Diagnostic Procedure

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

Step	Inspection		Action
1	INSPECT DRIVER-SIDE AIR BAG MODULE (INFLATOR NO. 1) 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 service information before handling the air bag system components. (See AIR BAG SYSTEM SERVICE WARNINGS [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) (See AIR BAG SYSTEM SERVICE CAUTIONS [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) Switch the ignition to off. Disconnect the negative battery cable and wait for 1 min or more. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Disconnect the driver-side air bag module (inflator No. 1) connector. (See DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) Inspect the clock spring connector. (Corrosion, damage, and disconnected pins) Is there any malfunction of the clock spring connector?	Yes	Replace clock spring. (See CLOCK SPRING REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) Then go to Step 7.
1		No	Go to the next step.
2	INSPECT CLOCK SPRING Remove the steering wheel. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION .) Remove the column cover. (See COLUMN COVER REMOVAL/INSTALLATION .) Remove the clock spring. (See CLOCK SPRING REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) Inspect for continuity between clock spring connector terminals 2B-4A and 2A-4B. NOTE: Inspect the clock spring wiring harness for continuity while shaking it. Is there continuity?	Yes	Go to the next step.
2		No	Replace clock spring. (See CLOCK SPRING REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) Then go to Step 7.
3	INSPECT DRIVER-SIDE AIR BAG MODULE (INFLATOR NO. 1) CIRCUIT FOR SHORT TO GROUND Remove the glove compartment. (See GLOVE COMPARTMENT REMOVAL/INSTALLATION .) Disconnect the passenger-side air bag module connector. (See PASSENGER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) Disconnect the driver and passenger-side front seat connector. (See FRONT SEAT REMOVAL/INSTALLATION .) Remove the headliner. (See HEADLINER REMOVAL/INSTALLATION .) Disconnect the driver and passenger-side curtain air bag module connectors. (See CURTAIN AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) Remove the B-pillar lower trim. (See B-PILLAR LOWER TRIM REMOVAL/INSTALLATION .) Disconnect the driver and passenger-side pre-tensioner seat belt connectors. Disconnect the driver and passenger-side lap pre-tensioner seat belt connectors. (See FRONT SEAT BELT REMOVAL/INSTALLATION .) Remove the rear console. (See REAR CONSOLE REMOVAL/INSTALLATION .) Disconnect the all SAS control module connectors. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) Inspect for continuity between the following terminals (wiring harness-side) and body ground: SAS control module terminal 3H SAS control module terminal 3J NOTE: Inspect for continuity while shaking the wiring harness between the SAS control module and clock spring. Is there continuity?	Yes	Replace the wiring harness for a possible short to ground, then go to Step 7.
3		No	Go to the next step.
4	INSPECT DRIVER-SIDE AIR BAG MODULE (INFLATOR NO. 1) CIRCUIT FOR OPEN CIRCUIT Clock spring and SAS control module connectors are disconnected. Inspect for continuity between the following terminals (wiring harness-side): Clock spring terminal 2B-SAS control module terminal 3J Clock spring terminal 2A-SAS control module terminal 3H NOTE: Inspect for continuity while shaking the wiring harness between the SAS control module and clock spring. Is there continuity?	Yes	Go to the next step.
4		No	Replace the wiring harness for a possible open circuit, then go to Step 7.
5	INSPECT DRIVER-SIDE AIR BAG MODULE (INFLATOR NO. 1) CIRCUIT FOR SHORT TO POWER SUPPLY Clock spring and SAS control module connectors are disconnected. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Switch the ignition ON (engine off or on). Measure the voltage at the following terminals (wiring harness-side): SAS control module terminal 3H SAS control module terminal 3J NOTE: Measure the voltage while shaking the wiring harness between the SAS control module and clock spring. Is the voltage 0V ?	Yes	Go to the next step.
5		No	Replace the wiring harness for a possible short to power supply, then go to Step 7.
6	INSPECT DRIVER-SIDE AIR BAG MODULE Switch the ignition to off. Disconnect the negative battery cable and wait for 1 min or more. Connect the SAS control module connectors. Except for the driver-side air bag module (inflator No. 1) connector, reconnect all disconnected connectors. Connect the SST (Fuel and thermometer checker) or apply 2 ohms resistance to clock spring connector terminals 4A and 4B. Set the SST (Fuel and thermometer checker) to 2 ohms. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Switch the ignition ON (engine off or on). Clear the DTC for the SAS control module using the M-MDS. (See CLEARING DTC [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) Perform the DTC inspection for the SAS control module using the M-MDS. (See DTC INSPECTION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) Are the same DTCs present?	Yes	Go to the next step.
6		No	Replace the driver-side air bag module. (See DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) Then go to the next step.
7	PERFORM SAS CONTROL MODULE DTC INSPECTION Switch the ignition to off. Disconnect the negative battery cable and wait for 1 min or more. Disconnect the SST (Fuel and thermometer checker) or the 2 ohms resistance. Connect the driver-side air bag module (inflator No. 1) connector. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Switch the ignition ON (engine off or on). Clear the DTC for the SAS control module using the M-MDS. (See CLEARING DTC [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) Perform the DTC inspection for the SAS control module using the M-MDS. (See DTC INSPECTION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) Are the same DTCs present?	Yes	Replace the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .)
7		No	DTC troubleshooting completed.