fuse INFINITI QX56 2006 Factory Workshop Manual

DI-18
COMBINATION METERS
Revision: November 20092006 QX56
Power Supply and Ground Circuit InspectionEKS00BC3
1. CHECK FUSES
Check for blown combination meter fuses.
Refer to DI-10, "Wiring Diagram — METER —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
4, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect combination meter connector.
2. Check voltage between combination meter harness connector terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> Check the harness for open between combination meter and fuse.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between combination meter harness connector terminal and ground.
OK or NG
OK >> Inspection End.
NG >> Repair harness or connector.
Unit Power source Fuse No.
Combination meter Battery
19
Ignition switch ON or START 14
Ignition switch ACC or ON 4
TerminalsIgnition switch position
(+) (– )OFFACC ON
Connector Terminal
M24 1
Ground 0V
Battery
voltage Battery
voltage
8 Battery
voltage Battery
voltage Battery
voltage
24 0V 0VBattery
voltage
WKIA1815E
Terminals
Continuity
(+)
(– )
Connector Terminal
M24 17 Ground Yes
WKIA1526E

DI-28
COMPASS AND THERMOMETER
Revision: November 20092006 QX56
Trouble DiagnosesEKS00GBW
PRELIMINARY CHECK FOR THERMOMETER
1. COOL DOWN CHECK
1. Turn the ignition switch to the ON position.
2. Cool down ambient sensor 2 with water or ice.
Does the indicated temperature drop?
YES >> GO TO 2.
NO >> The system is malfunctioning. Check the system following “INSPECTION/COMPASS AND THER-
MOMETER ”. Refer to DI-28, "
INSPECTION/COMPASS AND THERMOMETER" .
2. WARM UP CHECK
1. Leave the vehicle for 10 minutes.
2. With the ignition switch in the ON position, disconnect and reconnect ambient sensor 2 connector.
Does the indicated temperature rise?
YES >> The system is OK.
NO >> The system is malfunctioning. Check the system following “INSPECTION/COMPASS AND THER-
MOMETER ”. Refer to DI-28, "
INSPECTION/COMPASS AND THERMOMETER" .
INSPECTION/COMPASS AND THERMOMETER
Symptom Possible causes Repair order
No display at all 1. 10A fuse. 2. Ground circuit.
3. auto anti-dazzling inside mirror. 1. Check 10A fuse [No. 12, located in fuse block (J/B)].
Turn the ignition switch ON and verify that battery positive volt-
age is at terminal 6 of auto anti-dazzling inside mirror.
2. Check ground circuit for auto anti-dazzling inside mirror.
3. Replace auto anti-dazzling inside mirror.
Forward direction indi-
cation slips off the mark
or incorrect. 1. In manual correction mode (Bar and
display vanish).
2. Zone variation change is not done. 1. Drive the vehicle and turn at an angle of 90
°.
2. Perform the zone variation change.
Displays wrong tem-
perature when ambient
temperature is between
− 40 °C ( −40° F) and
55 °C (130 °F) 1. Check operation.
2. Ambient sensor 2 circuit.
3. Ambient sensor 2.
4. Auto anti-dazzling inside mirror.
1. Perform preliminary check shown above.
2. Check harness for open or short between ambient sensor 2 and
auto anti-dazzling inside mirror.
3. Replace ambient sensor 2.
4. Replace auto anti-dazzling inside mirror.
Displays SC or OC 1. Ambient sensor 2 circuit. 2. Ambient sensor 2.
3. Auto anti-dazzling inside mirror. 1. Check harness for open or short between ambient sensor 2 and
auto anti-dazzling inside mirror.
2. Replace ambient sensor 2.
3. Replace auto anti-dazzling inside mirror.

WARNING CHIMEDI-43
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Revision: November 2009 2006 QX56
WARNING CHIMEPFP:24814
Component Parts and Harness Connector LocationEKS00BCO
1. Fuse block (J/B)2. Fuse and fusible link box3. Fuse and relay box
4. Combination meter M24 5. Combination switch (lighting switch)
M28 6. BCM M18, M19, M20 (view with
instrument lower panel LH removed)
7. Front door switch LH B8 8. Key switch and key lock solenoid
M27 9. Seat belt buckle pre-tensioner
assembly LH (seat belt buckle
switch) B74
WKIA4594E

