Mazda Protege 5. Manual - part 287

ON-BOARD DIAGNOSTIC 

08–02–16

End Of Sie

3

INSPECT WIRING HARNESS BETWEEN 
PASSENEGER-SIDE PRE-TENSIONER SEAT 
BELT 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- and passenger-side side 
air bag module connectors. (Vehicles with 
side air bag)

•

Remove driver-side B-pillar lower trim.

•

Disconnect driver-side pre-tensioner seat 
belt connector.

•

Remove left side side wall.

•

Disconnect all SAS control module 
connectors.

•

Inspect wiring harness between SAS control 
module connector terminal 3I and 
passenger-side pre-tensioner seat belt 
connector terminal A, and between SAS 
control module connector terminal 3K and 
passenger-side pre-tensioner seat belt 
connector terminal B for following.
— Short to ground
— Short to power supply
— Open circuit

•

Are wiring harnesses okay?

Yes

Present malfunction diagnosis:

•

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

Past malfunction diagnosis:

•

Replace passenger-side pre-tensioner seat belt.

No

Replace wiring harness.

STEP

INSPECTION

ACTION

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ON-BOARD DIAGNOSTIC 

08–02–17

08–02

DTC 22

A3U080201046W11

Diagnostic procedure

DTC 22

Driver-side side air bag sensor system (Internal circuit abnormal)

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.

Note

•

For vehicles without side air bag, DTC 22, 25, 26, 32, 35, or 37 may be indicated concurrently. In 
such a case, perform only the smallest DTC troubleshooting among them.

Vehicles with side air bag

•

Malfunction in wiring harness between driver-side side air bag sensor and SAS control module.

•

Malfunction in driver-side side air bag sensor circuit.

Vehicles without side air bag

•

Terminal 2AA of SAS control module connector is open.

POSSIBLE 

CAUSE

Vehicles with side air bag

•

Driver-side side air bag sensor malfunction.

•

Open or short circuit in wiring harness between driver-side side air bag sensor and SAS control 
module.

•

SAS control module malfunction.

Vehicles without side air bag

•

Malfunction of connector between SAS control module and ground.

•

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

•

SAS control module malfunction.

STEP

INSPECTION

ACTION

1

•

Is vehicle equipped with side air bag?

Yes

Go to next step.

No

Go to Step 6.

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ON-BOARD DIAGNOSTIC 

08–02–18

2

INSPECT WIRING HARNESS BETWEEN 
DRIVER-SIDE SIDE AIR BAG SENSOR 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.

•

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 1B 
of SAS control module connector and 
terminal A of driver-side side air bag sensor 
connector, between terminal 1D of SAS 
control module connector and terminal B of 
driver-side side air bag sensor connector, 
between terminal 1F of SAS control module 
connector and terminal C of driver-side side 
air bag sensor connector, and between 
terminal 1E of SAS control module connector 
and terminal D of driver-side side air bag 
sensor connector for following.
— Short to ground
— Short to power supply
— Open circuit

•

Are wiring harnesses okay?

Yes

Present malfunction diagnosis:

•

Go to next step.

Past malfunction diagnosis:

•

Replace driver-side side air bag sensor.
(See 08–10–10 SIDE AIR BAG SENSOR REMOVAL/
INSTALLATION)

No

Replace wiring harness.

3

INSPECT GROUND CIRCUIT IN SAS 
CONTROL MODULE

•

Is there continuity between terminal 1F and 
2Q of SAS control module?

Yes

Go to next step.

No

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

4

INSPECT POWER SUPPLY CIRCUIT OF 
DRIVER-SIDE SIDE AIR BAG SENSOR

•

Connect all SAS control module connectors.

•

Connect clock spring connector.

•

Connect passenger-side air bag module 
connector.

•

Connect driver- and passenger-side side air 
bag module connectors.

•

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

•

Connect negative battery cable.

•

Turn ignition switch to ON position.

•

Measure voltage at terminal A of driver-side 
side air bag sensor connector.

•

Is voltage approximately 5 V?

Yes

Replace driver-side side air bag sensor, then go to next 
step.
(See 08–10–10 SIDE AIR BAG SENSOR REMOVAL/
INSTALLATION)

No

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

STEP

INSPECTION

ACTION

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ON-BOARD DIAGNOSTIC 

08–02–19

08–02

End Of Sie

5

VERIFY WHETHER SAS CONTROL MODULE 
IS MALFUNCTIONING OR NOT

•

Connect driver-side side air bag sensor 
connector.

•

Connect negative battery cable.

•

Turn ignition switch to ON position.

•

Is DTC 22 indicated?

Yes

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

No

Complete inspection by DTC.

6

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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