Mazda Protege 5. Manual - part 291

ON-BOARD DIAGNOSTIC 

08–02–32

*

: Consists of the 2 parts of the female connector that separate the short bar from the terminal when connected 

to the male connector.

4

INSPECT WIRING HARNESS BETWEEN 
PASSENGER-SIDE SIDE AIR BAG MODULE 
AND SAS CONTROL MODULE

•

Turn ignition switch to LOCK position.

•

Disconnect negative battery cable and wait 
for more than 1 minute.

•

Remove column cover.

•

Disconnect clock spring connector.

•

Remove glove compartment.

•

Disconnect passenger-side air bag module 
connector.

•

Disconnect driver-side side air bag module 
connector.

•

Remove B-pillar lower trims.

•

Disconnect driver-and passenger-side pre-
tensioner seat belt connectors.

•

Remove left side side wall.

•

Disconnect all SAS control module 
connectors.

•

Inspect following wiring harness between 
SAS control module connector and 
passenger-side side air bag module 
connector terminals (harness side) for short 
to ground, short to power suppiy, and open 
circuit:
— 1I and A
— 1K and B

•

Are wiring harnesses okay?

Yes

Present malfunction diagnosis:

•

Remove SAS control module.
(See 08–10–12 SAS CONTROL MODULE REMOVAL/
INSTALLATION)

Past malfunction diagnosis:

•

Replace passenger-side side air bag module.
(See 08–10–7 SIDE AIR BAG MODULE REMOVAL/
INSTALLATION)

No

Replace wiring harness.

5

VERIFY THAT SAS CONTROL MODULE 
CONNECTOR TERMINAL 2AA IS GROUNDED

Warning

••••

Handling air bag system components 
improperly can accidentally deploy air 
bag modules and pre-tensioner seat 
belts, which may seriously injure you. 
Read AIR BAG SYSTEM SERVICE 
WARNINGS before handling air bag 
system components.
(See 08–10–3 AIR BAG SYSTEM 
SERVICE WARNINGS)

•

Turn ignition switch to LOCK position.

•

Disconnect negative battery cable and wait 
for more than 1 minute.

•

Remove column cover.

•

Disconnect clock spring connector.

•

Remove glove compartment.

•

Disconnect passenger-side air bag module 
connector.

•

Remove B-pillar lower trims.

•

Disconnect driver-and passenger-side pre-
tensioner seat belt connectors.

•

Remove left side side wall.

•

Disconnect all SAS control module 
connectors.

•

Disconnect driver-side side air bag sensor 
connector.

•

Inspect wiring harness between terminal 
2AA of SAS control module connector and 
ground for following.
— Short to power supply
— Open circuit

•

Is wiring harnesses okay?

Yes

Present malfunction diagnosis:

•

Replace SAS control module.
(See 08–10–12 SAS CONTROL MODULE REMOVAL/
INSTALLATION)

Past malfunction diagnosis:

•

Complete inspection by DTC.

No

Replace wiring harness.

STEP

INSPECTION

ACTION

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ON-BOARD DIAGNOSTIC 

08–02–33

08–02

End Of Sie

DTC 91

A3U080201046W17

Diagnostic procedure

DTC 91

Air bag system warning light system

DETECTION 

CONDITION

Warning

••••

Detection conditions are for understanding DTC outline before performing inspection. 
Performing inspection with only detection conditions may cause injury due to operating error 
or damage the system. When performing inspection, always follow diagnostic procedure.

•

Malfunction in air bag system warning light circuit.

POSSIBLE 

CAUSE

•

Air bag system warning light bulb malfunction.

•

METER 10 A fuse malfunction.

•

Instrument cluster malfunction.

•

Malfunction of connectors between instrument cluster and SAS control module.

•

Open or short circuit in wiring harness between METER 10 A fuse and instrument cluster.

•

Open or short circuit in wiring harness between instrument cluster and SAS control module.

•

SAS control module malfunction.

STEP

INSPECTION

ACTION

1

•

Is this present malfunction diagnosis?

Yes

Replace SAS control module.
(See 08–10–12 SAS CONTROL MODULE REMOVAL/
INSTALLATION)

No

Go to next step.

2

INSPECT METER 10 A FUSE

•

Turn ignition switch to LOCK position.