DI-44
WARNING CHIME
Revision: November 20092006 QX56
System DescriptionEKS00BCP
FUNCTION
Power is supplied at all times

through 50A fusible link (letter f , located in the fuse and fusible link box)

to BCM terminal 70, and

through 10A fuse [No. 19, located in the fuse block (J/B)]

to key switch and key lock solenoid terminal 3.
With ignition switch in ON or START position, power is supplied

through 10A fuse (No. 59, located in the fuse and relay box)

to BCM terminal 38.
Ground is supplied

to BCM terminal 67

through body grounds M57, M61, and M79.
NOTE:
When ignition key warning chime, light warning chime, and seat belt warning chime are required at the same
time, the priorities for each chime are the following.
1. Light warning chime
2. Ignition key warning chime
3. Seat belt warning chime
IGNITION KEY WARNING CHIME
With the key inserted in the ignition switch, the ignition switch in OFF position, and the driver's door open, the
warning chime will sound.
Power is supplied

through key switch and key lock solenoid terminal 4

to BCM terminal 37.
Ground is supplied

to BCM terminal 47

through front door switch LH terminal 2.
Front door switch LH is case grounded.
BCM detects key inserted into the ignition switch, and sends key warning signal to combination meter via CAN
communication lines. When the combination meter receives key warning signal, it sounds warning chime.
LIGHT WARNING CHIME
With the key removed from the ignition switch, the driver's door open, and the lighting switch (part of the com-
bination switch) in 1st or 2nd position, the warning chime will sound. [Except when headlamp battery saver
control operates (5 minutes after ignition switch is turned to OFF or ACC position) and headlamps do not illu-
minate.]
Signal is supplied

from combination switch (lighting switch) terminals 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10

to BCM terminals 2, 3, 4, 5, 6, 32, 33, 34, 35 and 36.
NOTE:
BCM detected lighting switch in 1st or 2nd position. Refer to BCS-3, "
COMBINATION SWITCH READING
FUNCTION" .
Ground is supplied

to BCM terminal 47

through front door switch LH terminal 2.
Front door switch LH is case grounded.
BCM detects headlamps are illuminated, and sends light warning signal to combination meter CAN communi-
cation lines. When the combination meter receives light warning signal, it sounds warning chime.
SEAT BELT WARNING CHIME
When the ignition switch is turned ON with the seat belt unfastened [seat belt buckle pre-tensioner assembly
LH (seat belt buckle switch) unfastened], warning chime will sound for approximately 6 seconds.

DI-50
WARNING CHIME
Revision: November 20092006 QX56
Preliminary CheckEKS00BCV
INSPECTION FOR POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSE AND FUSIBLE LINK
Check for blown BCM fuse or fusible link.
Refer to DI-46, "Wiring Diagram — CHIME —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
4, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connectors M18 and M20.
2. Check voltage between BCM harness connector terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between BCM and fuse.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between BCM harness connector M20 terminal 67 and ground.
OK or NG
OK >> Inspection End.
NG >> Repair harness or connector.
Unit Power source Fuse or fusible link No.
BCM Battery
f
Ignition switch ON or START 59
TerminalsIgnition switch position
(+) (– )O FFO N
Connector Terminal
M20 70
GroundBattery volt-
age Battery volt-
age
M18 38 0VBattery volt-
age
WKIA2072E
Continuity should exist.
LIIA0915E

WARNING CHIMEDI-55
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Revision: November 2009 2006 QX56
3. CHECK FRONT DOOR SWITCH LH
Check continuity between front door switch LH terminal 2 and
exposed metal of switch while pressing and releasing switch.
OK or NG
OK >> Replace the BCM. Refer to BCS-20, "BCM" .
NG >> Replace the front door switch LH.
Key Warning Chime Does Not OperateEKS00BCZ
1. CHECK FUSE
Check if the key switch fuse [No. 19, located in the fuse block (J/B)] is blown. Refer to DI-46, "
Wiring Diagram
— CHIME —" .
Is the fuse blown?
YES >> Replace the fuse. Be sure to repair the cause of malfunction before installing new fuse.
NO >> GO TO 2.
2. CHECK WARNING CHIME OPERATION
With key removed from the ignition key cylinder and the front door LH open, turn the lighting switch to 1st or
2nd position.
Does warning chime sound?
YES >> GO TO 3.
NO >> Go to DI-53, "
All Warning Chimes Do Not Operate" or DI-54, "Key Warning Chime and Light
Warning Chime Do Not Operate (Seat Belt Warning Chime Does Operate)" .
When front door switch
LH is released
: Continuity should exist.
When front door switch
LH is pressed : Continuity should not
exist.
WKIA2023E

WARNING CHIMEDI-57
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Revision: November 2009 2006 QX56
5. CHECK KEY SWITCH CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M18 terminal 37 and key switch and key lock solenoid harness connector M27
terminal 4.
3. Check continuity between BCM harness connector M18 terminal 37 and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair harness or connector.
6. CHECK KEY SWITCH POWER SUPPLY CIRCUIT
Check voltage between key switch and key lock solenoid harness
connector M27 terminal 3 and ground.
OK or NG
OK >> Replace the BCM. Refer to BCS-20, "BCM" .
NG >> Check harness for open or short between fuse and key switch and key lock solenoid.
Light Warning Chime Does Not OperateEKS00BD0
1. CHECK WARNING CHIME OPERATION
Check key warning chime and seat belt warning chime functions.
Do key warning chime and seat belt warning chime sound?
YES >> GO TO 2.
NO >> Go to DI-53, "
All Warning Chimes Do Not Operate" .
2. CHECK BCM INPUT SIGNAL
With CONSULT-II
1. Select "BCM".
2. With "DATA MONITOR" of "BUZZER", confirm "LIGHT SW 1ST" status changes when the lighting switch is moved from ON (1st
position) to OFF.
Without CONSULT-II
Check combination switch. Refer to LT- 1 0 1 , "
Combination Switch
Reading Function" .
OK or NG
OK >> Replace the BCM. Refer to BCS-20, "BCM" .
NG >> Check lighting switch. Refer to LT- 1 0 1 , "
Combination Switch Reading Function" .
Continuity should exist.
Continuity should not exist.
WKIA2074E
Battery voltage should exist.
WKIA2075E
Lighting switch ON (1st position) : LIGHT SW 1ST ON
Lighting switch OFF : LIGHT SW 1ST OFF
WKIA1877E

