fuse INFINITI QX56 2010 Factory Service Manual

ADP-46
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
BCM
BCM : Diagnosis ProcedureINFOID:0000000005370325
Regarding Wiring Diagram information, refer to BCS-49, "Wiring Diagram".
1. CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not blown.
Is the fuse blown?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit.
NO >> GO TO 2
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
Terminal No. Signal nameFuses and fusible link No.
57 Battery power supply 22 (15A)
70 F (50A)
11 Ignition ACC or ON 4 (10A)
38 Ignition ON or START 59 (10A)
ConnectorTe r m i n a l s
Power
source Condition
Voltage (V) (Ap-
prox.)
(+) (-)
M18 11 Ground
ACC
power
supply Ignition
switch
ACC or ON Battery voltage
38 Ground Ignition
power
supply Ignition
switch ON or START Battery voltage
M20 57 Ground
Battery
power
supply Ignition
switch
OFF Battery voltage
70 Ground Battery
power
supply Ignition
switch OFF Battery voltage
LIIA2415E
Revision: April 20092010 QX56

POWER SUPPLY AND GROUND CIRCUITADP-47
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES >> Inspection End.
NO >> Repair or replace harness.
DRIVER SEAT CONTROL UNIT
DRIVER SEAT CONTROL UNIT : Diagnosis ProcedureINFOID:0000000005147478
NOTE:
Do not disconnect the battery negative terminal and the dr iver seat control unit connector until DTC is con-
firmed with CONSULT-III.
Regarding Wiring Diagram information, refer to ADP-119, "
Wiring Diagram".
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconeect driver seat control unit.
3. Check voltage between driver s eat control unit harness connec-
tor and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Check the following. • Repair or replace harness between driver seat control unit and fuse block (J/B).
• Circuit breaker.
2. CHECK GROUND CIRCUIT
Check continuity between the driv er seat control unit harness con-
nector and ground.
Is the inspection result normal?
YES >> Driver seat control unit power supply and ground circuit are OK.
BCM
GroundContinuity
Connector Terminal
M20 67 Yes
LIIA0915E
Te r m i n a l s
Power
source ConditionVoltage (V)
(Approx.)
(+)
(–)
Driver seat
control unit connector Terminal
B202 6
Ground START
power sup- ply Ignition
switch
START Battery
voltage
B203 33
Battery
power sup-
ply Ignition
switch
OFF
40
LIIA1897E
Driver seat control unit
connector Te r m i n a l
Ground Continuity
B202 32
Ye s
B203 48
PIIA4542E
Revision: April 20092010 QX56

SEAT MEMORY INDICATOR LAMPADP-113
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
Check voltage between seat memory switch harness connector and
ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Check the following. •Fuse
• Harness for open or short between memory indicator and fuse.
3. CHECK MEMORY INDICATOR
Refer to ADP-113, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 4
NO >> Replace seat memory switch. Refer to ADP-176, "
Removal and Installation".
4. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace automatic drive posit ioner control unit. Refer to ADP-175, "Removal and Installation".
NO >> Repair or replace the malfunctioning part.
Component InspectionINFOID:0000000005147575
1. CHECK SEAT MEMORY INDICATOR
1. Disconnect seat memory switch.
2. Check continuity between seat memory switch terminals.
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace seat memory switch. Refer to ADP-176, "
Removal and Installation".
Seat memory switch connector Te r m i n a l s
Voltage (V)
(Approx.)
(+) (–)
D5 5Ground Battery voltage
PIIA4595E
Te r m i n a l
Continuity
Seat memory switch
(+) (-)
6 5Y es
7
ALJIA0200ZZ
Revision: April 20092010 QX56

AV-68
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis ProcedureINFOID:0000000005146301
Regarding Wiring Diagram information, refer to
AV-116, "Wiring Diagram".
1.CHECK FUSES
Check that the following AV control unit fuses are not blown.
Are the fuses OK?
YES >> GO TO 2.
NO >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.POWER SUPPLY CIRCUIT CHECK
1. Disconnect AV control unit connectors M42 and M45.
2. Check voltage between the AV control unit connectors M42 and M45 and ground.
Are the voltage results as specified?
YES >> GO TO 3.
NO >> • Check connector housings for disconnected or loose
terminals.
• Repair harness or connector.
3.GROUND CIRCUIT CHECK
Unit Terminals Signal name Fuse No.
AV c o n t r o l u n i t 19
Battery power 31
66
68
7 Ignition switch ACC or ON 4
69
79 Ignition switch ON or START 12
(+)
(-) OFF ACC ON
Connector Terminal
M42 7Ground0V
Battery
voltage Battery
voltage
19 Ground Battery
voltage Battery
voltage Battery
voltage
M45 66 Ground
Battery
voltage Battery
voltage Battery
voltage
68 Ground Battery
voltage Battery
voltage Battery
voltage
69 Ground 0V Battery
voltage Battery
voltage
79 Ground 0V 0V Battery
voltage
AWNIA1554ZZ
Revision: April 20092010 QX56

