Infiniti F50. Manual - part 713

2003 Q45 – Quick Reference – Electrical

11

2003 Q45 – Brakes

PRECAUTIONS

1. Never reuse drained brake fluid.
2. Be careful not to splash brake fluid on painted surfaces.
3. Use clean brake fluid to clean or wash master cylinder wheel cylinders, and disc brake calipers

parts.

4. Mineral oils such as gasoline and kerosene should not be used.  They can cause damage to

rubber parts of the hydraulic system.

5. Use flare nut wrench when removing or installing brake line fittings.
6. Always torque brake lines.
7. Always replace brake pad shims when replacing brake pads.

Warning:

Clean brake pads and shoes with a dust collector to minimize the hazard of airborne particles
or other materials.

2003 Q45 – Quick Reference – Electrical

12

2003 Q45 – Electrical

ELECTRICAL

Wire Color Code

B = Black

BR = Brown

W = White

OR = Orange

R = Red

P = Pink

G = Green

PU = Purple

L = Blue

GY = Gray

Y = Yellow

SB = Sky Blue

LG = Light Green

CH = Dark Brown

DG = Dark Green
When a wire color is striped, the base color is given first, followed
by the stripe color. Example L/W = Blue with white stripe

Battery specification:

Type

80D23L

Capacity

12 V / 52 AH

Cold cranking current

582 A

Load test at 3 

×

 AH for 15 seconds.

Battery charging rates

:

Amps

Time

50

1 hour

25

2 hours

10

5 hours

5

10 hours

Do not charge battery over 50 ampere rate.
Do not "quick charge" a fully discharged battery.
If battery electrolyte temperature rises above 140

°

F, stop charging.

Starter:

Type

M2T85171
Mitsubishi
Gear reduction type

No-load current

Less than 145 A

No-load RPM

More than 3,300

Alternator:

Type

A3TG0391
Hitachi

Nominal Rating

12 V / 110 A

Output current  A/RPM

More Than 31 /1,300

(with 13.5 V applied)

More Than 90 / 2,500
More Than 102 / 5,000

Regulated Output Voltage 14.1 - 14.7

2003 Q45 – Quick Reference – Electrical

13

Oil Pressure Switch:

Oil pressure  PSI

Engine Running

More Than 2.8 - 4.26

          NO

Less Than 2.8 - 4.26 

         YES

Bulb Specifications:

Item

Wattage (12V).

Headlamp Low

35 (D2S xenon)

                 High

55W (H1)

Front Turn Signal/Park

27 (amber)

Rear Turn Signal

21

Stop/Tail Lamp

21/5

Center Stop Lamp

18

Back-up Lamp

18

License Plate Lamp

5

Front MAP Lamp

8

Rear Personal Lamp

8

Vanity Mirror Lamp

1.4

Console Lamp

1.4

Step Lamp

2.7

Trunk Room Lamp

3.4

How to perform voltage drop test:  See Illustrations

2003 Q45 – Quick Reference – Electrical

14

2003 Q45 – Electrical

BATTERY CONDITION

Battery Sulphation:
A battery will be completely discharged if it is left unattended for a long time and the specific gravity
becomes less than 1.100.  This may result in sulphation on the cell plates.  To determine if a battery
has been sulfated, note its voltage and current when charging.  If low current and higher voltage are
observed in the initial stages of charging a sulfated battery is likely.  A sulfated battery may
sometimes be brought back into service by means of a long slow charge, 12 hours or more.

Checking Battery Specific Gravity With Hydrometer

Hydrometer temperature correction

Battery electrolyte temp.  

°°°°

C  (

°°°°

F)

Add to specific gravity reading

71 (160)

0.032

66 (150)

0.028

60 (140)

0.024

54 (129)

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 (39)

−

0.016

−

1 (30)

−

0.020

−

7 (20)

−

0.024

−

12 (10)

−

0.028

−

18 (0)

−

0.032

Corrected specific gravity

Approximate charge condition

1.260 - 1.280

Fully charged

1.230 - 1.250

3/4 charged

1.200 - 1.220

1/2 charged

1.170 - 1.190

1/4 charged

1.140 - 1.160

Almost discharged

•

  Do not quick charge a fully discharged battery.

•

  After charging, if the specific gravity of any two cells varies more then .050, the battery should be

replaced.