Infiniti F50. Manual - part 711

2003 Q45 – Quick Reference – Electrical

3

2003 Q45 – VQ Engine

PREPARATION

Make sure that the following parts are in order.

1. Battery
2. Ignition system
3. Engine oil and coolant levels
4. Fuse
5. ECM harness connector
6. Vacuum hoses
7. Air intake system (Oil filler cap, oil level, etc.)
8. Fuel pressure
9. Engine compression
10. Throttle valve
11. Evaporative emission canister purge control valve.

Note:

•

  On A/C equipped vehicles, turn A/C "Off" for testing.

•

  Transmission should be in "Park" or "Neutral".

•

  "CO" probe should be inserted into exhaust approximately 16 inches.

•

  Turn off headlamps, heater blower, rear defogger, etc.

•

  Front wheels pointed straight.

•

  Perform inspection with cooling fans "Off".

2003 Q45 – Quick Reference – Electrical

4

2003 Q45 – A/T

RE5R05A

Trans Code

90x69

A/T Fluid Type

Nissan Matic 'J' ONLY (P/N 999MP-MTJ00P)

Oil Capacity

10 7/8 qt

A/T Cooler Type

Fin Type Structure

A/T Dipstick Tool # 

J-45475

Up-Shift Schedule Range (at normal operating temp.)  mph(km/h)

Half Throttle

Full Throttle

D

1

 

→

→

→

→

 D

2 

29 - 31 (22 - 26)

36 - 39 (64 - 68)

D

2

 

→

→

→

→

 D

3

44 - 49 (59 - 67)

56 - 61 (95 - 103)

D

3

 

→

→

→

→

 D

4

66 - 73 (100 - 110)

84 - 90 (147 - 157)

D

4

 

→

→

→

→

 D

5

84 - 90 (153 - 163)

125 - 131 (219 - 229)

Complete Clutch Lock-Up   mph(km/h)

Lock-up ON

Lock-up OFF

Closed Throttle

35 - 40 (71 - 79)

33 - 38 (53 - 61)

Half Throttle

104 - 109 (191 – 199)

81 - 86 (136 - 144)

Slip Lock-Up 

mph(km/h)

Closed Throttle 

Lock-up ON

Lock-up OFF

3

RD

 Gear

23 - 28 (27 - 35)

21 - 26 (24 - 32)

4

th

 Gear

23 - 28 (39 - 47)

21 - 26 (36 - 44)

5

th

 Gear

27 - 32 (48 - 56)

25 - 30 (45 - 53)

Stall Rpm
R, D, 2, 1 position

2,300 - 2,600 rpm

Line Pressure   psi(kg/cm

2

)

At Curb Idle

At Stall rpm

R - Position

57 - 64 (4.0 - 4.5)

247 - 274 (17.3 - 19.3)

D,M - Position

54 - 61 (3.8 - 4.3)

190 - 218 (13.3 - 15.3)

Solenoid Valves

Resistance

Pin Number

Line Pressure Sol. Valve

3 - 9 

Ω

7

Torque Converter Clutch Sol. Valve

3 - 9 

Ω

8

Input Clutch Sol. Valve

3 - 9 

Ω

6

High & Low Rev. Clutch Sol. Valve

3 - 9 

Ω

3

Front Brake Sol. Valve

3 - 9 

Ω

5

Direct Clutch Sol. Valve

3 - 9 

Ω

4

Low Coast Brake Sol. Valve

20 - 40 

Ω

2

A/T Fluid Temp. Sensor
Condition

ATF Temp Sensor 1

ATF Temp Sensor 2

32

°

 F (0

°

 C)

2.2 V, 15 k

Ω

2.2 V, 10 k

Ω

68

°

 F (20

°

 C)

1.8 V, 6.5 k

Ω

1.7 V, 4 k

Ω

176

°

 F (80

°

 C)

0.6 V, 0.9 k

Ω

0.45 V, 0.5 k

Ω

Revolution Sensor
Test Condition: Use CONSULT-II pulse frequency measuring function.
Veh. Speed 12 mph in 1

st

 gear, with closed throttle position switch "OFF".

