turn signal INFINITI QX56 2007 Factory Service Manual

BCM (BODY CONTROL MODULE)
BCS-13
< SERVICE INFORMATION >
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27 W/RCompressor ON sig-
nalInput ONA/C switch OFF 5V
A/C switch ON 0V
28 L/R Front blower monitor Input ONFront blower motor OFF Battery voltage
Front blower motor ON 0V
29 W/B Hazard switch Input OFFON 0V
OFF 5V
30 Y/BR Glass hatch switch Input OFFGlass hatch switch released
→ Glass hatch switch pressedBattery voltage → 0V
32 R/GCombination switch
output 5Output ONLighting, turn, wiper OFF
Wiper dial position 4
33 R/YCombination switch
output 4Output ONLighting, turn, wiper OFF
Wiper dial position 4
34 LCombination switch
output 3Output ONLighting, turn, wiper OFF
Wiper dial position 4
35 O/BCombination switch
output 2
Output ONLighting, turn, wiper OFF
Wiper dial position 4
36 R/WCombination switch
output 1
37 B/RKey switch and key
lock solenoidInput OFFKey inserted Battery voltage
Key removed 0V
38 W/L Ignition switch (ON) Input ON — Battery voltage
39 L CAN-H — — — —
40 P CAN-L — — — —
42 GRGlass hatch ajar
switchInput ONGlass hatch open 0
Glass hatch closed Battery
43 R/BBack door latch (door
ajar switch)Input OFFON (open) 0V
OFF (closed) Battery voltage Te r m i n a lWire
colorSignal nameSignal
input/
outputMeasuring condition
Reference value or waveform
(Approx.) Ignition
switchOperation or condition
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E

BCS-14
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
44 ORear wiper auto stop
switch 1Input ONRise up position (rear wiper
arm on stopper)0V
A Position (full clockwise stop
position)Battery voltage
Forward sweep (counterclock-
wise direction)Fluctuating
B Position (full counterclock-
wise stop position)0V
Reverse sweep (clockwise di-
rection)Fluctuating
47 SB Front door switch LH Input OFFON (open) 0V
OFF (closed) Battery voltage
48 R/Y Rear door switch LH Input OFFON (open) 0V
OFF (closed) Battery voltage
49 R Cargo lamp Output OFFAny door open (ON) 0V
All doors closed (OFF) Battery voltage
51 Y/BTrailer turn signal
(right)Output ON Turn right ON
52 G/B Trailer turn signal (left) Output ON Turn left ON
53 L/WGlass hatch lock actu-
atorInput OFFGlass hatch switch released
→ Glass hatch switch pressed0V → Battery voltage for 300
msec.
54 YRear wiper output cir-
cuit 2Input ONRise up position (rear wiper
arm on stopper)0V
A Position (full clockwise stop
position)0V
Forward sweep (counterclock-
wise direction)0V
B Position (full counterclock-
wise stop position)Battery voltage
Reverse sweep (clockwise di-
rection)Battery voltage
55 SBRear wiper output cir-
cuit 1Output ONOFF 0
ON Battery voltage
56 R/G Battery saver output OutputOFF30 minutes after ignition
switch is turned OFF0V
ON — Battery voltage
57 Y/R Battery power supply Input OFF — Battery voltage Te r m i n a lWire
colorSignal nameSignal
input/
outputMeasuring condition
Reference value or waveform
(Approx.) Ignition
switchOperation or condition
SKIA3009J
SKIA3009J

