Mazda RX-8. Manual - part 22

ON-BOARD DIAGNOSTIC 

08–02–5

08–02

*1

: Used during seat weight sensor calibration setting. Not necessary for diagnostic.

*2

: When the calibration error is displayed, the error can be cleared by turning the ignition switch to the LOCK 

position.

End Of Sie

PS_AB_ST
(Passenger-side side air bag 
sensor circuit status)

SHRT_B+/

SHRT_GND/

OPEN/

SQ_LOWRES/

Normal

•

Related wiring harness short to power supply: SHRT_B+

•

Related wiring harness short to ground: SHRT_GND

•

Related wiring harness circuit open: OPEN

•

Air bag module circuit resistance low: SQ_LOWRES

•

Related wiring harness normal: Normal

2I, 2L

PS_BUKL
(Passenger-side buckle switch 
status)

Buckled/

Unbuckled

•

Passenger-side buckle switch on: Buckled

•

Passenger-side buckle switch off: Unbuckled

2H

PS_CURTN
(Passenger-side curtain air 
bag module resistance)

Ohm

Under any condition: 1.4—3.2 ohms

2A, 2D

PS_CURT_ST
(Passenger-side curtain air 
bag module circuit status)

SHRT_B+/

SHRT_GND/

OPEN/

SQ_LOWRES/

Normal

•

Related wiring harness short to power supply: SHRT_B+

•

Related wiring harness short to ground: SHRT_GND

•

Related wiring harness circuit open: OPEN

•

Air bag module circuit resistance low: SQ_LOWRES

•

Related wiring harness normal: Normal

2A, 2D

PS_PTENS
(Passenger-side pre-tensioner 
seat belt resistance)

Ohm

Under any condition: 1.5—3.1 ohms

2G, 2J

PS_WEIGHT
(Seat weight sensor measured 
weight of passenger)

kg

Display of load (body weight) on passenger-side seat

1I

PS1_STAT
(Passenger-side air bag 
module (inflator No.1) circuit 
status)

SHRT_B+/

SHRT_GND/

OPEN/

SQ_LOWRES/

Normal

•

Related wiring harness short to power supply: SHRT_B+

•

Related wiring harness short to ground: SHRT_GND

•

Related wiring harness circuit open: OPEN

•

Air bag module circuit resistance low: SQ_LOWRES

•

Related wiring harness normal: Normal

1M, 1P

PS2_STAT
(Passenger-side air bag 
module (inflator No.2) circuit 
status)

SHRT_B+/

SHRT_GND/

OPEN/

SQ_LOWRES/

Normal

•

Related wiring harness short to power supply: SHRT_B+

•

Related wiring harness short to ground: SHRT_GND

•

Related wiring harness circuit open: OPEN

•

Air bag module circuit resistance low: SQ_LOWRES

•

Related wiring harness normal: Normal

1A, 1D

PSAB_DepSt
(Passenger-side air bag 
module deployment status)

Active/

Inactive

•

Passenger-side air bag module operation (deployment) 
enabled status: Active

•

Passenger-side air bag module non-operation (non-
deployment) status: Inactive

1I

PSB_P_ST
(Passenger-side pre-tensioner 
seat belt circuit status)

SHRT_B+/

SHRT_GND/

OPEN/

SQ_LOWRES/

Normal

•

Related wiring harness short to power supply: SHRT_B+

•

Related wiring harness short to ground: SHRT_GND

•

Related wiring harness circuit open: OPEN

•

Pre-tensioner seat belt circuit resistance low: 
SQ_LOWRES

•

Related wiring harness normal: Normal

2G, 2J

TRAK_SW
(Seat track position sensor 
state)

Forward/

Rearward

•

Front seat front position: Forward

•

Front seat rear position: Rearward

2W, 2X

PID name (definition)

Unit/Condition

Operation Condition (Reference)

Terminal

AIR BAG SYSTEM 

08–10–1

08–10

08–10

AIR BAG SYSTEM

AIR BAG SYSTEM OUTLINE . . . . . . . . .  08–10–1
AIR BAG SYSTEM 

STRUCTURAL VIEW  . . . . . . . . . . . . . .  08–10–1

AIR BAG SYSTEM 

WIRING DIAGRAM . . . . . . . . . . . . . . . .  08–10–2

PASSENGER SENSING SYSTEM 

OUTLINE  . . . . . . . . . . . . . . . . . . . . . . . . 08–10–2

Outline. . . . . . . . . . . . . . . . . . . . . . . . . . 08–10–2

PASSENGER SENSING SYSTEM 

CONSTRUCTION . . . . . . . . . . . . . . . . . . 08–10–3

PASSENGER SENSING SYSTEM 

OPERATION . . . . . . . . . . . . . . . . . . . . . . 08–10–3

End of Toc

AIR BAG SYSTEM OUTLINE

EHU081000000101

•

Passenger sensing system has been added.

