DTC 22: Left-Side Air Bag Sensor Malfunction
WARNING: This page is about a different car, the 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
On models equipped without side air bags, DTCs 22, 25, 26, 32, 35, or 37 may be indicated concurrently. Diagnose the problem using the smallest DTC only.
- Before proceeding, see AIR BAG SAFETY PRECAUTIONS . On models equipped without side air bags, go to step 6. On models equipped with side air bags, turn ignition switch to ON position. Wait 60 minutes or more. If DTC 22 is indicated, go to next step. If DTC 22 is not indicated, test is complete.
- Turn ignition switch to LOCK position. Disable air bag system. See DISABLING SYSTEM under DISABLING & ACTIVATING AIR BAG SYSTEM. Access SAS control module and disconnect all harness connectors. See SAS CONTROL MODULE under REMOVAL & INSTALLATION. Inspect air bag system wiring harness between SAS control module terminal 1B and left-side air bag sensor connector terminal "A" (White wire), between SAS control module connector terminal 1D and left-side air bag sensor connector terminal "B" (White/Black wire), between SAS control module connector terminal 1F and left-side air bag sensor connector terminal "C" (White/Red wire), and between SAS control module connector terminal 1E and left-side air bag sensor connector terminal "D" (White/Blue wire) for short to ground, short to power supply or an open circuit. See Figure & Fig 1 . If wiring harness is okay, and DTC 22 is a present malfunction DTC, go to next step. If wiring harness is okay, and DTC 22 is a past malfunction DTC, replace left side air bag sensor and go to step 7. See SIDE AIR BAG SENSOR under REMOVAL & INSTALLATION. If wiring harness is not okay, replace air bag wiring harness and go to step 7.
- Measure continuity between SAS connector terminals 1F and 2Q. See Figure. If there is continuity, go to next step. If there is not continuity, replace SAS control module and go to step 7. See SAS CONTROL MODULE under REMOVAL & INSTALLATION.
- Reconnect connectors to SAS control module, clockspring, passenger-side air bag module, driver- and passenger-side seat belt pretensioners and, right- and left-side air bag modules. Reconnect negative battery cable. Turn ignition on and measure voltage between ground and left-side air bag sensor connector terminal "A". See Fig 1. If voltage is about 5 volts, replace left-side air bag sensor and go to next step. See SIDE AIR BAG SENSOR under REMOVAL & INSTALLATION. If voltage is not about 5 volts, replace SAS control module and go to step 7. See SAS CONTROL MODULE under REMOVAL & INSTALLATION.
- Disconnect negative battery cable. Wait at more than one minute for back-up power to deplete. Connect left-side air bag sensor connector. Reconnect negative battery cable and turn ignition switch to ON position. If DTC 22 is indicated, replace SAS control module and go to step 7. See SAS CONTROL MODULE under REMOVAL & INSTALLATION. If DTC 22 is not indicated, go to step 7.
- Disable air bag system. See DISABLING SYSTEM under DISABLING & ACTIVATING AIR BAG SYSTEM. Access SAS control module and disconnect all connectors. See SAS CONTROL MODULE under REMOVAL & INSTALLATION. Check air bag wiring harness between ground and SAS connector terminal 2AA (Gray wire) for short to power supply or open circuit. See Figure. If wiring harness is okay and DTC 22 was retrieved as a present malfunction DTC, replace SAS control module and go to next step. If wiring harness is okay and DTC 22 was retrieved as a past malfunction DTC, go to next step. If wiring harness is not okay, replace air bag wiring harness and go to next step.
- Disconnect negative battery cable. Reconnect all connectors and install previously removed components. Reconnect negative battery cable. Clear past malfunction DTCs. See CLEARING PAST MALFUNCTION DTCS under DIAGNOSTICS. Perform system operation check. See SYSTEM OPERATION CHECK . If AIR BAG warning light operates normally, trouble shooting is complete. If AIR BAG warning light does not operate normally, reconfirm malfunction symptoms.