2007 INFINITI QX56 keyless entry

REMOTE KEYLESS ENTRY SYSTEM
BL-47
< SERVICE INFORMATION >
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Keyless power window down operation mode
Trouble Diagnosis ProcedureINFOID:0000000003532923
1. Check the symptom and customer's requests.
2. Understand outline of system. Refer to BL-37, "
System Description".
3. Confirm system operation.
• Check that the power door lock system operates normally. Refer to BL-15
.
• Check that the automatic back door system operates normally. Refer to BL-80
.
4. Perform pre-diagnosis inspection. Refer to BCS-15, "
BCM Power Supply and Ground Circuit Inspection" .
5. Refer to trouble diagnosis chart by symptom, repair or replace any malfunctioning parts. Refer to BL-47,
"Trouble Diagnosis".
6. Inspection End.
BCM Power Supply and Ground Circuit InspectionINFOID:0000000003532924
Refer to BCS-15, "BCM Power Supply and Ground Circuit Inspection".
Trouble DiagnosisINFOID:0000000003532925
SYMPTOM CHART
NOTE:
• Always check the "Trouble Diagnosis Procedure" before troubleshooting. Refer to BL-47, "
Trouble Diagnosis
Procedure" .
• Always check keyfob battery before replacing keyfob. Refer to BL-52, "
Keyfob Battery and Function Check".
• The panic alarm operation and power back door opener operation of remote keyless entry system do not
activate with the ignition key inserted in the ignition key cylinder.
• Use Remote Keyless Entry Tester J-43241 (follow instructions on tester) to check operation of keyfob before
replacing keyfob.
MODE 1 MODE 2 MODE 3
Keyfob operation 3 seconds Nothing 5 seconds
Symptom Diagnoses/service procedureReference
page
All functions of remote keyless entry system do not
operate.1. Keyfob battery and function check (use Remote Keyless Entry
Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunc-
tioning.BL-52
2. Remote keyless entry receiver system.BL-53
The new ID of keyfob cannot be entered.1. Keyfob battery and function check (use Remote Keyless Entry
Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunc-
tioning.BL-522. Key switch and key lock solenoid (insert) checkBL-49
3. Door switch checkBL-49
4. ACC power checkBL-54
5. Replace BCM.BCS-24
Door lock or unlock does not function.
(If the power door lock system does not operate
manually, check power door lock system. Refer to
BL-15
)1. Keyfob battery and function check (use Remote Keyless Entry
Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunc-
tioning.BL-52
2. Replace BCM.BCS-24

BL-48
< SERVICE INFORMATION >
REMOTE KEYLESS ENTRY SYSTEM
Hazard and horn reminder does not activate properly
when pressing lock or unlock button of keyfob.1. Check hazard and horn reminder mode with CONSULT-II
NOTE:
Hazard and horn reminder mode can be changed.
First check the hazard and horn reminder mode setting.BL-37
2. Door switch checkBL-49
3. Replace BCM.BCS-24
Hazard reminder does not activate properly when
pressing lock or unlock button of keyfob.
(Horn reminder OK)1. Check hazard reminder mode with CONSULT-II
NOTE:
Hazard reminder mode can be changed.
First check the hazard reminder mode setting.BL-37
2. Check hazard function with hazard switch —
3. Replace BCM.BCS-24
Horn reminder does not activate properly when
pressing lock or unlock button of keyfob.
(Hazard reminder OK)1. Check horn reminder mode with CONSULT-II
NOTE:
Horn reminder mode can be changed.
First check the horn reminder mode setting.BL-37
2. Check horn function with horn switch —
3. IPDM E/R operation checkBL-54
4. Replace BCM.BCS-24
Back door open/close operation is not carried out
with keyfob operation.
(The automatic back door system is normal.)1. Keyfob battery and function check (use Remote Keyless Entry
Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunc-
tioning.BL-52
2. Key switch (insert) checkBL-49
3. Check that glass hatch is closed —
4. Remote keyless entry receiver systemBL-53
5. Replace BCM.BCS-24
Room lamp, ignition keyhole illumination and step
lamp operation do not activate properly.1. Room lamp operation checkBL-56
2. Ignition keyhole illumination operation checkBL-56
3.Step lamp operation checkLT- 1 0 1
4. Door switch checkBL-49
5. Replace BCM.BCS-24
Panic alarm (horn and headlamp) does not activate
when panic alarm button is continuously pressed.1. Keyfob battery and function check (use Remote Keyless Entry
Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunc-
tioning.BL-52
2. Key switch and key lock solenoid (insert) checkBL-49
3. Replace BCM.BCS-24
Auto door lock operation does not activate properly.
(All other remote keyless entry functions OK.)1. Check auto door lock operation mode with CONSULT-II
NOTE:
Auto door lock operation mode can be changed.
First check the auto door lock operation mode setting.BL-45
2. Replace BCM.BCS-24
Keyless power window down (open) operation does
not activate properly.
(All other remote keyless entry functions OK.)1. Check power window down operation mode with CONSULT-II
NOTE:
Power window down operation mode can be changed.
First check the power window down operation mode setting.BL-45
2. Check power window function with switch —
3. Replace BCM.BCS-24
Symptom Diagnoses/service procedureReference
page

