B1635

SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B1630/23: Driver Side Rear Airbag Sensor Circuit Malfunction

DTC B1630/23 - Driver Side Rear Airbag Sensor Circuit Malfunction

DTC B1635/24 - Front Passenger Side Rear Airbag Sensor Circuit Malfunction

DESCRIPTION

The rear airbag sensor LH or RH consists of the safing sensor, the diagnostic circuit, the lateral deceleration sensor, etc.
If the center airbag sensor receives signals from the lateral deceleration sensor, it determines whether the SRS should be activated.
DTC B1630/23 or B1635/24 is stored when a malfunction is detected in the rear airbag sensor LH or RH circuit.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC
(a) Turn the ignition switch off.
(b) Clear the DTCs stored in the memory DTC Check / Clear.
(c) Turn the ignition switch off.
(d) Turn the ignition switch to ON, and wait for at least 60 seconds.
(e) Check for DTCs DTC Check / Clear.

Result

C -- USE SIMULATION METHOD TO CHECK
B -- CHECK CONNECTION OF CONNECTORS
A -- Continue to next step.

2. CHECK CONNECTION OF 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 side airbag sensor RH and the rear airbag sensor RH.
OK:
The connectors are properly connected.

NG -- CONNECT CONNECTORS PROPERLY
OK -- Continue to next step.

3. CHECK CONNECTORS
(a) Disconnect the connectors from the side airbag sensor RH and rear airbag sensor RH.
(b) Check that the connectors (on the side airbag sensor RH side and the rear airbag sensor RH side) are not damaged Electronic Circuit Inspection Procedure.
OK:
The connectors are not deformed or damaged.

NG -- REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

4. CHECK REAR AIRBAG SENSOR RH CIRCUIT

(a) Connect the negative (-) terminal to the battery, and wait for at least 2 seconds.
(b) Turn the ignition switch to ON, and wait for at least 60 seconds.
(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

(d) Turn the ignition switch off.
(e) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(f) Disconnect the connectors from the side airbag sensor RH and rear airbag sensor RH.
(g) Using a service wire, connect terminals 2 (BCR+) and 1 (BCR-) of connector E.
NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.
(h) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

(i) Disconnect the service wire from the connector E.
(j) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

NG -- CHECK FRONT DOOR WIRE RH (SIDE AIRBAG SENSOR RH - NO. 2 FLOOR WIRE)
OK -- Continue to next step.

5. 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 RH with LH and connect the connectors to them.
(d) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(e) Turn the ignition switch to ON, and wait for at least 60 seconds.
(f) Clear the DTCs stored in the memory DTC Check / Clear.
(g) Turn the ignition switch off.
(h) Turn the ignition switch to ON, and wait for at least 60 seconds.
(i) Check for DTCs DTC Check / Clear.

Result:

HINT: Codes other than DTC B1630/23 and B1635/24 may be output at this time, but they are not released to this check.

(j) Turn the ignition switch off.
(k) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(l) Return the rear airbag sensor RH and LH to their original positions and connect the connectors to them.
C -- USE SIMULATION METHOD TO CHECK
B -- REPLACE REAR AIRBAG SENSOR RH
A -- Continue to next step.

6. CHECK SIDE AIRBAG SENSOR RH

(a) Interchange the side airbag sensor RH with LH and connect the connectors to them.
(b) Connect the negative (-) terminal to the battery, and wait for at least 2 seconds.
(c) Turn the ignition switch to ON, and wait for at least 60 seconds.
(d) Clear the DTCs stored in the memory DTC Check / Clear.
(e) Turn the ignition switch off.
(f) Turn the ignition switch to ON, and wait for at least 60 seconds.
(g) Check for DTCs DTC Check / Clear.

