Mazda Protege 5. Manual - part 292

SYMPTOM TROUBLESHOOTING

08–03–2

FOREWORD

A3U080301046W02

•

Thoroughly read and understand the basic flow of troubleshooting in order to properly perform the procedures.
(See 00–00–5 Troubleshooting Procedure.)

•

Use the following flowchart to verify the cause of the trouble.

Flowchart

Note

•

While performing the inspection of the past malfunction code, the applicable DTCs may be added to
memory by removing or disconnecting the related parts. Inspect only the DTCs that were indicated before
inspecting.

•

When DTCs of present malfunction are no longer output after present and/or past malfunctions have been
repaired, be sure to perform past malfunction display cancellation to prevent repair of malfunctions that
have already been repaired.

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SYMPTOM TROUBLESHOOTING

08–03–3

08–03

End Of Sie

Z3U0802W002

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SYMPTOM TROUBLESHOOTING

08–03–4

TROUBLESHOOTING INDEX

A3U080301046W03

•

Use the chart below to verify the symptoms of the trouble in order to diagnose the appropriate area.

Note

•

The following may be the cause of trouble if the symptom does not go away after the symptom
troubleshooting steps are followed.
— Simultaneous poor contact at short connector terminals B and P between METER 10 A fuse and SAS

control module, and between ENGINE 10 A fuse and SAS control module.

— Simultaneous poor contact at SAS control module connector terminals 2T and 2Q.
— Simultaneous poor contact at SAS control module connector terminals 2E and 2H.
— Poor contacts in wiring harness between SAS control module connector terminal 2T and ground, and

between SAS control module connector terminal 2Q and ground at the same time.

— Poor contacts or short circuits in wiring harness between METER 10 A fuse and SAS control module,

and between ENGINE 10 A fuse and SAS control module at the same time.

End Of Sie

NO.1 AIR BAG SYSTEM WARNING LIGHT DOES NOT ILLUMINATE WHEN IGNITION SWITCH IS TURNED
TO ON POSITION

A3U080301046W04

•

When performing an asterisked(*) troubleshooting inspection, shake the wiring harness and connectors while
doing the inspection to discover the poor contact points which may be the cause of intermittent malfunctions.

•

If there is a problem, check to make sure connectors, terminals and wiring harness are connected correctly and
undamaged.

No.

Malfunction symptom

Description

Page

Air bag system warning light does not
illuminate when ignition switch is
turned to ON position.

Malfunction in air bag system warning circuit
(open circuit or short to power supply).

(See 08–03–4 NO.1 AIR BAG
SYSTEM WARNING LIGHT
DOES NOT ILLUMINATE
WHEN IGNITION SWITCH IS
TURNED TO ON POSITION)

Air bag system warning light
illuminates immediately after ignition
switch is turned to ON position and
remains illuminated.

Malfunction in air bag system warning circuit
(short to ground).

(See 08–03–6 NO.2 AIR BAG
SYSTEM WARNING LIGHT
ILLUMINATES IMMEDIATELY
AFTER IGNITION SWITCH IS
TURNED TO ON POSITION
AND REMAINS
ILLUMINATED)

Air bag system warning light does not illuminate when ignition switch is turned to ON position.

TROUBLESHOOTING HINTS

•

Malfunction in air bag system warning light circuit
— Instrument cluster (print plate) malfunction
— Air bag system warning light bulb malfunction
— Poor contact in instrument cluster connector
— Open or short circuit in wiring harness between instrument cluster and SAS control module
— SAS control module malfunction

Note

•

When inserting insulator between SAS control module connector terminals and short bar, insert it as shown in the figure.

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SYMPTOM TROUBLESHOOTING

08–03–5

08–03

Diagnostic procedure

STEP

INSPECTION

ACTION

INSPECT OTHER WARNING AND
INDICATOR LIGHTS CIRCUIT IN
INSTRUMENT CLUSTER

•

Turn ignition switch to ON position.

•

Do other warning and indicator lights
illuminate?

Yes

Turn ignition switch to LOCK position, then go to next step.

Inspect instrument cluster power supply system and ground
system, then go to Step 6.

INSPECT AIR BAG SYSTEM WARNING
LIGHT BULB

•

Disconnect negative battery cable.

•

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

•

Is air bag system warning light bulb
functional?

Yes

Reinstall it properly, then go to next step.

Replace bulb, then go to Step 6.

* 3

INSPECT WIRING HARNESS BETWEEN SAS
CONTROL MODULE AND INSTRUMENT
CLUSTER FOR CONTINUITY

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)

•

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.

•

Is there continuity between SAS control
module connector terminal 2W and
instrument cluster connector terminal 1R?

Yes

Go to next step.

Replace wiring harness, then go to Step 6.

* 4

INSPECT WIRING HARNESS BETWEEN SAS
CONTROL MODULE AND INSTRUMENT
CLUSTER FOR SHORT TO POWER SUPPLY

•

Connect negative battery cable.

Caution

••••

Be sure not to cause damage to short
bar when inserting insulator. If short
bar is damaged, you may not be able to
properly inspect connection of SAS
control module connector.

•

Insert insulator between SAS control module
connector terminals 2W and 2T so short bar
cannot function.

•

Turn ignition switch to ON position.

•

Measure voltage at instrument cluster
connector terminal 1R.

•

Is voltage more than approximately 9 V?

Yes

Replace wiring harness, then go to Step 6.

Go to next step.

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