Infiniti Q45 (FY33). Manual — part 5

TAT009M

GI

MA

EM

LC

EC

FE

PD

FA

RA

BR

ST

RS

BT

HA

EL

IDX

OVERALL SYSTEM

Wiring Diagram (Cont’d)

AT-17

Cross-sectional View

SAT507I

OVERALL SYSTEM

AT-18

Hydraulic Control Circuits

SAT508I

GI

MA

EM

LC

EC

FE

PD

FA

RA

BR

ST

RS

BT

HA

EL

IDX

OVERALL SYSTEM

AT-19

Shift Mechanism

The automatic transmission uses compact, dual planetary gear systems to improve power-transmission
efficiency, simplify construction and reduce weight.
It also employs an optimum shift control and superwide gear ratios. They improve starting performance and
acceleration during medium and high-speed operation.
Two one-way clutches are also employed: one is used for the forward clutch and the other for the low clutch.
These one-way clutches, combined with four accumulators, reduce shifting shock to a minimum.

CONSTRUCTION

SAT509I

q

1

Torque converter clutch piston

q

2

Torque converter

q

3

Oil pump

q

4

Input shaft

q

5

Brake band

q

6

Reverse clutch

q

7

High clutch

q

8

Front pinion gear

q

9

Front sun gear

q

10

Front internal gear

q

11

Front planetary carrier

q

12

Rear sun gear

q

13

Rear pinion gear

q

14

Rear internal gear

q

15

Rear planetary carrier

q

16

Forward clutch

q

17

Forward one-way clutch

q

18

Overrun clutch

q

19

Low one-way clutch

q

20

Low & reverse brake

q

21

Parking pawl

q

22

Parking gear

q

23

Output shaft

OVERALL SYSTEM

AT-20