Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DTC B1913, B1925, B1933, B1935 DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	INSPECT PASSENGER-SIDE AIR BAG MODULE (INFLATOR NO. 1) Check the following PID/DATA monitor, using SST (WDS or equivalent). (See PID/DATA MONITOR TABLE .) PABAGR Is resistance of passenger-side air bag module normal? Resistance: 1.4-2.9 ohms	Yes	Present malfunction diagnosis: Replace SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION .) Past malfunction diagnosis: Troubleshooting completed.
1		No	Go to next step.
2	INSPECT PASSENGER-SIDE AIR BAG MODULE (INFLATOR NO. 1) CONNECTOR WARNING: Handling air bag system components improperly can accidentally deploy air bag modules and pre-tensioner seat belts, which may seriously injure you. Read AIR BAG SYSTEM SERVICE WARNINGS before handling air bag system components. (See SERVICE WARNINGS .) (See SERVICE CAUTIONS .) Turn ignition switch to LOCK position. Disconnect negative battery cable and wait for more than 1 minute. Remove glove compartment. Disconnect passenger-side air bag module connector. Is there cracking or chipping in passenger-side air bag module connector?	Yes	Replace wiring harness.
2		No	Go to next step.
3	VERIFY WHETHER MALFUNCTION IS IN PASSENGER-SIDE AIR BAG MODULE (INFLATOR NO. 1) OR RELATED WIRING HARNESS Connect leads of SST (Fuel and thermometer checker) or apply 2-ohm resistor to passenger-side air bag module (inflator No. 1) terminal A and B, and passenger-side air bag module (inflator No. 2) terminal A and B. Set resistance of SST (Fuel and thermometer checker) to 2 ohms. Connect negative battery cable. Turn ignition switch to ON position. Check the following PID/DATA monitor, using SST (WDS or equivalent). (See PID/DATA MONITOR TABLE .) OD_PAB1_ST Is related wiring harness normal?	Yes	Replace passenger-side air bag module. (See PASSENGER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION .)
3		No	Replace wiring harness, then go to next step.
4	INSPECT SAS CONTROL MODULE Turn ignition switch to LOCK position. Disconnect negative battery cable and wait for more than 1 minute. Connect passenger-side air bag module connector. Are any one or all of the following DTCs displayed? B1913 B1925 B1933 B1935	Yes	Present malfunction diagnosis: Replace SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION .) Past malfunction diagnosis: Troubleshooting completed.
4		No	Troubleshooting completed.