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Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC B2296 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 INSPECT CRASH ZONE SENSOR CONNECTOR 
WARNING:
  • Handling the air bag system components improperly can accidentally operate (deploy) the air bag modules and pre-tensioner seat belts, which may seriously injure you. Read the service warnings and cautions before handling the air bag system components.

    (See SERVICE WARNINGS .)

    (See SERVICE CAUTIONS .)


  • Turn the ignition switch to the LOCK position.
  • Disconnect the negative battery cable and wait for 1 min or more. 
  • Disconnect the crash zone sensor connector.
  • Is there any malfunction of the crash zone sensor connector?
 Yes Replace wiring harnesses.
No Go to next step.
2 INSPECT WIRING HARNESS BETWEEN CRASH ZONE SENSOR AND SAS CONTROL MODULE 
  • 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. (Vehicles with pre-tensioner seat belt)
  • Disconnect driver and passenger-side pre-tensioner seat belt connectors. (Vehicles with pre-tensioner seat belt)
  • Turn up floor covering.
  • Disconnect all SAS control module connectors.
  • Disconnect crash zone sensor connector.
  • Connect negative battery cable.
  • Inspect the following wiring harnesses between SAS control module and crash zone sensor terminals for short to ground, short to power supply, and open circuit:
    • 1B-A
    • 1C-B
  • Is wiring harness okay?
 Yes Replace crash zone sensor, then go to next step. (See CRASH ZONE SENSOR REMOVAL/INSTALLATION .)
No Replace wiring harnesses.
3 INSPECT SAS CONTROL MODULE 
  • Turn ignition switch to LOCK position.
  • Disconnect negative battery cable and wait for more than 1 minute. 
  • Connect all SAS control module connectors.
  • Connect crash zone sensor connector.
  • Is DTC B2296 indicated?
 Yes Present malfunction diagnosis: 

Past malfunction diagnosis: 
  • Troubleshooting completed.
No Troubleshooting completed.
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