DTC B1623 Side Airbag Sensor RH Initialization Error: Wiring Diagram

See appropriate SYSTEM WIRING DIAGRAM article.

Fig 1: Airbag System - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

Step	Check	Yes	No
1 CHECK POOR CONTACT OF CONNECTORS. Check for poor contact of the connectors between the airbag control module and the side airbag sensor (RH).	Is there poor contact?	Replace the airbag rear harness along with body harness.	Go to step 2 .
2 CHECK AIRBAG REAR HARNESS (BETWEEN AIRBAG CONTROL MODULE AND SIDE AIRBAG SENSOR RH). Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for 60 seconds or more. Disconnect the connector (AB26) from seat belt pretensioner (RH). Disconnect the connector (AB33) from curtain airbag module (RH). Disconnect connector (AB24) of the side airbag module (RH). Disconnect the connectors (AB6, AB17, AB18) from airbag control module. Connect the connector (1AG) in the test harness AG to the connectors (AB6, AB17, AB18). NOTE: For sedan models, connect test harness AH between the connectors (AB6, AB17, AB18) and (1AG). Disconnect the connector (AB28) from side airbag sensor (RH), and connect the connector (2V) in test harness V to connector (AB28). Measure the resistance between connector (5AG) in the test harness AG and connector (3V) in the test harness V. Connector & terminal OUTBACK model (5AG) No. 8 - (3V) No. 2: (5AG) No. 10 - (3V) No. 1: Sedan model (5AG) No. 9 - (3V) No. 2: (5AG) No. 10 - (3V) No. 1:	Is the resistance less than 10 Ω?	Go to step 3 .	Replace the airbag rear harness along with body harness.
3 CHECK AIRBAG REAR HARNESS (BETWEEN AIRBAG CONTROL MODULE AND SIDE AIRBAG SENSOR RH). Measure the resistance between test harness AG connectors (5AG) and chassis ground, and the resistance between connectors (5AG) of the test harness AG. Connector & terminal (3V) No. 1 - Chassis ground: (3V) No. 2 - Chassis ground: (3V) No. 1 - (3V) No. 2:	Is the resistance 1 MΩ or more?	Go to step 4 .	Replace the airbag rear harness along with body harness.
4 CHECK AIRBAG CONTROL MODULE. Connect all connectors. Clear the memory. Perform the Inspection Mode. Read the DTC. (Current malfunction)	Is the same DTC displayed?	Go to step 5 .	Go to step 6 .
5 REPLACE SIDE AIRBAG SENSOR (RH) AND CHECK AIRBAG CONTROL MODULE AFTER REPLACEMENT. Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for 60 seconds or more. Replace the side airbag sensor (RH). Refer to REMOVAL . Connect all connectors. Clear the memory. Perform the Inspection Mode. Read the DTC. (Current malfunction)	Is the system normal?	Go to step 6 .	Replace the curtain airbag sensor (RH). Refer to REMOVAL . Replace the airbag control module if not operating normally even after replacing the sensor. Refer to REMOVAL .
6 CHECK FOR ANY OTHER DTC ON DISPLAY.	Is any other DTC displayed?	Check DTC using "List of Diagnostic Trouble Code (DTC)". Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .	Finish the diagnosis.