2011 INFINITI QX56 ignition

DIAGNOSIS SYSTEM (BCM)SEC-25
< SYSTEM DESCRIPTION > [WITH INTELLIGENT KEY SYSTEM]
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*: OFF is displayed when brake pedal is depressed while brake switch power supply is OFF.
ACTIVE TEST
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
LCD This test is able to check meter display information
 Engine start information displays when “BP N” on CONSULT-III screen is touched
 Engine start information displays when “BP I” on CONSULT-III screen is touched
 Key ID warning displays when “ID NG” on CONSULT-III screen is touched
 Steering lock information displays when “ROTAT” on CONSULT-III screen is touched
 P position warning displays when “SFT P” on CONSULT-III screen is touched
 INSRT: This item is displayed, but cannot be monitored
 BATT: This item is displayed, but cannot be monitored
 Take away through window warning displays when “NO KY” on CONSULT-III screen is
touched
 Take away warning displa y when “OUTKEY” on CONSUL T-III screen is touched
 OFF position warning display when “LK WN” on CONSULT-III screen is touched
FLASHER This test is able to check security hazard lamp operation
The hazard lamps are activated after “LH/RH/Off” on CONSULT-III screen is touched
P RANGE This test is able to check A/T shift selector power supply
 On: Operate
 Off: Non-operation
ENGINE SW ILLUMI This test is able to check push-button ignition switch illumination operation
Push-ignition switch illumination illuminates when “ON” on CONSULT-III screen is touched
Revision: 2010 May2011 QX56

SEC-26
< SYSTEM DESCRIPTION >[WITH INTELLIGENT KEY SYSTEM]
DIAGNOSIS SYSTEM (BCM)
THEFT ALM
THEFT ALM : CONSULT-III Function (BCM - THEFT)INFOID:0000000006226189
DATA MONITOR
WORK SUPPORT
LOCK INDICATORThis test is able to check LOCK indicato
r (push-button ignition switch) operation
 On: Operate
 Off: Non-operation
ACC INDICATOR This test is able to check ACC indicator (push-button ignition switch) operation
 On: Operate
 Off: Non-operation
IGNITION ON IND This test is able to check ON indicator (push-button ignition switch) operation
 On: Operate
 Off: Non-operation
HORN This test is able to check horn operation
 On: Operate
 Off: Non-operation
TRUNK/BACK DOOR NOTE:
This item is displayed, but cannot be used
Test item Description
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.
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.
Revision: 2010 May2011 QX56

DIAGNOSIS SYSTEM (BCM)SEC-27
< SYSTEM DESCRIPTION > [WITH INTELLIGENT KEY SYSTEM]
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ACTIVE TEST
IMMU
IMMU : CONSULT-III Function (BCM - IMMU)INFOID:0000000006226190
DATA MONITOR
ACTIVE TEST
WORK SUPPORT
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 Content
CONFRM ID ALL
Indicates [YET] at all time.
Switches to [DONE] when a registered Intelligent Key backside is contacted to push-button ignition
switch.
CONFIRM ID4
CONFIRM ID3
CONFIRM ID2
CONFIRM ID1
NOT REGISTERED
Indicates [ID OK] when key ID that is registered is received or is not yet received.
Indicates [ID NG] when key ID that is not registered is received.
TP 4
Indicates the number of IDs that are registered.
TP 3
TP 2
TP 1
PUSH SW Indicates [ON/OFF] condition of push-button ignition switch.
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 touched.
Service item Description
CONFIRM DONGLE ID It is possible to check that dongle unit is applied to the vehicle.
Revision: 2010 May2011 QX56

