DTC Fa Satellite Sensor Bus Communication Error: Wiring Diagram

WARNING: This page is about a different car, the 2012 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Satellite Sensor Bus Communication Error - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE CHART

Step	Check	Yes	No
1 CHECK POOR CONTACT OF CONNECTORS. Check for poor contact of the connectors (AB17, AB41) between the airbag control module and the satellite safing sensor.	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 SATELLITE SAFING SENSOR). Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for 60 seconds or more. Disconnect the connectors (AB21, AB26) from seat belt pretensioner. Disconnect the connectors (AB31, AB33) from curtain airbag module. Disconnect connectors (AB19) and (AB24) from the side airbag module. Disconnect the connectors (AB17, AB6, AB18) from airbag control module. Connect the connector (1AG) in the test harness AG to the connectors (AB17, AB6, AB18). Disconnect the connector (AB41) from the satellite safing sensor and connect to the test harness H connector (1H). Measure the resistance between connectors (5AG) and (4AG) in the test harness AG and connector (3H) in the test harness H. Connector & terminal (5AG) No. 9 - (3H) No. 5: (6AG) No. 13 - (3H) No. 6:	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 SATELLITE SAFING SENSOR). Measure the resistance between connector (5AG) in the test harness AG and chassis ground, and the resistance between connector (5AG) terminals in the test harness AG. Connector & terminal (5AG) No. 9 - Chassis ground: (6AG) No. 13 - Chassis ground: (5AG) No. 9 - (6AG) No. 13:	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?	Replace the satellite safing sensor. < Ref. to REMOVAL , Satellite Safing Sensor. > Replace the airbag control module if not operating normally even after replacing the sensor. < Ref. to REMOVAL , Airbag Control Module. >	Go to step 5 .
5 CHECK FOR ANY OTHER DTC ON DISPLAY.	Is any other DTC displayed?	Check DTC using "List of Diagnostic Trouble Code (DTC)". < Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . >	Finish the diagnosis.