2011 INFINITI QX56 relay

BCS
DIAGNOSIS SYSTEM (BCM)BCS-17
< SYSTEM DESCRIPTION >
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REAR WINDOW DEFOGGER : CONSULT-III
Function (BCM - REAR DEFOGGER)
INFOID:0000000006376460
Data monitor
ACTIVE TEST
BUZZER
BUZZER : CONSULT-III Function (BCM - BUZZER)INFOID:0000000006376483
CONSULT-III APPLICATION ITEMS
DATA MONITOR
ACTIVE TEST
INT LAMP
Monitor Item Description
REAR DEF SW Displays “Press (ON)/other (OFF)” status determined with the rear window defogger switch.
PUSH SW Indicates [ON/OFF] condition of push switch.
Test Item Description
REAR DEFOGGER Give a drive signal to the re ar window defogger relay to activate it.
Test item Diagnosis mode Description
BUZZER Data Monitor Displays BCM input data in real time.
Active Test Operation of electrical loads can be checked by sending driving signal to them.
Display item
[Unit] Description
PUSH SW
[On/Off] Status of push-button ignition switch judged by BCM.
UNLK SEN-DR
[On/Off] Status of unlock sensor judged by BCM.
VEH SPEED 1
[km/h] Value of vehicle speed signal received from combination meter with CAN communication line.
TAIL LAMP SW
[On/Off] Status of lighting switch judged by BCM using the combination switch readout function.
FR FOG SW
[On/Off] Status of front fog lamp switch judged by BCM using the combination switch readout function.
DOOR SW-DR
[On/Off] Status of driver side door switch judged by BCM.
CDL LOCK SW
[On/Off] Status of door lock unlock switch judged by BCM.
Display item
[Unit] Description
SEAT BELT WARN TEST The seat belt warning chime operation can be checked by operating the relevant function (On/Off).
LIGHT WARN ALM The light warning chime operation can be checked by operating the relevant function (On/Off).
Revision: 2010 May2011 QX56

BCS
DIAGNOSIS SYSTEM (BCM)BCS-25
< SYSTEM DESCRIPTION >
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SELF-DIAG RESULT
Refer to
BCS-57, "DTCIndex".
DATA MONITOR
SHORT CRANKING OUTPUT Starter motor can operate during the times below
 70 msec
100 msec
200 msec
CONFIRM KEY FOB ID It can be checked wh ether Intelligent Key ID code is registered or not in this mode
AUTO LOCK SET Auto door lock operation time can be changed in this mode
 MODE 1: OFF
 MODE 2: 30 sec
 MODE 3: 1 minute
 MODE 4: 2 minutes
 MODE 5: 3 minutes
 MODE 6: 4 minutes
 MODE 7: 5 minutes
HORN WITH KEYLESS LOCK Horn reminder function mode by Intelligent Key button can be selected from the following with
this mode
 On: Operate
 Off: Non-operation
PW DOWN SET Unlock button pressing time on Intelligent Key button can be selected from the following with
this mode
 MODE 1: 3 sec
 MODE 2: Non-operation
 MODE 3: 5 sec
WELCOME LIGHT SELECT Welcome light function mode can be selected from the following with this mode
 Puddle/Outside Handle
Room lamp
 Head & Tail Lamps (this item is displayed, but cannot be used)
 Heart Beat
WELCOME LIGHT OP SET Welcome light function mode can be changed to operation with this mode
 On: Operate
 Off: Non-operation
Monitor item Description
Monitor Item Condition
REQ SW -DR Indicates [On/Off] condition of door request switch (driver side)
REQ SW -AS Indicates [On/Off] condition of door request switch (passenger side)
REQ SW -BD/TR Indicates [On/Off] condition of back door request switch
PUSH SW Indicates [On/Off] condition of push-button ignition switch
CLUTCH SW NOTE:
This item is displayed, but cannot be monitored
BRAKE SW 1 Indicates [On/Off]* conditio n of stop lamp switch power supply
BRAKE SW 2 Indicates [On/Off] co ndition of stop lamp switch
DETE/CANCL SW Indicates [On/Off] condition of P position
SFT PN/N SW Indicates [On/Off] condition of P or N position
S/L -LOCK Indicates [On/Off] condition of steering lock unit (LOCK)
S/L -UNLOCK Indicates [On/Off] condition of steering lock unit (UNLOCK)
S/L RELAY -F/B Indicates [On/Off] condition of steering lock relay
UNLK SEN -DR Indicates [On/Off] condition of driver door UNLOCK status
PUSH SW -IPDM Indicates [On/Off] condition of push-button ignition switch
IGN RLY1 -F/B Indicates [On/Off] condition of ignition relay 1
DETE SW -IPDM Indicates [On/Off] condition of P position
Revision: 2010 May2011 QX56

BCS-26
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
*: OFF is displayed when brake pedal is depressed while brake switch power supply is OFF.
