Mazda RX-8. Manual - part 8

05–00–1

05

TRANSMISSION/TRANSAXLE

SECTION

05–00

Toc of SCT

OUTLINE . . . . . . . . . . . . . . . . . . 05-00
ON-BOARD DIAGNOSTIC

[SJ6A-EL] . . . . . . . . . . . . . . . . 05-02

AUTOMATIC

TRANSMISSION 
[SJ6A-EL]  . . . . . . . . . . . . . . .  05-13

AUTOMATIC TRANSMISSION

SHIFT MECHANISM  . . . . . . .  05-14

Toc of SCT

05–00

OUTLINE

TRANSMISSION/TRANSAXLE 

ABBREVIATIONS. . . . . . . . . . . . . . . . . . 05–00–1

TRANSMISSION/TRANSAXLE

FEATURES . . . . . . . . . . . . . . . . . . . . . . . 05–00–1

TRANSMISSION/TRANSAXLE 

SPECIFICATIONS . . . . . . . . . . . . . . . . .  05–00–2

Automatic Transmission . . . . . . . . . . . .  05–00–2

End of Toc

TRANSMISSION/TRANSAXLE ABBREVIATIONS

EHU050000000101

End Of Sie

TRANSMISSION/TRANSAXLE FEATURES

EHU050000000108

End Of Sie

AAS

Active Adaptive Shift

ATF

Automatic Transmission Fluid

AT

Automatic Transmission

CAN

Controller Area Network

CPU

Central Processing Unit

DC

Drive Cycle

EC-AT

Electronically Controlled Automatic Transmission

PPF

Power Plant Frame

1GR

First Gear

2GR

Second Gear

3GR

Third Gear

4GR

Fourth Gear

5GR

Fifth Gear

6GR

Sixth Gear

6-SPEED AT [SJ6A-EL]

Improved fuel economy

•

Six-speed SJ6A-EL automatic transmission has been adopted.

Improved marketability

•

Six-speed SJ6A-EL automatic transmission has been adopted.

•

The Sport AT has been adopted. With this feature up and downshifting can be performed with 
either the shift control switch on the steering wheel or with the one-touch operation of the 
selector lever.

•

A 5-6 shift inhibit control has been adopted for rapid engine warming.

Superior shift quality

•

Torque reduction control and line pressure control has been adopted.

•

Shift learning control has been adopted.

Improved driveability

•

To improve drivetrain rigidity, a closed section power plant frame (PPF) has been adopted.

•

A control feature for climbing/descending hills has been adopted, improving driveability when 
climbing/descending.

OUTLINE 

05–00–2

TRANSMISSION/TRANSAXLE SPECIFICATIONS

EHU050000000106

Automatic Transmission

End Of Sie

Item

2005MY RX-8

2006MY RX-8

Transmission type

RC4A-EL

←

SJ6A-EL

Gear ratio

1GR

2.785

←

3.538

2GR

1.545

←

2.060

3GR

1.000

←

1.404

4GR

0.694

←

1.000

5GR

—

—

0.713

6GR

—

—

0.582

Reverse

2.272

←

3.168

ATF

Type

ATF M-III or 

equivalent 

(e.g. Dexron

®

III)

←

JWS3309

Capacity (Approx. quantity)
(L {US qt, lmp qt})

8.7 {9.2, 7.7}

←

7.9 {8.4, 7.0}

Torque converter stall torque ratio

2.04:1

←

1.85:1

Hydraulic system
(Number of drive/driven plates)

Low clutch

5/5

←

—

High clutch

6/6

←

—

Reverse clutch

2/2

←

—

2-4 brake

4/4

←

—

Low and reverse brake

4/5

←

—

C1 clutch

—

—

4/4

C2 clutch

—

—

5/5

C3 clutch

—

—

4/3

C4 clutch

—

—

4/4

B1 brake

—

—

3/3

B2 brake

—

—

4/3

B3 brake

—

—

4/4

B4 brake

—

—

5/4

Front planetary gear (Number of teeth)