BCM (BODY CONTROL MODULE)
BCS-15
< SERVICE INFORMATION >
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BCM Power Supply and Ground Circuit InspectionINFOID:0000000003533601
1.CHECK FUSES AND FUSIBLE LINK
• Check 50A fusible link (letter f, located in the fuse and fusible link box).
• Check 10A fuse [No. 4, located in the fuse block (J/B)] and 15A fuse [No. 22, located in the fuse block (J/B)].
58 W/R Optical sensor Input ONWhen optical sensor is illumi-
nated3.1V or more
When optical sensor is not illu-
minated0.6V or less
59 GFront door lock as-
sembly LH actuator
(unlock)Output OFFOFF (neutral) 0V
ON (unlock) Battery voltage
60 G/B Turn signal LH Output ON Turn left ON
61 G/Y Turn signal RH Output ON Turn right ON
62 R/W Step lamp LH and RH Output OFFON (any door open) 0V
OFF (all doors closed) Battery voltage
63 LInterior room/map
lampOutput OFFAny door
switchON (open) 0V
OFF (closed) Battery voltage
65 VAll door lock actuators
(lock)Output OFFOFF (neutral) 0V
ON (lock) Battery voltage
66 G/YFront door lock actua-
tor RH, rear door lock
actuators LH/RH and
back door lock actua-
tor (unlock)Output OFFOFF (neutral) 0V
ON (unlock) Battery voltage
67 B Ground Input ON — 0V
68 W/LPower window power
supply (RAP)Output —Ignition switch ON Battery voltage
Within 45 seconds after igni-
tion switch OFFBattery voltage
More than 45 seconds after ig-
nition switch OFF0V
When front door LH or RH is
open or power window timer
operates0V
69 W/RPower window power
supplyOutput — — Battery voltage
70 W/B Battery power supply Input OFF — Battery voltage Te r m i n a lWire
colorSignal nameSignal
input/
outputMeasuring condition
Reference value or waveform
(Approx.) Ignition
switchOperation or condition
SKIA3009J
SKIA3009J

BCM (BODY CONTROL MODULE)
BCS-17
< SERVICE INFORMATION >
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CONSULT-II START PROCEDURE
Refer to GI-36, "CONSULT-II Start Procedure".
ITEMS OF EACH PART
NOTE:
CONSULT-II will only display systems the vehicle possesses.
WORK SUPPORT
BCM diagnostic
test itemDiagnostic mode Content
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the BCM for
setting the status suitable for required operation, input/output signals are received
from the BCM and received data 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
MNTRThe results 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.
System and itemCONSULT-II
displayDiagnostic test mode (Inspection by part)
WORK
SUPPORTSELF−
DIAG RE-
SULTSCAN DIAG
SUPPORT
MNTRDATA
MONITORECU
PA R T
NUMBERAC-
TIVE
TESTCON-
FIGU-
RATION
BCM BCM×× × × ×
Power door lock system DOOR LOCK×××
Rear defoggerREAR
DEFOGGER××
Warning chime BUZZER××
Room lamp timer INT LAMP×××
Remote keyless entry
systemMULTI REMOTE
ENT×××
Headlamp HEAD LAMP×××
Wiper (front/rear) WIPER×××
Turn signal lamp
Hazard lampFLASHER××
Blower fan switch signal
Air conditioner switch
signalAIR
CONDITIONER×
Combination switch COMB SW×
IVIS (NATS) IMMU××
Interior lamp battery
saverBATTERY SAV-
ER×××
Back door TRUNK××
Theft alarm THEFT ALM×××
Retained accessory
power controlRETAINED PWR×××
Oil pressure switch SIGNAL BUFFER××
Low tire pressure moni-
tor systemAIR PRESSURE
MONITOR×× × ×
Panic alarm PANIC ALARM×

BL-28
< SERVICE INFORMATION >
POWER DOOR LOCK SYSTEM
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.
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 Lock/Unlock Switch CheckINFOID:0000000003532906
1.CHECK DOOR LOCK/UNLOCK SWITCH INPUT SIGNAL
With CONSULT-II
Check door lock/unlock switch ("CDL LOCK SW", "CDL UNLOCK SW") in DATA MONITOR mode in CON-
SULT–II. Refer to BL-24, "
CONSULT-II Function (BCM)"
• When door lock/unlock switch is turned to LOCK:
• When door lock/unlock switch is turned to UNLOCK:
Without CONSULT-II
1. Remove key from ignition key cylinder.
2. Check the signal between BCM connector M18 terminal 22 and ground with oscilloscope when door lock/
unlock switch is turned to LOCK or UNLOCK.
3. Make sure the signals which are shown in the figure below can be detected during 10 seconds just after
the door lock/unlock switch is turned to LOCK or UNLOCK.
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
CDL LOCK SW :ON
CDL UNLOCK SW :ON
PIIA6538E

