2008 INFINITI QX56 ECU

SEC-18
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
VEHICLE SECURITY SYSTEM
Condition of Deacti
vating The System
When one of the following operations is performed, the armed phase is canceled.
• Unlock the doors with Intelligent Key or door request switch.
• Use the mechanical key to unlock the driver door using the door key cylinder.
Component Parts LocationINFOID:0000000001539110
ALKIA0961ZZ
1. BCM M18, M19, M20
(view with instrument panel LH removed) 2. IPDM E/R E122, E124
(view with co ver removed) 3. Horn relay H-1
4. Main power window and door lock/unlock switch D7, D8 5. Power window and door lock/unlock
switch RH D105 6. Front door lock assembly LH (key cylin-
der switch) D14
Revision: March 2010 2008 QX56

VEHICLE SECURITY SYSTEMSEC-19
< FUNCTION DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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Component DescriptionINFOID:0000000001539111
7. Front door switch LH B8 RH B108 8. Rear door switch LH B18
RH B116 9. Back door latch (door ajar switch) D503
Glass hatch ajar switch D707
10. Hood switch E8 11. Horn E3
(view with hood open) 12. Combination meter M24
13. Security indicator lamp
Item Function
BCM Controls the door lock function and room lamp function.
Door switch Provides the BCM with the status of each monitored door.
Hood switch Provides the IPDM E/R with the status of the hood.
Security indicator Indicates the status of the security system.
IPDM E/R Controls the horn and headlamp operation.
Horn Sounds when the vehicle security system is triggered.
Revision: March 2010 2008 QX56

SEC-20
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Fu
nction (BCM - COMMON ITEM)INFOID:0000000004807910
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
IMMU
IMMU : CONSULT-III Function (BCM - IMMU)INFOID:0000000004807911
DATA MONITOR
Diagnosis mode Function Description
WORK SUPPORT Changes the setting for each system function.
SELF-DIAG RESULTS Displays the diagnosis results judged by BCM. Refer to BCS-50, "
DTCIndex".
CAN DIAG SUPPORT MNTR Monitors the reception status of CAN communication viewed from BCM.
DATA MONITOR The BCM input/output signals are displayed.
ACTIVE TEST The signals used to activate each device are forcibly supplied from BCM.
ECU IDENTIFICATION The BCM part number is displayed.
CONFIGURATION • Enables to read and save the vehicle specification.
• Enables to write the vehicle specification when replacing BCM.
System
Sub system selection item Diagnosis mode
WORK SUPPORT DATA MONITOR ACTIVE TEST
BCM BCM ×
Door lock DOOR LOCK ×××
Rear window defogger REAR DEFOGGER ×
Warning chime BUZZER ××
Interior room lamp timer INT LAMP ×××
Exterior lamp HEAD LAMP ×××
Wiper and washer WIPER ×××
Turn signal and hazard warning lamps FLASHER ××
Air conditioner AIR CONDITONER ×
Intelligent Key system INTELLIGENT KEY ×
Combination switch COMB SW ×
Immobilizer IMMU ××
Interior room lamp battery saver BATTERY SAVER ×××
Back door open TRUNK ××
RAP (retained accessory power) RETAINED PWR ×××
Signal buffer system SIGNAL BUFFER ××
TPMS (tire pressure monitoring sys-
tem) AIR PRESSURE MONITOR
×××
Vehicle security system PANIC ALARM ×
Revision: March 2010 2008 QX56

DIAGNOSIS SYSTEM (BCM)SEC-21
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ACTIVE TEST
THEFT ALM
THEFT ALM : CONSULT-III Function (BCM - THEFT ALM)INFOID:0000000004807912
WORK SUPPORT
Monitor Item [Unit] Description
IGN ON SW [ON/OFF] Indicates condition of ignition switch in ON position.
Test Item Description
THEFT IND This test is able to check security indicator operation [ON/OFF].
Work Item Description
SECURITY ALARM SET Vehicle security function mode can be changed in this mode.
• ON: Vehicle security function is ON.
• OFF: Vehicle security function is OFF.
Revision: March 2010
2008 QX56