SEC-28
< SYSTEM DESCRIPTION >[WITH INTELLIGENT KEY SYSTEM]
DIAGNOSIS SYSTEM (IPDM E/R)
DIAGNOSIS SYSTEM (IPDM E/R)
CONSULT-III Function (IPDM E/R)INFOID:0000000006365348
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with IPDM E/R.
SELF DIAGNOSTIC RESULT
Refer to
PCS-22, "DTCIndex".
DATA MONITOR
Monitor item
Diagnosis mode Description
Ecu Identification Allows confirmation of IPDM E/R part number.
Self Diagnostic Result Displays the diagnosis results judged by IPDM E/R.
Data Monitor Displays the real-time input/output data from IPDM E/R input/output data.
Active Test IPDM E/R can provide a drive signal to electronic components to check their operations.
CAN Diag Support Monitor The results of transmit/receive diagnosis of CAN communication can be read.
Monitor Item [Unit] MAIN SIG-
NALS Description
RAD FAN REQ
[1/2/3/4] ×
Displays the value of the cooling fan speed request signal received from ECM via
CAN communication.
AC COMP REQ
[Off/On] ×Displays the status of the A/C compressor request signal received from ECM via
CAN communication.
TA I L & C L R R E Q
[Off/On] ×Displays the status of the position light request signal received from BCM via CAN
communication.
HL LO REQ
[Off/On] ×
Displays the status of the low beam request signal received from BCM via CAN
communication.
HL HI REQ
[Off/On] ×Displays the status of the high beam request signal received from BCM via CAN
communication.
FR FOG REQ
[Off/On] ×Displays the status of the front fog light request signal received from BCM via
CAN communication.
FR WIP REQ
[Stop/1LOW/Low/Hi] ×
Displays the status of the front wiper request signal received from BCM via CAN
communication.
WIP AUTO STOP
[STOP P/ACT P] ×
Displays the status of the front wiper auto stop signal judged by IPDM E/R.
WIP PROT
[Off/BLOCK] ×
Displays the status of the front wiper fail-safe operation judged by IPDM E/R.
IGN RLY1 -REQ
[Off/On] Displays the status of the ignition switch ON signal received from BCM via CAN
communication.
IGN RLY
[Off/On] ×
Displays the status of the ignition relay judged by IPDM E/R.
PUSH SW
[Off/On] Displays the status of the push-button ignition switch judged by IPDM E/R.
INTER/NP SW
[Off/On] Displays the status of the shift position judged by IPDM E/R.
ST RLY CONT
[Off/On] Displays the status of the starter relay status signal received from BCM via CAN
communication.
IHBT RLY -REQ
[Off/On] Displays the status of the starter control relay signal received from BCM via CAN
communication.
ST/INHI RLY
[Off/ ST ON/INHI ON/UNKWN] Displays the status of the starter relay and starter control relay judged by IPDM
E/R.
Revision: 2010 May2011 QX56

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNITSEC-51
< BASIC INSPECTION > [WITH INTELLIGENT KEY SYSTEM]
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ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ECM
ECM : DescriptionINFOID:0000000006226197
Performing the following procedure can automatically activate recommunication of ECM and BCM, but only
when the ECM is replaced with a new one*.
*: New one means a virgin ECM that has never been energized on-board.
(In this step, initialization procedur e by CONSULT-III is not necessary)
NOTE:
 When registering new Key IDs or replacing the ECM th at is not brand new, refer to CONSULT-III Oper-
ation Manual NATS-IVIS/NVIS.
 If multiple keys are attached to the key hold er, separate them before beginning work.
 Distinguish keys with unregistered key IDs from those with registered IDs.
ECM : Work ProcedureINFOID:0000000006226198
1.PERFORM ECM RECOMMUNICATING FUNCTION
1. Install ECM.
2. Contact backside of registered Intelligent key* to push-button ignition switch, then turn power supply posi-
tion to ON.
*: To perform this step, use the key that is used before performing ECM replacement.
3. Maintain power supply position in t he ON position for at least 5 seconds.
4. Turn power supply position to OFF.
5. Check that the engine starts.
>> GO TO 2.
2.PERFORM ADDITIONAL SERVICE WHEN REPLACING ECM
Perform EC-143, "
Work Procedure".
>> END
BCM
BCM : DescriptionINFOID:0000000006397657
BEFORE REPLACEMENT
When replacing BCM, save or print current vehicle specification with CONSULT-III configuration before
replacement.
NOTE:
If “READ CONFIGURATION” can not be used, use the “WRITE CONFIGURATION - Manual selection” after
replacing BCM.
AFTER REPLACEMENT
CAUTION:
 When replacing BCM, you must perform “W RITE 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 model. Confirm conf iguration of each vehicle model.
 When replacing BCM, perform the system initialization (NATS).
BCM : Work ProcedureINFOID:0000000006397658
1.SAVING VEHICLE SPECIFICATION
CONSULT-III Configuration
Perform “READ CONFIGURATION” to save or prin t current vehicle specification. Refer to BCS-67, "
CONFIG-
URATION (BCM) : Description".
NOTE:
Revision: 2010 May2011 QX56

