Mazda RX-8. Manual - part 23

 

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Mazda RX-8. Manual - part 23

 

 

AIR BAG SYSTEM 

08–10–3

08–10

PASSENGER SENSING SYSTEM CONSTRUCTION

EHU081057031102

Consists of the seat weight sensors installed on the underside of the front passenger slide adjuster, the seat 
weight sensor control module installed to the underside of the seat weight sensor on the right, the PAD 
indicator, and the SAS control module installed on the console.

End Of Sie

PASSENGER SENSING SYSTEM OPERATION

EHU081057031103

1. The load on the passenger-side seat is converted into an electric signal by the strain gauge built into the seat 

weight sensor, and this signal is sent to the seat weight sensor control module.

2. The electronic signals from the two seat weight sensor are used for calculation by the seat weight sensor 

control module, which divides the result and then determines whether there is an adult or child (including a 
child-restraint seat) in the passenger-side seat, or that it is empty. The determined result is sent to the SAS 
control module.

3. The SAS control module performs control based on this determined result as shown in the following table when 

the module detects a level of impact requiring operation (deployment).

×

: Possible

-: Not possible

Note

The passenger-side air bag module, the passenger-side side air bag module and the passenger-side pre-
tensioner seat belt system will be turned off as the total seated weight drops toward 30kg {66 lb} and they 
will be turned on again before the weight exceeds 42kg {93 lb}.

PAD 
INDICATOR

SEAT WEIGHT SENSOR 
CONTROL MODULE

SEAT WEIGHT 
SENSOR (RH)

SEAT WEIGHT 
SENSOR (LH)

SAS CONTROL 
MODULE

EHU810ZS8002

Determined result

Determined weight

Passenger-side 

air bag module 

operation 

(deployment)

Passenger-side 

side air bag 

module operation 

(deployment)

Passenger-side 

pre-tensioner seat 

belt operation 

(deployment)

PAD 

indicator

Adult

Approx. 42 kg {93 lb} or 
more

×

×

×

Not 

illuminated

Child (including 
child-restraint seat)

Approx. 30 kg {66 lb} or 
less

-

-

-

Illuminated

Empty

Approx. 0 kg {0 lb}

-

-

-

Not 

illuminated

AIR BAG SYSTEM 

08–10–4

Caution

If any of the following work is performed, perform the seat weight sensor calibration using the 
WDS or equivalent.

Replacement with a new seat weight sensor

Replacement with a new seat weight sensor control module

Replacement with new passenger-side seat parts

Disassembly of the passenger-side seat

If any of the following work is performed, perform the seat weight sensor inspection using the 
WDS or equivalent.

Removal of the passenger-side seat

Loosening and retightening of passenger’s seat fixing bolts

Or, the vehicle is involved in a collision

End Of Sie

IG1

IG1

IG1

IG1

PAD 
INDICATOR

PAD 
INDICATOR

PAD 
INDICATOR

SAS 
CONTROL 
MODULE

SAS 
CONTROL 
MODULE

SAS 
CONTROL 
MODULE

SEAT 
WEIGHT 
SENSOR 
(RH)

SEAT 
WEIGHT 
SENSOR 
CONTROL 
MODULE

ADULT 
DETERMINED

EMPTY SEAT 
DETERMINED

SEAT 
WEIGHT 
SENSOR 
CONTROL 
MODULE

SEAT 
WEIGHT 
SENSOR 
(LH)

SEAT 
WEIGHT 
SENSOR 
CONTROL 
MODULE

SEAT 
WEIGHT 
SENSOR 
(RH)

SEAT 
WEIGHT 
SENSOR 
(RH)

SEAT 
WEIGHT 
SENSOR 
(LH)

SEAT 
WEIGHT 
SENSOR 
(LH)

TWISTED 
PAIR

TWISTED 
PAIR

TWISTED 
PAIR

ELECTRIC SIGNAL

ELECTRIC SIGNAL

ELECTRIC SIGNAL

CHILD (INCLUDING A 
CHILD-RESTRAINT SEAT) 
DETERMINED

PASSENGER-SIDE 
AIR BAG MODULE

PASSENGER-SIDE 
AIR BAG MODULE

PASSENGER-SIDE SIDE 
AIR BAG MODULE

PASSENGER-SIDE SIDE 
AIR BAG MODULE

PASSENGER-SIDE 
AIR BAG MODULE

PASSENGER-SIDE SIDE 
AIR BAG MODULE

IG1

IG1

PASSENGER-SIDE 
PRE-TENSIONER 
SEAT BELT

PASSENGER-SIDE 
PRE-TENSIONER 
SEAT BELT

PASSENGER-SIDE 
PRE-TENSIONER 
SEAT BELT

EHU810ZS8003

09–00–1

09

BODY & ACCESSORIES

SECTION

09–00

Toc of SCT

OUTLINE . . . . . . . . . . . . . . . . . . 09-00
SECURITY AND LOCKS

[ADVANCED 
KEYLESS SYSTEM]. . . . . . . . 09-14A

SECURITY AND LOCKS

[KEYLESS ENTRY 
SYSTEM] . . . . . . . . . . . . . . . .  09-14B

ENTERTAINMENT . . . . . . . . . .  09-20
INSTRUMENTATION/DRIVER

INFO.  . . . . . . . . . . . . . . . . . . .  09-22

Toc of SCT

09–00

OUTLINE

BODY AND ACCESSORIES

ABBREVIATIONS. . . . . . . . . . . . . . . . . . 09–00–1

BODY AND ACCESSORIES NEW 

FEATURES  . . . . . . . . . . . . . . . . . . . . . .  09–00–1

End of Toc

BODY AND ACCESSORIES ABBREVIATIONS

EHU090000000101

End Of Sie

BODY AND ACCESSORIES NEW FEATURES

EHU090000000102

End Of Sie

A/C

Air Conditioner

ACC

Accessories

AT

Automatic Transmission

CAN

Controller Area Network

CM

Control Module

CPU

Central Processing Unit

CTR

Center

DLC

Data Link Connector

DTC

Diagnostic Trouble Code

GND

Ground

HI

High

IG

Ignition

LCD

Liquid Crystal Display

LED

Light Emitting Diode

LH

Left Hand

LO

Low

M

Motor

MT

Manual Transmission

OFF

Switch Off

ON

Switch On

PCM

Powertrain Control Module

PID

Parameter Identification

P/W CM

Power Window Control Module

RH

Right Hand

SW

Switch

TNS

Tail Number Side Lights

WDS

Worldwide Diagnostic System

Improved marketability

Advanced keyless entry and start system adopted

Car-navigation unit modified

 

 

 

 

 

 

 

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