Turbine Rev. Sensor 1 & 2

1.3 kHz

Rev Sensor

185 Hz

Mark Actual

To Confirm

Notes

2003 Q45 – Quick Reference – Electrical

5

2003 Q45 – A/T

PRECAUTIONS

•

  Before performing any diagnostic test, vehicle should be driven for approximately 10 minutes

to raise transmission to the proper operating temperature of 122

°

 to 176

°

.

•

  During stall testing, never hold throttle wide open for more than 5 seconds at a time. Extended

stall testing can overheat transmission and cause serious damage.

•

 Nissan 

Matic 'J' ATF is the only fluid accepted for warranty, service contracts and goodwill

repairs.

•

  Before performing any internal repairs, thoroughly clean the outside of the transmission case

to prevent contamination.

•

  Use lint free cloth or towels for wiping parts.  Common shop towels can leave contaminating

fibers on the transmission parts and cause improper transmission operation.

•

  When servicing the valve body, valves, sleeves, plugs, etc. should slide along the bores in the

valve body under their own weight.

•

  Before assembly, apply a coat of ATF to all internal transmission parts. Use petroleum jelly to

protect o-rings and seals, or to hold bearings and washers in place during assembly.

Important Note: Nissan Matic 'J' must be used in performing repairs paid by Infiniti for the 2002
and later Q45, such as warranty, service contract, or good-will repairs. There will not be
reimbursement for repairs when non-genuine Nissan Matic 'J' is used.

2003 Q45 – Quick Reference – Electrical

6

2003 Q45 – Htr & A/C

AIR CONDITIONER

Compressor

Make

Calsonic Kansei  V-6

Type

Swash Plate (Variable Displacement)

Compressor Clutch
Disc-to-Pulley Clearance

0.012 - 0.024 in (0.3 - 0.6 mm)

Refrigerant
Type

HFC-134a (R134a)

Capacity

1.32 lb  (.60 kg)

Refrigerant Oil
Type

Nissan Type "S" Lub.

Capacity

6.0 fl oz

Oil to AddPer 

Evaporator

2.5 oz (75 ml)

Condenser

1.2 oz (35 ml)

*Liquid Tank

0.3 oz (10 ml)

Large Refrig. Leak

1.0 oz (30 ml)

Compressor
(*Add only if comp. is not replaced.)

Engine Idle w/A/C On
(in Neutral)

More than 700 rpm

Performance Test

Recirculating-to-Discharge Air Temp

Recirc. Air Temp. at

Discharge Air Temp. at

Blower Assy. Inlet

Center Ventilator

Relative Humidity 

F

°°°°

 (C

°°°°

)

F

°°°°

 (C

°°°°

)

50 - 60 %

77

°

(25

°

)

48 - 52

°

 (8.8 - 11.1

°

)

86

°

(30

°

)

54 - 59

°

 (12.2 - 15.1

°

)

95

°

(35

°

)

62 - 68

°

 (16.4 - 20.0

°

)

60 - 70 %

77

°

(25

°

)

52 - 56

°

 (11.1 - 13.5

°

)

86

°

(30

°

)

59 - 64

°

 (15.1 - 18.0

°

)

95

°

(35

°

)

68 - 74

°

 (20.0 - 23.2

°

)

Ambient Air Temp-to-Operating Pressure
Air temperature 

Relative Humidity 50-70%

F

°°°°

 (C

°°°°

)

High-pres. Low-pres.

86

°

(30

°

)

197.2 - 240.7 psi

30.5 - 39.2 psi

95

°

(35

°

)

214.6 - 261.0 psi

36.3 - 46.4 psi

104

°

(40

°

)

275.5 - 301.6 psi

43.5 - 52.2 psi

Mark Actual

To Confirm

Notes