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Test B: Air Bag Warning Light Stays On Constant After Ignition Is Turned On

WARNING: This page is about a different car, the 2002 Mazda Millenia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Before proceeding, see AIR BAG SAFETY PRECAUTIONS . Ensure ignition switch is in LOCK position. Remove negative battery cable. Wait more than one minute for back-up power supply to dissipate. Turn up floor covering to access SAS control module. If all SAS control module connectors are securely connected, go to next step. If SAS control module connector are not securely connected, reconnect properly. Go to step  6.
  2. Disable air bag system. See DISABLING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. Visually inspect SAS control module connector terminals No. 2W and 2T. See Figure. If short bar between terminals is bent or damaged, replace wiring harness. Go to step  6. If short bar is okay, go to next step.
  3. Visually inspect SAS control module short bar hook. If SAS control module short bar hook is okay go to next step. If SAS control module short bar hook is damaged. replace SAS control module. See SAS CONTROL MODULE  under REMOVAL & INSTALLATION. Go to step  6.
  4. Remove instrument cluster and disconnect connectors. Insert insulating material between SAS control module connector terminals No. 2W (White/Green wire) and No. 2T (Black/Orange wire). Check for continuity between ground and SAS control module connector terminal No. 2W (White/Green wire). If continuity exists, replace wire harness. If continuity does not exist, go to next step.
  5. Check for continuity between instrument cluster printed circuit terminal No. 3K and terminals No. 3O and 3Q. See Figure. If continuity exists, replace instrument cluster. Go to next step. If continuity does not exist, replace SAS control module. Go to next step.
  6. Reconnect all connectors. Install instrument cluster. Activate air bag system and perform SYSTEM OPERATION CHECK . If AIR BAG warning light is operating properly, test is complete. If AIR BAG warning light does not operate properly, recheck malfunction symptoms, then repeat from step  1 if malfunction recurs.
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