| DTC Code | DTC Name |
|---|---|
| B1627/82 | Lost communication with Side Airbag Sensor LH |
| B1628/82 | Side Airbag Sensor Assembly LH Initialization Incomplete |
| B1637/82 | Lost Communication with Rear Airbag Sensor LH |
| B1638/82 | Rear Airbag Sensor Assembly LH Initialization Incomplete |
| B1647/82 | Lost Communication with Side Satellite Sensor Bus LH |
DESCRIPTION
The side collision sensor LH circuit (to determine deployment of the front seat airbag assembly LH, curtain shield airbag assembly LH, front seat outer belt assembly LH and rear seat outer belt assembly LH*) is composed of the airbag sensor assembly, side airbag sensor assembly LH and No. 2 side airbag sensor assembly LH.
The side airbag sensor assembly LH and No. 2 side airbag sensor assembly LH detect impacts to the vehicle and send signals to the airbag sensor assembly to determine if the airbag should be deployed.
These DTCs are stored when a malfunction is detected in the side collision sensor LH circuit.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B1627/82 B1628/82 B1637/82 B1638/82 B1647/82 |
|
|
*: w/ Rear Pretensioner
WIRING DIAGRAM
CAUTION / NOTICE / HINT
Note
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Click here.
PROCEDURE
CHECK CURRENT DTC
Turn the power switch on (IG), and wait for at least 60 seconds.
Check for current DTCs Click here.
| Result | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Tech Tips
DTCs indicating communication errors will be changed to DTCs indicating errors in initialization by turning the power switch off and then on (IG) again.
Codes other than current DTCs B1627, B1628, B1637, B1638, B1647 and 82 may be output at this time, but they are not related to this check.
| B |
|
CHECK CONNECTORS Click here |
| C |
|
CHECK CONNECTORS Click here |
| D |
|
CHECK SIDE AIRBAG SENSOR ASSEMBLY LH Click here |
| E |
|
USE SIMULATION METHOD TO CHECK Click here |
| A |
|
CHECK HISTORY DTC
Turn the power switch on (IG), and wait for at least 60 seconds.
Check for history DTCs Click here.
| Result | ||||||
|---|---|---|---|---|---|---|
|
Tech Tips
Codes other than history DTC B1627 may be output at this time, but they are not related to this check.
| B |
|
CHECK SIDE AIRBAG SENSOR ASSEMBLY LH Click here |
| A |
|
CHECK CONNECTORS
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
Check that the connectors are properly connected to the airbag sensor assembly, side airbag sensor assembly LH and No. 2 side airbag sensor assembly LH.
| OK |
|---|
| The connectors are properly connected. |
Tech Tips
If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.
Disconnect the connectors from the airbag sensor assembly, side airbag sensor assembly LH and No. 2 side airbag sensor assembly LH.
Check that the terminals of the connectors are not damaged.
| OK |
|---|
| The terminals are not deformed or damaged. |
| NG |
|
REPLACE FLOOR WIRE |
| OK |
|
CHECK FLOOR WIRE (OPEN)
w/o Rear Pretensioner
Using SST, connect terminals 8 (BBL+) and 15 (BBL-) of connector B.
Note
Do not forcibly insert SST into the terminals of the connector when connecting.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
Disconnect SST from connector B.
| *1 | Side Airbag Sensor Assembly LH | *2 | Airbag Sensor Assembly |
| *3 | Floor Wire | *4 | Connector B |
| *5 | Connector C | - | - |
| *a | Front view of wire harness connector (to Airbag Sensor Assembly) |
*b | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
w/ Rear Pretensioner
Using SST, connect terminals 24 (BBL+) and 23 (BBL-) of connector B.
Note
Do not forcibly insert SST into the terminals of the connector when connecting.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
Disconnect SST from connector B.
| *1 | Side Airbag Sensor Assembly LH | *2 | Airbag Sensor Assembly |
| *3 | Floor Wire | *4 | Connector B |
| *5 | Connector C | - | - |
| *a | Front view of wire harness connector (to Airbag Sensor Assembly) |
*b | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
| NG |
|
REPLACE FLOOR WIRE |
| OK |
|
CHECK FLOOR WIRE (SHORT)
| *1 | Side Airbag Sensor Assembly LH |
| *2 | Airbag Sensor Assembly |
| *3 | Floor Wire |
| *4 | Connector C |
| *a | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
w/o Rear Pretensioner
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
| *1 | Side Airbag Sensor Assembly LH |
| *2 | Airbag Sensor Assembly |
| *3 | Floor Wire |
| *4 | Connector C |
| *a | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
w/ Rear Pretensioner
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
| NG |
|
REPLACE FLOOR WIRE |
| OK |
|
CHECK FLOOR WIRE (SHORT TO B+)
| *1 | Side Airbag Sensor Assembly LH |
| *2 | Airbag Sensor Assembly |
| *3 | Floor Wire |
| *4 | Connector C |
| *a | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
w/o Rear Pretensioner
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG).