ACTIVE TEST
SFT PN -IPDM Indicates [On/Off] condition of P or N position
SFT P -MET Indicates [On/Off] condition of P position
SFT N -MET Indicates [On/Off] condition of N position
ENGINE STATE Indicates [Stop/Stall/Crank/Run] condition of engine states
S/L LOCK-IPDM Indicates [On/Off] condition of steering lock unit (LOCK)
S/L UNLK-IPDM Indicates [On/Off] condition of steering lock unit (UNLOCK)
S/L RELAY-REQ Indicates [On/Off] condition of steering lock relay
VEH SPEED 1 Display the vehicle speed signal received from combination meter by numerical value [Km/h]
VEH SPEED 2 Display the vehi cle speed signal received from ABS or VDC or TCM by numerical value [Km/h]
DOOR STAT-DR Indicates [LOCK/READY/UNLK] condition of unlock sensor
DOOR STAT-AS Indicates [LOCK/READY/UNLK] condition of passenger side door status
ID OK FLAG Indicates [Set/Reset] condition of key ID
PRMT ENG STRT Indicates [Set/Reset] condition of engine start possibility
PRMT RKE STRT NOTE:
This item is displayed, but cannot be monitored
TRNK/HAT MNTR NOTE:
This item is displayed, but cannot be monitored
RKE-LOCK Indicates [On/Off] condition of LOCK signal from Intelligent Key
RKE-UNLOCK Indicates [On/Off] condition of UNLOCK signal from Intelligent Key
RKE-TR/BD NOTE:
This item is displayed, but cannot be monitored
RKE-PANIC Indicates [On/Off] condition of PANIC button of Intelligent Key
RKE-MODE CHG Indicates [On/Off] condition of MODE CHANGE signal from Intelligent Key
RKE OPE COUN1 When remote keyless entry receiver receives the signal transmitted while operating on Intelli-
gent Key, the numerical value start changing
RKE OPE COUN2 NOTE:
This item is displayed, but cannot be monitored
Monitor Item Condition
Test item Description
BATTERY SAVER This test is able to check interior room lamp operation
 On: Operate
 Off: Non-operation
OUTSIDE BUZZER This test is able to check Intelligent Key warning buzzer operation
 On: Operate
 Off: Non-operation
INSIDE BUZZER This test is able to check warning chime in combination meter operation
 Take Out: Take away warning chime sounds when CONSULT-III screen is touched
 Key: Key warning chime sounds when CONSULT-III screen is touched
 Knob: OFF position warning chime sounds when CONSULT-III screen is touched
 Off: Non-operation
INDICATOR This test is able to check warning lamp operation
 KEY ON: “KEY” Warning lamp
illuminates when CONSULT-III screen is touched
 KEY IND: “KEY” Warning lamp blinks when CONSULT-III screen is touched
 Off: Non-operation
INT LAMP This test is able to check interior room lamp operation
 On: Operate
 Off: Non-operation
Revision: 2010 May2011 QX56

BCS
BCM
BCS-35
< ECU DIAGNOSIS INFORMATION >
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OPTICAL SENSOR
NOTE:
The item is indicated, but not monitored. Off
RAIN SENSOR No rain (or very light rain) Off
Light rain
LOW
Heavy rain HIGH
When liquid is splashed on the front window SPLSH
Rain sensor internal error NG
REQ SW -DR Driver door request switch is not pressed Off
Driver door request switch is pressed On
REQ SW -AS Passenger door request switch is not pressed Off
Passenger door request switch is pressed On
REQ SW -RR NOTE:
The item is indicated, but not monitored.
