Hummer H2. Manual - part 19

Fig. 31: Locating Passenger Air Bag Connector (C230 & C280) 
Courtesy of MERCEDES-BENZ OF NORTH AMERICA 

Disabling System (E300D, E300DT, E320, E420 & E430) 

Turn ignition off and remove ignition key. Disconnect and shield negative battery cable. Remove passenger foot 
mat. Remove passenger footrest. Disconnect SRS system connector (X29/9) located at passenger footwell area. 
See Fig. 32 . System is now disabled.  

Activating System 

Ensure ignition is off. Reconnect SRS system connector. Reconnect negative battery cable. System is now 
activated. Perform SYSTEM OPERATION CHECK . 

 

1997 Lexus SC 300 

GENERAL INFORMATION Air Bag Deactivation Procedures

  

Fig. 32: Locating SRS Connector (E300D, E300DT, E320, E420 & E430) 
Courtesy of MERCEDES-BENZ OF NORTH AMERICA 

Disabling System (S320, S420 & S500) 

Turn ignition off and remove ignition key. Disconnect and shield negative battery cable. Remove passenger foot 
mat. Remove passenger footrest. Disconnect Red SRS system connector (X11/13) located at passenger footwell 
area. See Fig. 33 . System is now disabled.  

Activating System 

Ensure ignition is off. Reconnect Red SRS system connector. Reconnect negative battery cable. System is now 
activated. Perform SYSTEM OPERATION CHECK . 

 

1997 Lexus SC 300 

GENERAL INFORMATION Air Bag Deactivation Procedures

  

Fig. 33: Locating Red SRS Connector (S320, S420 & S500) 
Courtesy of MERCEDES-BENZ OF NORTH AMERICA 

MITSUBISHI 

SYSTEM OPERATION CHECK 

Turn ignition on. SRS warning light on instrument panel should come on for about 7 seconds then turn off. This 
indicates SRS is functioning properly. If SRS warning light does not come on, stays on, or comes on while 
driving, SRS is malfunctioning and needs repair.  

SERVICE PRECAUTIONS 

Observe the following precautions when working with SRS:  

z

Disable SRS before servicing any SRS or steering column component. Failure to do this may result in 
accidental air bag deployment and possible personal injury.  

z

Wait at least ONE MINUTE after disabling air bag system before servicing vehicle. Air bag system 
maintains enough voltage to deploy air bags for ONE MINUTE after disconnecting battery. 

 

1997 Lexus SC 300 

GENERAL INFORMATION Air Bag Deactivation Procedures

  

z

After servicing, check SRS warning light to verify system operation. See SYSTEM OPERATION 
CHECK .  

z

Always wear safety glasses when servicing or handling an air bag.  

z

DO NOT expose air bag module and clockspring to temperatures greater than 200°F (93°C).  

z

When placing a live air bag module on a bench or other surface, always face air bag module and trim 
cover up, away from surface. This will reduce motion of module if air bag accidentally deploys.  

z

After air bag deploys, air bag surface may contain deposits of sodium hydroxide, which irritates skin. 
Always wear safety glasses, rubber gloves and long-sleeved shirt during clean-up. Wash hands using mild 
soap and water. Follow correct clean-up and disposal procedures.  

z

Because of critical system operating requirements, DO NOT service any SRS components, including 
wiring harness. Repairs are only made by replacing defective component(s).  

z

DO NOT allow any electrical source near inflator on the back of air bag module.  

z

When carrying a live (undeployed) air bag module, trim cover must be pointed away from body to 
minimize injury in case of accidental air bag deployment.  

z

DO NOT probe a wire through insulator, as this will damage wire and eventually cause failure due to 
corrosion.  

z

If SRS is not fully functional for any reason, DO NOT drive vehicle until system is repaired and is fully 
functional. DO NOT remove bulbs, modules, sensors or other components, or in any way disable system 
from operating normally. If SRS is not functional, park vehicle until repairs are made.  

DISABLING & ACTIVATING AIR BAG SYSTEM 

To disable system, turn ignition switch to LOCK position. Disconnect and isolate negative battery cable. Wait 
at least ONE MINUTE before servicing vehicle. To activate system, ensure ignition switch is in LOCK position 
and reconnect negative battery cable. Staying well away from air bag modules, turn ignition switch to ON 
position. Ensure AIR BAG indicator light operates properly, see SYSTEM OPERATION CHECK .  

NISSAN 

SYSTEM OPERATION CHECK 

Turn ignition on. AIR BAG warning light should come on for about 7 seconds and then go off, indicating SRS 
is okay. If AIR BAG warning light does not come on, service Supplemental Restraint System (SRS). If AIR 
BAG warning light stays on constantly, service SRS. If AIR BAG warning light comes on for about 7 seconds, 
goes off, then starts flashing, a fault code is set in memory.  

SERVICE PRECAUTIONS 

Observe these precautions when working with air bag systems: 

NOTE:

On vehicles equipped with seat belt pretensioner, the seat belt warning light 
should also come on for about 7 seconds and then go off (with seat belt 
fastened). 

 

1997 Lexus SC 300 

GENERAL INFORMATION Air Bag Deactivation Procedures