Mazda 6. Manual — part 45

ON-BOARD DIAGNOSTIC

P–23

P

Active Command Modes Function

•

This function allows control of devices through the WDS or equivalent.

Active Command Modes Table

Note

•

When operating the ABS motor and each valve forcibly, turn VPWR RLY on, and then each command on.
VPWR RLY regulates the power supply for the ABS motor and eight valves.

External Tester Communication Function

•

The external tester communication function communicates diagnostic information (reading DTCs, reading
input/output signal, driving output parts) by sending and receiving signal between the DSC unit and external
tester.

Connection and communication information

Serial Communication

•

Serial communication (synchronous communication) is a method of communication in which many pieces of
information are sent and received instantaneously through a single wire.

•

By connecting the WDS or equivalent to data link connector, diagnostic information can be sent and received
between the WDS or equivalent and the ABS (ABS/TCS) or DSC HU/CM via the KLN terminal.

•

The DSC HU/CM receives signals for the malfunction detection function, data monitor function, and active
command modes function from the WDS or equivalent, and sends information about DTCs and input/output
part operating conditions to the WDS or equivalent.

End Of Sie

Command Name

Definition

Operation

Note

RF_DSC_V

Stability control solenoid valve (RF-LR)

ON/OFF

Ignition key at ON
(Engine OFF), and
driving

LF_DSC_V

Stability control solenoid valve (LF-RR)

ON/OFF

ABS_POWER

Fail-safe relay

ON/OFF

LR_OUTLET

Left rear ABS pressure reduction solenoid valve

ON/OFF

LR_INLET

Left rear ABS pressure retention solenoid valve

ON/OFF

RR_INLET

Right rear ABS pressure retention solenoid valve

ON/OFF

RR_OUTLET

Right rear ABS pressure reduction solenoid valve

ON/OFF

LF_INLET

Left front ABS pressure retention solenoid valve

ON/OFF

LF_OUTLET

Left front ABS pressure reduction solenoid valve

ON/OFF

RF_INLET

Right front ABS pressure retention solenoid valve

ON/OFF

RF_OUTLET

Right front ABS pressure reduction solenoid valve

ON/OFF

PMP_MOTOR

ABS motor

ON/OFF

RF_TC_VLV

Traction switch solenoid valve (RF-LR)

ON/OFF

LF_TC_VLV

Traction switch solenoid valve (LF-RR)

ON/OFF

TRAC OFF

Traction control off indicator

ON/OFF

STAB_IND

DSC indicator light

ON/OFF

YAWRATE

Yaw rate sensor initialization start

ON/OFF

LATACCEL

Lateral accel sensor initialization start

TRUE/FALSE

External tester

WDS or equivalent

Connection

Communication method

On-board diagnostic (malfunction
detection) function

Input/output: KLN signal

Serial communication

Data monitor function

Input/output: KLN signal

Serial communication

Active command modes function

Input/output: KLN signal

Serial communication

Diagnostic function

Signal received

Signal sent

Malfunction detection function

DTC verification signal

DTC

Data monitor function

Request signal to read selected monitor
item

Monitor information for requested
monitor item

Active command modes function

Request signal to read selected active
command modes item

Output part drive signal

R–1

R

R

SUSPENSION

ABBREVIATIONS . . . . . . . . . . . . ..R-2

ABBREVIATIONS . . . . . . . . . . . . R-2

OUTLINE . . . . . . . . . . . . . . . . R-2

OUTLINE OF CONSTRUCTION. . . . . . ..R-2
FEATURES . . . . . . . . . . . . . . ..R-2
SPECIFICATIONS . . . . . . . . . . . ...R-3
SUSPENSION DESCRIPTION . . . . . . . R-4

FRONT SUSPENSION . . . . . . . . . . ...R-5

OUTLINE. . . . . . . . . . . . . . . ..R-5
STRUCTURAL VIEW. . . . . . . . . . ...R-5
FRONT SUSPENSION DESCRIPTION. . . ...R-6
FRONT SHOCK ABSORBER AND

COIL SPRING . . . . . . . . . . . . ...R-9

FRONT CROSSMEMBER . . . . . . . . .R-10

REAR SUSPENSION . . . . . . . . . . ...R-11

OUTLINE. . . . . . . . . . . . . . . R-11
STRUCTURAL VIEW. . . . . . . . . . .R-11
REAR SUSPENSION DESCRIPTION . . . ...R-12
REAR CROSSMEMBER. . . . . . . . . R-13

WHEEL AND TIRE . . . . . . . . . . . ...R-14

OUTLINE. . . . . . . . . . . . . . . R-14
STRUCTURAL VIEW. . . . . . . . . . .R-14

R–2

ABBREVIATIONS , OUTLINE

ABBREVIATIONS

A6E740101013T01

End Of Sie

OUTLINE OF CONSTRUCTION

A6E740201013T01

•

Both front and rear suspension systems, unique to the Mazda6 (GG) model, have been adopted as follows.
— High-mount double wishbone (with double-pivoted lower arm(s)) front suspension
— E-type multi-link rear suspension

•

Both the front and rear suspension, employ newly developed systems, to improve the following features.