Sun gear

33

←

←

Pinion gear

21

←

—

Pinion gear (inner)

—

—

19

Pinion gear (outer)

—

—

18

Internal gear

75

←

—

Ring gear

—

—

75

Middle planetary gear (Number of teeth)

Sun gear

—

—

26

Pinion gear

—

—

20

Ring gear

—

—

66

Rear planetary gear (Number of teeth)

Sun gear

42

←

26

Pinion gear

17

←

20

Internal gear

75

←

—

Ring gear

—

—

66

ON-BOARD DIAGNOSTIC [SJ6A-EL]

05–02–1

05–02

05–02

ON-BOARD DIAGNOSTIC [SJ6A-EL]

ON-BOARD DIAGNOSTIC (OBD) 

SYSTEM OUTLINE [SJ6A-EL] . . . . . . .  05–02–1

ON-BOARD DIAGNOSTIC (OBD) 

SYSTEM BLOCK DIAGRAM
[SJ6A-EL]  . . . . . . . . . . . . . . . . . . . . . . .  05–02–1

MALFUNCTION DETECTION FUNCTION

[SJ6A-EL]  . . . . . . . . . . . . . . . . . . . . . . .  05–02–2

Malfunction Detection Function . . . . . .  05–02–2
DTC Table  . . . . . . . . . . . . . . . . . . . . . .  05–02–2

MEMORY FUNCTION [SJ6A-EL] . . . . . .  05–02–3

MALFUNCTION INDICATION FUNCTION

[SJ6A-EL] . . . . . . . . . . . . . . . . . . . . . . . . 05–02–3

FAIL-SAFE FUNCTION [SJ6A-EL]  . . . . . 05–02–3

Emergency Mode  . . . . . . . . . . . . . . . . . 05–02–7

PARAMETER IDENTIFICATION (PID) 

DATA MONITORING FUNCTION
[SJ6A-EL] . . . . . . . . . . . . . . . . . . . . . . . . 05–02–7

Monitor Item Table. . . . . . . . . . . . . . . . . 05–02–7

SIMULATION FUNCTION

[SJ6A-EL] . . . . . . . . . . . . . . . . . . . . . . . . 05–02–8

Simulation Item Table  . . . . . . . . . . . . . . 05–02–8

DLC-2 OUTLINE [SJ6A-EL]. . . . . . . . . . . 05–02–8

End of Toc

ON-BOARD DIAGNOSTIC (OBD) SYSTEM OUTLINE [SJ6A-EL]

EHU050200000101

•

The OBD system has the following functions: 

—

Malfunction detection function: detects malfunctions of the input/output devices and system components of 
the AT.

—

Fail-safe function: controls the output device function and input value of the sensors/switches to ensure 
minimum vehicle drivability when a failure is detected.

—

Memory function: stores the DTC when a failure is detected.

—

PID data monitoring function: monitors the input/output signal and calculated value of the TCM and sends 
the monitoring data to the scan tool.

—

Simulation function: Allows override operation of simulation items for input/output system parts preset in the 
TCM.

End Of Sie

ON-BOARD DIAGNOSTIC (OBD) SYSTEM BLOCK DIAGRAM [SJ6A-EL]

EHU050200000102

End Of Sie

TCM

CAN

CAN

PCM (CAN)

DLC-2

MIL

INPUT 
PARTS

OBD SYSTEM

MALFUNCTION 
INDICATION 
FUNCTION

MEMORY 
FUNCTION

SERIAL 
COMMUNICATION

MALFUNCTION 
DETECTION 
FUNCTION

PID DATA 
MONITORING 
FUNCTION

SIMULATION 
FUNCTION

FAIL-SAFE 
FUNCTION

TRANSAXLE CONTROL SYSTEM

INSTRUMENT 
CLUSTER

AT WARNING 
LIGHT

WDS OR 
EQUIVALENT

OUTPUT 
PARTS

E5U502ZS5001

ON-BOARD DIAGNOSTIC [SJ6A-EL]

05–02–2

MALFUNCTION DETECTION FUNCTION [SJ6A-EL]

EHU050200000103

Malfunction Detection Function

•

In the malfunction detection function, the TCM detects malfunctions in the automatic transmission while driving.

