2010 INFINITI QX56 light

BCS-8
< FUNCTION DIAGNOSIS >[BCM]
COMBINATION SWITCH READING SYSTEM
Combination switch circuit
Combination switch INPUT-OUTPUT system list
NOTE:
Headlamp has a dual system switch.
COMBINATION SWITCH READING FUNCTION
Description
• BCM reads the status of the combination switch at 10 ms interval normally.
NOTE:
BCM reads the status of the combination switch at 20 ms interval when BCM is controlled at low power con-
sumption control mode.
• BCM operates as follows and judges the status of the combination switch.
- INPUT 1 - 5 outputs the voltage waveforms of 5 systems simultaneously.
- It operates the transistor on OUTPUT side in the following order: OUTPUT 5 → 4 → 3 → 2 → 1.
System OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 OUTPUT 5
INPUT 1 —FR WASHER FR WIPER LOW TURN LH TURN RH
INPUT 2 FR WIPER HI —FR WIPER INT PASSING HEADLAMP 1
INPUT 3 INT VOLUME 1 RR WASHER —HEADLAMP 2 HI BEAM
INPUT 4 RR WIPER INT INT VOLUME 3 AUTO LIGHT —TAIL LAMP
INPUT 5 INT VOLUME 2 RR WIPER —FR FOG —
LIIA0760E
JPMIA0067GB
Revision: April 20092010 QX56

BCS
COMBINATION SWITCH READING SYSTEMBCS-11
< FUNCTION DIAGNOSIS > [BCM]
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1. BCM M18, M19, M20 (view with in-
strument panel removed) 2. Combination switch (lighting and
turn signal switch) M28 3. Combination switch (wiper and
washer switch) M28
Revision: April 20092010 QX56

BCS-14
< FUNCTION DIAGNOSIS >[BCM]
POWER CONSUMPTION CONTROL SYSTEM
Sleep condition
Wake-up operation
• BCM transmits sleep wake up signal (wake up) to each unit when any condition listed below is established,
and then goes into normal mode from low power consumption mode.
• Each unit starts transmissions with CAN communication by receiving sleep wake up signals. Each unit trans- mits wake up signals to BCM with CAN communication to convey the start of CAN communication.
Wake-up condition
CAN sleep condition BCM sleep condition
• Receiving the sleep-ready signal (ready) from all units
• Ignition switch: OFF
• Vehicle security system alarm: No operation
• Warning lamp: No operation
• Warning chime: No operation
• Stop lamp switch: OFF
• Key switch status: No change for 2 seconds
• Hazard warning lamp: No operation
•Exterior lamp: OFF
• Door lock status: No change for 2 seconds
• CONSULT-III communication status: No communication
• Door switch status: No change for 2 seconds The controls only BCM are completed.
(Interior room lamp battery saver: Time out etc.)
BCM wake-up condition
• Ignition switch: OFF → ACC or ON
• Stop lamp switch: ON (Depress brake pedal)
• Any door switch: OFF → ON
• Lighting switch: OFF → 1ST or PASS
• Hazard switch: OFF → ON
• Back door opener switch OFF → ON
• Remote keyless entry receiver: Receiving
• Intelligent Key unit: Receiving
Revision: April 20092010 QX56

BCS-18
< FUNCTION DIAGNOSIS >[BCM]
DIAGNOSIS SYSTEM (BCM)
REAR WINDOW DEFOGGER : CONSULT-III Function (BCM - REAR DEFOGGER)
INFOID:0000000005146397
DATA MONITOR
ACTIVE TEST
BUZZER
BUZZER : CONSULT-III Function (BCM - BUZZER)INFOID:0000000005146398
DATA MONITOR
ACTIVE TEST
INT LAMP
Monitor Item
[Unit] Description
IGN ON SW [ON/OFF] Indicates condition of ignition switch in ON position
ACC ON SW [ON/OFF] Indicates condition of ignition switch in ACC position
REAR DEF SW [ON/OFF] Displays “Press (ON)/other (OFF)” stat us determined with the rear window defogger switch
Test ItemDescription
REAR DEFOGGER This test is able to check rear window defogger operation. Rear window defogger operates
when ’ON" on CONSULT-III screen is touched
Monitor Item
[Unit] Description
IGN ON SW [ON/OFF] Ignition switch (ON) st atus judged by ignition power supply input
KEY ON SW [ON/OFF] Key switch status
DOOR SW -DR [ON/OFF] Front door switch (driver side) status judged by BCM
LIGHT SW 1ST [ON/OFF] Lighting switch status judged by the lighting switch signal read with combination switch reading func-
tion
BUCKLE SW [ON/OFF] Seat belt buckle switch status
Test Item Description
LIGHT WARN ALM The light reminder warning operation can be checked by operating the relevant function (On/Off).
IGN KEY WARN ALM The key reminder warning operation can be checked by operating the relevant function (On/Off).
SEAT BELT WARN TEST The seat belt warning operation can be checked by operating the relevant function (On/Off).
DOOR WARNING IND The door open warning operation can be checked by operating the relevant function (On/Off).
Revision: April 20092010 QX56

