B1633

SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B1632/81, B1633/81, B1642/81, B1692/81, B1693/81: Lost Communication with Rear Airbag Sensor RH
B1693/81 - Door Side Airbag Sensor RH Initialization Incomplete

DESCRIPTION

The side collision sensor RH circuit (to determine deployment of the front seat side airbag assembly RH and curtain shield airbag assembly RH) is composed of the center airbag sensor assembly, rear airbag sensor RH and side airbag sensor RH.

The rear airbag sensor RH and side airbag sensor RH detect impacts to the vehicle and send signals to the center airbag sensor assembly to determine if the airbag should be deployed.

These DTCs are stored when a malfunction is detected in the circuit for the side collision sensor RH (to determine deployment of the front seat side airbag assembly RH and curtain shield airbag assembly RH).





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK CURRENT DTC

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

(b) Check the current DTCs Reading and Clearing Diagnostic Trouble Codes.

Result:





HINT
* DTCs indicating communication errors will be changed to DTCs indicating errors in initialization by turning the ignition switch off and then to ON again.
* Codes other than current DTCs B1632, B1633, B1642, B1692, B1693 and 81 may be output at this time, but they are not related to this check.

E -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

D -- CHECK REAR AIRBAG SENSOR RH

C -- CHECK CONNECTORS

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

2. CHECK HISTORY DTC

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

(b) Check the history DTCs Reading and Clearing Diagnostic Trouble Codes.

Result:





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

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

3. CHECK CONNECTORS

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

(c) Check that the connectors are properly connected to the center airbag sensor assembly, rear airbag sensor RH and side airbag sensor RH. Also check that the connectors that link the No. 2 floor wire and front door wire RH are properly connected.

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 center airbag sensor assembly, rear airbag sensor RH and side airbag sensor RH. Also disconnect the connectors that link the No. 2 floor wire and front door wire RH.

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

OK:

The terminals are not deformed or damaged.

NG -- REPLACE WIRE HARNESS
OK -- Continue to next step.

4. CHECK NO. 2 FLOOR WIRE (OPEN)

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





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

SST : 09843-18040

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

Standard Resistance:





Text in Illustration





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

5. CHECK NO. 2 FLOOR WIRE (SHORT)

(a) Disconnect SST from connector B.





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

Standard Resistance:





Text in Illustration





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

6. 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:





Text in Illustration





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

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

(a) Turn the ignition switch off.





(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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

Standard Resistance:





Text in Illustration





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

8. CHECK WIRE HARNESS (OPEN)

(a) Connect the connectors that link the No. 2 floor wire and front door wire RH.





(b) Using SST, connect terminals 2 (BCR+) and 1 (BCR-) of connector E.

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

SST : 09843-18040

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

Standard Resistance:





Text in Illustration





NG -- CHECK FRONT DOOR WIRE RH (OPEN)
OK -- Continue to next step.

9. CHECK WIRE HARNESS (SHORT)

(a) Disconnect SST from connector E.





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

Standard Resistance:





Text in Illustration





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

10. CHECK WIRE HARNESS (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:





Text in Illustration





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

11. CHECK WIRE HARNESS (SHORT TO GROUND)

(a) Turn the ignition switch off.





(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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

Standard Resistance:





Text in Illustration





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

12. CHECK REAR AIRBAG SENSOR RH

(a) Turn the ignition switch off.





(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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

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

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

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

(g) Turn the ignition switch off.

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

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

Result:





Text in Illustration





HINT
Codes other than DTCs B1633, B1642 or 81 and B1638, B1647 or 82 may be output at this time, but they are not related to this check.

C -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

B -- REPLACE REAR AIRBAG SENSOR RH Removal
A -- Continue to next step.

13. CHECK SIDE AIRBAG SENSOR RH

(a) Turn the ignition switch off.





(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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

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

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

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

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

(h) Turn the ignition switch off.

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

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

Result:





Text in Illustration





HINT
Codes other than DTC B1633, B1642 or 81 and B1638, B1647 or 82 may be output at this time, but they are not related to this check.