•

When vehicle driving conditions correspond with a preset malfunction detection condition, the TCM determines 
that the automatic transmission has a malfunction and stores the corresponding DTC.

•

When a malfunction is detected, stored DTCs can be retrieved using the WDS or equivalent connected to the 
DLC-2.

DTC Table

X: Available

–: N/A

DTC No.

Condition

MIL

AT 

warning 

light

DC

Memory 

function

P0601

Flash ROM malfunction

X

X

1

X

P0603

EEPROM malfunction

X

X

1

X

P0604

RAM malfunction

X

X

1

X

P0707

Transmission range (TR) switch circuit low input (short to ground)

X

X

1

X

P0708

Transmission range (TR) switch circuit high input (open circuit)

X

X

2

X

P0711

Transmission fluid temperature (TFT) sensor malfunction (stuck)

X

X

2

X

P0712

Transmission fluid temperature (TFT) sensor circuit malfunction (short to 
ground)

X

X

1

X

P0713

Transmission fluid temperature (TFT) sensor circuit malfunction (short to 
power/open circuit)

X

X

1

X

P0717

Turbine sensor circuit malfunction (open circuit/short circuit)

X

X

1

X

P0722

Vehicle speed sensor (VSS) circuit malfunction (open circuit/short circuit)

X

X

1

X

P0751

Shift solenoid A malfunction (stuck off)

X

X

2

X

P0752

Shift solenoid A malfunction (stuck on)

X

X

2

X

P0756

Shift solenoid B malfunction (stuck off)

X

X

2

X

P0757

Shift solenoid B malfunction (stuck on)

X

X

2

X

P0761

Shift solenoid C malfunction (stuck off)

X

X

2

X

P0762

Shift solenoid C malfunction (stuck on)

X

X

2

X

P0766

Shift solenoid D malfunction (stuck off)

X

X

2

X

Shift solenoid G malfunction (stuck on)

X

X

2

X

P0781

1-2 shift valve malfunction

X

X

2

X

P0813

Reverse sequence valve malfunction

X

X

2

X

P0819

Manual switch/up switch/down switch circuit malfunction (open circuit/short 
circuit)

–

X

1

X

P0826

Steering shift switch circuit malfunction (open circuit/short to ground)

X

X

1

X

P0882

TCM B+ low (less than 9 V)

–

X

1

X

P0883

TCM B+ low (less than 11 V)

–

X

1

X

P0961

Line pressure control solenoid range/performance (stuck)

X

X

1

X

P0962

Line pressure control solenoid circuit malfunction (short to ground/open circuit)

X

X

1

X

P0963

Line pressure control solenoid circuit malfunction (short to power)

X

X

1

X

P0969

Shift solenoid F range/performance (stuck)

X

X

1

X

P0970

Shift solenoid F circuit malfunction (short to ground/open circuit)

X

X

1

X

P0971

Shift solenoid F circuit malfunction (short to power)

X

X

1

X

P0973

Shift solenoid A circuit malfunction (short to ground)

X

X

1

X

P0974

Shift solenoid A circuit malfunction (short to power/open circuit)

X

X

1

X

P0976

Shift solenoid B circuit malfunction (short to ground)

X

X

1

X

P0977

Shift solenoid B circuit malfunction (short to power/open circuit)

X

X

1

X

P0979

Shift solenoid C circuit malfunction (short to ground)

X

X

1

X

P0980

Shift solenoid C circuit malfunction (short to power/open circuit)

X

X

1

X

P0982

Shift solenoid D circuit malfunction (short to ground)

X

X

1

X

P0983

Shift solenoid D circuit malfunction (short to power/open circuit)

X

X

1

X

P0985

Shift solenoid E circuit malfunction (short to ground)

X

X

1

X

P0986

Shift solenoid E circuit malfunction (short to power/open circuit)

X

X

1

X