key fob battery INFINITI QX56 2006 Factory Service Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2006, Model line: QX56, Model: INFINITI QX56 2006Pages: 3383, PDF Size: 51.76 MB
Page 768 of 3383
BCM (BODY CONTROL MODULE)BCS-7
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Revision: November 2009 2006 QX56
BCM is activated with low current consumption mode.
CAN communication is not active.
When CAN communication operation is detected, it switches to CAN communication status.
When a state of the following switches changes, it switches to CAN communication state:
–Ignition switch
–Key switch (insert)
–Hazard switch
–Main door lock/unlock switch
–Front door switch (LH, RH)
–Rear door switch (LH, RH)
–Back latch (door ajar switch)
–Glass hatch ajar switch
–Combination switch (passing, lighting switch 1st position, front fog lamp)
–Keyfob (lock/unlock signal)
–Front door lock assembly LH (key cylinder switch)
When control performed only by BCM is required by switch, it shifts to CAN communication inactive
mode.
Status of combination switch reading function is changed.
SYSTEMS CONTROLLED BY BCM DIRECTLY
Power door lock system. Refer to BL-16, "POWER DOOR LOCK SYSTEM" .
Remote keyless entry system. Refer to BL-44, "REMOTE KEYLESS ENTRY SYSTEM" .
Power window system. Refer to GW-15, "POWER WINDOW SYSTEM" . NOTE
Sunroof system. Refer to RF-10, "SUNROOF" . NOTE
Room lamp timer. Refer to LT- 1 3 4 , "INTERIOR ROOM LAMP" .
Warning chime system. Refer to DI-43, "WARNING CHIME" .
Turn signal and hazard warning lamps system. Refer to LT- 8 0 , "TURN SIGNAL AND HAZARD WARNING
LAMPS" .
Trailer turn signal and hazard warning lamps system (if equipped). Refer to LT- 1 2 6 , "TRAILER TOW" .
Rear wiper and washer system. Refer to WW-32, "REAR WIPER AND WASHER SYSTEM" .
NOTE:
Power supply only. No system control.
SYSTEMS CONTROLLED BY BCM AND IPDM E/R
Panic system. Refer to BL-44, "REMOTE KEYLESS ENTRY SYSTEM" .
Vehicle security system. Refer to BL-75, "VEHICLE SECURITY (THEFT WARNING) SYSTEM" .
IVIS (NATS) system. Refer to BL-137, "IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)" .
Headlamp, tail lamp, front fog lamp, auto light and battery saver control systems. Refer to LT- 5 , "HEAD-
LAMP (FOR USA)" , LT- 3 3 , "HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -" , LT- 111 ,
"PARKING, LICENSE PLATE AND TAIL LAMPS" , LT- 6 9 , "FRONT FOG LAMP" or LT- 4 7 , "AUTO LIGHT
SYSTEM" .
Front wiper and washer system. Refer to WW-4, "FRONT WIPER AND WASHER SYSTEM" .
Rear window defogger system. Refer to GW-74, "REAR WINDOW DEFOGGER" .
MAJOR COMPONENTS AND CONTROL SYSTEM
System InputOutput
Remote keyless entry system Remote keyless entry receiver (keyfob)
All door locking actuators
Back door opener actuator
Turn signal lamps
Power door lock system
Front power door lock/unlock switch (LH, RH)
All door switches
Key switch All door locking actuators
Page 769 of 3383
BCS-8
BCM (BODY CONTROL MODULE)
Revision: November 20092006 QX56
CAN Communication System DescriptionEKS00D7X
Refer to LAN-26, "CAN COMMUNICATION" .
