B1698
SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B1637/82, B1638/82, B1647/82, B1697/82, B1698/82: Lost Communication with Rear Airbag Sensor LH
B1698/82 - Door Side Airbag Sensor LH Initialization Incomplete
DESCRIPTION
The side collision sensor LH circuit (to determine deployment of the front seat side airbag assembly LH and curtain shield airbag assembly LH) is composed of the center airbag sensor assembly, rear airbag sensor LH and side airbag sensor LH.
The rear airbag sensor LH and side airbag sensor LH 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 for the side collision sensor LH circuit (to determine deployment of the front seat side airbag assembly LH and curtain shield airbag assembly LH).
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 for 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 B1637, B1638, B1647, B1697, B1698 and 82 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 LH
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 for history DTCs Reading and Clearing Diagnostic Trouble Codes.
Result:
HINT
Codes other than history DTC B1637 may be output at this time, but they are not related to this check.
B -- CHECK REAR AIRBAG SENSOR LH
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 LH and side airbag sensor LH. Also check that the connectors that link the floor wire and front door wire LH 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 LH and side airbag sensor LH. Also disconnect the connectors that link the floor wire and front door wire LH.
(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 FLOOR WIRE (OPEN)
(a) Using SST, connect terminals 8 (BBL+) and 15 (BBL-) 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 FLOOR WIRE
OK -- Continue to next step.
5. CHECK 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 FLOOR WIRE
OK -- Continue to next step.
6. CHECK 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 FLOOR WIRE
OK -- Continue to next step.
7. CHECK 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 FLOOR WIRE
OK -- Continue to next step.
8. CHECK WIRE HARNESS (OPEN)
(a) Connect the connectors that link the floor wire and front door wire LH.
(b) Using SST, connect terminals 2 (BCL+) and 1 (BCL-) 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 LH (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 LH (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 LH (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 LH (SHORT TO GROUND)
OK -- Continue to next step.
12. CHECK REAR AIRBAG SENSOR LH
(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 RH with LH 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 LH Removal
A -- Continue to next step.
13. CHECK SIDE AIRBAG SENSOR LH
(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 RH and LH to their original positions and connect the connectors.
(d) Interchange the side airbag sensor RH with LH 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 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 -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal
B -- REPLACE SIDE AIRBAG SENSOR LH 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 LH and side airbag sensor LH. Also check that the connectors that link the floor wire and front door wire LH 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 LH and side airbag sensor LH. Also disconnect the connectors that link the floor wire and front door wire LH.
(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 floor wire and front door wire LH.
(b) Using SST, connect terminals 2 (BCL+) and 1 (BCL-) 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 LH (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 LH (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 LH (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 LH (SHORT TO GROUND)
OK -- Continue to next step.
19. CHECK SIDE AIRBAG SENSOR LH
(a) Connect the connectors to the rear airbag sensor LH.
(b) Interchange the side airbag sensor RH with LH and connect the connectors.
(c) Connect the cable to the negative (-) battery terminal.
(d) Turn the ignition switch to ON, and wait for at least 60 seconds.
(e) Clear the DTCs stored in memory Reading and Clearing Diagnostic Trouble Codes.
(f) Turn the ignition switch off.
(g) Turn the ignition switch to ON, and wait for at least 60 seconds.
(h) 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 LH Removal
A -- Continue to next step.
20. CHECK REAR AIRBAG SENSOR LH
(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 RH and LH to their original positions and connect the connectors.
(d) Interchange the rear airbag sensor RH with LH 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 LH Removal
A -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting
21. CHECK REAR AIRBAG SENSOR LH
(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 RH with LH 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 LH Removal
A -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting
22. CHECK FRONT DOOR WIRE LH (OPEN)
(a) Disconnect the front door wire LH connector from the 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 LH
OK -- REPLACE FLOOR WIRE
23. CHECK FRONT DOOR WIRE LH (SHORT)
(a) Disconnect the front door wire LH connector from the 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 LH
OK -- REPLACE FLOOR WIRE
24. CHECK FRONT DOOR WIRE LH (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 LH connector from the 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 LH
OK -- REPLACE FLOOR WIRE
25. CHECK FRONT DOOR WIRE LH (SHORT TO GROUND)
(a) Disconnect the front door wire LH connector from the 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 LH
OK -- REPLACE FLOOR WIRE