Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Air Bag Control Module: Testing and Inspection

SDM Inspection

CAUTION:
- Do not connect a tester whatever type it may be.






- Never repair or disassemble SDM.
- Be careful when handling a SDM so as not to cause vibration or impact including dropping. If SDM has been dropped, replace it even if there is no defect in appearance. Replace with new one in case of defect such as deformation and cracks.


If any faulty condition is found in the following checks, replace them with new one.
- Air bag is deployed.
- Check SDM for dents, cracks or deformation.
- Check SDM connector for damage, cracks or lock mechanism.
- Check SDM terminal for bend, corrosion or rust.
- DTC B1013, B1021, B1024, B1025, B1026, B1028, B1029, B1220 or B1221 is stored in SDM.