Diagnostic Procedure

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

DTC B00D2:29 (AIRBAG) (US) DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	INSPECT DTCs IN SAS CONTROL MODULE Clear the DTC for the SAS control module using the M-MDS. (See CLEARING DTC .) Perform the DTC inspection for the SAS control module using the M-MDS. (See DTC INSPECTION .) Is DTC U0001:88, U0155:00 or U0156:00 displayed?	Yes	Perform the applicable DTC inspection. (See DTC TABLE (AIRBAG) (US) .)
1		No	Go to the next step.
2	INSPECT INSTRUMENT CLUSTER Verify that the instrument cluster is correctly installed. Is the instrument cluster correctly installed?	Yes	Go to the next step.
2		No	Correctly install the instrument cluster and perform the repair completion verification. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)
3	INSPECT INSTRUMENT CLUSTER Switch the ignition ON (engine off). Does the air bag system warning light illuminate?	Yes	Perform the repair completion verification.
3		No	Replace the instrument cluster and perform the repair completion verification. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)
Repair completion verification	PERFORM SAS CONTROL MODULE DTC INSPECTION Clear the DTC for the SAS control module using the M-MDS. (See CLEARING DTC .) Perform the DTC inspection for the SAS control module using the M-MDS. (See DTC INSPECTION .) Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW (US) .) If the CAN communication is normal, perform the diagnosis from Step 1. If the malfunction recurs, replace the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .)
Repair completion verification		No	DTC troubleshooting completed.