MWI
SYSTEMMWI-13
< SYSTEM DESCRIPTION >
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MASTER WARNING LAMP : System DiagramINFOID:0000000009461683
MASTER WARNING LAMP : System DescriptionINFOID:0000000009461684
When receiving a signal from each unit, switch, or s ensor, the combination meter turns ON/OFF the master
warning lamp in synchronization with the following warnings on the information display:
• Door/trunk open warning
• Parking brake release warning
• Low fuel warning
• Low washer fluid warning
• NO KEY warning
• Low tire pressure warning
• Fuel filler cap warning
METER ILLUMINATION CONTROL
METER ILLUMINATION CONTROL : System DiagramINFOID:0000000009461685
METER ILLUMINATION CONTROL : System DescriptionINFOID:0000000009461686
METER ILLUMINATION CONTROL
Meter illumination control adjusts the brightness of the combination meter illumination using the meter control
switch (illumination control switch).
METER ILLUMINATION CONTROL FUNCTION
The operation of the illumination control switch changes brightness of the meter illumination.
METER EFFECT FUNCTION
AWNIA2975GB
AWNIA2548GB
Meter illumination The number of adjustable steps
Daytime 22 steps
Nighttime 22 steps
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
MWI
SYSTEMMWI-15
< SYSTEM DESCRIPTION >
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Engine-start effect exits when any of the above operat ional conditions is cancelled during the engine-start
effect.
INFORMATION DISPLAY
INFORMATION DISPLAY : System DiagramINFOID:0000000009461689
INFORMATION DISPLAY : System DescriptionINFOID:0000000009461690
FUNCTION
The information display can indicate the following items.
• Outside air temperature
• Trip computer
• Intelligent Key operation information
• CVT shift position indicator
• Odometer
• Warning/Indication messages (Door/trunk open, low oil pressure, CVT, low fuel, low washer fluid, I-Key,
release parking brake, low tire pressure and loose fuel cap).
OUTSIDE AIR TEMPERATURE INDICATION
Displays the ambient temperature based on signals received from:
• The A/C auto amp. via CAN communication (with auto A/C).
• The IPDM E/R (without auto A/C).
LOOSE FUEL CAP
AWNIA2645GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
MWI-20
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (METER)
FUEL W/L
[On/Off] Displays [ON/OFF] condition of low-fuel warning message.
WASHER W/L
[On/Off] Displays [ON/OFF] condition of low washer fluid warning message.
AIR PRES W/L
[ON/OFF] Displays [ON/OFF] condition of tire pressure warning lamp.
KEY G/Y W/L
[On/Off] Displays [ON/OFF] condition of key green warning lamp.
EPS W/L
[On/Off] Displays [ON/OFF] condition of EPS warning indicator.
LCD Displays the value of Intelligent Key system message indication.
ACC SET SPEED
[Off, km/h or mph] Displays OFF or SET vehicle speed status in the information display.
ACC UNIT
[On/Off] Displays [ON/OFF] condition of display unit in the information display.
SHIFT IND
[P, R, N, D, DS] Displays [P, R, N, D, DS] shift selector position.
FUEL CAP W/L
[On/Off] Displays [ON/OFF] condition of loose fuel cap warning message.
O/D OFF SW
[ON/OFF] Displays [ON/OFF] condition of O/D OFF switch.
M RANGE SW
[On/Off] Displays [ON/OFF] condition of manual mode switch.
NM RANGE SW
[On/Off] Displays [ON/OFF] condition of non-manual mode switch.
AT SFT UP SW
[On/Off] Displays [ON/OFF] condition of manual mode shift up switch.
AT SFT DWN SW
[On/Off] Displays [ON/OFF] condition of manual mode shift down switch.
ST SFT UP SW
[On/Off] Displays [ON/OFF] condition of paddle shift up switch.
ST SFT DWN SW
[On/Off] Displays [ON/OFF] condition of paddle shift down switch.
PKB SW
[On/Off] Displays [ON/OFF] condition of parking brake switch.