Power supply [ignition (IGN)/retained
accessory power (RAP)] to power win-
dow and sunroof IGN/RAP supply
Power supply to power window and
sunroof system
Power supply (BAT) to power window
and sunroof Battery power supply Power supply to power window and
sunroof system
Panic alarm
Key switch
Remote keyless entry receiver (keyfob) IPDM E/R
Auto light system
Optical sensor
Combination switch IPDM E/R
Battery saver control
Ignition switch
Combination switch
Front door switch LH and RH IPDM E/R
Headlamp Combination switch IPDM E/R
Tail lamp Combination switch IPDM E/R
Front fog lamp Combination switch IPDM E/R
Turn signal lamp Combination switch
Turn signal lamp
Combination meter
Hazard lamp Hazard switch
Turn signal lamp
Combination meter
Room lamp timer
Key switch
Remote keyless entry receiver (keyfob)
Main power window and door lock/unlock switch
Front door lock assembly LH (key cylinder switch)
All door switches Interior room lamp
Key warning chime
Key switch
Front door switch LH Combination meter (warning
buzzer)
Light warning chime
Combination switch
Key switch
Front door switch LH Combination meter (warning
buzzer)
Vehicle-speed-sensing intermittent
wiper
Combination switch
Combination meter IPDM E/R
Rear window defogger Rear window defogger switch IPDM E/R
Air conditioner switch signal Front air control ECM
Blower fan switch signal Front air control ECM
Low tire pressure warning system Remote keyless entry receiver
Combination meter
Display control unit
Trailer tow (if equipped) Combination switch Trailer turn signal relays
Vehicle security system
Remote keyless entry receiver (keyfob)
Main power window and door lock/unlock switch
Power window and door lock/unlock switch RH
Front door lock assembly LH (key cylinder switch)
All door switches
Back door latch (door ajar switch)
IPDM E/R
Security indicator lamp
System
InputOutput
Page 783 of 3383
BL-2Revision: November 20092006 QX56
BCM Power Supply and Ground Circuit Check ...
... 59
Trouble Diagnoses ............................................... ... 60
SYMPTOM CHART ............................................. 60
Key Switch (Insert) Check ...................................... 62
Door Switch Check .............................................. ... 63
Keyfob Battery and Function Check .................... ... 65
Remote Keyless Entry Receiver System Check .. ... 66
ACC Power Check ............................................... ... 68
IPDM E/R Operation Check ................................. ... 68
Check Hazard Function ....................................... ... 70
Check Horn Function ........................................... ... 70
Check Headlamp Function .................................. ... 70
Check Map Lamp Illumination Function .............. ... 70
ID Code Entry Procedure .................................... ... 71
KEYFOB ID SET UP WITH CONSULT-II ......... ... 71
KEYFOB ID SET UP WITHOUT CONSULT-II .. ... 73
Keyfob Battery Replacement ............................... ... 74
VEHICLE SECURITY (THEFT WARNING) SYSTEM ... 75
Component Parts and Harness Connector Location ... 75
System Description .............................................. ... 76
DESCRIPTION ................................................. ... 76
POWER SUPPLY AND GROUND CIRCUIT .... ... 77
INITIAL CONDITION TO ACTIVATE THE SYS-
TEM .................................................................. ... 77
VEHICLE SECURITY SYSTEM ALARM OPER-
ATION ............................................................... ... 77
VEHICLE SECURITY SYSTEM DEACTIVATION ... 78
PANIC ALARM OPERATION ............................ ... 78
CAN Communication System Description ........... ... 78
Schematic ............................................................ ... 79
Wiring Diagram — VEHSEC — ........................... ... 80
.......................................................................... ... 80
.......................................................................... ... 81
.......................................................................... ... 82
.......................................................................... ... 83
.......................................................................... ... 84
Terminals and Reference Value for BCM ............. ... 85
Terminals and Reference Value for IPDM E/R ..... ... 86
CONSULT-II Function (BCM) ............................... ... 86
CONSULT-II INSPECTION PROCEDURE ....... ... 86
CONSULT-II APPLICATION ITEM .................... ... 88
Trouble Diagnosis ................................................ ... 89
WORK FLOW ................................................... ... 89
Preliminary Check ............................................... ... 90
Symptom Chart ....................................................... 91
Door Switch Check .............................................. ... 92
Hood Switch Check ............................................. ... 94
Combination Meter (Security Indicator Lamp)
Check .................................................................. ... 95
Front Door Lock Assembly LH (Key Cylinder Switch)
Check .................................................................. ... 96
Vehicle Security Horn Alarm Check ..................... ... 98
Vehicle Security Headlamp Alarm Check ............ ... 98
Door Lock/Unlock Switch Check ............................ 98
AUTOMATIC BACK DOOR SYSTEM .................... ... 99
Component Parts and Harness Connector Location ... 99
System Description .............................................. .100
OPERATION DESCRIPTION ........................... .100
Schematic ............................................................ .105Wiring Diagram — B/CLOS — .............................
