Leganza CDX L4-2.2L DOHC D-TEC MFI (1999)
Malfunction Lamp / Indicator: Description and Operation
The instrument cluster contains an AIRBAG warning indicator. To verify the operation of the AIRBAG indicator and the sensing and diagnostic module
(SDM), the SDM performs a turn-on test when the ignition is turned ON. The SDM flashes the AIRBAG indicator seven times by supplying an
intermittent ground to the indicator lamp circuit.
After flashing seven times, the AIRBAG indicator will turn off if the SDM detects no malfunctions.
The AIRBAG indicator stays on if the SDM has detected malfunctions in the internal or external circuits which could potentially affect the operation of
the supplemental inflatable restraint (SIR) system. Some malfunctions could result in nondeployment when necessary or deployment under conditions
which would not normally result in deployment.
When the SDM is not properly attached to its connector, the SDM connector supplies a ground to the AIRBAG indicator by connecting the wire from
the warning lamp to the SDM ground wire, and the AIRBAG indicator turns on.
