TROUBLESHOOTING
T–231
T
End Of Sie
NO.1 AIR BAG SYSTEM WARNING LIGHT DOES NOT ILLUMINATE
A6E818001046W02
Diagnostic Procedure
• When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while
doing the inspection to discover whether poor contact points are the cause of any intermittent malfunction. If
there is a problem, check to make sure connectors, terminals and wiring harness are connected correctly and
undamaged.
2
Air bag system warning light is
illuminated all the time.
Malfunction in air bag system warning
circuit (open circuit or short to power
supply).
(See T–232 NO.2 AIR BAG SYSTEM
WARNING LIGHT IS ILLUMINATED
ALL THE TIME)
3
Passenger-side air bag cut-off
indicator light does not illuminate.
Malfunction in passenger-side air bag
cut-off indicator light circuit (open
circuit or short to power supply).
(See T–235 NO.3 PASSENGER-SIDE
AIR BAG CUT-OFF INDICATOR
LIGHT DOES NOT ILLUMINATE)
4
Passenger-side air bag cut-off
indicator light is illuminated all the
time.
Malfunction in passenger-side air bag
cut-off indicator light circuit (short to
ground).
(See T–237 NO.4 PASSENGER-SIDE
AIR BAG CUT-OFF INDICATOR
LIGHT IS ILLUMINATED ALL THE
TIME)
No. Troubleshooting item Description Page
1 Air bag system warning light does not illuminate.
DETECTION
CONDITION
Malfunction in air bag system warning light circuit (short to ground)
POSSIBLE
CAUSE
• SAS unit malfunction
• Instrument cluster (print plate) malfunction
• Short to ground circuit in wiring harness between instrument cluster and SAS unit
STEP INSPECTION ACTION
1 INSPECT OTHER WARNING AND
INDICATOR LIGHTS CIRCUIT IN
INSTRUMENT CLUSTER
• Turn ignition switch to ON position.
• Do other warning and indicator lights
illuminate?
Yes Turn ignition switch to LOCK position, then go to next step.
No Inspect instrument cluster power supply system and ground
system, then go to Step 5.
2 INSPECT 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. (Vehicles with
side air bag)
• Disconnect driver and passenger-side
curtain air bag module connectors. (Vehicles
with curtain air bag)
• Remove B-pillar lower trims. (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.
• Connect negative battery cable.
• Turn ignition switch to ON position.
• Do air bag system warning light illuminate?
Yes Replace SAS unit, then go to Step 5.
(See T–124 SAS UNIT REMOVAL/INSTALLATION)
No Go to next step.
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