2004 INFINITI QX56 ignition

BCM (BODY CONTROL MODULE)
BCS-13
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BCS
Revision: August 20072004 QX56
Display Item List
CAN Communication Inspection Using CONSULT-II (Self-Diagnosis)EKS007GI
1. SELF-DIAGNOSTIC RESULT CHECK
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. Connect to CONSULT-II, and select “BCM” on “SELECT SYSTEM” screen.
2. Select “BCM” on “SELECT TEST ITEM” screen, and select “SELF-DIAG RESULTS”.
3. Check display content in self-diagnostic results.
Contents displayed
No malfunction>>Inspection End
Malfunction in CAN communication system>>After printing the monitor items, go to LAN-5, "
CAN COMMU-
NICATION" .
ConfigurationEKS007GJ
DESCRIPTION
CONFIGURATION has two functions as follows:

READ CONFIGURATION is the function to confirm vehicle configuration of current BCM.

WRITE CONFIGURATION is the function to write vehicle configuration on BCM.
CAUTION:

When replacing BCM, you must perform WRITE CONFIGURATION with CONSULT-II.

Complete the procedure of WRITE CONFIGURATION in order.

If you set incorrect WRITE CONFIGURATION, incidents will occur.

Configuration is different for each vehicle model. Confirm configuration of each vehicle model.
READ CONFIGURATION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. With ignition switch OFF, connect CONSULT-II and CONSULT-II
CONVERTER to data link connector and turn ignition switch ON.
Item Description
RESET SETTING VALUE Return a value set with WORK SUPPORT of each system to a default value in factory shipment.
CONSULT-II display code Diagnosis item
U1000INITIAL DIAG
TRANSMIT DIAG
ECM
IPDM E/R
METER/M&A
I-KEY
BBIA0369E

BCS-16
BCM (BODY CONTROL MODULE)
Revision: August 20072004 QX56
WRITE CONFIGURATION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. With ignition switch OFF, connect CONSULT-II and CONSULT-II
CONVERTER to data link connector and turn ignition switch ON.
2. Touch “START (NISSAN BASED VHCL)”.
3. Touch “BCM” on “SELECT SYSTEM” screen.
If "BCM" is not indicated, go to GI-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
4. Touch “BCM” on “SELECT TEST ITEM” screen.
BBIA0369E
BCIA0029E
BCIA0030E
LKIA0183E

BCM (BODY CONTROL MODULE)
BCS-19
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BCS
Revision: August 20072004 QX56
14. Touch "OK" on "WRITE CONFIGURATION" screen.
WRITE CONFIGURATION is completed.
Removal and Installation of BCMEKS007GK
REMOVAL
NOTE:
If possible, before removing BCM, retrieve current BCM configuration to use for reference when configuring
brand-new BCM after installation. Refer to BCS-13, "
Configuration" .
1. Disconnect negative battery cable.
2. Remove lower knee protector LH. Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
3. Remove screw and release BCM.
4. Disconnect connectors and then remove BCM.
INSTALLATION
Installation is in the reverse order of removal.
NOTE:

When replacing BCM, it must be configured. Refer to BCS-13, "Configuration" .

When replacing BCM, perform initialization of NATS system and registration of all NATS ignition key IDs.
Refer to BL-138, "
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)" .

When replacing BCM, perform ID registration procedure of low tire pressure warning system. Refer to
WT-13, "
ID Registration Procedure" .
LKIA0400E
LEIA0068E

POWER DOOR LOCK SYSTEM
BL-17
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Revision: August 20072004 QX56
System DescriptionEIS002R9
Power is supplied at all times

to BCM terminal 70

through 50A fusible link (letter f, located in the fuse and fusible link box) and

to BCM terminal 57

through 15A fuse [No. 22, located in the fuse block (J/B)] and

to key switch and key lock solenoid terminal 3

through 10A fuse [No. 19, located in the fuse block (J/B)].
With ignition key inserted, power is supplied

to BCM terminal 37

through key switch and key lock solenoid terminals 3 and 4

through 10A fuse [No. 19, located in fuse block (J/B)].
Ground is supplied to terminal 67 of BCM through body grounds M57, M61 and M79.
When the door is locked or unlocked with main power window and door lock/unlock switch, ground is supplied

