fuse box INFINITI QX56 2008 Factory User Guide

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ELECTRICAL & POWER CONTROL
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SECTION PG
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CONTENTS
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
PRECAUTION .......
........................................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
2
Precaution for Power Generation Variable Voltage
Control System ..........................................................
3
PREPARATION ............................................4
PREPARATION .............................................. .....4
Special Service Tool ........................................... ......4
Commercial Service Tool ..........................................4
BASIC INSPECTION ....................................5
BATTERY ....................................................... .....5
How to Handle Battery ........................................ ......5
Work Flow ........................................................... ......7
INSPECTION AND ADJUSTMENT .....................8
ADDITIONAL SERVICE WHEN REMOVING BAT-
TERY NEGATIVE TERMINAL ............................... ......
8
ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL : Special Re-
pair Requirement ................................................. ......
8
COMPONENT DIAGNOSIS ..........................9
POWER SUPPLY ROUTING CIRCUIT .......... .....9
Wiring Diagram — Battery Power Supply — ....... ......9
Wiring Diagram — Accessory Power Supply — .....17
Wiring Diagram — Ignition Power Supply — ....... ....21
Fuse .........................................................................29
Fusible Link .............................................................29
GROUND ...........................................................30
Ground Distribution ..................................................30
HARNESS .........................................................40
Harness Layout ................................................... ....40
ELECTRICAL UNITS LOCATION ....................62
Electrical Units Location ..........................................62
HARNESS CONNECTOR .................................65
Description ...............................................................65
STANDARDIZED RELAY .................................68
Description ...............................................................68
FUSE BLOCK - JUNCTION BOX (J/B) ............70
Terminal Arrangement .............................................70
FUSE, FUSIBLE LINK AND RELAY BOX ........71
Terminal Arrangement .............................................71
ON-VEHICLE REPAIR .................................73
BATTERY ..........................................................73
Removal and Installation ..................................... ....73
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .......................................... ...
74
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
74
Battery ................................................................. ....74
Revision: March 2010 2008 QX56

PG
HARNESSPG-43
< COMPONENT DIAGNOSIS >
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D4 M56 W/16 : To M201
D4 M203 W/12 : A/T shift selector
A3 M57 — : Body ground D5 M205 W/32 : DVD player
F2 M58 B/6 : Intake door motor D5 M207 BR/20 : Console power socket
F3 M59 BR/2 : Glove box lamp C4 M208 BR/20 : To M69
G3 M60 W/6 : Fuse block (J/B) C5 M209 W/2: Inside key antenna 2 (rear of center
console)
C3 M61 — : Body ground C4 M210 GR/2: Inside key antenna 3 (front of center
console)
F4 M62 B/2 : Front blower motor C4 M212 W/6 : Rear heated seat switch LH
D4 M63 BR/20 : To M251 C4 M213 BR/6 : Rear heated seat switch RH
D4 M64 BR/24 : To M202 Console switch sub-harness
F2 M65 W/4 : To M301 D4 M251 BR/20 : To M63
G3 M66 BR/1 : To E33 D4 M252 BR/6 : Front heated seat switch RH
C3 M69 BR/20 : To M208 C4 M253 GR/6 : VDC OFF switch
A2 M70 W/40 : Intelligent key unit C3 M255 W/6 : Front heated seat switch LH
A2 M71 L/4 : Heated steering relay C4 M256 B/2 : A/T shift selector
D3 M73 BR/6 : Back-up lamp relay C4 M260 W/6 : Heated steering wheel switch
G3 M74 BR/24 : To D102 Optical sensor sub-harness
G3 M75 W/10 : To D101 F1 M301 W/4 : To M65
A3 M76 W/6 : Electric brake (pre-wiring) D1 M302 B/4 : Optical sensor
E2 M77 Y/4 : Front passenger air bag module
(service replacement) Antenna amp. sub-harness
G3 M78 BR/2 : To M550 D3 M550 BR/2 : To M78
E2 M79 — : Body ground D3 M551 BR/3 : To M601
C1 M80 B/2 : Resistor D3 M601 GR/3 : To M551
E3 M81 GR/10 : Shift lock control unit D3 M602 W/2 : Antenna amp.
A3 M82 GR/2 : Circuit breaker-2
Revision: March 2010 2008 QX56