AV-70
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
NO >> Repair harness or connector.
A/C AND AV SWITCH ASSEMBLY
A/C AND AV SWITCH ASSEMBLY : Diagnosis ProcedureINFOID:0000000005146303
Regarding Wiring Diagram information, refer to
AV-116, "Wiring Diagram".
1.CHECK FUSE
Check that the A/C and AV switch assembly fuse is not blown.
Is the fuse OK?
YES >> GO TO 2.
NO >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.POWER SUPPLY CIRCUIT CHECK
1. Disconnect A/C and AV switch assembly connector M98.
2. Check voltage between the A/C and AV switch assembly con- nector M98 and ground.
Are the voltage results as specified?
YES >> GO TO 3.
NO >> • Check connector housings for disconnected or loose
terminals.
• Repair harness or connector.
3.GROUND CIRCUIT CHECK
1. Ignition OFF.
2. Check continuity between A/C and AV switch assembly harness connector M98 and ground.
Are the continuity results as specified?
YES >> Inspection End.
NO >> Repair A/C and AV switch assembly ground.
BOSE SPEAKER AMP
BOSE SPEAKER AMP : Diagnosis ProcedureINFOID:0000000005146304
Regarding Wiring Diagram information, refer to AV-116, "Wiring Diagram".
1.CHECK FUSE
Check that the BOSE speaker amp. fuse is not blown.
Unit Terminal Signal name Fuse No.
A/C and AV switch assembly 2Ignition switch ACC or ON 4
(+)
(-) OFF ACC ON
Connector Terminal
M98 2 Ground 0V Battery
voltage Battery
voltage
ALNIA0315GB
(+) (-) Continuity
Connector Terminal
M98 1 Ground Yes
ALNIA0316GB
Revision: April 20092010 QX56

AV
POWER SUPPLY AND GROUND CIRCUITAV-71
< COMPONENT DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P
Are the fuses OK?
YES >> GO TO 2.
NO >> Be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BOSE speak er amp. connector.
3. Check voltage between BOSE speaker amp. harness connector M112 terminal 11 and ground.
Is battery voltage present?
YES >> GO TO 3.
NO >> Check harness between BOSE speaker amp. and fuse.
3.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BOSE speak er amp. connector.
3. Check continuity between BOSE speaker amp. harness connec-
tor M112 terminal 12 and ground.
Does continuity exist?
YES >> Inspection End.
NO >> Repair harness or connector.
WOOFER
WOOFER : Diagnosis ProcedureINFOID:0000000005146305
Regarding Wiring Diagram information, refer to AV-116, "Wiring Diagram".
1.CHECK FUSE
Check that the subwoofer fuse is not blown.
Is the fuse OK?
YES >> GO TO 2.
NO >> Be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK POWER SUPPLY CIRCUIT
Unit Terminal Signal name Fuse No.
BOSE speaker amp. 11Battery power 31
(+)
(-) Voltage (approx.)
Connector Terminal
M112 11 Ground Battery voltage
ALNIA0339GB
(+) (-)Continuity
Connector Terminal
M112 12Ground Yes
ALNIA0340GB
Unit Terminal Signal name Fuse No.
Subwoofer 6Battery power 17
Revision: April 20092010 QX56

AV-72
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect subwoofer connector.
3. Check voltage between subwoofer harness connector B72 ter-
minal 6 and ground.
Is battery voltage present?
YES >> GO TO 3.
NO >> Check harness between subwoofer and fuse.
3.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between subwoofer harness connector B72 terminal 5 and ground.
Does continuity exist?
YES >> Inspection End.
NO >> Repair harness or connector.
REAR VIEW CAMERA CONTROL UNIT
REAR VIEW CAMERA CONTRO L UNIT : Diagnosis ProcedureINFOID:0000000005146306
Regarding Wiring Diagram information, refer to AV-116, "Wiring Diagram".
1.CHECK FUSE
Check that the following fuses of the rear view camera control unit are not blown.
Are the fuses OK?
YES >> GO TO 2.
NO >> Be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK POWER SUPPLY CIRCUIT
Check voltage between rear view camera control unit harness con-
nector B73 and ground.
Are the voltage readings as specified?
YES >> GO TO 3.
NO >> Check harness between rear view camera control unit and fuse.
(+) (-) Voltage (approx.)
Connector Terminal
B72 6 Ground Battery voltage
ALNIA0367GB
(+) (-)Continuity
Connector Terminal
B72 5Ground Yes
ALNIA0368GB
Unit Terminals Signal name Fuse No.
Rear view camera control unit 1
Battery power 31
2 Ignition switch ACC or ON 4
Signal name Connector TerminalIgnition switch
position Value (Approx.)
Battery power supply B731OFF
Battery voltage
ACC power supply 2 ACC
ALLIA0244ZZ
Revision: April 20092010 QX56

