Diagnostic Procedure

WARNING: This page is about a different car, the 2009 Mazda 6. 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. 2) 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 .) (See AIR BAG SYSTEM SERVICE CAUTIONS .) Switch the ignition to off Disconnect the negative battery cable and wait for 1 min or more Remove the driver-side air bag module (See DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION .) Inspect the driver-side air bag module (inflator No 2) connector (Corrosion, damage, and disconnected pins) Is there any malfunction of the driver-side air bag module (inflator No 2) connector?	Yes	Replace the driver-side air bag wiring harness.
1		No	Go to the next step.
2	INSPECT DRIVER-SIDE AIR BAG MODULE (INFLATOR NO. 2) Connect the leads of the SST (Fuel and thermometer checker) or apply 2-ohm resistance to clock spring connector terminals 4A and 4B Set the resistance of the SST (Fuel and thermometer checker) to the 2-ohm position Connect the negative battery cable Switch the ignition to ON Clear DTCs using the M-MDS. (See CLEARING DTC .) Perform the DTC inspection for the SAS control module using the M-MDS (See DTC INSPECTION .) Are DTCs B0002:11, B0002:12, B0002:1A and/or B0002:1B displayed	Yes	Go to the next step.
2		No	Replace the driver-side air bag module. (See DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION .)
3	INSPECT CLOCK SPRING Switch the ignition to off Disconnect the negative battery cable and wait for 1 min or more Remove the steering wheel (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION [WITHOUT ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .) (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .) Remove the column cover (See COLUMN COVER REMOVAL/INSTALLATION .) Remove the clock spring (See CLOCK SPRING REMOVAL/INSTALLATION .) Inspect for continuity between clock spring connector terminals 1A-4A and 1B-4B Is there continuity?	Yes	Go to the next step.
3		No	Replace the clock spring. (See CLOCK SPRING REMOVAL/INSTALLATION .)
4	INSPECT WIRING HARNESS BETWEEN SAS CONTROL MODULE AND CLOCK SPRING Disconnect the SAS control module connector. Inspect the wiring harness between SAS control module connector terminal 3M and clock spring connector terminal 1A, and SAS control module connector terminal 3O and clock spring connector terminal 1B for the following: Short to ground Open circuit Short circuit between terminals NOTE: Inspect for continuity while shaking the wiring harness between the SAS control module and clock spring Is the wiring harness normal?	Yes	Go to the next step.
4		No	Replace the air bag wiring harness.
5	INSPECT THE WIRING HARNESS BETWEEN THE SAS CONTROL MODULE AND DRIVER-SIDE AIR BAG MODULE (INFLATOR N0.2) FOR A SHORT CIRCUIT TO THE POWER SUPPLY Connect the negative battery cable. Switch the ignition to ON. Measure the voltage of SAS control module connector terminals 3M and 3O of SAS control module harness side connector. NOTE: Measure the voltage while shaking the wiring harness between the SAS control module and driver-side air bag module Is the voltage measured?	Yes	Replace the air bag wiring harness.
5		No	Go to the next step.
6	INSPECT DTCs Switch the ignition to off. Disconnect the negative battery cable and wait for 1 min or more Reconnect all disconnected connectors. Connect the negative battery cable. Switch the ignition to ON. Clear DTCs using the M-MDS. (See CLEARING DTC .) Verify DTCs using the M-MDS (See DTC INSPECTION .) Is DTC B0002:11, B0002:12, B0002:1A and/or B0002.1B displayed again? Are there other DTCs output?	Yes	Replace the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION .)
6		No	DTC troubleshooting completed.