C -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal

B -- REPLACE SIDE AIRBAG SENSOR RH Removal

A -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

14. CHECK CONNECTORS

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

(c) Check that the connectors are properly connected to the rear airbag sensor RH and side airbag sensor RH. Also check that the connectors that link the No. 2 floor wire and front door wire RH are properly connected.

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 rear airbag sensor RH and side airbag sensor RH. Also disconnect the connectors that link the No. 2 floor wire and front door wire RH.

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

OK:

The terminals are not deformed or damaged.

NG -- REPLACE WIRE HARNESS
OK -- Continue to next step.

15. CHECK WIRE HARNESS (OPEN)

(a) Connect the connectors that link the No. 2 floor wire and front door wire RH.





(b) Using SST, connect terminals 2 (BCR+) and 1 (BCR-) of connector E.

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

SST : 09843-18040

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

Standard Resistance:





Text in Illustration





NG -- CHECK FRONT DOOR WIRE RH (OPEN)
OK -- Continue to next step.

16. CHECK WIRE HARNESS (SHORT)

(a) Disconnect SST from connector E.





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

Standard Resistance:





Text in Illustration





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

17. CHECK WIRE HARNESS (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:





Text in Illustration





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

18. CHECK WIRE HARNESS (SHORT TO GROUND)

(a) Turn the ignition switch off.





(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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

Standard Resistance:





Text in Illustration





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

19. CHECK SIDE AIRBAG SENSOR RH

(a) Turn the ignition switch off.





(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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

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

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

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

(g) Turn the ignition switch off.

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

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

Result:





Text in Illustration





HINT
Codes other than DTCs B1692, B1693, B1697 and B1698 may be output at this time, but they are not related to this check.

C -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

B -- REPLACE SIDE AIRBAG SENSOR RH Removal
A -- Continue to next step.

20. CHECK REAR AIRBAG SENSOR RH

(a) Turn the ignition switch off.





(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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

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

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

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

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

(h) Turn the ignition switch off.

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

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

Result:





Text in Illustration





HINT
Codes other than DTCs B1692, B1693, B1697 and B1698 may be output at this time, but they are not related to this check.

C -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal

B -- REPLACE REAR AIRBAG SENSOR RH Removal

A -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

21. CHECK REAR AIRBAG SENSOR RH

(a) Turn the ignition switch off.





(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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

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

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

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

(g) Turn the ignition switch off.

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

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

Result:





Text in Illustration





HINT
Codes other than DTCs B1632 and B1637 may be output at this time, but they are not related to this check.

C -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal

B -- REPLACE REAR AIRBAG SENSOR RH Removal

A -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

22. CHECK FRONT DOOR WIRE RH (OPEN)

(a) Disconnect the front door wire RH connector from the No. 2 floor wire.





HINT
SST has already been inserted into connector E.

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

Standard Resistance:





Text in Illustration





NG -- REPLACE FRONT DOOR WIRE RH

OK -- REPLACE NO. 2 FLOOR WIRE

23. CHECK FRONT DOOR WIRE RH (SHORT)

(a) Disconnect the front door wire RH connector from the No. 2 floor wire.





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

Standard Resistance:





Text in Illustration





NG -- REPLACE FRONT DOOR WIRE RH

OK -- REPLACE NO. 2 FLOOR WIRE

24. CHECK FRONT DOOR WIRE RH (SHORT TO B+)

(a) Turn the ignition switch off.





(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

(c) Disconnect the front door wire RH connector from the No. 2 floor wire.

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

(e) Turn the ignition switch to ON.

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

Standard Voltage:





Text in Illustration





NG -- REPLACE FRONT DOOR WIRE RH

OK -- REPLACE NO. 2 FLOOR WIRE

25. CHECK FRONT DOOR WIRE RH (SHORT TO GROUND)

(a) Disconnect the front door wire RH connector from the No. 2 floor wire.





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

Standard Resistance:





Text in Illustration





NG -- REPLACE FRONT DOOR WIRE RH

OK -- REPLACE NO. 2 FLOOR WIRE