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Subaru Legacy Service Manual: Dtc b16ec curtain airbag sensor rh initialization error

Subaru Legacy Service Manual / Airbag system (diagnostics) / Diagnostic chart with trouble code / Dtc b16ec curtain airbag sensor rh initialization error

DIAGNOSIS START CONDITION:

Ignition voltage is 10 V to 16 V.

DTC DETECTING CONDITION:

Curtain airbag sensor RH initialization error

WIRING DIAGRAM:

NOTE:

For the coupling connector, refer to “WIRING SYSTEM”.

Airbag system Airbag System > WIRING DIAGRAM

STEPCHECKYESNO

1.CHECK DTC.

Read the DTC. (Current malfunction) Read Diagnostic Trouble Code (DTC)

Is DTC B1622 displayed-

Perform the diagnosis according to DTC.

Diagnostic Chart with Trouble Code > DTC B16EC CURTAIN AIRBAG SENSOR RH INITIALIZATION ERROR

2.CHECK POOR CONTACT OF CONNECTORS.

Check for poor contact of the connectors between the airbag control module and the front door impact sensor RH.

Is there poor contact-

Replace the airbag rear harness and the door harness.

Diagnostic Chart with Trouble Code > DTC B16EC CURTAIN AIRBAG SENSOR RH INITIALIZATION ERROR

3.CHECK AIRBAG REAR HARNESS (BETWEEN SIDE AIRBAG SENSOR RH AND CURTAIN AIRBAG SENSOR RH) (OPEN CIRCUIT).

1) Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for 60 seconds or more.

2) Disconnect the connector (AB26) from seat belt pretensioner RH.

3) Disconnect the connector (AB22) from seat cushion airbag module RH.

4) Disconnect the connector (AB33) from curtain airbag module RH.

5) Disconnect the connector (AB24) from side airbag module RH.

6) Disconnect the connector (AB28) from side airbag sensor RH.

7) Connect the connector (AB28) of side airbag sensor RH and the connector (1AI) in test harness AI.

8) Connect the connector (2AI) in the test harness AI and the connector (1V) in the test harness V.

9) Disconnect the connector (AB34) from curtain airbag sensor (RH), and connect the connector (2V) in test harness V to connector (AB34).

10) Measure the resistance between connector (3V) terminals in the test harness V.

Connector & terminal

(3V) No. 2 — (3V) No. 6:

(3V) No. 1 — (3V) No. 7:

Is the resistance less than 10 --

Diagnostic Chart with Trouble Code > DTC B16EC CURTAIN AIRBAG SENSOR RH INITIALIZATION ERROR

Replace the airbag rear harness along with body harness.

4.CHECK AIRBAG REAR HARNESS (BETWEEN SIDE AIRBAG SENSOR AND CURTAIN AIRBAG SENSOR RH) (SHORTED TO GROUND AND SHORTED BETWEEN LINES).

Measure the resistance between connector (3V) in test harness V and chassis ground, and the resistance between connector (3V) in test harness V.

Connector & terminal

(3V) No. 2 — Chassis ground:

(3V) No. 1 — Chassis ground:

(3V) No. 2 — (3V) No. 1:

Is the resistance 1 M- or more-

Diagnostic Chart with Trouble Code > DTC B16EC CURTAIN AIRBAG SENSOR RH INITIALIZATION ERROR

Replace the airbag rear harness along with body harness.

5.CHECK AIRBAG CONTROL MODULE.

1) Connect all connectors.

2) Clear the memory. Clear Memory Mode

3) Perform the Inspection Mode. Inspection Mode

4) Read the DTC. (Current malfunction) Read Diagnostic Trouble Code (DTC)

Is DTC B16EC displayed-

Diagnostic Chart with Trouble Code > DTC B16EC CURTAIN AIRBAG SENSOR RH INITIALIZATION ERROR

Diagnostic Chart with Trouble Code > DTC B16EC CURTAIN AIRBAG SENSOR RH INITIALIZATION ERROR

6.CHECK CURTAIN AIRBAG SENSOR RH.

1) Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for 60 seconds or more.

2) Replace the curtain airbag sensor RH by the curtain airbag sensor LH. Curtain Airbag Sensor > REMOVAL

3) Connect all connectors.

4) Clear the memory. Clear Memory Mode

5) Perform the Inspection Mode. Inspection Mode

6) Read the DTC. (Current malfunction) Read Diagnostic Trouble Code (DTC)

Is DTC B16EC displayed-

Diagnostic Chart with Trouble Code > DTC B16EC CURTAIN AIRBAG SENSOR RH INITIALIZATION ERROR

Replace the curtain airbag sensor RH. Curtain Airbag Sensor > REMOVAL

7.CHECK AIRBAG CONTROL MODULE.

1) Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for 60 seconds or more.

2) Restore the curtain airbag sensors RH and LH back to their original position. Curtain Airbag Sensor > REMOVAL

3) Connect all connectors.

4) Clear the memory. Clear Memory Mode

5) Perform the Inspection Mode. Inspection Mode

6) Read the DTC. (Current malfunction) Read Diagnostic Trouble Code (DTC)

Is DTC B16EC displayed-

Replace the airbag control module. Airbag Control Module > REMOVAL

Diagnostic Chart with Trouble Code > DTC B16EC CURTAIN AIRBAG SENSOR RH INITIALIZATION ERROR

8.CHECK FOR ANY OTHER DTC ON DISPLAY.

Read the DTC. (Current malfunction) Read Diagnostic Trouble Code (DTC)

Is any other DTC displayed-

Check DTC using “List of Diagnostic Trouble Code”. List of Diagnostic Trouble Code (DTC) > LIST

Finish the diagnosis.

Dtc b16ed curtain airbag sensor lh initialization error
DIAGNOSIS START CONDITION:Ignition voltage is 10 V to 16 V.DTC DETECTING CONDITION:Curtain airbag sensor LH initialization errorWIRING DIAGRAM:NOTE:For the coupling connector, refer to “WIRING S ...

Dtc b16eb side airbag sensor lh initialization error
DIAGNOSIS START CONDITION:Ignition voltage is 10 V to 16 V.DTC DETECTING CONDITION:Side airbag sensor LH initialization errorWIRING DIAGRAM:NOTE:For the coupling connector, refer to “WIRING SYST ...

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Caution
• Prior to starting work, pay special attention to the following:1. Always wear work clothes, a work cap, and protective shoes. Additionally, wear a helmet, protective goggles, etc. if necessary.2. Protect the vehicle using a seat cover, fender cover, etc.3. Prepare the service tools, clean cl ...

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