.106
Terminals and Reference Value for Back Door Con-
trol Unit ................................................................. . 111
Terminals and Reference Value for BCM ............. .112
Trouble Diagnosis Procedure ............................... .113
Self-Diagnosis Procedures .................................. .113
INPUT SIGNAL CHECK MODE ........................ .113
OPERATING CHECK MODE ............................ .113
Diagnosis Chart ................................................... .114
Back Door Power Supply and Ground Circuit
Inspection ............................................................. .115
Power Liftgate Switch System Inspection ............ .116
GLASS HATCH AJAR SWITCH CHECK .......... .117
Back Door Close (Close) Switch System Inspection .118
Back Door Close (Cancel) Switch System Inspec-
tion ....................................................................... .119
Pinch Strip System Inspection ............................. .121
Back Door Warning Chime System Inspection .... .122
Half-Latch Switch System Inspection ................... .122
Open Switch System Inspection .......................... .123
Close Switch System Inspection .......................... .124
Back Door Handle Switch System Inspection ...... .125
Cinch Latch Motor System Inspection ................. .126
DOOR ..................................................................... .128
Fitting Adjustment ................................................ .128
FRONT DOOR .................................................. .128
REAR DOOR .................................................... .128
STRIKER ADJUSTMENT ................................. .128
Removal and Installation ...................................... .129
FRONT DOOR .................................................. .129
REAR DOOR .................................................... .129
BACK DOOR .................................................... .130
FRONT DOOR LOCK ............................................. .131
Component Structure ........................................... .131
Removal and Installation ...................................... .131
REMOVAL ......................................................... .131
INSTALLATION ................................................. .133
Disassembly and Assembly ................................. .133
DOOR KEY CYLINDER ASSEMBLY ................ .133
REAR DOOR LOCK ............................................... .134
Component Structure ........................................... .134
Removal and Installation ...................................... .134
REMOVAL ......................................................... .134
INSTALLATION ................................................. .134
BACK DOOR LOCK ............................................... .135
Power Back Door Opener .................................... .135
REMOVAL ........................................................ .135
INSTALLATION ................................................ .135
Door Lock Assembly ............................................ .136
REMOVAL ........................................................ .136
INSTALLATION ................................................ .136
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ..................................................................... .137
Component Parts and Harness Connector Location .137
System Description .............................................. .138
System Composition ............................................ .138
ECM Re-communicating Function ....................... .139
Wiring Diagram — NATS — ................................. .140
Terminals and Reference Value for BCM ............. .141
Page 834 of 3383
REMOTE KEYLESS ENTRY SYSTEMBL-53
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Terminals and Reference Value for BCMEIS005ZU
Te r m i n a l Wire
Color Item
Condition Voltage (V)
(Approx.)