End Of Sie

FEATURES

A6E740201013T02

Improved Handling And Straight Driving Stability

•

The king-pin to wheel-center offset of the front suspension has been minimized.

•

A low-friction ball joint has been adopted for the front lower arms and front upper arm.

•

The tread has been widened 50 mm {1.97 in} (compared to 626 (GF) model).

•

The rolling axis is set slightly aslant.

•

A front shock absorber with rebound spring has been adopted.

Improved Riding Comfort

•

A separate input type shock absorber mount has been adopted.

•

Front and rear crossmembers with rubber mounts have been adopted.

Improved Rigidity

•

A perimeter frame structure front crossmember has been adopted.

•

A stiffener has been adopted for the front suspension.

Improved Serviceability

•

An adjusting cam to adjust the rear camber has been adopted on the rear lower arm (rear suspension).

•

A turnbuckle mechanism to adjust rear toe has been adopted on the rear lateral link (rear suspension).

Improved Marketability

•

An adhesive-type balance weight has been adopted (16-inch and 17-inch aluminium alloy wheel).

Environmental Consideration

•

A balance weight made of steel has been adopted (adhesive-type balance weight).

End Of Sie

ABBREVIATIONS

LF

Left front

LR

Left rear

RF

Right front

RH

Right hand

RR

Right rear

4SD

4 door sedan

5HB

5 door hatchback

OUTLINE

OUTLINE

R–3

R

SPECIFICATIONS

A6E740201013T03

*

1

: Engine coolant and engine oil are at specified level. Fuel is full. Spare tire, jack and tools are in designated

position.

*

2

: Difference between left and right must not exceed 1

°

30'.

*3

: Distance between wheel center and fender brim is following. Front: 402 mm {15.8 in} (reference value) Rear:

392 mm {15.4 in} (reference value)

End Of Sie

Item

Specification

Mazda6 (GG) (4SD, 5HB)

626 (GF) (4SD, 5HB)

Front
suspension

Type

High-mount double wishbone

(with double-pivoted lower

arm(s))

Strut

Spring type

Coil spring

Shock absorber type

Cylindrical, double-acting (Low-

pressure gas charged with

rebound spring)

Cylindrical, double-acting

(Low-pressure gas charged)

Stabilizer

Type

Torsion bar

Diameter

(mm {in})

23 {0.91}

27 {1.06}

Wheel
alignment
(Unloaded)*

1

Total toe-in

(mm {in})

Tire: 2

±

4 {0.08

±

0.16},

Rim inner: 1.4

±

2.8 {0.06

±

0.12}

Tire: 3

±

4 {0.12

±

0.16},

Rim inner: 2

±

3 {0.08

±

0.12}

(degree)

0

°

11

′±

0

°

22

′

0

°

17

′±

0

°

23

′

Maximum
steering angle

inner

39

°±

3

°

38

°±

3

°

outer

31

°±

3

°

32

°

30

′±

3

°

Caster angle*

2

normal

3

°

47

′±

1

°

(reference value)

1

°

52

′±

1

°

elevated

*3

3

°

42'

±

1

°

(reference value)

—

Camber angle*

2

normal

–0

°

17

′±

1

°

(reference value)

–0

°

20

′±

1

°

elevated

*3

–0

°

10'

±

1

°

(reference value)

—

Steering axis
inclination

normal

5

°

28

′

(reference value)

12

°

43

′

(reference value)

elevated

*3

5

°

18' (reference value)

—

Rear
suspension

Type

E-type multi-link

Strut

Spring type

Coil spring

Stabilizer

Type

Torsion bar

Diameter

(mm {in})

4SD: 19 {0.75}
5HB: 18 {0.71}

17 {0.67}

Shock absorber type

Cylindrical, double-acting

(Low-pressure gas charged)

Wheel
alignment
(Unloaded)*

1

Total toe-in

(mm {in})

Tire: 2

±

4 {0.08

±

0.16}

Rim inner: 1.4

±

2.8 {0.06

±

0.12}

(degree)

0

°

11

′±

0

°

22

′

0

°

12

′±

0

°

23

′

Camber angle*

2

normal

–1

°

13

′±

1

°

–0

°

47

′±

1

°

elevated

*3

–1

°

05

′±

1

°

—

Thrust angle

(degree)

0

°±

0

°

48

′