DI-60
REAR SONAR SYSTEM
Revision: November 20092006 QX56
REAR SONAR SYSTEMPFP:28532
Component Parts and Harness Connector LocationEKS00BD2
1. Fuse block (J/B)2. IPDM E/R E1193. Sonar buzzer M117
4. Rear sonar system OFF switch M116 5. Sonar control unit B56 6. Rear sonar sensor LH outer C102
7. Rear sonar sensor LH inner C103 8. Rear sonar sensor RH inner C104 9. Rear sonar sensor RH outer C105
10. A/T assembly F9 11. Back-up lamp relay M73
WKIA4595E

REAR SONAR SYSTEMDI-61
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Revision: November 2009 2006 QX56
System DescriptionEKS00BD3
FUNCTION
With the ignition switch in the ON or START position, power is supplied

through 10A fuse [No. 12 , located in the fuse block (J/B)]

to sonar control unit terminal 8, and

through 10A fuse (No. 51, located in the IPDM E/R)

to back-up lamp relay terminals 1 and 3.
Ground is supplied

to sonar control unit terminal 6

through body grounds B7 and B19.
With the ignition switch in the ON or START position, and the transmission gear selector lever in the R posi-
tion, power is supplied

to sonar control unit terminal 5

from back-up lamp relay terminal 5.
With power and ground supplied, transmission gear selector lever in R position, and the rear sonar system
OFF switch ON, the rear sonar system will detect obstacles within 1.8 m (5.9 ft.) of the rear sonar sensors.
The vehicle operator is notified of obstacles by varied rate of tone from the sonar buzzer depending on dis-
tance of obstacle being sensed.
REAR SONAR SYSTEM OFF SWITCH
With power and ground supplied to the sonar control unit, transmission gear selector lever in R position, the
sonar system can be disabled and the sonar buzzer silenced by momentarily pressing the rear sonar system
OFF switch. The rear sonar system OFF indicator lamp will be illuminated in the rear sonar system OFF
switch.
To disable the rear sonar system, ground is supplied

to sonar control unit terminal 13

through rear sonar system OFF switch terminal 1

through rear sonar system OFF switch terminal 2

from body grounds M57, M61, and M79.
To light the rear sonar system OFF indicator, power is supplied

from sonar control unit terminal 4

to the rear sonar system OFF switch terminal 5.
Ground is supplied

to the rear sonar system OFF switch terminal 6

from body grounds M57, M61, and M79.
The rear sonar system and buzzer will be disabled and the rear sonar system OFF indicator will be illuminated
until the ignition switch is turned OFF. When the ignition switch is turned ON, the rear sonar system will be
enabled. Depressing the rear sonar system OFF switch momentarily will enable the rear sonar system also.
Enabling the rear sonar system will cause the rear sonar system OFF indicator to go out.
SONAR BUZZER
With power supplied to the sonar control unit and the transmission gear selector lever in R position, a station-
ary object that is at least 7.0 cm (2.8 in.) wide and 1.0 m (39.0 in.) tall and that is closer than 1.8 meters (5.9 ft.)
will be detected by the rear sonar sensors, causing the sonar buzzer to sound a tone. As the vehicle moves
closer to the object, the rate of the tone will increase. When the object is less than 25.0 cm (10 in.) from the
rear bumper, the tone will sound continuously.
Power is supplied

to sonar buzzer terminal 1

from sonar control unit terminal 7.
Ground is supplied

to sonar buzzer terminal 2

from sonar control unit terminal 3.

DI-68
REAR SONAR SYSTEM
Revision: November 20092006 QX56
Preliminary CheckEKS00BD9
INSPECTION FOR POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSE
Check for blown rear sonar system fuse.
Refer to DI-63, "
Wiring Diagram — SONAR —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of problem before installing new fuse. Refer to PG-4,
"POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect sonar control unit connector.
2. Check voltage between sonar control unit connector B56 termi- nal 8 and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between sonar control unit and fuse.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between sonar control unit B56 terminal 6 and ground.
OK or NG
OK >> Inspection End.
NG >> Check harness ground circuit.
Unit Power Source Fuse
Sonar control unit ON or START 12
TerminalsIgnition switch position
(+) (-) ON or START
Connector Terminal
B56 8 Ground Battery voltage
WKIA1145E
Terminals
Continuity
(+)
(– )
Connector Terminal
B56 6 Ground Yes
WKIA1146E