CE:DTC EC Side Sensor Bus RH Communication Error

NOTE: Be sure to properly identify the Airbag system type prior to performing any diagnostics.

DTC DETECTING CONDITION:

Open or short circuit in harness of side sensor bus (RH).
Side airbag sensor (RH) is faulty.
Airbag control module is faulty.

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Refer to CAUTION , General Description.

WIRING DIAGRAM:

Type A

Fig 1: Side Sensor Bus (RH) - Wiring Diagram (Type A)
Courtesy of SUBARU OF AMERICA, INC.
Type B

Fig 2: Side Sensor Bus (RH) - Wiring Diagram (Type B)
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 and the door 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 type B (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 Type A & Type B (OUTBACK model) (5AG) No. 8 - (3V) No. 2: (5AG) No. 10 - (3V) No. 1: Type B (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 connector (3V) in test harness V and chassis ground, and the resistance between connector (3V) terminals in test harness V. Connector & terminal (3V) No. 2 - Chassis ground: (3V) No. 1 - 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.	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 REMOVAL, Side Airbag Sensor. Connect all connectors. Clear the memory. Perform the Inspection Mode. Read the DTC.	Is the same DTC displayed?	Replace the airbag control module. Refer to REMOVAL REMOVAL, Airbag Control Module.	Go to step 6 .
6 CHECK FOR ANY OTHER DTC ON DISPLAY. Read the DTC.	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.