11 O Ignition switch (ACC or ON) Ignition switch (ACC or ON position) Battery voltage
12 R/L Front door switch RH Door open (ON) → Door close (OFF) Battery voltage → 0
13 GR Rear door switch RH Door open (ON) → Door close (OFF) Battery voltage → 0
18 P Remote keyless entry
receiver ground —
0
19 V/W Remote keyless entry
receiver (Power supply)
Ignition switch OFF
20 G/W Remote keyless entry
receiver signal (Signal) Stand-by (keyfob buttons released)
When remote keyless entry receiver
receives signal from keyfob (keyfob
buttons pressed)
37 B/R Key switch and key lock sole-
noid (insert) Key inserted in IGN key cylinder (ON)
→
Key removed from IGN key cylinder
(OFF) Battery voltage
→ 0
38 W/L Ignition switch (ON or
START) Ignition switch (ON or START posi-
tion)
Battery voltage
39 L CAN-H ——
40 P CAN-L ——
43 R/B Back 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
56 R/G Battery saver
(Interior lamp) Battery saver does operated →
Does
not operated (ON → OFF) Battery voltage
→ 0
57 Y/R Battery power supply —Battery voltage
59 G Front door lock assembly LH
(actuator) (unlock) Door lock & unlock switch
(Neutral
→ Unlock) 0
→ Battery voltage
60 G/B Turn signal LH When doors are locked or unlocked
using keyfob (OFF →
ON) *2 0
→ Battery voltage
61 G/Y Turn signal RH When doors are locked or unlocked
using keyfob (OFF →
ON) *2 0
→ Battery voltage
62 R/W Step lamp LH and RH Step lamp ON
0
Step lamp OFF Battery voltage
LIIA1893E
LIIA1894E
LIIA1895E
Page 835 of 3383
BL-54
REMOTE KEYLESS ENTRY SYSTEM
Revision: November 20092006 QX56
*1: when room lamp switch is in "DOOR" position.
*2: when hazard reminder is ON.
Terminals and Reference Value for IPDM E/REIS005ZV
*: when horn reminder is ON.63 L Room lamp
Room lamp ON *1
Battery voltage
Room Lamp OFF *1 0
65 V All door lock actuators (lock) Door lock & unlock switch
(Neutral
→ Lock) 0
→ Battery voltage
66 G/Y Front door lock actuator RH,
rear door lock actuators LH/
RH and back door lock actu-
ator (unlock) Door lock & unlock switch
(Neutral
→ Unlock) 0
→ Battery voltage
67 B Ground —0
69 W/R Rear power window power
supply —
Battery voltage
70 W/B Battery power supply —Battery voltage
Te r m i n a l
Wire
Color Item
Condition Voltage (V)
(Approx.)
Te r m i n a l Wire
Color Item
Condition Voltage (V)
(Approx.)
38 B Ground —0
39 L CAN-H ——
40 P CAN-L ——
45 G/W Horn relay When doors locks are operated
using keyfob (OFF →
ON) * Battery voltage
→ 0
59 B Ground —0
Page 841 of 3383
BL-60
REMOTE KEYLESS ENTRY SYSTEM
Revision: November 20092006 QX56
3. CHECK GROUND CIRCUIT
Check continuity between BCM connector M20 terminal 67 and
ground.
OK or NG
OK >> Power supply and ground circuit is OK.
NG >> Repair or replace harness.
Trouble DiagnosesEIS00601
SYMPTOM CHART
NOTE:
Always check the "Trouble Diagnosis Procedure" before troubleshooting. Refer to BL-59, "Trouble Diag-
nosis Procedure" .
Always check keyfob battery before replacing keyfob. Refer to BL-65, "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.
ConnectorTerminals
Continuity
(+) (-)
M20 67Ground Yes
LIIA1040E
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-65
2. Check BCM and keyless receiver.
BL-66
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-652. Key switch and key lock solenoid (insert) check
BL-62
3. Door switch checkBL-63
4. ACC power checkBL-68
5. Replace BCM.BCS-20
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-16, "
POWER DOOR LOCK SYSTEM" )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-65
