ON-BOARD DIAGNOSTIC [AIR BAG SYSTEM]
T–201
T
End Of Sie
2 INSPECT WIRING HARNESS BETWEEN
OCCUPANCY 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. (Vehicles with curtain
air bag)
• Remove B-pillar lower trim. (Vehicle with pre-
tensioner seat belt)
• Disconnect drive- and passenger-side pre-
tensioner seat belt connectors. (Vehicle with
pre-tensioner seat belt)
• Turn up floor covering.
• Disconnect all SAS unit connectors.
• Disconnect occupancy sensor connector.
• Connect negative battery cable.
• Inspect following wiring harness between SAS
unit and occupancy sensor terminals for short to
ground, short to power supply, and open circuit:
— 1I—B
• Is wiring harness okay?
Yes Go to next step.
No Replace wiring harness.
3 INSPECT WIRING HARNESS BETWEEN METER
IG 15 A FUSE AND OCCUPANCY SENSOR
• Connect negative battery cable.
• Turn ignition switch to ON position.
• Measure voltage at occupancy connector
terminal A.
• Is voltage more than 9V?
Yes [Present malfunction diagnosis]Go to next step.
[Past malfunction diagnosis]
Troubleshooting completed.
No Replace wiring harness.
4 VERIFY WHETHER MALFUNCTION IS IN
OCCUPANCY SENSOR OR 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 drive- and passenger-side pre-
tensioner seat belt connectors. (Vehicle with
pre-tensioner seat belt)
• Connect driver and passenger-side curtain air
bag module connectors. (Vehicles with curtain
air bag)
• Connect driver and passenger-side side air bag
module connectors. (Vehicle with side air bag)
• Connect passenger-side air bag module
connector.
• Connect clock spring connector.
• Connect occupancy sensor connector.
• Short occupancy sensor connector terminal B to
ground.
• Connect negative battery cable.
• Turn ignition switch to ON position.
• Is DTC B1871 indicated?
Yes Replace SAS unit.
(See T–124 SAS UNIT REMOVAL/INSTALLATION)
No Replace seat cushion.
(See S–106 FRONT SEAT DISASSEMBLY/ASSEMBLY)
STEP INSPECTION ACTION
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