Off
REQ SW -RL NOTE:
The item is indicated, but not monitored. Off
REQ SW -BD/TR Back door request switch is not pressed Off
Back door request switch is pressed On
PUSH SW Push-button ignition switch (push switch) is not pressed Off
Push-button ignition switch (push switch) is pressed On
CLUCH SW NOTE:
The item is indicated, but not monitored. Off
BRAKE SW 1 The brake pedal is not depressed Off
The brake pedal is depressed On
BRAKE SW 2 The brake pedal is depressed when No. 7 fuse is blown Off
The brake pedal is not depressed when No. 7 fuse is blown, or No. 7 fuse
is normal
On
DETE/CANCL SW Selector lever in P position Off
Selector lever in any position other than P On
SFT PN/N SW Selector lever in any position other than P and N Off
Selector lever in P or N position On
S/L -LOCK Steering is locked Off
Steering is unlocked On
S/L -UNLOCK Steering is unlocked Off
Steering is locked On
S/L RELAY-F/B Steering is unlocked Off
Steering is locked On
UNLK SEN -DR Driver door is locked Off
Driver door is unlocked On
PUSH SW -IPDM Push-button ignition switch (push-switch) is not pressed Off
Push-button ignition switch (push-switch) is pressed On
IGN RLY1 -F/B Ignition switch in OFF or ACC position Off
Ignition switch in ON position On
DETE SW -IPDM Selector lever in any position other than P Off
Selector lever in P position On
SFT PN -IPDM Selector lever in any position other than P and N Off
Selector lever in P or N position On
Monitor Item Condition Value/Status
Revision: 2010 May2011 QX56

BCS-36
< ECU DIAGNOSIS INFORMATION >
BCM
SFT P -METSelector lever in any position other than P Off
Selector lever in P position On
SFT N -MET Selector lever in any position other than N Off
Selector lever in N position On
ENGINE STATE Engine stopped Stop
While the engine stalls Stall
At engine cranking Crank
Engine running Run
S/L LOCK-IPDM Steering is locked Off
Steering is unlocked On
S/L UNLK-IPDM Steering is unlocked Off
Steering is locked On
S/L RELAY-REQ Steering is unlocked Off
Steering is locked On
VEH SPEED 1 While driving Equivalent to speed-
ometer reading
VEH SPEED 2 While driving Equivalent to speed-
ometer reading
DOOR STAT-DR Driver door is locked LOCK
Wait with selective UNLOCK operation (60 seconds) READY
Driver door is unlocked UNLOCK
DOOR STAT-AS Passenger door is locked LOCK
Wait with selective UNLOCK operation (60 seconds) READY
Passenger door is unlocked UNLOCK
ID OK FLAG Steering is locked Reset
Steering is unlocked Set
PRMT ENG STRT The engine start is prohibited Reset
The engine start is permitted Set
PRMT RKE STRT NOTE:
The item is indicated, but not monitored.
Reset
RKE OPE COUN1 During the operation of the key Operation frequency
of the key
RKE OPE COUN2 NOTE:
The item is indicated, but not monitored. —
CONFRM ID ALL The key ID that the key slot receives is not recognized by any key ID reg-
istered to BCM.
Ye t
The key ID that the key slot receives is recognized by any key ID regis-
tered to BCM. Done
CONFIRM ID4 The key ID that the key slot receives is not recognized by the fourth key ID
registered to BCM.
Ye t
The key ID that the key slot receives is recognized by the fourth key ID reg-
istered to BCM. Done
CONFIRM ID3 The key ID that the key slot receives is not recognized by the third key ID
registered to BCM.