PG-70
< COMPONENT DIAGNOSIS >
FUSE BLOCK - JUNCTION BOX (J/B)
FUSE BLOCK - JUNCTION BOX (J/B)
Terminal ArrangementINFOID:0000000001744678
AWMIA0898GB
Revision: March 20102008 QX56

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FUSE, FUSIBLE LINK AND RELAY BOXPG-71
< COMPONENT DIAGNOSIS >
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FUSE, FUSIBLE LINK AND RELAY BOX
Terminal ArrangementINFOID:0000000001744679
FUSE AND FUSIBLE LINK BOX
AAMIA0217GB
Revision: March 2010
2008 QX56

PG-72
< COMPONENT DIAGNOSIS >
FUSE, FUSIBLE LINK AND RELAY BOX
FUSE AND RELAY BOX
ALMIA0223GB
Revision: March 20102008 QX56

SE-18
< COMPONENT DIAGNOSIS >
THIRD SEAT
THIRD SEAT
Power Supply and Ground Circuit Check for Third Row Power Folding Seat Control
Unit
INFOID:0000000001735718
1.CHECK FUSES AND FUSIBLE LINK
Check for blown fuses or fusible link.
Are any fuses or fusible links blown?
YES >> Install new fuse. Eliminate cause of malfunction if fuse blows again.
NO >> GO TO 2
2.POWER SUPPLY CIRCUIT CHECK
1. Disconnect third row power folding seat control unit connectors B401 and B402.
2. Check voltage between third row power folding seat control unit harness connectors B401, B402 terminals 1, 8, 13, 14 and
ground.
Are the inspection results normal?
YES >> GO TO 3
NO >> Check harness for open between third row power folding seat control unit and fuse or fusible link.
3.GROUND CIRCUIT CHECK
1. Turn ignition switch OFF.
2. Check continuity between third row power folding seat control unit harness connector B402 terminals 16, 18, 21 and ground.
Do all terminals have ground?
YES >> Inspection End.
NO >> Check harness for ground.
Unit Power source Fuse or Fusible Link Location
Third row power folding seat control unit Battery
F
Fuse and fusible link box
19 Fuse block (J/B)
Ignition switch ON or START 14
TerminalsIgnition switch position
(+) (–) OFF ON START
Connector Terminal
A: B401 1
Ground Battery
voltage
80 VBattery
voltage
B: B402 13
Battery
voltage
14 Battery
voltage
ALJIA0274ZZ
Te r m i n a l s
Continuity
(+)
(–)
Connector Terminal
B402 16
Ground Yes
18
21
ALJIA0275ZZ
Revision: March 2010 2008 QX56

WCS-22
< COMPONENT DIAGNOSIS >
KEY SWITCH SIGNAL CIRCUIT
KEY SWITCH SIGNAL CIRCUIT
DescriptionINFOID:0000000001697685
Transmits a key switch signal to the BCM.
Component Function CheckINFOID:0000000001697686
1.CHECK BCM INPUT SIGNAL
Select “DATA MONITOR” for “BCM” and check the “KEY ON SW” monitor value.
>> Inspection End.
Diagnosis ProcedureINFOID:0000000001697687
1.CHECK FUSE
Check if the key switch and ignition knob switch 10A fuse (No. 62, located in the fuse and relay box) is blown.
Is the fuse blown?
YES >> Be sure to repair the cause of malfunction before installing new fuse.
NO >> GO TO 2
2.CHECK BCM INPUT SIGNAL
Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES >> Inspection End.
NO >> GO TO 3
3.CHECK KEY SWITCH CIRCUIT
1. Disconnect BCM and key switch and ignition knob switch con- nectors.
2. Check continuity between BCM harness connector M18 (A) and key switch and ignition knob switch harness connector M12 (B).
3. Check continuity between BCM harness connector M18 (A) and ground.KEY ON SW
When key is inserted into key cylinder : ON
When key is removed from key cylinder : OFF
Te r m i n a l s
ConditionVo l ta g e
(Approx.)
(+)
(−)
BCM
connector Te r m i n a l
M18 37 Ground Key is inserted Battery voltage
Key is removed
0
PKIC0721E
AB
Continuity
Connector Terminal Connector Terminal
M183 7M 12 4 Y es
A GroundContinuity
Connector Terminal
M18 37 No
AWNIA0159ZZ
Revision: March 2010 2008 QX56