to CPU of main power window and door lock/unlock switch

through main power window and door lock/unlock switch terminal 17

through grounds M57, M61 and M79.
Then main power window and door lock/unlock switch operation signal is supplied

to BCM terminal 22

through main power window and door lock/unlock switch terminal 14.
When the door is locked or unlocked with power window and door lock/unlock switch RH, ground is supplied

to CPU of power window and door lock/unlock switch RH

through power window and door lock/unlock switch RH terminal 11

through grounds M57, M61 and M79.
Then power window and door lock/unlock switch RH operation signal is supplied

to BCM terminal 22

through power window and door lock/unlock switch RH terminal 16.
When the door is locked with front door lock assembly LH (key cylinder switch), ground is supplied

to main power window and door lock/unlock switch terminal 4

through front door lock assembly LH (key cylinder switch) terminals 1 and 5

through grounds M57, M61 and M79.
Then front door lock assembly LH (key cylinder switch) operation signal is supplied

to BCM terminal 22

through main power window and door lock/unlock switch terminal 14.
When the door is unlocked with front door lock assembly LH (key cylinder switch), ground is supplied

to main power window and door lock/unlock switch terminal 6

through front door lock assembly LH (key cylinder switch) terminals 6 and 5

through grounds M57, M61 and M79.
Then front door lock assembly LH (key cylinder switch) operation signal is supplied

to BCM terminal 22

through main power window and door lock/unlock switch terminal 14.
BCM is connected to main power window and door lock/unlock switch and power window and door lock/unlock
switch RH through a serial link.
When the front door switch LH is ON (door is open), ground is supplied

to BCM terminal 47

through front door switch LH terminal 2

through front door switch LH case ground.
When the front door switch RH is ON (door is open), ground is supplied

to BCM terminal 12

BL-18
POWER DOOR LOCK SYSTEM
Revision: August 20072004 QX56

through front door switch RH terminal 2

through front door switch RH case ground.
When the rear door switch LH is ON (door is open), ground is supplied

to BCM terminal 48

through rear door switch LH terminal 2

through rear door switch LH case ground.
When the rear door switch RH is ON (door is open), ground is supplied

to BCM terminal 13

through rear door switch RH terminal 2

through rear door switch RH case ground.
When the back door latch (door ajar switch) is ON (door is open), ground is supplied

to BCM terminal 43

through back door latch (door ajar switch) terminal 7

through back door latch (door ajar switch) terminal 8

through grounds B7 and B19.
OUTLINE
Functions available by operating the door lock and unlock switches on driver door and pas-
senger door

Interlocked with the locking operation of door lock and unlock switch, door lock actuators of all doors and
glass hatch actuator are locked.

Interlocked with the unlocking operation of door lock and unlock switch, door lock actuators of all doors
and glass hatch actuator are unlocked.
Functions available by operating the front door lock assembly LH (key cylinder switch)

Interlocked with the locking operation of door key cylinder, door lock actuators of all doors are locked.

When door key cylinder is unlocked, front door lock assembly LH (actuator) is unlocked.

When door key cylinder is unlocked for the second time within 5 seconds after the first operation, door
lock actuators on all doors are unlocked.
Key reminder door system
When door lock and unlock switch is operated to lock doors with ignition key in key cylinder and any door
open, all door lock actuators are locked and then unlocked.

