Specifications

T234
TROUBLESHOOTING
6 INSPECT POWER SUPPLY CIRCUIT OF SAS
UNIT (TERMINAL 1W)
• Turn ignition switch to LOCK position.
• Disconnect negative battery cable and wait
for more than 1 minute.
• Connect all SAS unit connectors.
• Connect driver and passenger-side
pre-tensioner seat belt connectors. (Vehicles
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. (Vehicles with side
air bag)
• Connect passenger-side air bag module
connector.
• Connect clock spring connector.
• Inspect voltage for PID/DATA monitor RCM
VOLT item using SST (WDS or equivalent ).
• Is voltage of at least either terminal more
than 9 V?
Yes Go to Step 9.
No Go to next step.
7 INSPECT WIRING HARNESS BETWEEN
BATTERY AND FUSE BLOCK
• Remove driver-side front side trim.
• Remove fuse block without disconnecting
connectors.
• Turn ignition switch to ON position.
• Measure voltage at terminals D (JB01) of
fuse block connector.
• Is voltage of at least either terminal more
than 9 V?
Yes Go to next step.
No Repair wiring harnesses, then go to Step 10.
8 INSPECT WIRING HARNESS BETWEEN
FUSE BLOCK AND SAS UNIT
• Measure voltage at terminals G (JB03) of
fuse block connector.
• Is voltage of at least either terminal more
than 9 V?
Yes Repair wiring harnesses, then go to Step 10.
No Inspect fuse block, then go to Step 10.
9 VERIFY THAT SAS UNIT CONNECTOR
TERMINAL 1X IS GROUND
• 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. (Vehicles 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 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 wiring harness between SAS unit
connector terminal 1X and ground for
following:
 Short to power supply
 Open circuit
• Is wiring harness okay?
Yes Replace SAS unit, then go to next step.
(See T124 SAS UNIT REMOVAL/INSTALLATION)
No Replace wiring harnesses, then go to next step.
STEP INSPECTION ACTION