BUCKLE SW
[ON/OFF] Status of seat belt buckle switch (LH).
BRAKE OIL SW
[On/Off] Displays [ON/OFF] condition of brake fluid level switch.
PASS BUCKLE SW
[ON/OFF] Status of passenger seat belt buckle switch (RH).
DISTANCE
[Mi] or [km] Displays distance to empty.
OUTSIDE TEMP
[ ° F or °C] Displaysthe ambient air temperature which is input from the ambient sensor.
FUEL LOW SIG
[On/Off] Displays [ON/OFF] condition
of low-fuel warning signal.
BUZZER
[On/Off] XBuzzer status (in the combination meter) is detected from the buzzer output signal
received from each unit via CAN communication and the warning output condition
of the combination meter.
BSW IND
[ON/OFF] Displays [ON/OFF] condition of BSW warning indicator message in the informa-
tion display.
Display item [Unit]
MAIN
SIGNALS Description
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
MWI
COMBINATION METERMWI-23
< ECU DIAGNOSIS INFORMATION >
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CRUISE W/L Ignition switch ON CRUISE warning indication On
CRUISE warning indication Off
CVT IND Ignition switch ON CVT indicator ON On
CVT indicator OFF Off
SET IND Ignition switch ON SET indicator ON On
SET indicator OFF Off
FUEL LOW SIG Ignition switch ON During low fuel level indication On
Except during low fuel level indication Off
O/D OFF IND Ignition switch ON O/D OFF indicator ON On
O/D OFF indicator OFF Off
FUEL W/L Ignition switch ON During low fuel level indication On
Except during low fuel level indication Off
WASHER W/L Ignition switch ON Low washer fluid warning indication On
Except during low washer fluid warning in-
dication Off
AIR PRES W/L Tire pressure warn-
ing lamp operation When tire pressure
warning lamp is ON On
When tire pressure wa rning lamp is OFF Off
KEY G/Y W/L Ignition switch ON During Intelligent Key system malfunction
indication On
Other than the above Off
EPS W/L Ignition switch ON EPS warning lamp ON On
EPS warning lamp OFF Off
LCD Ignition switch ACC During engine start information indication B&P
ACC SET SPEED Ignition switch ON During set vehicle speed indicator not dis-
played Off
During set vehicle speed indicator dis-
played Indicates the set vehicle speed
ACC UNIT Ignition switch ON Set vehicle speed indicator unit display ON On
Set vehicle speed indicator unit display
OFF Off
SHIFT IND Ignition switch ON Position of shift selector [P, R, N, D, DS]
FUEL CAP W/L Ignition switch ON Fuel filler cap warning display ON On
Fuel filler cap warning display OFF Off
O/D OFF SW Ignition switch ON Overdrive control switch ON On
Overdrive control switch OFF Off
M RANGE SW Ignition switch ON Shift selector in manual mode position On
Other than the above Off
NM RANGE SW Ignition switch ON Shift selector in manual mode position Off
Other than the above On
AT SFT UP SW Ignition switch ON Shift selector operated in the up position On
Other than the above Off
AT SFT DWN SW Ignition switch ON Shift selector operated in the down position On
Other than the above Off
ST SFT UP SW Ignition switch ON Paddle shifter operated in up position On
Shift selector is in non manual mode up
position Off
Monitor Item Condition Value/Status
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PCS-2
PREPARATION .............................................. ...34
Special Service Tool ............................................ ...34
SYSTEM DESCRIPTION ............................35
COMPONENT PARTS .................................... ...35
Component Parts Location .................................. ...35
SYSTEM .......................................................... ...36
POWER DISTRIBUTION SYST EM ........................ ...36
POWER DISTRIBUTION SYSTEM : System Dia-
gram .................................................................... ...
36
POWER DISTRIBUTION SYSTEM : System De-
scription ............................................................... ...
36
DIAGNOSIS SYSTEM (BCM) ............................38
COMMON ITEM ..................................................... ...38
COMMON ITEM : CONSULT Function (BCM -
COMMON ITEM) ................................................. ...