BL-32
< SERVICE INFORMATION >
POWER DOOR LOCK SYSTEM
Front Door Lock Assembly LH (Actuator) Check
INFOID:0000000003532908
1.CHECK DOOR LOCK ACTUATOR SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between BCM connector M20 terminals 59, 65
and ground.
OK or NG
OK >> GO TO 2.
NG >> Replace BCM. Refer to BCS-24, "
BCM".
2.CHECK DOOR LOCK ACTUATOR HARNESS
1. Disconnect BCM and front door lock assembly LH (actuator).
2. Check continuity between BCM connector M20 terminals 59, 65
and front door lock assembly LH (actuator) connector D14 termi-
nals 2, 3.
3. Check continuity between BCM connector M20 terminals 59, 65
and ground.
OK or NG
OK >> Replace front door lock assembly LH (actuator). Refer to BL-110.
NG >> Repair or replace harness.
Front Door Lock Actuator RH CheckINFOID:0000000003532909
1.CHECK FRONT DOOR LOCK ACTUATOR RH SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between BCM connector M20 terminals 65, 66
and ground.
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M2059
GroundDriver door lock/unlock
switch is turned to UN-
LOCK0 → Battery voltage
65Driver door lock/unlock
switch is turned to LOCK0 → Battery voltage
LIIA1046E
Connector Terminals Connector Terminals Continuity
M2059
D142Yes
65 3 Yes
Connector Terminals Continuity
M2059
GroundNo
65 No
LIIA1574E
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M2065
GroundDoor lock/unlock switch is
turned to LOCK0 → Battery voltage
for 300 ms
66Door lock/unlock switch is
turned to UNLOCK0 → Battery voltage
for 300 ms
LIIA1048E

POWER DOOR LOCK SYSTEM
BL-33
< SERVICE INFORMATION >
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OK or NG
OK >> GO TO 2.
NG >> Replace BCM. Refer to BCS-24, "
BCM".
2.CHECK FRONT DOOR LOCK ACTUATOR RH HARNESS
1. Disconnect BCM and front door lock actuator RH.
2. Check continuity between BCM connector M20 terminals 65, 66
and front door lock actuator RH D114 terminals 2, 3.
3. Check continuity between BCM connector M20 terminals 65, 66
and ground.
OK or NG
OK >> Replace front door lock actuator RH. Refer to BL-110.
NG >> Repair or replace harness.
Rear Door Lock Actuator RH/LH CheckINFOID:0000000003532910
1.CHECK DOOR LOCK ACTUATOR SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between BCM connector M20 terminals 65, 66
and ground.
OK or NG
OK >> GO TO 2.
NG >> Replace BCM. Refer to BCS-24, "
BCM".
2.CHECK REAR DOOR LOCK ACTUATOR LH OR RH HARNESS
1. Disconnect BCM and each door lock actuator.
Terminals Continuity
65 3 Yes
66 2 Yes
Terminals Continuity
65
GroundNo
66 No
LIIA1479E
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M2065
GroundDoor lock/unlock switch
is turned to LOCK0 → Battery voltage
for 300 ms
66Door lock/unlock switch
is turned to UNLOCK0 → Battery voltage
for 300 ms
LIIA1048E

BL-34
< SERVICE INFORMATION >
POWER DOOR LOCK SYSTEM
2. Check continuity between BCM connector M20 terminals 65, 66
and rear door lock actuator RH/LH connectors terminals 2, 3.
3. Check continuity between BCM connector M20 terminals 65, 66
and ground.
OK or NG
OK >> Replace door lock actuator. Refer to BL-113.
NG >> Repair or replace harness.
Glass Hatch Lock Actuator CheckINFOID:0000000003532911
1.CHECK GLASS HATCH LOCK ACTUATOR SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between BCM connector M19 terminal 53 and
ground.
OK or NG
OK >> GO TO 2.
NG >> Replace BCM. Refer to BCS-24, "
BCM".
2.CHECK GLASS HATCH LOCK ACTUATOR HARNESS
1. Disconnect BCM and glass hatch lock actuator.
2. Check continuity between BCM connector M19 terminal 53 and
glass hatch lock actuator connector D711 terminal 3.
3. Check continuity between BCM connector M19 terminals 53 and
ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK GLASS HATCH LOCK ACTUATOR GROUND CIRCUIT
1. Disconnect glass hatch lock actuator.
Terminals Continuity
65 3 Yes
66 2 Yes
Terminals Continuity
65
GroundNo
66 No
LIIA1480E
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M19 53 GroundGlass hatch switch is
turned to depressed0 → Battery voltage
for 300 ms
LIIA1938E
Terminals Continuity
53 3 Yes
Terminals Continuity
53 Ground No
LIIA1939E