Ye t
The key ID that the key slot receives is recognized by the third key ID reg-
istered to BCM. Done
Monitor Item Condition Value/Status
Revision: 2010 May2011 QX56

BCS
BCM
BCS-53
< ECU DIAGNOSIS INFORMATION >
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90
(Y) Ground Push-button ignition
switch illumination OutputPush-button ig-
nition switch illu-
mination ON 12 V
OFF 0 V
91
(O) Ground LOCK indicator lamp Output LOCK indicator
lampOFF (Ignition switch OFF) Battery voltage
ON 0 V
92
(L) Ground Push-button ignition
switch illumination
ground Output Tail lamp OFF 0 V
ON
NOTE:
When the illumination brighten-
ing/dimming level is in the neutral position
6.0 - 7.0 V
93
(GR/R) GroundIntelligent Key warn-
ing buzzer
OutputIntelligent Key
warning buzzer Sounding 0 V
Not sounding 12 V
94
(Y/G) Ground Steering lock unit
communication Input/
Output Steering lock LOCK status 12 V
LOCK or UNLOCK
For 15 seconds after UN-
LOCK
12 V
15 seconds or later after
UNLOCK 0 V
95
(W) Ground
Steering lock unit
power supply Output Ignition switch OFF or ACC 12 V
ON 0 V
96
(BR) Ground ACC relay control Output Ignition switch OFF 0 V
ACC or ON 12 V
97
(R/W) Ground Starter relay control Output Ignition switch
ONWhen selector lever is in
P or N position
12 V
When selector lever is not
in P or N position 0 V
98
(O) Ground Ignition relay (IPDM
E/R) control
Output Ignition switch OFF or ACC 12 V
ON 0 V
99
(R) Ground Ignition relay-1 con-
trol
Output Ignition switch OFF or ACC 0 V
ON 12 V
100
(SB) Ground
Push-button ignition
switch (push switch) InputPush-button ig-
nition switch
(push switch) Pressed 0 V
Not pressed 12 V
101
(W/B) Ground Ignition power sup-
ply No. 2 Output Ignition switch OFF or ACC 0 V
ON 12 V
Terminal No.
(Wire color) Description
Condition Va l u e
(Approx.)
Signal name Input/
Output
+ −
JPMIA1554GB
JMKIA0066GB
Revision: 2010 May2011 QX56

BCS
BCM
BCS-55
< ECU DIAGNOSIS INFORMATION >
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B2603: SHIFT POSI STATUS Inhibit steering lock
500 ms after any of the following BCM recognition conditions are fulfilled
Status 1
- Ignition switch is in the ON position
- Selector lever P position switch signal: Except P position (12 V)
- Selector lever P/N position signal: Except P and N positions (0 V)
Status 2
- Ignition switch is in the ON position
- Selector lever P position switch signal: P position (0 V)
- Selector lever P/N position signal: P or N positions (12 V)
B2604: PNP/CLUTCH SW Inhibit steering lock 500 ms after any of the following BCM recognition conditions are fulfilled
Status 1
- Ignition switch is in the ON position
- Selector lever P/N position signal: P or N position (12 V)
- Shift position signal (CAN): P or N position
Status 2
- Ignition switch is in the ON position
- Selector lever P/N position signal: Except P and N positions (0 V)
- Shift position signal (CAN): Except P and N position
B2605: PNP/CLUTCH SW Inhibit steering lock 500 ms after any of the following BCM recognition conditions are fulfilled
Status 1
- Power position: IGN
- Selector lever P/N position signal: Except P and N positions (0 V)
- Interlock/PNP switch signal (CAN): OFF
Status 2
- Ignition switch is in the ON position
- Selector lever P/N position signal: P or N position (12 V)
- Interlock/PNP switch signal (CAN): ON
B2608: STARTER RELAY Inhibit engine cranking 500 ms after the following signal communication status becomes con-
sistent
 Starter motor re
lay control signal
 Starter relay status signal (CAN)
B2609: S/L STATUS  Inhibit engine crank-
ing
 Inhibit steering lock When the following steering lock conditions agree
 BCM steering lock control status
 Steering lock condition No. 1 signal status
 Steering lock condition No. 2 signal status
B260B: STEERING LOCK UNIT Inhibit steering lock Erase DTC
B260D: STEERING LOCK UNIT Inhibit steering lock Erase DTC
B260F: ENG STATE SIG LOST Inhibit engine cranking When any of the following conditions are fulfilled
