ABS actuator and electric unit (control unit) converts the rectangular wave signal provided by the wheel

sensor to a vehicle speed signal and transmits it to the combination meter via CAN communication.

• The combination meter indicates the vehicle speed to the speedometer according to the vehicle speed sig-

nal received via CAN communication.

TACHOMETER

Information dis-
play

Trip computer

Current fuel consumption

• When reception time of an abnormal signal is

2 seconds or less, the last received datum is
used for calculation to indicate the result.

• When reception time of an abnormal signal is

more than 2 seconds, the last result calculat-
ed during normal condition is indicated.

Average fuel consumption

Average vehicle speed

Range (Distance to empty)

Driving distance

An indicated value is maintained at communica-
tions blackout.

Interrupt indication

Door open warning

The indicator turns OFF by suspending commu-
nication.

Low tire pressure warning

Fuel filler cap warning

Odo/trip meter

An indicated value is maintained at communica-
tions blackout.

Shift position indicator

The indicator turns OFF by suspending commu-
nication.

Warning lamp/
indicator lamp

ABS warning lamp

Turned on by suspending communication.

Brake warning lamp

EPS warning lamp

VDC warning lamp

AWD warning lamp

Malfunction indicator lamp

VDC OFF indicator lamp

Turned off by suspending communication.

AWD LOCK indicator lamp

Engine oil pressure warning lamp

High beam indicator lamp

Turn signal indicator lamp

Position lamp indicator lamp

A/T CHECK indicator lamp

Low tire pressure warning lamp

After blinking for 1 minute, the lamp remains
ON.

Function

Specifications

JSNIA2973GB

MWI-14

< SYSTEM DESCRIPTION >

SYSTEM (METER SYSTEM)

TACHOMETER : System Diagram

INFOID:0000000010329944

TACHOMETER : System Description

INFOID:0000000010329945

• ECM converts the pulse signal provided by the crankshaft position sensor to an engine speed signal and

transmits it to the combination meter via CAN communication.

• The combination meter indicates the engine speed to the tachometer according to the engine speed signal

received via CAN communication.

ENGINE COOLANT TEMPERATURE GAUGE

ENGINE COOLANT TEMPERATURE GAUGE : System Diagram

INFOID:0000000010329946

ENGINE COOLANT TEMPERATURE GAUGE : System Description

INFOID:0000000010329947

• ECM reads the engine coolant temperature signal from the engine coolant temperature sensor and transmits

the signal to the combination meter via CAN communication.

• The combination meter indicates the engine coolant temperature to the engine coolant temperature gauge

according to the engine coolant temperature signal received via CAN communication.

FUEL GAUGE

FUEL GAUGE : System Diagram

INFOID:0000000010329948

2WD MODELS

JSNIA2974GB

JSNIA3015GB

E1NIA0078GB

MWI

SYSTEM (METER SYSTEM)

MWI-15

< SYSTEM DESCRIPTION >

AWD MODELS

FUEL GAUGE : System Description

INFOID:0000000010329949

CONTROL OUTLINE

The combination meter reads the fuel level sensor signal from the fuel level sensor unit and indicates the fuel
level to the fuel gauge.

REFUEL CONTROL

The combination meter accelerates the fuel gauge segment if the all conditions listed below are met, or the
ignition switch is ON from OFF.
• Ignition switch is ON position.
• The vehicle is not moving.
• The fuel level change by 15 or more.

OIL PRESSURE WARNING LAMP

OIL PRESSURE WARNING LAMP : System Diagram

INFOID:0000000010329950

OIL PRESSURE WARNING LAMP : System Description

INFOID:0000000010329951

• IPDM E/R receives an engine oil pressure switch signal from the engine oil pressure switch and transmits

the signal to BCM via CAN communication.

• BCM transmits the engine oil pressure switch signal received from IPDM E/R to the combination meter via

CAN communication.

• The combination meter turns ON/OFF the engine oil pressure warning lamp, according to an engine oil pres-

sure switch signal received from BCM via CAN communication.

MASTER WARNING LAMP

JSNIA3055GB

JSNIA2464GB

MWI-16

< SYSTEM DESCRIPTION >

SYSTEM (METER SYSTEM)

MASTER WARNING LAMP : System Diagram

INFOID:0000000010329952

MASTER WARNING LAMP : System Description

INFOID:0000000010329953

When receiving a signal from each unit, switch, or sensor, the combination meter turns ON/OFF the master
warning lamp in synchronization with the following warnings on the information display.
• Door open warning
• NO KEY warning
• Parking brake release warning
• Low fuel warning
• Low tire pressure warning
• Fuel filler cap warning
NOTE:
For details on warnings displayed on the information display, refer to

MWI-18, "INFORMATION DISPLAY :

System Description"

METER ILLUMINATION CONTROL

METER ILLUMINATION CONTROL : System Diagram

INFOID:0000000010329954

METER ILLUMINATION CONTROL : System Description

INFOID:0000000010329955

METER ILLUMINATION CONTROL FUNCTION

• Combination meter controls meter illumination, based on the following signal.
- Position light request signal
• The operation of the illumination control switch allows the brightness adjustment of meter illumination.

JSNIA3487GB

JSNIA3328GB

Meter illumination

The number of adjustable

steps

Daytime

Not adjustable

Nighttime

22 step

MWI

SYSTEM (METER SYSTEM)

MWI-17

< SYSTEM DESCRIPTION >

METER EFFECT FUNCTION

METER EFFECT FUNCTION : System Description

INFOID:0000000010435906

SYSTEM DIAGRAM

ENGINE-START EFFECT FUNCTION

When recognizing an engine start, the combination meter controls the following items for producing the effect:
• Speedometer
• Tachometer
• Engine coolant temperature gauge
• Fuel gauge
• Meter illumination

Meter and Illumination Operations During Engine-start Effect

The combination meter controls the following items during the engine-start effect.

NOTE:
The pointers are stopped and illumination is turned off while cranking the engine.

Engine Start Judgement

The combination meter judges “engine-start” and activates the engine-start effect only once when the follow-
ing operational conditions are all satisfied.

NOTE:
Engine-start effect exits when any of the above operational conditions is cancelled during the engine-start
effect.

INFORMATION DISPLAY

JSNIA6076GB

Control item

Operation

Speedometer

Sweeps the pointer.

Tachometer

Sweeps the pointer.

Engine coolant temperature gauge

Stops the pointer.

Fuel gauge

Stops the pointer.

Meter illumination

Pointers

Turns on the illumination at the effect level.

Information display

Turns on the illumination at the normal brightness level.

Other than those above

Increases the brightness to the effect level in stages.

Condition

Ignition switch

ON position

Vehicle speed

Less than 0.6 MPH (1 km/h)

Engine state

Other than the time of cranking the engine

500 rpm or more

Information display
(SETTING)

The setting of “EFFECT” is “ON.”

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