38
INTELLIGENT KEY ................................................ ...39
INTELLIGENT KEY : CONSULT Function (BCM -
INTELLIGENT KEY) ........ .......................................
39
ECU DIAGNOSIS INFORMATION ........... ...43
BCM, IPDM E/R .............................................. ...43
List of ECU Reference ......................................... ...43
WIRING DIAGRAM .....................................44
POWER DISTRIBUTION SYSTEM ................ ...44
Wiring Diagram .................................................... ...44
BASIC INSPECTION ...................................53
DIAGNOSIS AND REPAIR WORKFLOW ...... ...53
Work Flow ............................................................ ...53
DTC/CIRCUIT DIAGNOSIS ...................... ...56
U1000 CAN COMM CIRCUIT ......................... ...56
Description ........................................................... ...56
DTC Logic ...............................................................56
Diagnosis Procedure ..............................................56
U1010 CONTROL UNIT (CAN) .........................57
DTC Logic ............................................................ ...57
Diagnosis Procedure ..............................................57
B260A IGNITION RELAY ..................................58
DTC Logic ............................................................ ...58
Diagnosis Procedure ..............................................58
B2614 ACC RELAY CIRCUIT ...........................60
DTC Logic ............................................................ ...60
Diagnosis Procedure ..............................................60
Component Inspection (Relay) ...............................61
B2615 BLOWER RELAY CIRCUIT ...................62
DTC Logic ............................................................ ...62
Diagnosis Procedure ...............................................62
Component Inspection (Relay) ...............................63
B2616 IGNITION RELAY CIRCUIT ...................64
DTC Logic ............................................................ ...64
Diagnosis Procedure ...............................................64
Component Inspection (Relay) ...............................65
B2618 BCM .......................................................66
DTC Logic ............................................................ ...66
Diagnosis Procedure ...............................................66
B261A PUSH-BUTTON IGNITION SWITCH .....68
DTC Logic ............................................................ ...68
Diagnosis Procedure ...............................................68
B26F1 IGNITION RELAY ..................................70
DTC Logic ............................................................ ...70
Diagnosis Procedure ...............................................70
B26F2 IGNITION RELAY ..................................72
DTC Logic ............................................................ ...72
Diagnosis Procedure ...............................................72
B26F6 BCM .......................................................74
DTC Logic ............................................................ ...74
Diagnosis Procedure ...............................................74
PUSH-BUTTON IGNITION SWITCH .................76
Component Function Check ............................... ...76
Diagnosis Procedure ...............................................76
Component Inspection ............................................77
POWER SUPPLY AND GROUND CIRCUIT .....79
BCM ........................................................................ ...79
BCM : Diagnosis Procedure ....................................79
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) ........................... ...
79
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) : Diagnosis Pro-
cedure .................................................................. ...
79
SYMPTOM DIAGNOSIS ............................81
PUSH-BUTTON IGNITION SWITCH DOES
NOT OPERATE .............................................. ...