BCS-22
< FUNCTION DIAGNOSIS >[BCM]
DIAGNOSIS SYSTEM (BCM)
HEADLAMP : CONSULT-III Function (BCM - HEAD LAMP)
INFOID:0000000005146401
WORK SUPPORT
*: Initial setting
DATA MONITOR
ACTIVE TEST
Work Item Setting item Setting
BATTERY SAVER SET ON* With the exterior lamp battery saver function
OFF Without the exterior lamp battery saver function
CUSTOM A/LIGHT SET-
TING MODE1* Normal
MODE2 More sensitive setting than normal setting (Turns ON earlier than normal operation.)
MODE3 More sensitive setting than MODE 2 (Turns ON earlier than MODE 2.)
MODE4 Less sensitive setting than normal setting (Turns ON later than normal operation.)
ILL DELAY SET MODE1* 45 sec.
Sets delay timer function timer operation time
(All doors closed)
MODE2
Without the func-
tion
MODE3 30 sec.
MODE4 60 sec.
MODE5 90 sec.
MODE6 120 sec.
MODE7 150 sec.
MODE8 180 sec.
Monitor Item [Unit] Description
IGN ON SW [ON/OFF] Ignition switch (ON) status judged from IGN signal (ignition power supply)
ACC ON SW [ON/OFF] Ignition switch (ACC) status judged from ACC signal (accessory power supply)
HI BEAM SW [ON/OFF]
Each switch status that BCM judges from the combination switch reading function
HEAD LAMP SW 1 [ON/OFF]
HEAD LAMP SW 2 [ON/OFF]
LIGHT SW 1ST [ON/OFF]
AUTO LIGHT SW [ON/OFF]
PASSING SW [ON/OFF]
FR FOG SW [ON/OFF]
TURN SIGNAL R [ON/OFF]
TURN SIGNAL L [ON/OFF]
DOOR SW-DR [ON/OFF]
The switch status input from front door switch LH
DOOR SW-AS [ON/OFF] The switch status input from front door switch RH
DOOR SW-RR [ON/OFF] The switch status input from rear door switch RH
DOOR SW-RL [ON/OFF] The switch status input from rear door switch LH
BACK DOOR SW [ON/OFF] The switch status input from back door switch
CARGO LAMP SW [ON/OFF] Cargo lamp status that BCM judges from the vehicle condition
OPTICAL SENSOR [ON/OFF] The value of exterior brightness voltage input from the optical sensor
Revision: April 20092010 QX56

BCS
DIAGNOSIS SYSTEM (BCM)BCS-23
< FUNCTION DIAGNOSIS > [BCM]
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WIPER
WIPER : CONSULT-III Function (BCM - WIPER)INFOID:0000000005146402
WORK SUPPORT
*: Factory setting
DATA MONITOR
Test Item
Operation Description
TAIL LAMP ON
Transmits the position light request signal to IPDM E/R with CAN com-
munication to turn the tail lamp ON.
OFF Stops the tail lamp request signal transmission.
HEAD LAMP HI
Transmits the high beam request signal with CAN communication to turn
the headlamp (HI).
LO Transmits the low beam request signal with CAN communication to turn
the headlamp (LO).
OFF Stops the high & low beam request signal transmission.
FR FOG LAMP ON
Transmits the front fog lights request signal to IPDM E/R with CAN com-
munication to turn the front fog lamp ON.
OFF Stops the front fog lights request signal transmission.
CARGO LAMP ON
Transmits the cargo lamp request signal with CAN communication to
turn the lamp ON.
OFF Stops the cargo lamp request signal transmission.
CORNERING LAMP LH
Transmits the LH cornering lamp request signal with CAN communica-
tion to turn the lamp ON.
RH Transmits the RH cornering lamp request signal with CAN communica-
tion to turn the lamp ON.
OFF Stops the day time running light request signal transmission.
Work Item Setting
Item Description
WIPER SPEED
SETTING ON*
With vehicle speed
(Front wiper intermittent time linked with the vehicle speed and wiper intermittent dial position)
OFF Without vehicle speed
(Front wiper intermittent time linked with the wiper intermittent dial position)
Monitor Item
[Unit] Description
IGN ON SW [ON/OFF] Ignition switch ON status judged from ignition power supply
IGN SW CAN [ON/OFF] Ignition switch ON status received from IPDM E/R via CAN communication
FR WIPER HI [ON/OFF]
Each switch status that BCM judges from the combination switch reading function
FR WIPER LOW [ON/OFF]
FR WIPER INT [ON/OFF]
FR WASHER SW [ON/OFF]
INT VOLUME [1 - 7]
Each switch status that BCM judges from the combination switch reading function
FR WIPER STOP [ON/OFF] Front wiper motor (stop position) status received from IPDM E/R with CAN communica-
tion
VEHICLE SPEED [km/h] The value of the vehicle speed signal received from combination meter with CAN com-
munication
Revision: April 20092010 QX56