POWER DOOR LOCK SYSTEM
BL-35
< SERVICE INFORMATION >
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2. Check continuity between glass hatch lock actuator connector
D711 terminal 1 and ground.
OK or NG
OK >> Replace glass hatch lock actuator. Refer to BL-114.
NG >> Repair or replace harness.
Front Door Lock Assembly LH (Key Cylinder Switch) CheckINFOID:0000000003532912
1.CHECK DOOR KEY CYLINDER SWITCH LH
With CONSULT-II
Check front door lock assembly LH (key cylinder switch) ("KEY CYL LK-SW") and ("KEY CYL UN-SW) in
DATA MONITOR mode with CONSULT–II. Refer to BL-24, "
CONSULT-II Function (BCM)".
• When key inserted in front key cylinder is turned to LOCK:
• When key inserted in front key cylinder is turned to UNLOCK:
Without CONSULT-II
Check voltage between main power window and door lock/unlock
switch connector D7 terminals 4, 6 and ground.
OK or NG
OK >> Front door lock assembly LH (key cylinder switch) signal is OK.
NG >> GO TO 2.
2.CHECK DOOR KEY CYLINDER SWITCH LH GROUND HARNESS
Terminals Continuity
1 Ground Yes
LIIA1940E
KEY CYL LK-SW : ON
KEY CYL UN-SW : ON
LIIA0188E
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (–)
D74
GroundNeutral/Unlock 5
Lock 0
6Neutral/Lock 5
Unlock 0
LIIA0566E

BL-38
< SERVICE INFORMATION >
REMOTE KEYLESS ENTRY SYSTEM
• to BCM terminal 70
• through 50A fusible link (letter f , located in the fuse and fusible link box).
• to BCM terminal 57
• through 15A fuse [No. 22, located in the fuse block (J/B)].
When the key is inserted in the key switch and key lock solenoid, 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 the fuse block (J/B)].
When the ignition switch is ACC or ON, power is supplied
• to BCM terminal 11
• through 10A fuse [No. 4, located in the fuse block (J/B)].
When the ignition switch is ON or START, power is supplied
• to BCM terminal 38
• through 10A fuse (No. 59, located in the fuse and relay box).
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
• 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 body grounds B7 and B19.
Keyfob signal is input into the BCM from the remote keyless entry receiver.
The remote keyless entry system controls operation of the
• power door lock
• back door opener
• interior lamp and step lamps
• panic alarm
• hazard and horn reminder
• keyless power window down (open)
• auto door lock operation
OPERATING PROCEDURE
• When the keyfob is operated, the signal from the keyfob is sent and the remote keyless entry receiver
receives the signal and sends it to the BCM. The BCM only locks/unlocks the doors if the ID number
matches. (Remote control entry functions)
• Using the keyfob, the transmitter sends radio waves to the remote keyless entry receiver, which then sends
the received waves to the BCM. Only if the ID number matches does the BCM lock/unlock the doors.
(Remote control door function)
• Unless the key is inserted into the ignition key cylinder or one of the doors is opened within 1 minute after the
UNLOCK switch on the keyfob is pressed, all the doors are automatically locked. (Auto lock function)
• When a door is locked or unlocked, the vehicle turn signal lamps flash and the horn sounds to verify opera-
tion. (Active check function)
• When the key is in the ignition key cylinder (when the key switch is ON) and one of the doors is open, the
door lock function does not work even when the door lock is operated with the keyfob.
• Keyfob ID set up is available.
• If a keyfob is lost, a new keyfob can be set up. A maximum of 5 IDs can be set up simultaneously.
Remote Control Entry Functions