display INFINITI QX56 2011 Factory Service Manual

BCS-30
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
ACTIVE TEST
*: Each lamp switch is in ON position.
TRUNK
TRUNK : CONSULT-III Function (BCM - TRUNK)INFOID:0000000006376456
DATA MONITOR
THEFT ALM
THEFT ALM : CONSULT-III Function (BCM - THEFT)INFOID:0000000006376457
DATA MONITOR
KEY CYL UN-SW
[On/Off] Unlock switch status received from door key cylinder switch
TRNK/HAT MNTR
[On/Off] NOTE:
The item is indicated, but not monitored.
RKE-LOCK
[On/Off] Lock signal status received from remote keyless entry receiver
RKE-UNLOCK
[On/Off] Unlock signal status received from remote keyless entry receiver
Monitor item
[Unit] Description
Test item Operation Description
BATTERY SAVER Off Cuts the interior room lamp power supply to turn interior room lamps OFF.
On Outputs the interior room lamp power supply to turn interior room lamps ON.*
Monitor Item Contents
PUSH SW Indicates [On/Off] condition of push switch
UNLK SEN -DR Indicates [On/Off] condition of unlock sensor
VEH SPEED 1 Indicates [Km/h] condition of ve hicle speed signal from combination meter
TR/BD OPEN SW Indicates [On/Off] condition of back door opener switch
TRNK/HAT MNTR NOTE:
This item is displayed, but cannot be monitored
RKE-TR/BD NOTE:
This item is displayed, but cannot be monitored
Monitored Item Description
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 -RR NOTE:
This item is displayed, but cannot be monitored.
REQ SW -RL NOTE:
This item is displayed, but cannot be monitored.
REQ SW -BD/TR Indicates [ON/OFF] condition of back door request switch.
PUSH SW Indicates [ON/OFF] condition of push-button ignition switch
UNLK SEN -DR Indicates [ON/OFF] condition of driver door UNLOCK status.
DOOR SW-DR Indicates [ON/OFF] condition of front door switch (driver side).
DOOR SW-AS Indicates [ON/OFF] condition of front door switch (passenger side).
DOOR SW-RR Indicates [ON/OFF] condition of rear door switch RH.
Revision: 2010 May2011 QX56

BCS
DIAGNOSIS SYSTEM (BCM)BCS-31
< SYSTEM DESCRIPTION >
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WORK SUPPORT
ACTIVE TEST
RETAIND PWR
RETAIND PWR : CONSULT-III F
unction (BCM - RETAINED PWR)INFOID:0000000006376459
Data monitor
SIGNAL BUFFER
SIGNAL BUFFER : CONSULT-III F unction (BCM - SIGNAL BUFFER)INFOID:0000000006274818
DATA MONITOR
DOOR SW-RL Indicates [ON/OFF] condition of rear door switch LH.
DOOR SW-BK Indicates [ON/OFF] condition of back door switch.
CDL LOCK SW Indicates [ON/OFF] condition of lock signal from door lock/unlock switch LH and RH.
CDL UNLOCK SW Indicates [ON/OFF] condition of unlock signal from door lock/unlock switch LH and RH.
KEY CYL LK-SW Indicates [ON/OFF] condition of lock signal from door key cylinder.
KEY CYL UN-SW Indicates [ON/OFF] condition of unlock signal from door key cylinder.
TR/BD OPEN SW Indicates [ON/OFF] condition of back door opener switch.
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.
Monitored Item Description
Service Item Description
SECURITY ALARM SET This mode is able to confirm and change security alarm ON-OFF setting.
THEFT ALM TRG The switch which triggered vehicle security alarm is recorded.
This mode is able to confirm and erase the record of vehicle security alarm.
The trigger data can be erased by touching “CLEAR” on CONSULT-III screen.
Test Item Description
THEFT IND This test is able to check security indicator lamp operation. Security indicator lamp is turned on
when “ON” on CONSULT-III screen is touched.
VEHICLE SECURITY HORN This test is able to check horn operation. Horn is activated for 0.5 seconds after “ON” on CONSULT-
III screen is touched.
HEADLAMP(HI) This test is able to check headlamp operation. Headlamps are activated for 0.5 seconds after “ON”
on CONSULT-III screen is touched.
FLASHER This test is able to check hazard warning lamp operation. Hazard warning lamps are activated after
“ON” on CONSULT-III screen is touched.
Monitor Item Description
DOOR SW-DR Indicates [ON/OFF] condition of driver side door switch.
DOOR SW-AS Indicates [ON/OFF] condition of passenger side door switch.
Monitor item [UNIT] Description
PUSH SW
[Off/On] Displays the status of the push-button ignition switch (push switch) judged by BCM.
Revision: 2010 May2011 QX56