•

In accordance with the system addition, the following components have been added.

End Of Sie

AIR BAG SYSTEM STRUCTURAL VIEW

EHU081000000102

End Of Sie

Item

Outline

Seat weight sensor

•

Measures the compression weight of the load applied to the 
passenger-side seat by the distortion amount using two seat 
weight sensor and sends an electrical signal corresponding to 
the distortion amount to the seat weight sensor control 
module.

Seat weight sensor control module

•

Based on the electrical signal sent from the seat weight 
sensor corresponding to the distortion amount, calculates the 
total seated weight to determine the passenger, and sends 
the determination result to the SAS control module.

PAD indicator

•

PAD indicator has been adopted to inform driver and front 
passenger of the deployment standby status of the 
passenger-side air bag module, passenger-side side air bag 
module and passenger-side pre-tensioner seat belt.

PAD 
INDICATOR

DRIVER SEAT

FRONT 
PASSENGER 
SEAT

SEAT WEIGHT SENSOR 
CONTROL MODULE

SEAT WEIGHT 
SENSOR (RH)

SEAT WEIGHT 
SENSOR (LH)

SAS CONTROL 
MODULE

EHU810ZS8001

AIR BAG SYSTEM 

08–10–2

AIR BAG SYSTEM WIRING DIAGRAM

EHU081000000103

End Of Sie

PASSENGER SENSING SYSTEM OUTLINE

EHU081057031101

Outline

•

 Measures the total seated weight on the passenger-side seat, determines whether there is an adult or child 
(including a child-restraint seat), or that it is empty, and then controls operation (deployment) or non-operation 
(non-deployment) of the passenger-side air bag module and pre-tensioner seat belt.

End Of Sie

B

A

IG1

IG1

1C

1D

1A

1B

1A

3A

3B

4A

4B

1A

1B

2A

2B

1B

2A

2B

A

B

A

B

A

B

A

B

A

B

A

B

1

1

1B

1C

1R

1W

1T

1X

1E

2Z

2AA

2B

2C

2

2

1V

1S

1J

1G

SAS 
CONTROL
MODULE

POOR CONNECTION
DETECTOR BAR

KLN

CLOCK SPRING

INFLATOR 
NO.1

INFLATOR 
NO.1

DRIVER-SIDE
AIR BAG
MODULE

DRIVER-SIDE
PRE-TENSIONER 
SEAT BELT

DRIVER-SIDE
CURTAIN AIR BAG
MODULE

DRIVER-SIDE SIDE
AIR BAG MODULE

PASSENGER-SIDE
AIR BAG MODULE

PASSENGER-SIDE
PRE-TENSIONER
SEAT BELT

PASSENGER-SIDE
CURTAIN AIR BAG
MODULE

PASSENGER-SIDE
SIDE AIR BAG
MODULE

INFLATOR 
NO.2

INFLATOR 
NO.2

CRASH ZONE
SENSOR

AIR BAG
SYSTEM
WARNING
LIGHT

SEAT BELT
WARNING
LIGHT

DRIVER-SIDE
SIDE AIR BAG
SENSOR

TWISTED PAIR

POOR CONNECTION
DETECTOR BAR

TWISTED PAIR

TWISTED PAIR

PASSENGER-SIDE
SIDE AIR BAG
SENSOR

DLC-2

INSTRUMENT CLUSTER

1P

1M

1D

1A

2S

2P

2Y

2V

2M

2O

2J

2G

2D

2A

2L

2I

A

A

A

B

2T

DRIVER-SIDE 
BUCKLE SWITCH

PASSENGER-SIDE
BUCKLE SWITCH

A

B

2H

A

B

B

B

2W

2X

TWISTED PAIR

SEAT TRACK 
POSITION
SENSOR

A

B

IG1

3D

1I

3A

3B

1A

1B

2A

2B

S

EAT 

WEIGHT 
SENSOR 
(LH)

S

EAT 

WEIGHT 
SENSOR 
(RH)

S

EAT 

WEIGHT 
SENSOR  

CONTROL 
MODULE

TWISTED 
PAIR

1U

IG1

PAD INDICATOR

EHU810ZS8004