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| *1 | Side Airbag Sensor Assembly LH |
| *2 | Airbag Sensor Assembly |
| *3 | Floor Wire |
| *4 | Connector C |
| *a | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
w/ Rear Pretensioner
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG).
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPLACE FLOOR WIRE |
| OK |
|
CHECK FLOOR WIRE (SHORT TO GROUND)
| *1 | Side Airbag Sensor Assembly LH |
| *2 | Airbag Sensor Assembly |
| *3 | Floor Wire |
| *4 | Connector C |
| *a | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
w/o Rear Pretensioner
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| *1 | Side Airbag Sensor Assembly LH |
| *2 | Airbag Sensor Assembly |
| *3 | Floor Wire |
| *4 | Connector C |
| *a | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
w/ Rear Pretensioner
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPLACE FLOOR WIRE |
| OK |
|
CHECK FLOOR WIRE (OPEN)
Using SST, connect terminals 2 (BCL+) and 1 (BCL-) of connector C.
Note
Do not forcibly insert SST into the terminals of the connector when connecting.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
Disconnect SST from connector C.
| *1 | No. 2 Side Airbag Sensor Assembly LH | *2 | Side Airbag Sensor Assembly LH |
| *3 | Floor Wire | *4 | Connector B |
| *5 | Connector C | - | - |
| *a | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
*b | Front view of wire harness connector (to No. 2 Side Airbag Sensor Assembly LH) |
| NG |
|
REPLACE FLOOR WIRE |
| OK |
|
CHECK FLOOR WIRE (SHORT)
| *1 | No. 2 Side Airbag Sensor Assembly LH |
| *2 | Side Airbag Sensor Assembly LH |
| *3 | Floor Wire |
| *4 | Connector B |
| *a | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
| NG |
|
REPLACE FLOOR WIRE |
| OK |
|
CHECK FLOOR WIRE (SHORT TO B+)
| *1 | No. 2 Side Airbag Sensor Assembly LH |
| *2 | Side Airbag Sensor Assembly LH |
| *3 | Floor Wire |
| *4 | Connector B |
| *a | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG).
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPLACE FLOOR WIRE |
| OK |
|
CHECK FLOOR WIRE (SHORT TO GROUND)
| *1 | No. 2 Side Airbag Sensor Assembly LH |
| *2 | Side Airbag Sensor Assembly LH |
| *3 | Floor Wire |
| *4 | Connector B |
| *a | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPLACE FLOOR WIRE |
| OK |
|
CHECK SIDE AIRBAG SENSOR ASSEMBLY LH
| *A | w/o Rear Pretensioner |
| *B | w/ Rear Pretensioner |
| *1 | Side Airbag Sensor Assembly RH |
| *2 | Airbag Sensor Assembly |
Connect the connectors to the No. 2 side airbag sensor assembly LH and airbag sensor assembly.
Interchange the side airbag sensor assembly LH with RH and connect the connectors.
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG), and wait for at least 60 seconds.
Clear the DTCs stored in memory Click here.
Turn the power switch off.
Turn the power switch on (IG), and wait for at least 60 seconds.
Check for DTCs Click here.
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
Tech Tips
Codes other than DTCs B1623, B1628, B1642, B1647, 81 and 82 may be output at this time, but they are not related to this check.
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
Return the side airbag sensor assembly LH and RH to their original positions and connect the connectors.
| B |
|
REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH Click here |
| C |
|
USE SIMULATION METHOD TO CHECK Click here |
| A |
|
CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH
| *1 | No. 2 Side Airbag Sensor Assembly RH |
| *2 | Side Airbag Sensor Assembly LH |
Interchange the No. 2 side airbag sensor assembly LH with RH and connect the connectors.
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG), and wait for at least 60 seconds.
Clear the DTCs stored in memory Click here.
Turn the power switch off.
Turn the power switch on (IG), and wait for at least 60 seconds.
Check for DTCs Click here.
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
Tech Tips
Codes other than DTCs B1623, B1628, B1642, B1647, 81 and 82 may be output at this time, but they are not related to this check.
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
Return the No. 2 side airbag sensor assembly LH and RH to their original positions and connect the connectors.
| A |
|
USE SIMULATION METHOD TO CHECK Click here |
| B |
|
REPLACE AIRBAG SENSOR ASSEMBLY Click here |
| C |
|
REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH Click here |
CHECK CONNECTORS
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
Check that the connectors are properly connected to the side airbag sensor assembly LH and No. 2 side airbag sensor assembly LH.
| OK |
|---|
| The connectors are properly connected. |
Tech Tips
If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.