BCS-54
< ECU DIAGNOSIS INFORMATION >
BCM
*: For Canada
Fail-safeINFOID:0000000006274820
FAIL-SAFE CONTROL BY DTC
BCM performs fail-safe control when any DTC are detected.
102
(BR) Ground P/N position Input Selector lever P or N position 12 V
Except P and N positions 0 V
104
(R/B) Ground A/T shift selector
(detention switch)
power supply Output Ignition switch ON 12 V
105
(O/L) Ground Stop lamp switch 2 Input Ignition switch OFF Battery voltage
106
(Y/G) Ground
Blower fan motor re-
lay control Output Ignition switch OFF or ACC 0 V
ON 12 V
107 (L) Ground
Steering lock condi-
tion No. 1 Input Steering lock LOCK status 0 V
UNLOCK status 12 V
108 (P) Ground
Steering lock condi-
tion No. 2 Input Steering lock LOCK status 12 V
UNLOCK status 0 V
109
(L/W) Ground ACC indicator lamp Output Ignition switch OFF (LOCK indicator is
not illuminated)
Battery voltage
ACC 0 V
Te r m i n a l N o .
(Wire color) Description
Condition Va l u e
(Approx.)
Signal name Input/
Output
+ −
Display contents of CONSULT Fail-safe Cancellation
B2013: ID DISCORD BCM-S/ L Inhibit engine cranking When communication between BCM and steering lock unit are commu-
nicated normally.
B2014: CHAIN OF S/L-BCM Inhibit engine cranking When communication between BCM and steering lock unit are commu-
nicated normally.
B2192: ID DISCORD BCM-ECM Inhibit engine cranking Erase DTC
B2193: CHAIN OF BCM-ECM Inhibit engine cranking Erase DTC
B2195: ANTI-SCANNING Inhibit engine cranking Ignition switch ON → OFF
B2198: NATS ANTENNA AMP Inhibit engine cranking Erase DTC
B2557: VEHICLE SPEED In hibit steering lockWhen the following CAN signal status (vehicle speed signal) becomes
consistent
 Vehicle speed signal (ABS)
 Vehicle speed signal (Meter)
B2601: SHIFT POSITION Inhibit steering lock 500 ms after the following signal reception status becomes consistent
 Selector lever P position switch signal
 P range signal (CAN)
B2602: SHIFT POSITION Inhibit steering lock 5 seconds after the following BCM recognition conditions are fulfilled
 Ignition switch is in the ON position
 Selector lever P position switch signal: Except P position (battery volt-
age)
 Vehicle speed: 4 km/h (2.5 MPH) or more
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