REMOTE KEYLESS ENTRY SYSTEM
BL-49
< SERVICE INFORMATION >
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Key Switch (Insert) CheckINFOID:0000000003532926
1.CHECK KEY SWITCH INPUT SIGNAL
With CONSULT-II
Check key switch "KEY ON SW" in DATA MONITOR mode with CONSULT–II. Refer to BL-45, "
CONSULT-II
Application Item" .
• When key is inserted to ignition key cylinder:
• When key is removed from ignition key cylinder:
Without CONSULT-II
Check voltage between BCM connector M18 terminal 37 and
ground.
OK or NG
OK >> Key switch (insert) circuit is OK.
NG >> GO TO 2.
2.CHECK KEY SWITCH (INSERT)
1. Turn ignition switch OFF.
2. Disconnect key switch and key lock solenoid connector.
3. Check continuity between key switch and key lock solenoid terminals 3, 4.
OK or NG
OK >> Repair or replace harness.
NG >> Replace key switch.
Door Switch CheckINFOID:0000000003532927
1.CHECK DOOR SWITCHES INPUT SIGNAL
With CONSULT-II
Check door switches ("DOOR SW-DR", "DOOR SW-AS", "DOOR SW-RL", "DOOR SW-RR", "BACK DOOR
SW") in DATA MONITOR mode with CONSULT–II.Refer to BL-45, "
CONSULT-II Application Item".
• When doors are open:KEY ON SW : ON
KEY ON SW : OFF
LIIA0169E
ConnectorTe r m i n a l s
Condition Voltage (V)
(+) (–)
M18 37 GroundKey is inserted. Battery voltage
Key is removed. 0
LIIA0567E
Terminals Condition Continuity
3 – 4Key is inserted. Yes
Key is removed. No
LIIA1044E

BL-50
< SERVICE INFORMATION >
REMOTE KEYLESS ENTRY SYSTEM
• When doors are closed:
Without CONSULT-II
Check voltage between BCM connector M18 or M19 terminals 12,
13, 43, 47, 48 and ground.
OK or NG
OK >> Door switch circuit is OK.
NG >> GO TO 2.
2.CHECK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door switch and BCM.
3. Check continuity between door switch connector (B) B8 (front LH), B108 (front RH), B18 (rear LH), B116
(rear RH) terminal 2 or back door latch connector (C) D503 terminal 7 and BCM connectors (A) M18, M19
terminals 12, 13, 43, 47 and 48.DOOR SW-DR : ON
DOOR SW-AS : ON
DOOR SW-RL : ON
DOOR SW-RR : ON
BACK DOOR SW : ON
DOOR SW-DR : OFF
DOOR SW-AS : OFF
DOOR SW-RL : OFF
DOOR SW-RR : OFF
BACK DOOR SW : OFF
LIIA0665E
Connector ItemTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (–)
M19Back door
latch (door
ajar switch)43
GroundOpen
↓
Closed0
↓
Battery voltage Front door
switch LH47
Rear door
switch LH48
M18Front door
switch RH12
Rear door
switch RH13
LIIA1041E

REMOTE KEYLESS ENTRY SYSTEM
BL-51
< SERVICE INFORMATION >
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4. Check continuity between door switch connector (B) B8 (front
LH), B108 (front RH), B18 (rear LH), B116 (rear RH) terminal 2
or back door latch connector (C) D503 terminal 7 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK DOOR SWITCHES
FRONT AND REAR DOORS
Check continuity between front or rear door switch terminal 2 and
exposed metal of switch while pressing and releasing switch.
BACK DOOR
Check continuity between back door latch connector (A) D503 termi-
nals 7 and 8 while pressing (closing back door) and releasing (open-
ing back door) switch.
OK or NG
OK >> (Front and rear doors) Switch circuit is OK.
OK >> (Back door) GO TO 4.
NG >> Replace door switch.
4.CHECK BACK DOOR SWITCH GROUND2 - 12 : Continuity should exist.
2 - 13 : Continuity should exist.
2 - 47 : Continuity should exist.
2 - 48 : Continuity should exist.
7 - 43 : Continuity should exist.
2 - Ground : Continuity should not exist.
7 - Ground : Continuity should not exist.
WIIA0750E
Door switch is released : Continuity should exist.
Door switch is pushed : Continuity should not exist.
WIIA0644E
When back door is open : Continuity should exist.
When back door is closed : Continuity should not exist.
WIIA0752E