Disconnect the connectors from the side airbag sensor assembly LH and No. 2 side airbag sensor assembly LH.
Check that the terminals of the connectors are not damaged.
| OK |
|---|
| The terminals are not deformed or damaged. |
| NG |
|
REPLACE FLOOR WIRE |
| OK |
|
CHECK FLOOR WIRE (OPEN)
Using SST, connect terminals 2 (BCL+) and 1 (BCL-) of connector C.
Note
Do not forcibly insert SST into the terminals of the connector when connecting.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
Disconnect SST from connector C.
| *1 | No. 2 Side Airbag Sensor Assembly LH | *2 | Side Airbag Sensor Assembly LH |
| *3 | Floor Wire | *4 | Connector B |
| *5 | Connector C | - | - |
| *a | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
*b | Front view of wire harness connector (to No. 2 Side Airbag Sensor Assembly LH) |
| NG |
|
REPLACE FLOOR WIRE |
| OK |
|
CHECK FLOOR WIRE (SHORT)
| *1 | No. 2 Side Airbag Sensor Assembly LH |
| *2 | Side Airbag Sensor Assembly LH |
| *3 | Floor Wire |
| *4 | Connector B |
| *a | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
| NG |
|
REPLACE FLOOR WIRE |
| OK |
|
CHECK FLOOR WIRE (SHORT TO B+)
| *1 | No. 2 Side Airbag Sensor Assembly LH |
| *2 | Side Airbag Sensor Assembly LH |
| *3 | Floor Wire |
| *4 | Connector B |
| *a | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG).
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPLACE FLOOR WIRE |
| OK |
|
CHECK FLOOR WIRE (SHORT TO GROUND)
| *1 | No. 2 Side Airbag Sensor Assembly LH |
| *2 | Side Airbag Sensor Assembly LH |
| *3 | Floor Wire |
| *4 | Connector B |
| *a | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPLACE FLOOR WIRE |
| OK |
|
CHECK SIDE AIRBAG SENSOR ASSEMBLY LH
| *A | w/o Rear Pretensioner |
| *B | w/ Rear Pretensioner |
| *1 | Side Airbag Sensor Assembly RH |
| *2 | Airbag Sensor Assembly |
Connect the connector to the No. 2 side airbag sensor assembly LH.
Interchange the side airbag sensor assembly LH with RH and connect the connectors.
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG), and wait for at least 60 seconds.
Clear the DTCs stored in memory Click here.
Turn the power switch off.
Turn the power switch on (IG), and wait for at least 60 seconds.
Check for DTCs Click here.
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
Tech Tips
Codes other than DTCs B1632, B1633, B1637 and B1638 may be output at this time, but they are not related to this check.
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
Return the side airbag sensor assembly LH and RH to their original positions and connect the connectors.
| B |
|
REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH Click here |
| C |
|
USE SIMULATION METHOD TO CHECK Click here |
| A |
|
CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH
| *1 | No. 2 Side Airbag Sensor Assembly RH |
| *2 | Side Airbag Sensor Assembly LH |
Interchange the No. 2 side airbag sensor assembly LH with RH and connect the connectors.
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG), and wait for at least 60 seconds.
Clear the DTCs stored in memory Click here.
Turn the power switch off.
Turn the power switch on (IG), and wait for at least 60 seconds.
Check for DTCs Click here.
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
Tech Tips
Codes other than DTCs B1632, B1633, B1637 and B1638 may be output at this time, but they are not related to this check.
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
Return the No. 2 side airbag sensor assembly LH and RH to their original positions and connect the connectors.
| A |
|
USE SIMULATION METHOD TO CHECK Click here |
| B |
|
REPLACE AIRBAG SENSOR ASSEMBLY Click here |
| C |
|
REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH Click here |
CHECK SIDE AIRBAG SENSOR ASSEMBLY LH
| *A | w/o Rear Pretensioner |
| *B | w/ Rear Pretensioner |
| *1 | Side Airbag Sensor Assembly RH |
| *2 | Airbag Sensor Assembly |
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
Interchange the side airbag sensor assembly LH with RH and connect the connectors.
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG), and wait for at least 60 seconds.
Clear the DTCs stored in memory Click here.
Turn the power switch off.
Turn the power switch on (IG), and wait for at least 60 seconds.
Check for DTCs Click here.
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
Tech Tips
Codes other than DTCs B1622 and B1627 may be output at this time, but they are not related to this check.
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
Return the side airbag sensor assembly LH and RH to their original positions and connect the connectors.
| A |
|
USE SIMULATION METHOD TO CHECK Click here |
| B |
|
REPLACE AIRBAG SENSOR ASSEMBLY Click here |
| C |
|
REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH Click here |