(h) Turn the ignition switch off.
(i) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(j) Return the side airbag sensor RH and LH to their original positions and connect the connectors to them.
C -- USE SIMULATION METHOD TO CHECK
B -- REPLACE SIDE AIRBAG SENSOR RH
A -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
7. CHECK FRONT DOOR WIRE RH (SIDE AIRBAG SENSOR RH - NO. 2 FLOOR WIRE)

(a) Disconnect the No. 2 floor wire connector from the door wire RH.
(b) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

(e) Turn the ignition switch off.
(f) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(g) Using a service wire, connect terminals 2 (BCR+) and 1 (BCR-) of connector C.

NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.

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

Standard Resistance:

(i) Disconnect the service wire from connector C.
(j) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

NG -- REPLACE FRONT DOOR WIRE RH
OK -- REPLACE NO. 2 FLOOR WIRE
8. CHECK CONNECTION OF 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 side airbag sensor LH and the rear airbag sensor LH.
OK:
The connectors are properly connected.

NG -- CONNECT CONNECTORS PROPERLY
OK -- Continue to next step.

9. CHECK CONNECTORS
(a) Disconnect the connectors from the side airbag sensor LH and rear airbag sensor LH.
(b) Check that the connectors (on the side airbag sensor LH side and the rear airbag sensor LH side) are not damaged Electronic Circuit Inspection Procedure.
OK:
The connectors are not deformed or damaged.

NG -- REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

10. CHECK REAR AIRBAG SENSOR LH CIRCUIT

(d) Turn the ignition switch off.
(e) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(f) Disconnect the connectors from the side airbag sensor LH and rear airbag sensor LH.
(g) Using a service wire, connect terminals 2 (BCL+) and 1 (BCL-) of connector E.

NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.

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

Standard Resistance:

(i) Disconnect the service wire from the connector E.
(j) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

NG -- CHECK FRONT DOOR WIRE LH (SIDE AIRBAG SENSOR LH - FLOOR WIRE)
OK -- Continue to next step.

11. 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 LH with RH and connect the connectors to them.
(d) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(e) Turn the ignition switch to ON, and wait for at least 60 seconds.
(f) Clear the DTCs stored in the memory DTC Check / Clear.
(g) Turn the ignition switch off.
(h) Turn the ignition switch to ON, and wait for at least 60 seconds.
(i) Check for DTCs DTC Check / Clear.

Result:

HINT: Codes other than DTC B1630/23 and B1635/24 may be output at this time, but they are not released to this check.

(j) Turn the ignition switch off.
(k) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(l) Return the rear airbag sensor LH and RH to their original positions and connect the connectors to them.
C -- USE SIMULATION METHOD TO CHECK
B -- REPLACE REAR AIRBAG SENSOR LH
A -- Continue to next step.

12. CHECK SIDE AIRBAG SENSOR LH

(a) Interchange the side airbag sensor LH with RH and connect the connectors to them.
(b) Connect the negative (-) terminal to the battery, and wait for at least 2 seconds.
(c) Turn the ignition switch to ON, and wait for at least 60 seconds.
(d) Clear the DTCs stored in the memory DTC Check / Clear.
(e) Turn the ignition switch off.
(f) Turn the ignition switch to ON, and wait for at least 60 seconds.
(g) Check for DTCs DTC Check / Clear.

(h) Turn the ignition switch off.
(i) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(j) Return the side airbag sensor LH and RH to their original positions and connect the connectors to them.
C -- USE SIMULATION METHOD TO CHECK
B -- REPLACE SIDE AIRBAG SENSOR LH
A -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
13. CHECK FRONT DOOR WIRE LH (SIDE AIRBAG SENSOR LH - FLOOR WIRE)

(a) Disconnect the floor wire connector from the door wire LH.
(b) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

(e) Turn the ignition switch off.
(f) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(g) Using a service wire, connect terminals 2 (BCL+) and 1 (BCL-) of connector C.

NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.

(h) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

(i) Disconnect the service wire from connector C.
(j) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

NG -- REPLACE FRONT DOOR WIRE LH
OK -- REPLACE FLOOR WIRE