Specifications

ON-BOARD DIAGNOSTIC [AIR BAG SYSTEM]
T221
T
End Of Sie
2 INSPECT WIRING HARNESS BETWEEN
DRIVER-SIDE SIDE AIR BAG 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 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. (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.
• 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 driver-side side air bag sensor
connector.
• Connect negative battery cable.
• Inspect following wiring harnesses between
SAS unit and driver-side side air bag sensor
terminals for short to ground, short to power
supply, and open circuit:
2ZA
 2AAB
• Is wiring harness okay?
Yes Replace driver-side side air bag sensor, then go to next
step.
(See T123 SIDE AIR BAG SENSOR REMOVAL/
INSTALLATION)
No Replace wiring harnesses.
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 driver-side side air bag sensor
connector.
• Are DTCs B2444 and/or U2017 indicated?
Yes
Present malfunction diagnosis:
• Replace SAS unit.
(See T124 SAS UNIT REMOVAL/INSTALLATION)
Past malfunction diagnosis:
• Troubleshooting completed.
No Troubleshooting completed.
STEP INSPECTION ACTION