Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

DTC 19 - DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	INSPECT WIRING HARNESS BETWEEN BATTERY AND PASSENGER AIR BAG DEACTIVATION SWITCH Disconnect negative battery cable. Remove center panel. Connect negative battery cable. Measure voltage at terminal A of passenger air bag deactivation switch connector. Is voltage more than 9 V?	Yes	Go to next step.
1		No	Replace wiring harness.
2	INSPECT PASSENGER AIR BAG DEACTIVATION SWITCH Inspect passenger air bag deactivation switch. (See PASSENGER AIR BAG DEACTIVATION (PAD) SWITCH INSPECTION ) Is switch okay?	Yes	Go to next step.
2		No	Replace passenger-side air bag cut-off switch. (See PASSENGER AIR BAG DEACTIVATION (PAD) SWITCH REMOVAL/INSTALLATION )
3	INSPECT WIRING HARNESS BETWEEN PASSENGER AIR BAG DEACTIVATION SWITCH AND SAS CM WARNING: Handling air bag system components improperly can accidentally deploy air bag modules and pre-tensioner seat belt, which may seriously injure you. Read AIR BAG SYSTEM SERVICE WARNINGS before handling air bag system components. (See AIR BAG SYSTEM SERVICE WARNINGS ) Turn ignition switch to LOCK position. Disconnect negative battery cable and wait for more than 1 minute. Remove driver- and passenger-side quarter trim. Disconnect driver- and passenger-side pre-tensioner seat belt connectors. Remove dashboard. (See DASHBOARD REMOVAL/INSTALLATION ) Disconnect SAS CM connector. Measure voltage at terminal V of SAS control module connector? Is voltage more than 9 V?	Yes	Go to next step.
3		No	Replace wiring harness.
4	Is there continuity between terminal G of SAS CM and ground?	Yes	Replace SAS CM. (See SAS CONTROL MODULE REMOVAL/INSTALLATION )
4		No	Replace wiring harness.