P1610 LOCK MODESEC-53
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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DTC/CIRCUIT DIAGNOSIS
P1610 LOCK MODE
DescriptionINFOID:0000000006226201
ECM forcibly switches to the mode that inhibits engi ne start, when engine start operation is performed 5 times
or more while communication between ECM and BCM is not normal.
DTC LogicINFOID:0000000006226202
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check DTC in “Self Diagnostic Result” mode of “ENGINE” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-53, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226203
1.CHECK ENGINE START FUNCTION
1. Check that DTC except fo r DTC P1610 is not detected.
If detected, erase the DTC after fixing.
2. Turn ignition switch OFF.
3. Contact the registered Intelligent Key backside to push-button ignition switch and wait 5 seconds.
4. Turn ignition switch ON.
5. Turn ignition switch OFF and wait 5 seconds.
6. Repeat steps 3 and 5 twice (a total of 3 times).
7. Check that engine can start.
>> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible causeP1610 LOCK MODE When ECM detects a communication malfunction between
ECM and BCM 5 times or more.
—
Revision: 2010 May2011 QX56

SEC-54
< DTC/CIRCUIT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
P1611 ID DISCORD, IMMU-ECM
P1611 ID DISCORD, IMMU-ECM
DTC LogicINFOID:0000000006226204
DTC DETECTION LOGIC
NOTE:
 If DTC P1611 is displayed with DTC U1000 (for BC
M), first perform the trouble diagnosis for DTC U1000.
Refer to BCS-70, "
DTC Logic".
 If DTC P1611 is displayed with DTC U1010 (for BC M), first perform the trouble diagnosis for DTC U1010.
Refer to BCS-71, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check DTC in “Self Diagnostic Result” mode of “ENGINE” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-54, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226205
1.PERFORM INITIALIZATION
Perform initialization of BCM and reregistration of all Intelligent Keys using CONSULT-III.
For initialization and registration procedures, refer to CONSULT-III Operation Manual NATS-IVIS/NVIS.
Can the system be initialized and can the engine be started with reregistered Intelligent Key?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK SELF DIAGNOSTIC RESULT
1. Select “Self Diagnostic Result” m ode of “ENGINE” using CONSULT-III.
2. Erase DTC.
3. Perform DTC CONFIRMATION PROCEDURE for DTC P1611. Refer to SEC-54, "
DTC Logic".
Is DTC detected?
YES >> GO TO 3.
NO >> INSPECTION END
3.REPLACE BCM
1. Replace BCM. Refer to BCS-81, "
Removal and Installation".
2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT-III.
For initialization and registration procedures, refer to CONSULT-III Operation Manual NATS-IVIS/NVIS.
Can the system be initialized and can the engi ne be started with registered Intelligent Key?
YES >> INSPECTION END
NO >> GO TO 4.
4.REPLACE ECM
1. Replace ECM. Refer to EC-535, "
Removal and Installation".
2. Perform “ADDITIONAL SERVICE WHEN REPLACING ECM”. Refer to EC-143, "
Work Procedure".
>> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1611 ID DISCORD, IMMU-ECM The ID verification results between BCM
and ECM are NG.  Harness or connectors
(The CAN communication line is open
or shorted.)
BCM
ECM
Revision: 2010 May2011 QX56

P1612 CHAIN OF ECM-IMMUSEC-55
< DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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P1612 CHAIN OF ECM-IMMU
DTC LogicINFOID:0000000006226206
DTC DETECTION LOGIC
NOTE:
 If DTC P1612 is displayed with DTC U1000 (for BC M), first perform the trouble diagnosis for DTC U1000.
Refer to BCS-70, "
DTC Logic".
 If DTC P1612 is displayed with DTC U1010 (for BC M), first perform the trouble diagnosis for DTC U1010.
Refer to BCS-71, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check DTC in “Self Diagnostic Result” mode of “ENGINE” using CONSULT-III.
Is DTC detected?
YES >> Go to SEC-55, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006226207
1.REPLACE BCM
1. Replace BCM. Refer to BCS-81, "
Removal and Installation".
2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT-III.
For initialization and registration procedures, refer to CONSULT-III Operation Manual NATS-IVIS/NVIS.
Can the system be initialized and can the engine be started with registered Intelligent Key?
YES >> INSPECTION END
NO >> GO TO 2.
2.REPLACE ECM
1. Replace ECM. Refer to EC-535, "
Removal and Installation".
2. Perform “ADDITIONAL SERVICE WHEN REPLACING ECM”. Refer to EC-143, "
Work Procedure".
>> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1612 CHAIN OF ECM-IMMU Inactive communication between ECM
and BCM  Harness or connectors
(The CAN communication line is open or
shorted.)
BCM
ECM
Revision: 2010 May2011 QX56