 Power position changes to ACC
 Receives engine status signal (CAN)
B2612: S/L STATUS  Inhibit engine crank-
ing
 Inhibit steering lock When any of the following conditions are fulfilled
 Steering lock unit status signal (CAN) is received normally
 The BCM steering lock control status matches the steering lock status
recognized by the steering lock unit status signal (CAN from IPDM E/
R)
B2619: BCM Inhibit engine cranking 1 second after the steering lock unit power supply output control inside
BCM becomes normal
B26EF: STRG LCK RELAY OFF Inhibit engine cranking When the following conditions are fulfilled
 Steering lock relay signal (CAN): ON
 Steering lock unit status signal (CAN): ON
B26F0: STRG LCK RELAY ON Inhibit engine cranking When the following conditions are fulfilled
 Steering lock relay signal (CAN): OFF
 Steering lock unit status signal (CAN): OFF
B26F1: IGN RELAY OFF Inhibit engine cranking When the following conditions are fulfilled
 Ignition switch ON signal (CAN: Transmitted from BCM): ON
 Ignition switch ON signal (CAN: Transmitted from IPDM E/R): ON
B26F2: IGN RELAY ON Inhibit engine cranking When the following conditions are fulfilled
 Ignition switch ON signal (CAN: Transmitted from BCM): OFF
 Ignition switch ON signal (CAN: Transmitted from IPDM E/R): OFF
Display contents of CONSULT Fail-safe Cancellation
Revision: 2010 May2011 QX56

BCS-56
< ECU DIAGNOSIS INFORMATION >
BCM
FAIL-SAFE CONTROL BY RAIN SENSOR MALFUNCTION
BCM detects the light and rain sensor serial link error and the rain sensor malfunction.
BCM controls the following fail-safe when rain sensor has a malfunction.
 Front wiper switch AUTO and sensing rain drop: The condition just before the activation of fail-safe is main-
tained until the front wiper switch is turned OFF.
 Front wiper switch AUTO and not sensing rain drop: Front wiper is LO operation until the front wiper switch is
turned off.
REAR WIPER MOTOR PROTECTION
BCM detects the rear wiper stopping position acco rding to the rear wiper stop position signal.
When the rear wiper stop position signal does not c hange for more than 5 seconds while driving the rear
wiper, BCM stops power supply to protect the rear wiper motor.
Condition of cancellation
1. More than 1 minute is passed after the rear wiper stop.
2. Turn rear wiper switch OFF.
3. Operate the rear wiper swit ch or rear washer switch.
FAIL-SAFE CONTROL OF COMBINATION SWITCH READING FUNCTION CAUSED BY LOW
POWER SUPPLY VOLTAGE
If voltage of battery power supply lower, BCM maintain s combination switch reading to the status when input
voltage is less than approximately 9 V.
NOTE:
When voltage of battery power supply is approximately 9 V or more, combination switch reading function
returns to normal operation.
DTC Inspection Priority ChartINFOID:0000000006274821
If some DTCs are displayed at the same time, perfo rm inspections one by one based on the following priority
chart.
B26F3: START CONT RLY ON Inhibit engine cranking When the following conditions are fulfilled
 Starter control relay signal (CAN: Transmitted from BCM): OFF
 Starter control relay signal (CAN: Transmitted from IPDM E/R): OFF
B26F4: START CONT RLY OFF Inhibit engine cranking When the following conditions are fulfilled
 Starter control relay signal (CAN: Transmitted from BCM): ON
 Starter control relay signal (CAN: Transmitted from IPDM E/R): ON
B26F7: BCM Inhibit engine cranking
by Intelligent Key sys-
temWhen room antenna and luggage room antenna functions normally
U0415: VEHICLE SPEED Inhibit steering lock When vehicle speed signal (Meter) (CAN) is received normally
Display contents of CONSULT Fail-safe Cancellation
Priority DTC
1 B2562: LOW VOLTAGE
2  U1000: CAN COMM
 U1010: CONTROL UNIT (CAN)
3  B2192: ID DISCORD BCM-ECM
 B2193: CHAIN OF BCM-ECM
 B2195: ANTI-SCANNING
 B2198: NATS ANTENNA AMP
Revision: 2010 May2011 QX56