Infiniti FX35, FX50 (S51). Manual - part 1444

 

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Infiniti FX35, FX50 (S51). Manual - part 1444

 

 

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ELECTRICAL & POWER CONTROL

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SECTION 

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CONTENTS

POWER SUPPLY, GROUND & CIRCUIT ELEMENTS

POWER SUPPLY & GROUND CIRCUIT

BASIC INSPECTION  ....................................

3

BATTERY ............................................................

3

How to Handle Battery  ..............................................

3

Work Flow  .................................................................

5

DTC/CIRCUIT DIAGNOSIS  ..........................

6

POWER SUPPLY ROUTING CIRCUIT  ...............

6

Wiring Diagram - BATTERY POWER SUPPLY - ......

6

Wiring Diagram - BATTERY POWER SUPPLY 
FUSIBLE LINK No. L -  ............................................

25

Wiring Diagram - BATTERY POWER SUPPLY 
FUSE No. 6 - ...........................................................

32

Wiring Diagram - BATTERY POWER SUPPLY 
FUSE No. 7 - ...........................................................

36

Wiring Diagram - BATTERY POWER SUPPLY 
FUSE No. 10 - .........................................................

38

Wiring Diagram - BATTERY POWER SUPPLY 
FUSE No. 11 - .........................................................

42

Wiring Diagram - BATTERY POWER SUPPLY 
FUSE No. 34 - .........................................................

47

Wiring Diagram - BATTERY POWER SUPPLY 
FUSE No. 50 - .........................................................

53

Wiring Diagram - BATTERY POWER SUPPLY 
FUSE No. 53 - .........................................................

63

Wiring Diagram - ACCESSORY POWER SUP-
PLY -  .......................................................................

68

Wiring Diagram - ACCESSORY POWER SUP-
PLY FUSE No. 19 -  .................................................

74

Wiring Diagram - IGNITION POWER SUPPLY - ....

81

Wiring Diagram - IGNITION POWER SUPPLY 
FUSE No. 3 - ...........................................................

97

Wiring Diagram - IGNITION POWER SUPPLY 
FUSE No. 4 - .........................................................

107

Wiring Diagram - IGNITION POWER SUPPLY 
FUSE No. 44 - .......................................................

110

Wiring Diagram - IGNITION POWER SUPPLY 
FUSE No. 45 - .......................................................

118

Wiring Diagram - IGNITION POWER SUPPLY 
FUSE No. 46 -  .......................................................

125

Fuse .......................................................................

128

Fusible Link  ...........................................................

128

Circuit Breaker .......................................................

128

OPTION HARNESS  ........................................

129

Wiring Diagram - OPTION HARNESS -  ................

129

HARNESS LAYOUT  .......................................

134

How To Read Harness Layout  ..............................

134

Outline ...................................................................

135

Main Harness  ........................................................

136

Engine Room Harness  ..........................................

137

Engine Control Harness (VQ35HR) .......................

139

Engine Control Harness (VK50VE)  .......................

141

Body Harness  ........................................................

143

Body No. 2 Harness  ..............................................

144

Room Lamp Harness .............................................

145

Front Door Harness (LH Side) ...............................

146

Front Door Harness (RH Side)  ..............................

147

Rear Door Harness (LH Side)  ...............................

148

Rear Door Harness (RH Side) ...............................

149

Back Door Harness  ...............................................

150

HARNESS CONNECTOR  ...............................

151

Description .............................................................

151

STANDARDIZED RELAY  ...............................

154

Description .............................................................

154

FUSE BLOCK - JUNCTION BOX (J/B)  ..........

156

Fuse, Connector and Terminal Arrangement  ........

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FUSE, FUSIBLE LINK AND RELAY BOX ......

157

Fuse and Fusible Link Arrangement ......................

157

IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM)  ..............

158

Fuse, Connector and Terminal Arrangement  ........

158

PRECAUTION ............................................

159

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BATTERY

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< BASIC INSPECTION >

[POWER SUPPLY & GROUND CIRCUIT]

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BASIC INSPECTION

BATTERY

How to Handle Battery

INFOID:0000000005240733

CAUTION:

• If it becomes necessary to start the engine with a booster battery and jumper cables, use a 12-volt

booster battery.

• After connecting battery cables, ensure that they are tightly clamped to battery terminals for good

contact.

• Never add distilled water through the hole used to check specific gravity.

METHODS OF PREVENTING OVER-DISCHARGE

The following precautions must be taken to prevent over-discharging a battery.

• The battery surface (particularly its top) should always be kept

clean and dry.

• The terminal connections should be clean and tight.
• At every routine maintenance, check the electrolyte level.

This also applies to batteries designated as “low maintenance” and
“maintenance-free”.

• When the vehicle is not going to be used over a long period of

time, disconnect the battery cable from the negative terminal. (If
the vehicle has an extended storage switch, turn it off.)

• Check the charge condition of the battery.

Periodically check the specific gravity of the electrolyte. Keep a
close check on charge condition to prevent over-discharge.

CHECKING ELECTROLYTE LEVEL

WARNING:

Never allow battery fluid to come in contact with skin, eyes, fabrics, or painted surfaces. After touch-
ing a battery, never touch or rub your eyes until you have thoroughly washed your hands. If acid con-
tacts eyes, skin or clothing, immediately flush with water for 15 minutes and seek medical attention.

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< BASIC INSPECTION >

[POWER SUPPLY & GROUND CIRCUIT]

BATTERY

• Remove the cell plug using a suitable tool.
• Add distilled water up to the MAX level.

Sulphation

A battery will be completely discharged if it is left unattended
for a long time and the specific gravity will become less than
1.100. This may result in sulphation on the cell plates.
To determine if a battery has been “sulphated”, note its voltage
and current when charging it. As shown in the figure, less cur-
rent and higher voltage are observed in the initial stage of
charging sulphated batteries.
A sulphated battery may sometimes be brought back into ser-
vice by means of a long, slow charge, 12 hours or more, fol-
lowed by a battery capacity test.

SPECIFIC GRAVITY CHECK

1.

Read hydrometer and thermometer indications at eye level.

2.

Use the chart below to correct your hydrometer reading accord-
ing to electrolyte temperature.

Hydrometer Temperature Correction

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Battery electrolyte temperature [

°

C (

°

F)]

Add to specific gravity reading

71 (160)

0.032

66 (150)

0.028

60 (140)

0.024

54 (130)

0.020

49 (120)

0.016

43 (110)

0.012

38 (100)

0.008

32 (90)

0.004

27 (80)

0

21 (70)

−

0.004

16 (60)

−

0.008

10 (50)

−

0.012

4 (40)

−

0.016

−

1 (30)

−

0.020

−

7 (20)

−

0.024

 

 

 

 

 

 

 

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