TROUBLESHOOTING
STEP
INSPECTION
ACTION
5
CHECK TO SEE WHETHER MALFUNCTION
IS IN AIR BAG SYSTEM WARNING LIGHT
IN INSTRUMENT CLUSTER OR SAS UNIT
• Connect instrument cluster connector
Yes
Replace SAS unit, then go to next step.
(See T-59 SAS UNIT REMOVAL/INSTALLATION)
terminal 1R to ground, then re-connect
connector.
• Does air bag system warning light
illuminate with ignition switch on?
No Replace instrument cluster, then go to next step.
(See Section T)
6 CONFIRM THAT MALFUNCTION
SYMPTOMS DO NOT REOCCUR AFTER
REPAIR
• Connect ail SAS unit connectors.
• Connect driver- and passenger-side pre-
tensioner seat belt connectors.
• Connect driver- and passenger-side side
air bag module connectors. (With side air
bag)
• Connect passenger-side air bag module
connector. (With passenger-side air bag)
• Connect clock spring connector.
• Connect instrument cluster connector.
• Connect negative battery cable.
• Turn ignition switch to ON position.
• Does air bag system warning light operate
properly?
Yes Complete troubleshooting, then explain repairs to
customer.
No Recheck malfunction symptoms, then repeat from Step
1 if malfunction recurs.
No. 2 AIR BAG SYSTEM WARNING LIGHT IS ILLUMINATED ALL THE TIME.
2 Air bag system warning light is illuminated all the time.
DETECTION
CONDITION
Malfunction in air bag system warning circuit (short to ground).
POSSIBLE
CAUSE
• SAS unit malfunction
• Instrument cluster (print plate) malfunction
• Malfunction of short bar between terminals 2W and 2T of SAS unit connector
• No connection in SAS unit connector
• Short circuit in wiring harness between instrument cluster and SAS unit
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 malfunctions. If
there is a problem, check to make sure connectors, terminals and wiring harness are connected correctly and
undamaged.
STEP
INSPECTION ACTION
1 VERIFY THAT SAS UNIT IS CONNECTED
Warning
• Handling air bag system components
improperly can accidentally deploy air
bag modules and pre-tensioner seat
belts, which may seriously injure you.
Read SERVICE WARNINGS before
handling air bag system components.
See T-56 SERVICE WARNINGS
• Turn ignition switch to LOCK position.
• Disconnect negative battery cable and wait
for more than 1 minute.
• Remove left side side wall.
• Are all SAS unit connectors securely
connected?
Yes
Go to next step.
No Reconnect it properly, then go to Step 6.
T-106
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