2. Replace BCM.
BCS-20
Hazard and horn reminder does not activate prop-
erly 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-57,
"Active
Te s t"
2. Door switch check
BL-63
3. Replace BCM.BCS-20
Page 842 of 3383
REMOTE KEYLESS ENTRY SYSTEMBL-61
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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-57
2. Check hazard function with hazard switch
—
3. Replace BCM. BCS-20
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-57
2. Check horn function with horn switch
—
3. IPDM E/R operation check BL-68
4. Replace BCM.BCS-20
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-65
2. Key switch (insert) check
BL-62
3. Check that glass hatch is closed —
4. Remote keyless entry receiver system BL-66
5. Replace BCM.BCS-20
Room lamp, ignition keyhole illumination and step
lamp operation do not activate properly.1. Room lamp operation check
BL-70
2. Ignition keyhole illumination operation checkBL-70
3.Step lamp operation checkLT- 1 3 5
4. Door switch check BL-63
5. Replace BCM.BCS-20
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-65
2. Key switch and key lock solenoid (insert) check
BL-62
3. Replace BCM.BCS-20
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-57
2. Replace BCM.
BCS-20
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-57
2. Check power window function with switch
—
3. Replace BCM. BCS-20
SymptomDiagnoses/service procedureReference
page
Page 846 of 3383
REMOTE KEYLESS ENTRY SYSTEMBL-65
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4. CHECK BACK DOOR SWITCH GROUND
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 CheckEIS00604
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. 8 - Ground
: Continuity should exist.
LIIA0828E
Voltage: 2.5V - 3.0V
SEL237W
Page 855 of 3383
BL-74
REMOTE KEYLESS ENTRY SYSTEM
Revision: November 20092006 QX56
NOTE:
If a keyfob is lost, the ID code of the lost keyfob must be erased to prevent unauthorized use. A specific ID
code can be erased with CONSULT-II. However, when the ID code of a lost keyfob is not known, all con-
troller ID codes should be erased. After all ID codes are erased, the ID codes of all remaining and/or new
keyfobs must be re-registered.
To erase all ID codes in memory, register one ID code (keyfob) five times. After all ID codes are erased,
the ID codes of all remaining and/or new keyfobs must be re-registered.
When registering an additional keyfob, the existing ID codes in memory may or may not be erased. If five
ID codes are stored in memory, when an additional code is registered, only the oldest code is erased. If
less than five ID codes are stored in memory, when an additional ID code is registered, the new ID code is
added and no ID codes are erased.
If you need to activate more than two additional new keyfobs, repeat the procedure “Additional ID code
entry ” for each new keyfob.
Entry of maximum five ID codes is allowed. When more than five ID codes are entered, the oldest ID code
will be erased.
Even if same ID code that is already in the memory is input, the same ID code can be entered. The code
is counted as an additional code.
Keyfob Battery ReplacementEIS0060D
LIIA1514E
Page 867 of 3383
BL-86
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: November 20092006 QX56
Terminals and Reference Value for IPDM E/REIS0060K
1*: when horn reminder is ON.
2*: L/W is for USA.
3*: Y is for Canada.
CONSULT-II Function (BCM)EIS0060L
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II INSPECTION 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.
Te r m i n a l Wire
Color Item
Condition Voltage (V)
(Approx.)
38 B Ground —0
39 L CAN-H ——
40 P CAN-L ——
41 Y/B Hood switch Hood closed
OFF 0V
Hood open ONBattery voltage
45 G/W Horn relay When doors locks are operated
using keyfob (OFF →
ON) *1 Battery voltage
→ 0V
52 L Headlamp low (LH) Ignition
SW ON Lighting
switch
2ND posi-
tion OFF
0V
ON Battery voltage
54 R/Y Headlamp low (RH) Ignition
SW ON Lighting
switch
2ND posi-
tion OFF
0V
ON Battery voltage
55 G Headlamp high (LH) Ignition
SW ON Lighting
switch
HIGH or
PA S S
position OFF
0V
ON Battery voltage
56 L/W *2
Y *3 Headlamp high (RH) Ignition
SW ON Lighting
switch
HIGH or
PA S S
position OFF
0V
ON Battery voltage
59 B Ground —0
BCM
diagnostic test item Diagnostic mode
Description
Inspection by part WORK SUPPORT
Supports 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 TEST Operation of electrical loads can be checked by sending drive signal to
them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The 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.