ON-BOARD DIAGNOSTIC [AIR BAG SYSTEM]
T–209
T
End Of Sie
3 VERIFY WHETHER MALFUNCTION IS IN
DRIVER-SIDE AIR BAG MODULE (INFLATOR
NO.1) OR RELATED WIRING HARNESS
• Connect leads of SST (Fuel and
thermometer checker) or apply 2 ohm
resistor to driver-side air bag module (inflator
No.1) connector terminal 3A and 3B, and
driver-side air bag module (inflator No.2)
connector terminal 4A and 4B.
• Set resistance of SST (Fuel and
thermometer checker) to 2 ohm.
• Connect negative battery cable.
• Turn ignition switch to ON position.
• Check following PID/DATA monitor, using
SST (WDS or equivalent).
(See T–195 PID/DATA MONITOR TABLE)
— OD_DAB1_ST
• Is related wiring harness normal?
Yes Replace driver-side air bag module.
(See T–120 DRIVER-SIDE AIR BAG MODULE REMOVAL/
INSTALLATION)
No Go to next step.
4 INSPECT CLOCK SPRING
• Inspect clock spring.
(See T–126 CLOCK SPRING INSPECTION)
• Is clock spring normal?
Yes Go to next step.
No Replace clock spring.
(See T–125 CLOCK SPRING REMOVAL/INSTALLATION)
5 INSPECT WIRING HARNESS BETWEEN
CLOCK SPRING AND SAS UNIT
• 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.
• Inspect following wiring harnesses between
SAS unit and clock spring terminals for short
to ground, short to power supply, and open
circuit:
— 1S—1D
— 1V—1C
• Is wiring harness okay?
Yes
Present malfunction diagnosis:
• Replace SAS unit.
(See T–124 SAS UNIT REMOVAL/INSTALLATION)
Past malfunction diagnosis:
• Troubleshooting completed.
No Replace wiring harnesses.
STEP INSPECTION ACTION
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