Diagnostic procedure

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.

Step	Inspection		Action
1	BATTERY INSPECTION Refer to the battery inspection and inspect the battery. (Refer to NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .) Is the battery normal?	Yes	Go to the next step.
1		No	Replace or charge the battery. (Refer to NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .) (Refer to BATTERY RECHARGING .) Then go to Step 5.
2	FUSE INSPECTION Switch the ignition off. Disconnect the negative battery cable and wait 1 min or more. (Refer to NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .) Remove the SRS1 7.5 A fuse. Is the fuse normal?	Yes	Go to the next step.
2		No	Replace the SRS1 7.5 A fuse. Then go to Step 5.
3	INSPECT WIRING HARNESS BETWEEN SAS CONTROL MODULE AND IG1 RELAY WARNING: Handling the component parts improperly can accidentally operate (deploy) the air bag modules and pre-tensioner seat belts, which may seriously injure you. Read the service warnings/cautions and the workshop article before handling the air bag system components. (Refer to AIR BAG SYSTEM SERVICE WARNINGS [STANDARD DEPLOYMENT CONTROL SYSTEM] .) (Refer to AIR BAG SYSTEM SERVICE CAUTIONS [STANDARD DEPLOYMENT CONTROL SYSTEM] .) Remove the column cover. (Refer to COLUMN COVER REMOVAL/INSTALLATION .) Disconnect the clock spring connector. (Refer to CLOCK SPRING REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM] .) Remove the glove compartment. (Refer to GLOVE COMPARTMENT REMOVAL/INSTALLATION .) Disconnect the passenger-side air bag module connector. (Refer to PASSENGER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) Disconnect the driver and passenger-side front seat connectors. (with side air bag module) (Refer to FRONT SEAT REMOVAL/INSTALLATION .) Remove the B-pillar lower trim. (Refer to B-PILLAR LOWER TRIM REMOVAL/INSTALLATION .) Disconnect the driver and passenger-side pre-tensioner seat belt connectors. (Refer to FRONT SEAT BELT REMOVAL/INSTALLATION .) Disconnect all SAS control module connectors. (Refer to SAS CONTROL MODULE REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM] .) Connect the negative battery cable. (Refer to NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .) Switch the ignition ON (engine off or on). Measure the voltage of SAS control module connector terminal 2AD (wiring harness-side). NOTE: Measure the voltage while shaking the wiring harness between the SAS control module and IG1 relay. Is the voltage 8-16V ?	Yes	Go to the next step.
3		No	Refer to the wiring diagram and verify whether or not there is a common connector between SAS control module terminal and IG1 relay terminal. If there is a common connector: Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit or short to ground. Replace the malfunctioning part. If there is no common connector: Replace the wiring harness which has an open circuit or short to ground. Go to Step 5.
4	INSPECT SAS CONTROL MODULE CIRCUIT FOR OPEN CIRCUIT SAS control module connectors are disconnected. Switch the ignition off. Disconnect the negative battery cable and wait 1 min or more. (Refer to NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .) Inspect the wiring harness between SAS control module connector terminal 2X, 2AB (wiring harness-side) and body ground. NOTE: Inspect for continuity while shaking the wiring harness between the SAS control module and body ground. Is there continuity?	Yes	Go to the next step.
4		No	Refer to the wiring diagram and verify whether or not there is a common connector between SAS control module terminal and body ground. If there is a common connector: Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. Replace the malfunctioning part. If there is no common connector: Replace the wiring harness which has an open circuit. Go to the next step.
5	PERFORM SAS CONTROL MODULE DTC INSPECTION Connect the SAS control module connectors. Reconnect all disconnected connectors. Connect the negative battery cable. (Refer to NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .) Switch the ignition ON (engine off or on). Clear the DTC for the SAS control module using the M-MDS. (Refer to CLEARING DTC [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)] .) Perform the DTC inspection for the SAS control module using the M-MDS. (Refer to DTC INSPECTION [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)] .) Are the same DTCs present?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the SAS control module. (Refer to SAS CONTROL MODULE REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM] .)
5		No	DTC troubleshooting completed.