POWER DOOR LOCK SYSTEM
BL-25
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Revision: August 20072004 QX56
Terminals and Reference Value for BCMEIS002RC
Work FlowEIS002RD
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to BL-17, "
System Description" .
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to BL-29,
"Trouble Diagnoses Symptom Chart" .
4. Does power door lock system operate normally? OK: GO TO 5, NG: GO TO 3.
5. Inspection End.
Te r m i -
nalWire
ColorItem ConditionVoltage (V)
(Approx.)
12 R/L Front door switch RH Door open (ON) → Door close (OFF) 0 → Battery voltage
13 GR Rear door switch RH Door open (ON) → Door close (OFF) 0 → Battery voltage
22 W/V Power window serial linkWhen ignition switch is ON or power
window timer operates
30 Y/BR Glass hatch switchGlass hatch switch released →
Glass hatch switch pressedBattery voltage → 0
37 B/RKey switch and key lock sole-
noid (insert)Key inserted in IGN key cylinder (ON) →
Key removed from IGN key cylinder
(OFF)Battery voltage → 0
39 W CAN-H — —
40 R CAN-L — —
43 R/BBack door latch (door ajar
switch) Door open (ON) → Door close (OFF) 0 → Battery voltage
47 SB Front door switch LH Door open (ON) → Door close (OFF) 0 → Battery voltage
48 R/Y Rear door switch LH Door open (ON) → Door close (OFF) 0 → Battery voltage
53 L/W Glass hatch lock actuatorGlass hatch switch released →
Glass hatch switch pressed0 → Battery voltage for 300 ms
57 Y/R Battery power supply — Battery voltage
59 GFront door lock assembly LH
(actuator) (unlock)Driver door lock knob
(locked → unlocked)0 → Battery voltage
65 V All door lock actuators (lock) Driver door lock knob (neutral → lock) 0 → Battery voltage
66 G/YFront door lock actuator RH,
rear door lock actuators LH/RH
and back door lock actuator
(unlock)Door lock and unlock switch (locked →
unlocked)0 → Battery voltage
67 B Ground — —
70 W/B Battery power supply — Battery voltage
PIIA2344E

BL-26
POWER DOOR LOCK SYSTEM
Revision: August 20072004 QX56
CONSULT–II Function (BCM)EIS002RE
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT–II INSPECTION PROCEDURE
CONSULT-II can display each diagnostic item using the following diagnostic test modes: data monitor, active
test, and CAN diagnostic support monitor through data reception and command transmission via the BCM
communication line.
"DOOR LOCK"
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to the
data link connector.
3. Turn ignition switch ON.
4. Touch “START (NISSAN BASED VHCL)”.
BCM
diagnostic test itemDiagnostic mode Description
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the
BCM for setting the status suitable for required operation, input/output sig-
nals are received from the BCM and received date is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TESTOperation of electrical loads can be checked by sending drive signal to
them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTRThe result of transmit/receive diagnosis of CAN communication can be
read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
BBIA0369E
BCIA0029E

POWER DOOR LOCK SYSTEM
BL-27
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Revision: August 20072004 QX56
5. Touch “BCM”.
If "BCM" is not indicated, refer to GI-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
6. Touch “DOOR LOCK”.
7. Select diagnosis mode.
“DATA MONITOR” and “ACTIVE TEST” are available.
DATA MONITOR
BCIA0030E
LIIA1137E
BCIA0031E
Monitor item "OPERATION" Content
KEY ON SW "ON/OFF" Indicates [ON/OFF] condition of key switch.
CDL LOCK SW "ON/OFF" Indicates [ON/OFF] condition of lock signal from lock/unlock switch LH and RH.
CDL UNLOCK SW "ON/OFF" Indicates [ON/OFF] condition of unlock signal from lock/unlock switch LH and RH.
KEY CYL LK-SW "ON/OFF" Indicates [ON/OFF] condition of lock signal from key cylinder.
KEY CYL UN-SW "ON/OFF" Indicates [ON/OFF] condition of unlock signal from key cylinder.
IGN ON SW "ON/OFF" Indicates [ON/OFF] condition of ignition switch.
DOOR SW–DR "ON/OFF" Indicates [ON/OFF] condition of front door switch LH.
DOOR SW–AS "ON/OFF" Indicates [ON/OFF] condition of front door switch RH.
DOOR SW–RR "ON/OFF" Indicates [ON/OFF] condition of rear door switch RH.
DOOR SW–RL "ON/OFF" Indicates [ON/OFF] condition of rear door switch LH.
BACK DOOR SW "ON/OFF" Indicates [ON/OFF] condition of back door latch (door ajar switch).
KEYLESS LOCK "ON/OFF" Indicates [ON/OFF] condition of lock signal from keyfob.
KEYLESS UNLOCK "ON/OFF" Indicates [ON/OFF] condition of unlock signal from keyfob.