Part 2

SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B1622, B1623, B1632, B1633, B1642, B1692, B1693; Side Airbag Sensor RH Lost Communication; 2013 MY FR-S [03/2012 -]
B1622 - Side Airbag Sensor RH Lost Communication
B1623 - Side Airbag Sensor RH Initialization
B1632 - Side No. 2 Airbag Sensor RH Lost Communication
B1633 - Side No. 2 Airbag Sensor RH Initialization
B1642 - Side Satellite Sensor Bus Lost Communication (RH)
B1692 - Lost Communication with Side Airbag Sensor RH
B1693 - Side Airbag Sensor RH Initialization Incomplete
(continued)

13. CHECK SIDE AIRBAG SENSOR RH CIRCUIT (SHORT TO B+)

(a) Connect the cable to the negative (-) battery terminal.

(b) Turn the ignition switch to ON.

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

(d) Turn the ignition switch off.

(e) Disconnect the cable from the negative (-) battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

NG -- CHECK FRONT DOOR WIRE RH (SHORT TO B+)
OK -- Continue to next step.

14. CHECK SIDE AIRBAG SENSOR RH CIRCUIT (SHORT TO GROUND)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

NG -- CHECK FRONT DOOR WIRE RH (SHORT TO GROUND)
OK -- Continue to next step.

15. CHECK SIDE NO. 2 AIRBAG SENSOR ASSEMBLY RH

(a) Connect the connectors to the rear airbag sensor RH, side airbag sensor assembly RH and airbag ECU assembly.

(b) Interchange the side No. 2 airbag sensor assembly RH with LH and connect the connectors.

(c) Connect the cable to the negative (-) battery terminal.

(d) Clear the DTCs stored in memory Reading and Clearing Diagnostic Trouble Codes.

(e) Turn the ignition switch off.

(f) Turn the ignition switch to ON, and wait for at least 60 seconds.

(g) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

Result:

HINT
Codes other than DTCs B1642 and B1647 may be output at this time, but they are not related to this check.

(h) Turn the ignition switch off.

(i) Disconnect the cable from the negative (-) battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(j) Return the side No. 2 airbag sensor assembly RH and LH to their original positions and connect the connectors.

B -- REPLACE SIDE NO. 2 AIRBAG SENSOR ASSEMBLY RH Removal

C -- USE SIMULATION METHOD TO CHECK
A -- Continue to next step.

16. CHECK REAR AIRBAG SENSOR RH

(a) Interchange the rear airbag sensor RH with LH and connect the connectors to them.

(b) Connect the cable to the negative (-) battery terminal.

(c) Clear the DTCs stored in memory Reading and Clearing Diagnostic Trouble Codes.

(d) Turn the ignition switch off.

(e) Turn the ignition switch to ON, and wait for at least 60 seconds.

(f) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

Result:

HINT
Codes other than DTCs B1642 and B1647 may be output at this time, but they are not related to this check.

(g) Turn the ignition switch off.

(h) Disconnect the cable from the negative (-) battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(i) Return the rear airbag sensor RH and LH to their original positions and connect the connectors.

B -- REPLACE REAR AIRBAG SENSOR RH Removal

C -- USE SIMULATION METHOD TO CHECK
A -- Continue to next step.

17. CHECK SIDE AIRBAG SENSOR ASSEMBLY RH

(a) Interchange the side airbag sensor assembly RH with LH and connect the connectors.

HINT
Codes other than DTCs B1642 and B1647 may be output at this time, but they are not related to this check.

(g) Turn the ignition switch off.

(h) Disconnect the cable from the negative (-) battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(i) Return the side airbag sensor assembly RH and LH to their original positions and connect the connectors.

B -- REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH Removal

C -- USE SIMULATION METHOD TO CHECK

A -- REPLACE AIRBAG ECU ASSEMBLY Removal

18. CHECK HISTORY DTC

(a) Check for history DTCs Reading and Clearing Diagnostic Trouble Codes.

Result:

HINT
Codes other than history DTCs B1622 and B1632 may be output at this time, but they are not related to this check.

B -- CHECK SIDE NO. 2 AIRBAG SENSOR ASSEMBLY RH

C -- CHECK REAR AIRBAG SENSOR RH
A -- Continue to next step.

19. CHECK CURRENT DTC

(a) Check for current DTCs Reading and Clearing Diagnostic Trouble Codes.

Result:

HINT
Codes other than current DTCs B1623 and B1633 may be output at this time, but they are not related to this check.

B -- CHECK CONNECTORS
A -- Continue to next step.

20. CHECK CONNECTORS

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(c) Check that the connectors are properly connected to the airbag ECU assembly and side No. 2 airbag sensor assembly RH.

OK:

The connectors are properly connected.

HINT
If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

(d) Disconnect the connectors from the airbag ECU assembly and side No. 2 airbag sensor assembly RH.

(e) Check that the terminals of the connectors are not damaged.

OK:

The terminals are not deformed or damaged.

NG -- REPLACE NO. 2 FLOOR WIRE
OK -- Continue to next step.

21. CHECK NO. 2 FLOOR WIRE (OPEN)

(a) Using a service wire, connect terminals 8 (BBR+) and 11 (BBR-) of connector B.

NOTICE:
Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

(c) Disconnect the service wire from connector B.

NG -- REPLACE NO. 2 FLOOR WIRE
OK -- Continue to next step.

22. CHECK NO. 2 FLOOR WIRE (SHORT)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

NG -- REPLACE NO. 2 FLOOR WIRE
OK -- Continue to next step.

23. CHECK NO. 2 FLOOR WIRE (SHORT TO B+)

(a) Connect the cable to the negative (-) battery terminal.

(b) Turn the ignition switch to ON.

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

(d) Turn the ignition switch off.

(e) Disconnect the cable from the negative (-) battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

NG -- REPLACE NO. 2 FLOOR WIRE
OK -- Continue to next step.

24. CHECK NO. 2 FLOOR WIRE (SHORT TO GROUND)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

NG -- REPLACE NO. 2 FLOOR WIRE
OK -- Continue to next step.