Mazda 2002 6 Workshop Manual page 1127

ON-BOARD DIAGNOSTIC [AIR BAG SYSTEM]
Diagnostic procedure
STEP
1 INSPECT CRASH ZONE SENSOR
• Check following PID/DATA monitor, using
SST (WDS or equivalent).
(See T–195 PID/DATA MONITOR
— OD_F_CRSH
• Is crash zone sensor normal?
2 INSPECT WIRING HARNESS BETWEEN
CRASH ZONE SENSOR AND SAS UNIT
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 T–117 SERVICE
• 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. (Vehicle with
side air bag)
• Disconnect driver and passenger-side
curtain air bag module connectors. (Vehicle
with curtain air bag)
• Remove B-pillar lower trim. (Vehicle with pre-
tensioner seat belt)
• Disconnect driver and passenger-side pre-
tensioner seat belt connectors. (Vehicle with
pre-tensioner seat belt)
• Turn up floor covering.
• Disconnect all SAS unit connectors.
• Disconnect crash zone sensor connector.
• Connect negative battery cable.
• Inspect following wiring harnesses between
SAS unit and crash zone sensor terminals
for short to ground, short to power supply,
and open circuit:
— 1B—A
— 1C—B
• Is wiring harness okay?
3 INSPECT SAS UNIT
• Turn ignition switch to LOCK position.
• Disconnect negative battery cable and wait
for more than 1 minute.
• Connect all SAS unit connectors.
• Connect crash zone sensor connector.
• Is DTC B2296 indicated?
End Of Sie
INSPECTION
TABLE)
WARNINGS)
Yes Present malfunction diagnosis:
• Replace SAS unit.
(See T–124 SAS UNIT
Past malfunction diagnosis:
• Troubleshooting completed.
No Go to next step.
Yes Replace crash zone sensor, then go to next step.
(See T–123 CRASH ZONE SENSOR REMOVAL/
INSTALLATION)
No Replace wiring harnesses.
Yes Present malfunction diagnosis:
• Replace SAS unit.
(See T–124 SAS UNIT
Past malfunction diagnosis:
• Troubleshooting completed.
No Troubleshooting completed.
ACTION
REMOVAL/INSTALLATION)
REMOVAL/INSTALLATION)
T–219
T