SEC-22
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DIAGNOSIS SYSTEM (I
NTELLIGENT KEY UNIT)
DIAGNOSIS SYSTEM (INT ELLIGENT KEY UNIT)
CONSULT-III Function (INTELLIGENT KEY)INFOID:0000000001539115
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with Intelligent Key unit.
WORK SUPPORT
SELF-DIAG RESULT
Refer to SEC-79, "DTCIndex".
DATA MONITOR
Diagnosis mode Function Description
WORK SUPPORT Changes the setting for each system function.
SELF-DIAG RESULTS Displays the diagnosis results judged by Intelligent Key unit.
CAN DIAG SUPPORT MNTR Monitors the reception status of CAN communication viewed from Intelligent Key unit.
DATA MONITOR The Intelligent Key unit input/output signals are displayed.
ACTIVE TEST The signals used to activate each device are forcibly supplied from Intelligent Key unit.
ECU IDENTIFICATION The Intelligent Key unit part number is displayed.
Support item DescriptionSelection item Condition
CONFIRM KEY FOB ID It can check whether Intelligent Key ID code
is registered or not. ——
TAKE OUT FROM WINDOW WARN Take away warning chime (from window)
mode can be changed. ON
Active
OFF Inactive
LOW BATT OF KEY FOB WARN Intelligent Key low battery warning mode can
be changed. ON
Active
OFF Inactive
KEYLESS FUNCTION Door lock function with Intelligent Key can be
changed. ON
Active
OFF Inactive
ANSWER BACK FUNCTION Buzzer reminder operation can be changed. ON
Active
OFF Inactive
SELECTIVE UNLOCK FUNCTION Anti-hi jack mode can be changed. ON
Active
OFF Inactive
HAZARD ANSWER BACK Hazard reminder operation mode can be
changed. Refer to DLK-49
.
ANSWER BACK WITH I-KEY LOCK Buzzer reminder operation (lock operation)
mode by each door request switch can be
changed. BUZZER
Active
OFF Inactive
ANSWER BACK WITH I-KEY UNLOCK Buzzer reminder operation (unlock operation)
mode by each door request switch can be
changed. BUZZER
Active
OFF Inactive
AUTO RELOCK TIMER Auto door lock operation mode can be
changed. OFF
Inactive
1 min Active
ENGINE START BY I-KEY Engine start function (by Intelligent Key)
mode can be changed. ON
Active
OFF Inactive
LOCK/UNLOCK BY I-KEY Door lock function by door request switch can
be changed. ON
Active
OFF Inactive
Revision: March 2010 2008 QX56

P1610 LOCK MODESEC-39
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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P1610 LOCK MODE
DescriptionINFOID:0000000001539148
When the starting operation is carried more than five times consecutively under the following conditions, NATS
will shift to the mode which prevents the engine from being started.
• Unregistered mechanical key is used.
• BCM or ECM's malfunctioning.
DTC LogicINFOID:0000000001539149
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES >> Refer to SEC-39, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000001539150
1.CHECK ENGINE START FUNCTION
1. Perform the check for DTC except DTC P1610.
2. Use CONSULT-III to erase DTC after fixing.
3. Check that engine can start with registered mechanical key.
Does the engine start?
YES >> Inspection End.
NO >> GO TO 2
2.CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
>> Inspection End.
DTC No. Trouble diagnosis
name DTC detecting condition
Possible cause
P1610 LOCK MODE When the starting operation is carried out
five or more times consecutively under the
following conditions.
• Unregistered mechanical key
• BCM or ECM's malfunctioning. —
Revision: March 2010
2008 QX56

VEHICLE SECURITY INDICATORSEC-49
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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VEHICLE SECURITY INDICATOR
DescriptionINFOID:0000000001539158
• Vehicle security indicator is built in combination meter.
• NATS (Nissan Anti-Theft System) and vehicle security system conditions are indicated by blink or illumina-
tion of vehicle security indicator.
Component Function CheckINFOID:0000000001539159
1.CHECK FUNCTION
1. Perform “THEFT IND” in the “Active Test” mode with CONSULT-III.
2. Check vehicle security indicator operation.
Is the inspection result normal?
YES >> Inspection End.
NO >> Refer to SEC-49, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001539160
1.SECURITY INDICATOR LAMP ACTIVE TEST
With CONSULT-III
Check "THEFT IND” in "ACTI VE TEST" mode with CONSULT-III.
Without CONSULT-III
1. Disconnect BCM.
2. Check voltage between BCM harness connector M18 terminal 23 and ground.
Is the inspection result normal?
YES >> Security indicator lamp is OK.
NO >> GO TO 2
2.SECURITY INDICATOR LAMP CHECK
Check security indicator lamp condition by performing the self-diagnosis test. Refer to MWI-24, "
Diagnosis
Description".
Is the inspection result normal?
YES >> GO TO 3
NO >> Replace combination meter. Refer to MWI-76, "
Removal and Installation".
3.CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and combination meter connector.
Te s t i t e m D e s c r i p t i o n
THEFT IND ON
Vehicle security indicator ON
OFF OFF
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M18 23Ground ON
0
OFF Battery voltage
LIIA0523E
Revision: March 2010 2008 QX56

SEC-50
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
VEHICLE SECURITY INDICATOR
3. Check continuity between BCM connector (A) M18 terminal 23
and combination meter harness connector (B) M24 terminal 35.
4. Check continuity between BCM connector (A) M18 terminal 23 and ground.
Is the inspection result normal?
YES >> Replace the BCM. Refer to BCS-55, "Removal and
Installation".
NO >> Repair or replace harness. 23 - 35
: Continuity should exist.
23 - Ground : Continuity should not exist.
ALKIA1290ZZ
Revision: March 2010 2008 QX56