BL-52
< SERVICE INFORMATION >
REMOTE KEYLESS ENTRY SYSTEM
Check continuity between back door latch connector terminal 8 and
ground.
OK or NG
OK >> Back door switch circuit is OK.
NG >> Repair or replace harness.
Keyfob Battery and Function CheckINFOID:0000000003532928
1.CHECK KEYFOB BATTERY
Remove battery and measure voltage across battery positive and negative terminals, (+) and (−).
NOTE:
Keyfob does not function if battery is not set correctly.
OK or NG
OK >> GO TO 2.
NG >> Replace battery.
2.CHECK KEYFOB FUNCTION
With CONSULT-II
Check keyfob function in “DATA MONITOR” mode with CONSULT-II.
When pushing each button of keyfob, the corresponding monitor item should be
turned as follows.
Without CONSULT-II
Check keyfob function using Remote Keyless Entry Tester J-43241.
OK or NG
OK >> WITH CONSULT-II: Keyfob, remote keyless entry receiver and wiring harness between BCM and
remote keyless entry receiver are OK. Replace BCM. Refer to BCS-24, "
BCM" .
OK >> WITHOUT CONSULT-II: Keyfob is OK. Further inspection is necessary. Refer to BL-47, "
Trouble
Diagnosis" .
NG >> WITH CONSULT-II: Further inspection is necessary. Refer to BL-47, "
Trouble Diagnosis".
NG >> WITHOUT CONSULT-II: Replace keyfob. Refer to BL-56, "
ID Code Entry Procedure". 8 - Ground : Continuity should exist.
LIIA0828E
Voltage : 2.5V - 3.0V
SEL237W
Condition Monitor item
Pushing LOCK KEYLESS LOCK : ON
Pushing UNLOCK KEYLESS UNLOCK : ON
Keep pushing UNLOCKRKE KEEP UNLK turns
to ON 3 seconds after
UNLOCK button is
pushed.
Pushing PANIC KEYLESS PANIC : ON
Pushing LOCK and UNLOCK
at the same timeRKE LCK-UNLCK : ON
Pushing Power Back Door KEYLESS PBD : ON
LIIA1487E

REMOTE KEYLESS ENTRY SYSTEM
BL-53
< SERVICE INFORMATION >
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Remote Keyless Entry Receiver System InspectionINFOID:0000000003532929
1.REMOTE KEYLESS ENTRY RECEIVER SIGNAL
Check signal voltage waveform between BCM connector M18 termi-
nal 20 and ground using an oscilloscope.
OK or NG
OK >> Remote keyless entry receiver signal power supply, ground and signal circuits are OK. Replace
BCM. Refer to BCS-24, "
BCM" .
NG >> GO TO 2.
2.REMOTE KEYLESS ENTRY RECEIVER POWER SUPPLY INSPECTION
Check signal voltage waveform between BCM connector M18 termi-
nal 19 and ground using an oscilloscope.
OK or NG
OK >> GO TO 3.
NG >> Replace BCM. Refer to BCS-24, "
BCM" .
3.REMOTE KEYLESS ENTRY RECEIVER GROUND CIRCUIT INSPECTION (BCM)
Check continuity between BCM connector M18 terminal 18 and
ground.
OK or NG
OK >> GO TO 4.
NG >> Replace BCM. Refer to BCS-24, "
BCM" .
4.HARNESS INSPECTION BETWEEN BCM AND REMOTE KEYLESS ENTRY RECEIVER
1. Disconnect remote keyless entry receiver and BCM connectors.Condition:
Keyfob buttons released : Refer to BCS-11, "
Te r m i -
nal and Reference Value
for BCM".
Keyfob buttons pressed : Refer to BCS-11, "
Te r m i -
nal and Reference Value
for BCM".LIIA1275E
19 - Ground : Refer to BCS-11, "Te r m i -
nal and Reference Value
for BCM".
WIIA0433E
18 - Ground : Continuity should exist.
WIIA0434E

BL-54
< SERVICE INFORMATION >
REMOTE KEYLESS ENTRY SYSTEM
2. Check continuity between remote keyless entry receiver con-
nector M120 terminals 1, 2, 4 and BCM connector M18 termi-
nals 18, 19, 20.
3. Check continuity between remote keyless entry receiver termi-
nals 1, 2 and 4 and ground.
OK or NG
OK >> Replace remote keyless entry receiver.
NG >> Repair or replace harness.
ACC Power CheckINFOID:0000000003532930
1.CHECK ACC POWER
With CONSULT-II
Check "ACC ON SW" in DATA MONITOR mode with CONSULT–II. Refer to BL-45, "
CONSULT-II Application
Item".
Without CONSULT-II
Check voltage between BCM connector M18 terminal 11 and
ground.
OK or NG
OK >> ACC power circuit is OK.
NG >> Check the following:
• 10A fuse [No. 4, located in fuse block (J/B)]
• Harness for open or short.
IPDM E/R Operation CheckINFOID:0000000003532931
1.CHECK IPDM E/R INPUT VOLTAGE1 - 18 : Continuity should exist.
2 - 20 : Continuity should exist.
4 - 19 : Continuity should exist.
1 - Ground : Continuity should not exist.
2 - Ground : Continuity should not exist.
4 - Ground : Continuity should not exist.
WIIA0308E
Monitor Item Condition
ACC ON SWIgnition switch position ACC : ON
Ignition switch position OFF : OFF
PIIA3367E
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (–)
M18 11 GroundACC Battery voltage
OFF 0
PIIA7002E