•

Disconnect negative battery cable.

•

Remove METER 10 A fuse.

•

Is fuse okay?

Yes

Reinstall METER 10 A fuse, then go to next step.

No

Replace METER 10 A fuse.

3

INSPECT AIR BAG SYSTEM WARNING 
LIGHT BULB

•

Remove instrument cluster.
(See 09–22–3 INSTRUMENT CLUSTER 
REMOVAL/INSTALLATION)

•

Remove air bag system warning light bulb.

•

Is bulb okay?

Yes

Reinstall air bag system warning light bulb, then go to next 
step.

No

Replace air bag system warning light bulb.

4

INSPECT INSTRUMENT CLUSTER

•

Is there continuity between instrument 
cluster terminals 1J and 1R?

Yes

Go to next step.

No

With tachometer

•

Replace speedometer and tachometer.

Without tachometer

•

Replace speedometer.
(See 09–22–3 INSTRUMENT CLUSTER 
DISASSEMBLY/ASSEMBLY)

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ON-BOARD DIAGNOSTIC 

08–02–34

End Of Sie

5

INSPECT FOR CONTINUITY BETWEEN 
METER 10 A FUSE AND INSTRUMENT 
CLUSTER

•

Connect negative battery cable.

•

Turn ignition switch to ON position.

•

Measure voltage at instrument cluster 
connector terminal 1J.

•

Is voltage more than 9 V?

Yes

Go to next step.

No

Replace wiring harness.

6

INSPECT WIRING HARNESS BETWEEN 
INSTRUMENT CLUSTER AND SAS 
CONTROL MODULE

Warning

••••

Handling air bag system components 
improperly can accidentally deploy air 
bag modules and pre-tensioner seat 
belts, which may seriously injure you. 
Read AIR BAG SYSTEM SERVICE 
WARNINGS before handling air bag 
system components.
(See 08–10–3 AIR BAG SYSTEM 
SERVICE WARNINGS)

•

Turn ignition switch to LOCK position.

•

Disconnect negative battery cable and wait 
for more than 1 minute.

•

Remove column cover.

•

Disconnect clock spring connector.

•

Remove glove compartment.

•

Disconnect passenger-side air bag module 
connector.

•

Disconnect driver- and passenger-side side 
air bag module connectors. (Vehicles with 
side air bag)

•

Remove B-pillar trims.

•

Disconnect driver- and passenger-side pre-
tensioner seat belt connectors.

•

Remove left side side wall.

•

Disconnect all SAS control module 
connectors.

•

Inspect wiring harness between instrument 
cluster connector terminal 1R and SAS 
control module connector terminal 2W for 
following.
— Short to ground
— Short to power supply
— Open circuit

•

Is wiring harness okay?

Yes

Go to next step.

No

Replace wiring harness.

7

INSPECT WIRING HARNESS BETWEEN DLC 
AND SAS CONTROL MODULE

•

Inspect wiring harness between FAB 
terminal of DLC and terminal 2W of SAS 
control module connector for following.
— Short to ground
— Short to power supply

•

Is wiring harness okay?

Yes

Complete inspection by DTC.

No

Replace wiring harness.

STEP

INSPECTION

ACTION

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SYMPTOM TROUBLESHOOTING 

08–03–1

08–03

08–03

SYMPTOM TROUBLESHOOTING

AIR BAG SYSTEM WIRING DIAGRAM .  08–03–1
FOREWORD . . . . . . . . . . . . . . . . . . . . . .  08–03–2

Flowchart . . . . . . . . . . . . . . . . . . . . . . .  08–03–2

TROUBLESHOOTING INDEX. . . . . . . . .  08–03–4
NO.1 AIR BAG SYSTEM WARNING 

LIGHT DOES NOT ILLUMINATE 
WHEN IGNITION SWITCH IS 
TURNED TO ON POSITION . . . . . . . . .  08–03–4

NO.2 AIR BAG SYSTEM WARNING LIGHT 

ILLUMINATES IMMEDIATELY AFTER IGNITION 
SWITCH IS TURNED TO ON POSITION AND 
REMAINS ILLUMINATED  . . . . . . . . . . . 08–03–6

End of Toc

AIR BAG SYSTEM WIRING DIAGRAM

A3U080301046W01

End Of Sie

Z3U0802W001

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