DTC 56 SDM Not Reusable. Cadillac Catera 1999

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 1999 🢒 Catera 🢒 DTC 🢒 DTC 56 SDM Not Reusable

DTC 56 is an indication of a potential internal inflatable restraint Sensing and Diagnostic Module (SDM) malfunction and requires SDM replacement.

•	There has been a frontal air bag and pretensioners deployment commanded.

•	There have been three pretensioner-only deployments commanded by this SDM.

•	There have been three driver side air bag deployments commanded by this SDM.

•	There have been three passenger side air bag deployments commanded by this SDM.

•	The SDM sets a DTC 56.

•	The SDM turns ON the AIR BAG warning lamp.

Replaceing the SDM will clear DTC 56.

The numbers below refer to the step numbers on the diagnostic table:

This DTC requires the replacement of the SDM.

Step	Action	Value(s)	Yes	No
1	Was the SIR Diagnostic System Check performed?	--	Go to Step 2	Go to SIR Diagnostic System Check
2	Turn the ignition switch to the OFF position. Replace the inflatable restraint sensing and diagnostic and seat belt pretenioner module (SDM). Refer to Inflatable Restraint Sensing and Diagnostic and Seat Belt Pretensioner Module Replacement . Is the replacement complete?	--	Go to SIR Diagnostic System Check	--

Step

Action

Value(s)

Yes

Was the SIR Diagnostic System Check performed?

Turn the ignition switch to the OFF position.
Replace the inflatable restraint sensing and diagnostic and seat belt pretenioner module (SDM). Refer to Inflatable Restraint Sensing and Diagnostic and Seat Belt Pretensioner Module Replacement .

Is the replacement complete?