DTC Code | DTC Name |
---|---|
B1623/81 | Side Airbag Sensor Assembly RH Initialization Incomplete |
B1628/82 | Side Airbag Sensor Assembly LH Initialization Incomplete |
DESCRIPTION
The circuit for the side collision sensor LH or RH (to determine deployment of the front seat airbag LH or RH, rear seat airbag LH or RH, front seat belt pretensioner LH or RH, rear seat belt pretensioner LH or RH and curtain shield airbag LH or RH) is composed of the center airbag sensor assembly, rear airbag sensor LH or RH and side airbag sensor assembly LH or RH.
The rear airbag sensor LH or RH and side airbag sensor assembly LH or RH detect impacts to the vehicle and send signals to the center airbag sensor assembly to determine if the airbag should be deployed.
DTC B1623/81 or B1628/82 is stored when a malfunction is detected in the circuit for the side collision sensor LH or RH (to determine deployment of the front seat airbag LH or RH, rear seat airbag LH or RH, front seat belt pretensioner LH or RH, rear seat belt pretensioner LH or RH and curtain shield airbag LH or RH).
DTC Code | DTC Detection Condition | Trouble Area |
---|---|---|
B1623/81 | One of the following conditions is met:
|
|
B1628/82 | One of the following conditions is met:
|
|
WIRING DIAGRAM
INSPECTION PROCEDURE
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.
When disconnecting the cable from the negative (-) auxiliary battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected Click here.
PROCEDURE
CHECK PAST DTC
Turn the power switch on (IG), and wait for at least 60 seconds.
Check for DTCs Click here.
Result | Proceed to |
---|---|
DTC B1622/81 is output | A |
DTC B1627/82 is output | B |
DTC B1622/81 and B1627/82 are not output | C |
A |
GO TO DTC B1622/81 Click here |
B |
GO TO DTC B1627/82 Click here |
C |
CHECK FOR DTC
Turn the power switch on (IG).
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 | Proceed to |
---|---|
DTC B1623/81 and B1628/82 are not output | A |
DTC B1628/82 is output | B |
DTC B1623/81 is output | C |
Tech Tips
Codes other than DTC B1623/81 and B1628/82 may be output at this time, but they are not related to this check.
A |
USE SIMULATION METHOD TO CHECK Click here |
B |
CHECK CONNECTION OF CONNECTORS Click here |
C |
CHECK CONNECTION OF CONNECTORS
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds.
Check that the connectors are properly connected to the center airbag sensor assembly, rear airbag sensor RH and side airbag sensor assembly RH.
OK |
---|
The connectors are properly connected. |
NG |
CONNECT CONNECTORS PROPERLY |
OK |
CHECK CONNECTORS
Disconnect the connectors from the center airbag sensor assembly, rear airbag sensor RH and side airbag sensor assembly RH.
*1 | Rear Airbag Sensor RH |
*2 | Side Airbag Sensor Assembly RH |
*3 | Center Airbag Sensor Assembly |
*4 | Floor Wire |
Check that the connectors (on the center airbag sensor assembly side, rear airbag sensor RH side and side airbag sensor assembly RH side) are not damaged.
OK |
---|
The connectors are not deformed or damaged. |
NG |
REPLACE FLOOR WIRE |
OK |
CHECK SIDE AIRBAG SENSOR ASSEMBLY RH CIRCUIT
Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
*1 | Side Airbag Sensor Assembly RH | *2 | Rear Airbag Sensor RH |
*3 | Floor Wire | *4 | Connector C |
*5 | Connector B | *6 | Service Wire |
*a | Front view of wire harness connector (to Side Airbag Sensor Assembly RH) |
*b | Front view of wire harness connector (to Rear Airbag Sensor RH) |
Turn the power switch on (IG).
Measure the voltage according to the value(s) in the table below.
Standard Voltage | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds.
Using a service wire, connect terminals 2 (BBR+) and 1 (BBR-) of connector C.
Note
Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Disconnect the service wire from connector C.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NG |
REPLACE FLOOR WIRE |
OK |
CHECK REAR AIRBAG SENSOR RH
*1 | Rear Airbag Sensor LH |
*2 | Center Airbag Sensor Assembly |
Connect the connectors to the center airbag sensor assembly and side airbag sensor assembly RH.
Interchange the rear airbag sensor RH with LH and connect the connectors to them.
Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
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 | Proceed to |
---|---|
DTC B1623/81 and B1628/82 are not output | A |
DTC B1628/82 is output | B |
DTC B1623/81 is output | C |
Tech Tips
Codes other than DTC B1623/81 and B1628/82 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, and wait for at least 90 seconds.
Return the rear airbag sensor LH and RH to their original positions and connect the connectors to them.
A |
USE SIMULATION METHOD TO CHECK Click here |
B |
REPLACE REAR AIRBAG SENSOR RH Click here |
C |
CHECK SIDE AIRBAG SENSOR ASSEMBLY RH
*1 | Side Airbag Sensor Assembly LH |
*2 | Rear Airbag Sensor RH |
Interchange the side airbag sensor assembly RH with LH and connect the connectors to them.
Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
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 | Proceed to |
---|---|
DTC B1623/81 and B1628/82 are not output | A |
DTC B1628/82 is output | B |
DTC B1623/81 is output | C |
Tech Tips
Codes other than DTC B1623/81 and B1628/82 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, and wait for at least 90 seconds.
Return the side airbag sensor assembly LH and RH to their original positions and connect the connectors to them.
A |
USE SIMULATION METHOD TO CHECK Click here |
B |
REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH Click here |
C |
REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here
CHECK CONNECTION OF CONNECTORS
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds.
Check that the connectors are properly connected to the center airbag sensor assembly, rear airbag sensor LH and side airbag sensor assembly LH.
OK |
---|
The connectors are properly connected. |
NG |
CONNECT CONNECTORS PROPERLY |
OK |
CHECK CONNECTORS
Disconnect the connectors from the center airbag sensor assembly, rear airbag sensor LH and side airbag sensor assembly LH.
*1 | Rear Airbag Sensor LH |
*2 | Side Airbag Sensor Assembly LH |
*3 | Center Airbag Sensor Assembly |
*4 | No. 2 Floor Wire |
Check that the connectors (on the center airbag sensor assembly side, rear airbag sensor LH side and side airbag sensor assembly LH side) are not damaged.
OK |
---|
The connectors are not deformed or damaged. |
NG |
REPLACE NO. 2 FLOOR WIRE |
OK |
CHECK SIDE AIRBAG SENSOR ASSEMBLY LH CIRCUIT
Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
*1 | Side Airbag Sensor Assembly LH | *2 | Rear Airbag Sensor LH |
*3 | No. 2 Floor Wire | *4 | Connector C |
*5 | Connector B | *6 | Service Wire |
*a | Front view of wire harness connector (to Side Airbag Sensor Assembly LH) |
*b | Front view of wire harness connector (to Rear Airbag Sensor LH) |
Turn the power switch on (IG).
Measure the voltage according to the value(s) in the table below.
Standard Voltage | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds.
Using a service wire, connect terminals 2 (BBL+) and 1 (BBL-) of connector C.
Note
Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Disconnect the service wire from connector C.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NG |
REPLACE NO. 2 FLOOR WIRE |
OK |
CHECK REAR AIRBAG SENSOR LH
*1 | Rear Airbag Sensor RH |
*2 | Center Airbag Sensor Assembly |
Connect the connectors to the center airbag sensor assembly and side airbag sensor assembly LH.
Interchange the rear airbag sensor LH with RH and connect the connectors to them.
Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
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 | Proceed to |
---|---|
DTC B1623/81 and B1628/82 are not output | A |
DTC B1623/81 is output | B |
DTC B1628/82 is output | C |
Tech Tips
Codes other than DTC B1623/81 and B1628/82 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, and wait for at least 90 seconds.
Return the rear airbag sensor RH and LH to their original positions and connect the connectors to them.
A |
USE SIMULATION METHOD TO CHECK Click here |
B |
REPLACE REAR AIRBAG SENSOR LH Click here |
C |
CHECK SIDE AIRBAG SENSOR ASSEMBLY LH
*1 | Side Airbag Sensor Assembly RH |
*2 | Rear Airbag Sensor LH |
Interchange the side airbag sensor assembly LH with RH and connect the connectors to them.
Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
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 | Proceed to |
---|---|
DTC B1623/81 and B1628/82 are not output | A |
DTC B1623/81 is output | B |
DTC B1628/82 is output | C |
Tech Tips
Codes other than DTC B1623/81 and B1628/82 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, and wait for at least 90 seconds.
Return the side airbag sensor assembly RH and LH to their original positions and connect the connectors to them.
A |
USE SIMULATION METHOD TO CHECK Click here |
B |
REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH Click here |
C |
REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here