AIRBAG SYSTEM(w/o Occupant Classification System), Diagnostic DTC:B1630/23,B1632/81,B1635/24 and B1637/82

DTC Code	DTC Name
B1630/23	Rear Airbag Sensor RH Circuit Malfunction
B1632/81	Lost Communication with Rear Airbag Sensor RH
B1635/24	Rear Airbag Sensor LH Circuit Malfunction
B1637/82	Lost Communication with Rear Airbag Sensor LH

DESCRIPTION

The rear airbag sensor LH or RH consists of a lateral deceleration sensor, etc.

If the airbag sensor assembly receives signals from the lateral deceleration sensor, it determines whether the SRS should be activated.

DTC B1630/23, B1632/81, B1635/24 or B1637/82 is stored when a malfunction is detected in the rear airbag sensor LH or RH circuit.


DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B1630/23	Rear Airbag Sensor RH Circuit Malfunction	Either condition is met: A rear airbag sensor RH malfunction. A airbag sensor assembly malfunction.	Rear airbag sensor RH Airbag sensor assembly
B1632/81	Lost Communication with Rear Airbag Sensor RH	Either condition is met: A rear airbag sensor RH malfunction. A airbag sensor assembly malfunction.	Rear airbag sensor RH Airbag sensor assembly
B1635/24	Rear Airbag Sensor LH Circuit Malfunction	Either condition is met: A rear airbag sensor LH malfunction. A airbag sensor assembly malfunction.	Rear airbag sensor LH Airbag sensor assembly
B1637/82	Lost Communication with Rear Airbag Sensor LH	Either condition is met: A rear airbag sensor LH malfunction. A airbag sensor assembly malfunction.	Rear airbag sensor LH Airbag sensor assembly

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 Click here Click here 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.
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After replacing the airbag sensor assembly, refer to initialization.
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PROCEDURE

CHECK DTC

Turn the power switch to on (IG).
Clear the DTCs stored in memory.
Click here

Body Electrical > SRS Airbag > Clear DTCs
Turn the power switch off.
Turn the power switch to on (IG), and wait for at least 60 seconds.

Check for DTCs.

Click here

Body Electrical > SRS Airbag > Trouble Codes

Result


Proceed to
DTC B1635/24 or B1637/82 is output
DTC B1630/23 or B1632/81 is output
DTC B1630/23, B1632/81, B1635/24 and B1637/82 are not output

Tip:

Codes other than DTC B1630/23, B1632/81, B1635/24 and B1637/82 may be output at this time, but they are not related to this check.

DTC B1630/23 or B1632/81 is output

CHECK REAR AIRBAG SENSOR RHClick here

DTC B1630/23, B1632/81, B1635/24 and B1637/82 are not output

USE SIMULATION METHOD TO CHECK

Click here

DTC B1635/24 or B1637/82 is output

CHECK REAR AIRBAG SENSOR LH

*1	Rear Airbag Sensor RH
*2	Airbag Sensor Assembly

Turn the power switch off.

Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds.
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 to on (IG), and wait for at least 60 seconds.
Clear the DTCs stored in memory.
Click here

Body Electrical > SRS Airbag > Clear DTCs
Turn the power switch off.
Turn the power switch to on (IG), and wait for at least 60 seconds.

Check for DTCs.

Click here

Body Electrical > SRS Airbag > Trouble Codes

Result


Proceed to
DTC B1630/23 or B1632/81 is output
DTC B1635/24 or B1637/82 is output
DTC B1630/23, B1632/81, B1635/24 and B1637/82 are not output

Tip:

Codes other than DTC B1630/23, B1632/81, B1635/24 and B1637/82 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.

DTC B1630/23 or B1632/81 is output

REPLACE REAR AIRBAG SENSOR LH

Click here

DTC B1635/24 or B1637/82 is output

REPLACE AIR BAG SENSOR ASSEMBLY

Click here

DTC B1630/23, B1632/81, B1635/24 and B1637/82 are not output

USE SIMULATION METHOD TO CHECK

Click here

CHECK REAR AIRBAG SENSOR RH

*1	Rear Airbag Sensor LH
*2	Airbag Sensor Assembly

Turn the power switch off.

Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds.
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 to on (IG), and wait for at least 60 seconds.
Clear the DTCs stored in memory.
Click here

Body Electrical > SRS Airbag > Clear DTCs
Turn the power switch off.
Turn the power switch to on (IG), and wait for at least 60 seconds.

Check for DTCs.

Click here

Body Electrical > SRS Airbag > Trouble Codes

Result


Proceed to
DTC B1635/24 or B1637/82 is output
DTC B1630/23 or B1632/81 is output
DTC B1630/23, B1632/81, B1635/24 and B1637/82 are not output

Tip:

Codes other than DTC B1630/23, B1632/81, B1635/24 and B1637/82 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.

DTC B1635/24 or B1637/82 is output

REPLACE REAR AIRBAG SENSOR RH

Click here

DTC B1630/23 or B1632/81 is output

REPLACE AIR BAG SENSOR ASSEMBLY

Click here

DTC B1630/23, B1632/81, B1635/24 and B1637/82 are not output

USE SIMULATION METHOD TO CHECK

Click here