BCS
BCM
BCS-57
< ECU DIAGNOSIS INFORMATION >
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DTC IndexINFOID:0000000006274822
NOTE:
The details of time display are as follows.
 CRNT: A malfunction is detected now.
 PAST: A malfunction was detected in the past.
IGN counter is displayed on Freeze Frame Data. For details of Freeze Frame Data, refer to
BCS-14, "
COM-
MON ITEM : CONSULT-III Function (BCM - COMMON ITEM)".
4 B2013: ID DISCORD BCM-S/L
 B2014: CHAIN OF S/L-BCM
 B2555: STOP LAMP
 B2556: PUSH-BTN IGN SW
 B2557: VEHICLE SPEED
 B2601: SHIFT POSITION
 B2602: SHIFT POSITION
 B2603: SHIFT POSI STATUS
 B2604: PNP/CLUTCH SW
 B2605: PNP/CLUTCH SW
 B2608: STARTER RELAY
 B2609: S/L STATUS
 B260B: STEERING LOCK UNIT
 B260C: STEERING LOCK UNIT
 B260D: STEERING LOCK UNIT
 B260F: ENG STATE SIG LOST
 B2612: S/L STATUS
 B2614: BCM
 B2615: BCM
 B2616: BCM
 B2618: BCM
 B2619: BCM
 B261A: PUSH-BTN IGN SW
 B26E9: LOCK MALFUNCTION
 B26EF: STRG LCK RELAY OFF
 B26F0: STRG LCK RELAY ON
 B26F1: IGN RELAY OFF
 B26F2: IGN RELAY ON
 B26F3: START CONT RLY ON
 B26F4: START CONT RLY OFF
 B26F5: STRG LCK STS SW
B26F6: BCM
B26F7: BCM
B26F8: BCM
 B26F9: CRANK REQ CIR SHORT
 B26FA: CRANK REQ CIR OPEN
 B26FC: KEY REGISTRATION
 U0415: VEHICLE SPEED
5  B2621: INSIDE ANTENNA
 B2622: INSIDE ANTENNA
 B2623: INSIDE ANTENNA
6  B2626: OUTSIDE ANTENNA
 B2627: OUTSIDE ANTENNA
 B2628: OUTSIDE ANTENNA
7 B26E7: TPMS CAN COMM
Priority DTC
Revision: 2010 May2011 QX56

BCS-58
< ECU DIAGNOSIS INFORMATION >
BCM
CONSULT display Fail-safeFreeze Frame Data
Vehicle Speed
Odo/Trip Meter
Vehicle Condition Intelligent Key warn-
ing lamp ON Reference
page
No DTC is detected.
further testing
may be required. ————
U1000: CAN COMM — — — BCS-70
U1010: CONTROL UNIT (CAN) — — —BCS-71
U0415: VEHICLE SPEED×— ×BCS-72
B2013: ID DISCORD BCM-S/L ××× SEC-69
B2014: CHAIN OF S/L-BCM××× SEC-70
B2192: ID DISCORD BCM-ECM×—— SEC-60
B2193: CHAIN OF BCM-ECM ×—— SEC-61
B2195: ANTI-SCANNING ×—— SEC-62
B2196: DONGLE NG ×—— SEC-63
B2198: NATS ANTENNA AMP ×—— SEC-65
B2555: STOP LAMP — ××SEC-73
B2556: PUSH-BTN IGN SW — ××SEC-76
B2557: VEHICLE SPEED ××× SEC-78
B2562: LOW VOLTAGE — ×—BCS-73
B2601: SHIFT POSITION ××× SEC-79
B2602: SHIFT POSITION××× SEC-82
B2603: SHIFT POSI STATUS××× SEC-85
B2604: PNP/CLUTCH SW××× SEC-89
B2605: PNP/CLUTCH SW××× SEC-91
B2608: STARTER RELAY××× SEC-93
B2609: S/L STATUS××× SEC-95
B260B: STEERING LOCK UNIT××× SEC-98
B260C: STEERING LOCK UNIT — ××SEC-99
B260D: STEERING LOCK UNIT ××× SEC-100
B260F: ENG STATE SIG LOST××× SEC-101
B2612: S/L STATUS××× SEC-102
B2614: BCM — ××PCS-56
B2615: BCM — ××PCS-59
B2616: BCM — ××PCS-61
B2618: BCM — ××PCS-63
B2619: BCM ××× SEC-105
B261A: PUSH-BTN IGN SW — ××PCS-64
B2621: INSIDE ANTENNA — ×—DLK-104
B2622: INSIDE ANTENNA — ×—DLK-106
B2623: INSIDE ANTENNA — ×—DLK-108
B2626: OUTSIDE ANTENNA — ×—DLK-110
B2627: OUTSIDE ANTENNA — ×—DLK-112
B2628: OUTSIDE ANTENNA — ×—DLK-114
B26E7: TPMS CAN COMM — — — BCS-74
Revision: 2010 May2011 QX56

