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 B1214:11, B1214:12, B1214:13, B1214:19 OR B1214:1A DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	INSPECT PASSENGER-SIDE FRONT PRETENSIONER SEAT BELT CONNECTOR WARNING: Handling the component parts improperly can accidentally operate (deploy) the air bag module, which may seriously injure you. Read the service warnings/cautions and the appropriate service information before handling the air bag system components. (See AIR BAG SYSTEM SERVICE WARNINGS [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .) (See AIR BAG SYSTEM SERVICE CAUTIONS [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .) Switch the ignition off. Disconnect the negative battery terminal and wait for 1 min or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .) Disconnect the passenger-side front pre-tensioner seat belt connector. (See FRONT SEAT BELT REMOVAL/INSTALLATION .) Inspect the passenger-side front pretensioner seat belt connector (wiring harness-side). (Corrosion, damage, and disconnected pins) Is there any malfunction of the passenger-side front pre-tensioner seat belt connector (wiring harness-side)?	Yes	Replace the malfunctioning part and perform the repair completion verification.
1		No	Go to the next step.
2	INSPECT PASSENGER-SIDE FRONT PRETENSIONER SEAT BELT DEPLOYMENT SIGNAL CIRCUIT FOR SHORT TO GROUND Disconnect the driver and passenger-side knee air bag module connectors. (See KNEE AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .) Disconnect the driver-side air bag module connectors. (See DRIVER-SIDE AIR BAG MODULE REMOVAL [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .) Disconnect the clock spring connectors. (See CLOCK SPRING REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .) Disconnect the passenger-side air bag module connectors. (See PASSENGER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .) Disconnect the driver and passenger-side front seat connectors. (See FRONT SEAT REMOVAL/INSTALLATION (US) .) Disconnect the driver and passenger-side curtain air bag module connectors. (See CURTAIN AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .) Disconnect the driver-side front pretensioner seat belt connector. (See FRONT SEAT BELT REMOVAL/INSTALLATION .) Disconnect the all SAS control module connectors. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .) Inspect the passenger-side front pretensioner seat belt deployment signal circuit for a short to ground. (See CIRCUIT INSPECTION .) NOTE: Inspect for a short to ground while shaking the wiring harness between the SAS control module and passenger-side front pre-tensioner seat belt. Is the circuit normal?	Yes	Go to the next step.
2		No	Repair or replace the malfunctioning location and perform the repair completion verification.
3	INSPECT PASSENGER-SIDE FRONT PRETENSIONER SEAT BELT DEPLOYMENT SIGNAL CIRCUIT FOR OPEN CIRCUIT Passenger-side front pre-tensioner seat belt and SAS control module connectors are disconnected. Inspect the passenger-side front pretensioner seat belt deployment signal circuit for open circuit. (See CIRCUIT INSPECTION .) NOTE: Inspect for open circuit while shaking the wiring harness between the SAS control module and passenger-side front pre-tensioner seat belt. Is the circuit normal?	Yes	Go to the next step.
3		No	Repair or replace the malfunctioning location and perform the repair completion verification.
4	INSPECT PASSENGER-SIDE FRONT PRETENSIONER SEAT BELT DEPLOYMENT SIGNAL CIRCUIT FOR SHORT TO EACH OTHER Passenger-side front pre-tensioner seat belt and SAS control module connectors are disconnected. Inspect the passenger-side front pretensioner seat belt deployment signal circuit for short to each other. (See CIRCUIT INSPECTION .) NOTE: Inspect for short to each other while shaking the wiring harness between the SAS control module and passenger-side front pre-tensioner seat belt. Is the circuit normal?	Yes	Go to the next step.
4		No	Repair or replace the malfunctioning location and perform the repair completion verification.
5	INSPECT PASSENGER-SIDE FRONT PRETENSIONER SEAT BELT DEPLOYMENT SIGNAL CIRCUIT FOR SHORT TO OTHER AIR BAG MODULE CIRCUIT Passenger-side front pre-tensioner seat belt and SAS control module connectors are disconnected. Other air bag module, pre-tensioner seat belt connectors are disconnected. Refer to the wiring diagram and inspect for continuity between the following terminals and other air bag module/pre-tensioner seat belt terminals (wiring harness-side). SAS control module terminal 2AH SAS control module terminal 2AD NOTE: Inspect for continuity while shaking the wiring harness between the SAS control module and passenger-side front pre-tensioner seat belt. Is there continuity?	Yes	Repair or replace the malfunctioning location and perform the repair completion verification.
5		No	Go to the next step.
6	INSPECT PASSENGER-SIDE FRONT PRETENSIONER SEAT BELT DEPLOYMENT SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY Passenger-side front pre-tensioner seat belt and SAS control module connectors are disconnected. Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .) Switch the ignition ON (engine off or on). Inspect the passenger-side front pretensioner seat belt deployment signal circuit for a short to power supply. (See CIRCUIT INSPECTION .) NOTE: Inspect for a short to power supply while shaking the wiring harness between the SAS control module and passenger-side front pre-tensioner seat belt. Is the circuit normal?	Yes	Go to the next step.
6		No	Repair or replace the malfunctioning location and perform the repair completion verification.
7	INSPECT PASSENGER-SIDE FRONT PRETENSIONER SEAT BELT Switch the ignition off. Disconnect the negative battery terminal and wait for 1 min or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .) Connect the SAS control module connectors. Except for the passenger-side front pre-tensioner seat belt connector, reconnect all disconnected connectors. Apply 2 ohms resistance to the passenger-side front pre-tensioner seat belt connector terminals A-B (wiring harness-side). Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .) Switch the ignition ON (engine off or on). 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 .) Are the same Pending DTCs present?	Yes	Perform the repair completion verification.
7		No	Replace the passenger-side front pre-tensioner seat belt and perform the repair completion verification. (See FRONT SEAT BELT REMOVAL/INSTALLATION .)
Repair completion verification	PERFORM SAS CONTROL MODULE DTC INSPECTION Switch the ignition off. Disconnect the negative battery terminal and wait for 1 min or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .) Disconnect the 2 ohms resistance. Connect the passenger-side front pretensioner seat belt connector. Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .) Switch the ignition ON (engine off or on). 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 .) Are the same Pending DTCs 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.