Mazda 6. Manual — part 33

K–3

OUTLINE , AUTOMATIC TRANSAXLE

K

Bold frames:New specifications

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OUTLINE

A6E561401030T01

•

The FN4A-EL type automatic transaxle is used.

•

The construction and operation of the FN4A-EL type automatic transaxle of the New Mazda6 (GG) is
essentially carried over from that of the current PREMACY (CP) .

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Rear planetary gear
(number of teeth)

Rear sun gear

37

Rear pinion gear

30

Rear internal gear

98

Primary gear

86

Secondary gear

82

Output gear

19

21

Ring gear

88

86

Item

Mazda6 (GG)

Current PREMACY (CP)

Engine

LF

FS

AUTOMATIC TRANSAXLE

K–4

AUTOMATIC TRANSAXLE

CROSS-SECTIONAL VIEW

A6E561401030T02

.

A6E5614T001

1

Torque converter

2

Oil pump

3

Forward clutch

4

Front planetary gear

5

Rear planetary gear

6

3-4 clutch

7

Reverse clutch

8

2-4 brake band

9

Low and reverse brake

10

One-way clutch

11

Primary gear

12

Secondary gear

13

Output gear

14

Differential

AUTOMATIC TRANSAXLE

K–5

K

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OUTLINE OF OPERATION

A6E561401030T03

•

The operation of the electronic automatic transaxle is classified into three systems: the electronic control
mechanism, the hydraulic pressure control mechanism, and the powertrain mechanism (includes the torque
converter mechanism). The operation of each system is as follows:
— Electronic control mechanism

•

According to the signals from the switches and sensors in the input system, the PCM outputs the signal
which matches the present driving condition to the linear type solenoid, ON/OFF type solenoids and the
duty-cycle type solenoids in the hydraulic pressure control mechanism.

— Hydraulic pressure control mechanism

•

According to the signals from the PCM, each solenoid operates to switch the hydraulic passages in the
control valve body and controls the clutch engagement pressure.

•

The line pressure is adjusted by the linear type pressure control solenoid. The hydraulic passages are
switched by the ON/OFF type solenoids (shift solenoids D and E.) And the clutch engagement pressure
is controlled by the duty-cycle type solenoids (shift solenoids A, B, and C).

— Powertrain mechanism

•

The driving force from the engine is transmitted through the torque converter to the transaxle.

•

The transmitted driving force operates each clutch and brake according to the clutch engagement
pressure from the duty-cycle type solenoid, and the planetary gears change the gear ratio to the
optimal driving force. The changed driving force is transmitted through the differential to the axle shaft
and then the tires.

K–6

AUTOMATIC TRANSAXLE

.

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A6E5614T002

1

Powertrain mechanism

2

Hydraulic pressure control mechanism

3

Electronic control mechanism

4

Torque converter

5

Clutches, brakes

6

Planetary gear

7

Differential

8

Control valve body

9

Shift solenoid D, E (ON/OFF type)

10

Pressure control solenoid (linear type)

11

Shift solenoid A, B, C (duty-cycle type)

12

Oil pump

13

PCM

14

Oil pressure switch signal

15

Vehicle speed

16

ATF temprature

17

Forward clutch drum revolution speed

18

Engine revolution speed

19

Throttle position signal

20

Clutches, brakes engagement, relase pressure

21

Powerflow

22

Hydraulic pressure control signal

23

Electronic signal

24

Tire