NO.2 AIR BAG SYSTEM WARNING LIGHT ILLUMINATES IMMEDIATELY AFTER IGNITION SWITCH IS TURNED TO ON POSITION AND REMAINS ILLUMINATED

BME080301046203

• 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.

2

Air bag system warning light illuminates immediately after ignition switch is turned to ON position and remains illuminated.

TROUBLESHOOTING HINTS

• Malfunction in air bag system warning light circuit
- Instrument cluster (print plate) malfunction
- Malfunction of short bar between SAS unit connector terminals 2W and 2T
- No connection in SAS unit connector
- Short circuit in wiring harness between instrument cluster and SAS unit
- SAS unit malfunction
Note
• When inserting insulator between SAS unit connector terminals and short bar, insert it as shown in the figure.

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY THAT SAS UNIT CONNECTOR 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 AIR BAG SYSTEM SERVICE WARNINGS before handling air bag system components.
• Turn ignition switch to LOCK position.
• Disconnect negative battery cable and wait for more than 1 minute.
• Turn up floor covering.
• Are all SAS unit connectors securely connected?
Yes
Go to next step.
No
Reconnect connector properly, then go to Step 6.
2
INSPECT SAS UNIT TERMINALS 2W AND 2T
• Remove clock spring.
• 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)
• 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)
• Disconnect all SAS unit connectors.
• Is short bar between SAS unit connector terminals 2W and 2T bent?
Yes
Replace wiring harness, then go to Step 6.
No
Go to next step.
3
INSPECT SHORT BAR HOOK OF SAS unit
• Is short bar hook of SAS unit okay?
Yes
Go to next step.
No
Replace SAS unit, then go to Step 6.
* 4
INSPECT WIRING HARNESS BETWEEN SAS UNIT AND INSTRUMENT CLUSTER FOR SHORT TO GROUND
• Remove instrument cluster.
Caution
• Be sure not to cause damage to short bar when inserting insulator. If short bar is damaged, you may not be able to properly inspect connection of SAS unit connector.
• Insert insulator between SAS unit connector terminals 2W and 2T so short bar cannot function.
• Is there continuity between SAS unit connector terminal 2W and ground?
Yes
Replace wiring harness, then go to Step 6.
No
Go to next step.
5
INSPECT FOR SHORT TO GROUND IN INSTRUMENT CLUSTER CIRCUIT
• Is there continuity between terminal 3R and any of following terminals of print plate on instrument cluster?
- Terminal 3D
- Terminal 3A
Yes
Replace instrument cluster, then go to next step.
No
Replace SAS unit, then go to next step.
6
VERIFY WHETHER MALFUNCTION SYMPTOM OCCURS AFTER REPAIR OR NOT
• Connect all SAS unit connectors.
• Connect driver and passenger-side
pre-tensioner seat belt connectors.(Vehicle with pre-tensioner seat belt)
• Disconnect 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 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.