BCS
DIAGNOSIS SYSTEM (BCM)BCS-25
< FUNCTION DIAGNOSIS > [BCM]
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INTELLIGENT KEY
INTELLIGENT KEY : CONSULT-III Fu
nction (BCM - INTELLIGENT KEY)INFOID:0000000005146405
DATA MONITOR
COMB SW
COMB SW : CONSULT-III Function (BCM - COMB SW)INFOID:0000000005146406
DATA MONITOR
Monitor Item
[Unit] Condition
I-KEY LOCK [ON/OFF] Indicates condition of lock signal from Intelligent Key
I-KEY UNLOCK [ON/OFF] Indicates [condition of unlock signal from Intelligent Key
I-KEY TRUNK [ON/OFF] Indicates condition of trunk open signal fr om Intelligent Key
I-KEY PW DWN [ON/OFF] Indicates condition of all power window signal from Intelligent Key
I-KEY PANIC [ON/OFF] Indicates condition of panic signal from Intelligent Key
PUSH SW [ON/OFF] Indicates condition of ignition knob switch
Monitor Item
[Unit] Description
TURN SIGNAL R
[OFF/ON] Displays the status of the TURN RH switch in combination switch judged by BCM with the combination switch
reading function
TURN SIGNAL L
[OFF/ON] Displays the status
of the TURN LH switch in co mbination switch judged by BCM with the combination switch
reading function
HI BEAM SW
[OFF/ON] Displays the status of the HI BEAM sw
itch in combination switch judged by BCM with the combination switch
reading function
HEAD LAMP SW1
[OFF/ON] Displays the status of the HEADLAMP switch in combination switch judged by BCM with the combination
switch reading function
HEAD LAMP SW2
[OFF/ON] Displays the status of the HEADLAMP switch in combination switch judged by BCM with the combination
switch reading function
LIGHT SW 1ST
[OFF/ON] Displays the status of the HEADLAMP switch in combination switch judged by BCM with the combination
switch reading function
PA S S I N G S W
[OFF/ON] Displays the status of the PASSING sw
itch in combination switch judged by BCM with the combination switch
reading function
AUTO LIGHT SW
[OFF/ON] Displays the status of the AUTO LIGHT switch in combination switch judged by BCM with the combination
switch reading function
FR FOG SW
[OFF/ON] Displays the status of the FR FOG switch in combination switch judged by BCM with the combination switch
reading function
FR WIPER HI
[OFF/ON] Displays the status of the FR WIPER HI switch in combination switch judged by BCM with the combination
switch reading function
FR WIPER LOW
[OFF/ON] Displays the status of the FR WIPER LOW switch in combination switch judged by BCM with the combination
switch reading function
FR WIPER INT
[OFF/ON] Displays the status of the FR WIPER INT switch in combination switch judged by BCM with the combination
switch reading function
FR WASHER SW
[OFF/ON] Displays the status of the FR WASHER switch in combination switch judged by BCM with the combination
switch reading function
INT VOLUME
[1 - 7] Displays the status of wiper intermittent dial position judged by BCM with the combination switch reading
function
RR WIPER ON
[OFF/ON] Displays the status of the RR WIPER switch in combination switch judged by BCM with the combination
switch reading function
Revision: April 20092010 QX56

BCS-38
< COMPONENT DIAGNOSIS >[BCM]
COMBINATION SWITCH
COMBINATION SWITCH
DescriptionINFOID:0000000005146426
COMBINATION SWITCH MATRIX
Combination switch consists of INPUT circuit and OUTPUT circuit.
Combination switch circuit
Combination switch INPUT-OUTPUT system list
NOTE:
Headlamp has a dual system switch.
Diagnosis ProcedureINFOID:0000000005146427
1. CHECK LIGHT & TURN SIGNAL SWITCH
Check operation with normal light and turn signal switch installed.
Does it operate normally?
YES >> Replace light and turn signal switch. Refer to EXL-154, "Removal and Installation".
NO >> GO TO 2
2. CHECK WIPER & WASHER SWITCH
Check operation with normal wiper and washer switch installed.
Does it operate normally?
YES >> Replace wiper and washer switch. Refer to WW-85, "Wiper and Washer Switch".
SystemOUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 OUTPUT 5
INPUT 1 —FR WASHER FR WIPER LOW TURN LH TURN RH
INPUT 2 FR WIPER HI —FR WIPER INT PASSING HEADLAMP 1
INPUT 3 INT VOLUME 1 RR WASHER —HEADLAMP 2 HI BEAM
INPUT 4 RR WIPER INT INT VOLUME 3 AUTO LIGHT —TAIL LAMP
INPUT 5 INT VOLUME 2 RR WIPER —FR FOG —
LIIA0760E
Revision: April 20092010 QX56