BCS
BCM
BCS-59
< ECU DIAGNOSIS INFORMATION >
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B26E9: LOCK MALFUNCTION —
××
(Turn ON for 15 sec-
onds) SEC-106
B26EF: STRG LCK RELAY OFF
××× SEC-107
B26F0: STRG LCK RELAY ON××× SEC-109
B26F1: IGN RELAY OFF××× PCS-66
B26F2: IGN RELAY ON××× PCS-68
B26F3: START CONT RLY ON××× SEC-111
B26F4: START CONT RLY OFF××× SEC-112
B26F5: STRG LCK STS SW — ××SEC-113
B26F6: BCM — ××PCS-70
B26F7: BCM ××× SEC-116
B26F8: BCM — ××SEC-117
B26F9: CRANK REQ CIR SHORT — ××SEC-118
B26FA: CRANK REQ CIR OPEN — ××SEC-120
B26FC: KEY REGISTRATION — ××SEC-122
CONSULT display Fail-safe Freeze Frame Data
Vehicle Speed
Odo/Trip Meter
Vehicle Condition Intelligent Key warn-
ing lamp ON Reference
page
Revision: 2010 May2011 QX56

BCS-68
< BASIC INSPECTION >
INSPECTION AND ADJUSTMENT
Configuration has three functions as follows.
NOTE:
Manual setting item: Items which need selection by vehicle specifications
Automatic setting item: Items which are written in automatically (Setting can not be changed)
CAUTION:
 When replacing BCM, you must perform “WRITE CONFIGURATION” with CONSULT-III.
 Complete the procedure of “WRITE CONFIGURATION” in order.
 If you set incorrect “WRITE CONF IGURATION”, incidents might occur.
 Configuration is different for each vehicle mode l. Confirm configuration of each vehicle model.
 Never perform “WRITE CONFIGURATION” except for new BCM.
CONFIGURATION (BCM) : Work ProcedureINFOID:0000000006324911
1.WRITING MODE SELECTION
CONSULT-III Configuration
Select “CONFIGURATION” of BCM.
When writing saved data>>GO TO 2.
When writing manually>>GO TO 3.
2.PERFORM “WRITE CONFIGURATION - CONFIG FILE”
CONSULT-III Configuration
Perform “WRITE CONFIGURATION - Config file”.
>> WORK END
3.PERFORM “WRITE CONFIGURATION - MANUAL SELECTION”
CONSULT-III Configuration
1. Select "WRITE CONFIGURA TION - Manual selection".
2. Identify the correct model and configuration list. Refer to BCS-69, "
CONFIGURATION (BCM) : Configura-
tion list".
3. Confirm and/or change setting value for each item. CAUTION:
 Thoroughly read and understan d the vehicle specification. Incorrect settings may result in
abnormal control of ECU.
 If items are not displayed, touch “SETTING”. Refer to BCS-69, "
CONFIGURATION (BCM) : Con-
figuration list" for written items and setting value.
4. Select "SETTING". CAUTION:
Make sure to select “SETTING” even if the indicat ed configuration of brand new BCM is same as
the desirable configuration. If not, configuratio n which is set automatically by selecting vehicle
model can not be memorized.
5. When "COMMAND FINISHED", select "END".
>> GO TO 4.
4.OPERATION CHECK
Confirm that each function controlled by BCM operates normally.
>> WORK END
Function Description
READ CONFIGURATION  Reads the vehicle configuration of current BCM.
 Saves the read vehicle configuration.
WRITE CONFIGURATION - Manual selection Writes the vehicle configuration with manual selection.
WRITE CONFIGURATION - Config file Writes the vehicle configuration with saved data.
Revision: 2010 May2011 QX56

BCS-70
< DTC/CIRCUIT DIAGNOSIS >
U1000 CAN COMM
DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM
DescriptionINFOID:0000000006274829
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN H-line, CAN L-line) al lowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to LAN-28, "
CAN COMMUNICATION SYSTEM : CAN Communica-
tion Signal Chart".
DTC LogicINFOID:0000000006274830
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:0000000006274831
1.PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result” of BCM.
Is DTC
“U1000” displayed?
YES >> Refer to LAN-18, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-40, "
Intermittent Incident".
DTCCONSULT-III display
description DTC Detection Condition Possible cause
U1000 CAN COMM When BCM cannot communicate CAN com-
munication signal continuously for 2 seconds
or more.
CAN communication system
Revision: 2010 May2011 QX56