81
Description ........................................................... ...81
Diagnosis Procedure ...............................................81
REMOVAL AND INSTALLATION ..............82
BCM (BODY CONTROL MODULE) ............... ...82
Removal and Installation .........................................82
PUSH BUTTON IGNITION SWITCH .............. ...83
Exploded View ..................................................... ...83
Removal and Installation .........................................83
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
PCS
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PCS-13
< ECU DIAGNOSIS INFORMATION > [IPDM E/R]
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ST/INHI RLY
Ignition switch ON Off
At engine cranking ST →INHI
The status of starter relay or starter control relay cannot be recognized by
the battery voltage malfunction, etc. when the starter relay is ON and the
starter control relay is OFF UNKWN
DETENT SW Ignition switch ON • Press the selector button with
CVT selector lever in P position
• CVT selector lever in any position
other than P Off
Release the CVT selector button with CVT selector lever in P position On
DTRL REQ DTRL OFF Off
DTRL ON On
HOOD SW Hood closed Off
Hood open On
THFT HRN REQ Not operated Off
• Panic alarm is activated
• Horn is activated with VEHICLE SECURITY (THEFT WARNING) SYS- TEM On
HORN CHIRP Not operated Off
Door locking with Intelligent Key (horn chirp mode) On
HOOD SW 2 Hood closed Off
Hood open On
Monitor Item Condition Value/Status
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
PCS-36
< SYSTEM DESCRIPTION >[POWER DISTRIBUTION SYSTEM]
SYSTEM
SYSTEM
POWER DISTRIBUTION SYSTEM
POWER DISTRIBUTION SYSTEM : System DiagramINFOID:0000000009461624
POWER DISTRIBUTION SYSTEM
: System DescriptionINFOID:0000000009461625
SYSTEM DESCRIPTION
• PDS (POWER DISTRIBUTION SYSTEM ) is the system that BCM controls with the operation of the push-
button ignition switch and performs the power distribution to each power circuit. This system is used instead
of the mechanical power supply changing mechanism wi th the operation of the conventional key cylinder.
• The push-button ignition switch can be operated when Intelligent Key is in the following condition.
- Intelligent Key is in the detection area of the inside key antenna.
- Intelligent Key backside is contacted to push-button ignition switch.
• The push-button ignition switch operation is input to BCM as a signal. BCM changes the power supply posi-
tion according to the status and operates the following relays to supply power to each power circuit.
- Ignition relay-1
- Ignition relay-2
- Accessory relay-1
- Accessory relay-2
- Front blower motor relay
NOTE:
The engine switch operation changes due to the conditions of brake pedal, selector lever and vehicle speed.
• The power supply position can be confirmed with the light ing of the indicators in the push-button ignition
switch.
BATTERY SAVER SYSTEM
When all the following conditions are met for 30 minutes, t he battery saver system will cut off the power supply
to prevent battery discharge.
• The ignition switch is in the ACC or ON position
• All doors are closed
• Selector lever is in the P (park) position
Reset Condition of Battery Saver System
In order to prevent the battery from discharging, the battery saver system will cut off the power supply when all
doors are closed, the selector lever is in P (park) positi on and the ignition switch is left in the ACC or ON posi-
tion for 30 minutes. If any of the following conditions are met the battery saver system is released and the
steering will change automatically to lock position from OFF position.
• Opening any door
• Operating door request switch on door handle
• Operating Intelligent Key
AWMIA1282GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
PCS
SYSTEMPCS-37
< SYSTEM DESCRIPTION > [POWER DISTRIBUTION SYSTEM]
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POWER SUPPLY POSITION CHANGE TABLE BY
PUSH-BUTTON IGNITION SWITCH OPERA-
TION
The power supply position changing operation can be performed with the following operations.
NOTE:
• When an Intelligent Key is within the detection area of inside key antenna and when Intelligent Key backside
is contacted to push-button ignition switch, it is equivalent to the operations below.
• When starting the engine, the BCM monitors under the engine start conditions:
- Brake pedal operating condition
- Selector lever position
- Vehicle speed
Vehicle speed: less than 4 km/h (2.5 MPH)
Vehicle speed: 4 km/h (2.5 MPH) or more
Emergency stop operation
• Press and hold the push-button ignition switch for 2 seconds or more.
• Press the push-button ignition switch 3 times or more within 1.5 seconds. Power supply position
Engine start/stop condition
Push-button ignition switch
operation frequency
Selector lever position Brake pedal operation condition
OFF → ACC — Not depressed 1
OFF → ACC → ON — Not depressed 2
OFF → ACC → ON → OFF — Not depressed 3
OFF → START
ACC → START
ON → START P or N position Depressed 1
Engine is running → OFF — — 1
Power supply position Engine start/stop condition
Push-button ignition switch
operation frequency
Selector lever position Brake pedal operation condition
Engine is running → ACC — — Emergency stop operation
Engine stall return operation
while driving N position Not depressed 1
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM