2007 INFINITI QX56 fuse

NAVIGATION SYSTEM
AV-113
< SERVICE INFORMATION >
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AV
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1. Turn ignition switch OFF.
2. Check continuity between display unit harness connector M93
terminals 13, 14 and ground.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. CHECK HARNESS
1. Disconnect display control unit connector M94.
2. Check continuity between display unit harness connector M93
terminals 13, 14 and display control unit harness connector M94
terminals 5, 7.
OK or NG
OK >> Replace display control unit. Refer to AV-145, "Removal
and Installation".
NG >> Repair harness.
6.CHECK GROUND CIRCUIT
Check continuity between display unit and ground as follows.
1.
OK or NG
OK >> Inspection End.
NG >> Repair harness.
Power Supply and Ground Circuit Inspection for AV SwitchINFOID:0000000003533727
1.CHECK FUSE
Make sure the following fuses of the AV switch are not blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of blown fuse before installing new fuse. Refer to PG-
3.
2.CHECK POWER SUPPLY CIRCUITContinuity should exist.
WKIA2079E
Continuity should exist.
WKIA2080E
Te r m i n a l s
Ignition
switchContinuity
Connector Terminal —
M93 1 Ground OFF Yes
WKIA1228E
Te r m i n a l s
Power source Fuse No.
Connector Terminal
M981 Battery power 31
2 ACC power 4

AV-114
< SERVICE INFORMATION >
NAVIGATION SYSTEM
1. Disconnect AV switch connector.
2. Check voltage between connector terminals and ground as fol-
lows.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between AV switch and fuse.
3.CHECK GROUND CIRCUIT
Check continuity between AV switch and ground as follows.
OK or NG
OK >> Inspection End.
NG >> Repair or replace harness.
Vehicle Speed Signal Inspection for NAVI Control UnitINFOID:0000000003533728
1.CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector B152, combination
meter connector M24 and display control unit connector M94.
3. Check continuity between NAVI control unit harness connector
B152 (B) terminal 66 and combination meter harness connector
M24 (A) terminal 29.
4. Check continuity between NAVI control unit harness connector
B152 (B) terminal 66 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness.
2.CHECK 1: VEHICLE SPEED SIGNAL
Terminals Ignition switch position
(+)
(–) OFF ACC ON
Connector Terminal
M981
GroundBattery
voltageBattery
voltageBattery
voltage
20VBattery
voltageBattery
voltage
WKIA1767E
Te r m i n a l s
Ignition switch Continuity
Connector Terminal —
M98 5 Ground OFF Yes
WKIA1768E
Continuity should exist.
Continuity should not exist.
WKIA4445E

NAVIGATION SYSTEM
AV-117
< SERVICE INFORMATION >
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1. Turn ignition switch ON.
2. Check voltage between display control unit and ground.
OK or NG
OK >> Replace display control unit. Refer to AV-145, "Removal
and Installation".
NG >> Check harness for open or short between display control unit and IPDM E/R.
Ignition Signal Inspection for NAVI Control UnitINFOID:0000000003533732
1.CHECK IGNITION SIGNAL
1. Disconnect NAVI control unit connector B152.
2. Turn ignition switch ON.
3. Check voltage between NAVI control unit harness connector
B152 terminal 63 and ground.
OK or NG
OK >> Replace NAVI control unit. Refer to AV-145, "Removal
and Installation".
NG >> Check harness for open or short between NAVI control
unit and fuse.
Ignition Signal Inspection for Display Control UnitINFOID:0000000003533733
1.CHECK IGNITION SIGNAL
1. Disconnect display control unit connector M94.
2. Turn ignition switch ON.
3. Check voltage between display control unit harness connector
M94 terminal 12 and ground.
OK or NG
OK >> Replace display control unit. Refer to AV-145, "Removal
and Installation".
NG >> Check harness for open or short between display con-
trol unit and fuse.
Reverse Signal Inspection for NAVI Control UnitINFOID:0000000003533734
1.CHECK REVERSE LAMP
1. Turn ignition switch ON.
2. Place A/T selector lever into R-position. Do back-up lamps come on?
YES or NO
YES >> GO TO 2.
NO >> Check back-up lamp system. Refer to LT- 8 0
.
2.CHECK REVERSE SIGNAL
Te r m i n a l s
Lighting switch position
(+)
(–)
Connector Terminal1st or 2nd po-
sitionOFF
M94 14 GroundBattery
voltageApprox. 0V
SKIA4299E
Battery voltage should exist.
WKIA4212E
Battery voltage should exist.
WKIA1230E

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

BCS-16
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
• Check 10A fuse (No. 59, located in the fuse and relay box).
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK BCM POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connectors and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace the harness.
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.
CONSULT-II Function (BCM)INFOID:0000000003533602
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
ConnectorTe r m i n a l s
Power
sourceConditionVoltage (V) (Ap-
prox.)
(+) (-)
M1811 GroundACC
power
supplyIgnition
switch
ACC or
ONBattery voltage
38 GroundIgnition
power
supplyIgnition
switch ON
or STARTBattery voltage
M2057 GroundBattery
power
supplyIgnition
switch
OFFBattery voltage
70 GroundBattery
power
supplyIgnition
switch
OFFBattery voltage
LIIA2415E
67 - Ground : Continuity should exist.
LIIA0915E

POWER DOOR LOCK SYSTEM
BL-15
< SERVICE INFORMATION >
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POWER DOOR LOCK SYSTEM
Component Parts and Harness Connector LocationINFOID:0000000003532895
System DescriptionINFOID:0000000003532896
Power is supplied at all times
• through 50A fusible link (letter f, located in the fuse and fusible link box)
WIIA0585E

BL-16
< SERVICE INFORMATION >
POWER DOOR LOCK SYSTEM
• to BCM terminal 70
• through 15A fuse [No. 22, located in the fuse block (J/B)]
• to BCM terminal 57
• through 10A fuse [No. 19, located in the fuse block (J/B)]
• to key switch and key lock solenoid terminal 3.
With ignition key inserted, power is supplied
• through key switch and key lock solenoid terminal 4
• to BCM terminal 37.
Ground is supplied to terminal 67 of BCM through body grounds M57, M61 and M79.
When the door is locked or unlocked with main power window and door lock/unlock switch, ground is supplied
• to CPU of main power window and door lock/unlock switch
• through main power window and door lock/unlock switch terminal 17
• through grounds M57, M61 and M79.
Then main power window and door lock/unlock switch operation signal is supplied
• to BCM terminal 22
• through main power window and door lock/unlock switch terminal 14.
When the door is locked or unlocked with power window and door lock/unlock switch RH, ground is supplied
• to CPU of power window and door lock/unlock switch RH
• through power window and door lock/unlock switch RH terminal 11
• through grounds M57, M61 and M79.
Then power window and door lock/unlock switch RH operation signal is supplied
• to BCM terminal 22
• through power window and door lock/unlock switch RH terminal 16.
When the door is locked with front door lock assembly LH (key cylinder switch), ground is supplied
• to main power window and door lock/unlock switch terminal 4
• through front door lock assembly LH (key cylinder switch) terminals 1 and 5
• through grounds M57, M61 and M79.
Then front door lock assembly LH (key cylinder switch) operation signal is supplied
• to BCM terminal 22
• through main power window and door lock/unlock switch terminal 14.
When the door is unlocked with front door lock assembly LH (key cylinder switch), ground is supplied
• to main power window and door lock/unlock switch terminal 6
• through front door lock assembly LH (key cylinder switch) terminals 6 and 5
• through grounds M57, M61 and M79.
Then front door lock assembly LH (key cylinder switch) operation signal is supplied
• to BCM terminal 22
• through main power window and door lock/unlock switch terminal 14.
BCM is connected to main power window and door lock/unlock switch and power window and door lock/unlock
switch RH through a bus.
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 grounds B7 and B19.
OUTLINE

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