AV-74
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
3.CHECK POWER SUPPLY CIRCUIT (REAR
VIEW CAMERA CONTROL UNIT SIDE)
1. Connect rear view camera control unit harness connector.
2. Turn ignition switch ON.
3. Check voltage between rear view camera control unit harness connector B73 and ground.
Is voltage reading approximately 6 volts?
YES >> Inspection End.
NO >> Replace rear view camera control unit. Refer to AV-189,
"Removal and Installation".
4.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear view camera harness connector.
3. Check continuity between rear view camera harness connector D504 terminal 2 and ground.
Does continuity exist?
YES >> Inspection End.
NO >> Repair harness or connector.
DVD PLAYER
DVD PLAYER : Diagnosis ProcedureINFOID:0000000005146308
Regarding Wiring Diagram information, refer to AV-116, "Wiring Diagram".
1.CHECK FUSE
Check that the DVD player fuse is not blown.
Is the fuse OK?
YES >> GO TO 2.
NO >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.POWER SUPPLY CIRCUIT CHECK
Signal name Connector Terminal Transmission
position Value (Approx.)
Camera ON signal B73 8 Reverse 6V
ALLIA0247ZZ
Signal nameContinuity
Ground Yes
ALLIA0248ZZ
UnitTerminal Signal name Fuse No.
DVD player 21
Battery power 31
24 Ignition switch ACC or ON 4
Revision: April 20092010 QX56

AV-158
< SYMPTOM DIAGNOSIS >[AUDIO SYSTEM]
NORMAL OPERATING CONDITION
NORMAL OPERATING CONDITION
DescriptionINFOID:0000000005146353
AUDIO SYSTEM
The majority of the audio troubles are the result of
outside causes (bad CD, electromagnetic interference,
etc.).
Noise
The following noise results from variations in field strength, such as fading noise and multi-path noise, or
external noise from trains and other sources. It is not a malfunction.
• Fading noise: This noise occurs because of variations in the field strength in a narrow range due to moun-
tains or buildings blocking the signal.
• Multi-path noise: This noise results from the waves s ent directly from the broadcast station arriving at the
antenna at a different time from the waves which reflect off mountains or buildings.
The vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunctioning.
Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and opera-
tion of each piece of electrical equipment, and determine the cause.
NOTE:
The source of the noise can be found easily by listening to the noise while removing the fuses of electrical
components, one by one.
Type of Noise and Possible Cause
NAVIGATION SYSTEM
Basic Operation
Vehicle Mark
Occurrence condition Possible cause
Occurs only when engine is ON. A continuous growling noise occurs. The speed of
the noise varies with changes in the engine speed. • Ignition components
The occurrence of the noise is linked with the operation of the fuel pump. • Fuel pump condenser
Noise only occurs when various
electrical components are oper-
ating. A cracking or snapping sound occurs with the op-
eration of various switches.
• Relay malfunction, AV control unit malfunc-
tion
The noise occurs when various motors are operat-
ing. • Motor case ground
• Motor
The noise occurs constantly, not just under certain conditions. • Rear defogger coil malfunction
• Open circuit in printed heater
• Poor ground of antenna feeder line
A cracking or snapping sound occurs while the vehicle is being driven, especially when
it is vibrating excessively. • Ground wire of body parts
• Ground due to improper part installation
• Wiring connections or a short circuit
Symptom
Cause Remedy
No image is shown. Display brightness adjustment is set fully to DARK
side. Adjust the display brightness.
No guide sound is heard.
Audio guide volume is too low or
too high. Volume control is set to OFF, MIN or MAX. Adjust the audio guide volume.
Audio guidance is not available while the vehicle is
driving on a dark pink route.
System is not malfunctioning.
Screen is too dark.
Motion of the image is too slow. Temperature inside the vehicle is low.
Wait until the temperature inside the vehicle
reaches the proper temperature.
Small black or bright spots appear
on the screen. Symptom peculiar to a liquid crystal display (dis-
play unit). System is not malfunction.
Revision: April 20092010 QX56

BCS
POWER SUPPLY AND GROUND CIRCUITBCS-33
< COMPONENT DIAGNOSIS > [BCM]
C
D
E
F
G H
I
J
K L
B A
O P
N
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis ProcedureINFOID:0000000005146421
Regarding Wiring Diagram information, refer to
BCS-49, "Wiring Diagram".
1. CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not blown.
Is the fuse blown?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit.
NO >> GO TO 2
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
Terminal No. Signal nameFuses and fusible link No.
57 Battery power supply 22 (15A)
70 F (50A)
11 Ignition ACC or ON 4 (10A)
38 Ignition ON or START 59 (10A)
ConnectorTe r m i n a l s
Power
source Condition Voltage (V) (Ap-
prox.)
(+) (-)
M18 11 Ground
ACC
power
supply Ignition
switch
ACC or
ON Battery voltage
38 Ground Ignition
power
supply Ignition
switch ON or START Battery voltage
M20 57 Ground
Battery
power
supply Ignition
switch OFF Battery voltage
70 Ground Battery
power
supply Ignition
switch
OFF Battery voltage
LIIA2415E
Revision: April 20092010 QX56