B1623
SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1622/81,B1623/81,B1632/81,B1633/81,B1642/81,B1643/81: Lost Communication with Driver Side - Side Airbag Sensor Assembly
DTC B1622/81 - Lost Communication with Driver Side - Side Airbag Sensor Assembly
DTC B1623/81 - Driver Side - Side Airbag Sensor Assembly Initialization Incomplete
DTC B1632/81 - Lost Communication with Driver Side Rear Airbag Sensor
DTC B1633/81 - Driver Side Rear Airbag Sensor Initialization Incomplete
DTC B1642/81 - Lost Communication with Driver Side Satellite Sensor Bus
DTC B1643/81 - Driver Side Satellite Sensor Bus Initialization Incomplete
DESCRIPTION
The driver side - side collision sensor 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, side airbag sensor LH, and rear airbag sensor LH.
The side airbag sensor LH and rear 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.
Theses DTCs are recorded when a malfunction is detected for the driver side - side collision sensor 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 PRESENT DTC
(a) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(b) Check for present DTCs DTC Check / Clear.
Result:
HINT:
- DTCs indicating communication errors will be changed to DTCs indicating errors in initialization by turning the ignition switch off and then on (IG) again.
- Codes other than present DTC B1622, B1623, B1632, B1633, B1642, B1643, and 81 may be output at this time, but they are not related to this check.
E -- USE SIMULATION METHOD TO CHECK
D -- CHECK SIDE AIRBAG SENSOR LH
C -- CHECK CONNECTORS
B -- CHECK CONNECTORS
A -- Continue to next step.
2. CHECK PAST DTC
(a) Check for past DTCs DTC Check / Clear.
Result:
HINT: Codes other than past DTC B1622 and B1632 may be output at this time, but they are not related to this check.
C -- CHECK SIDE AIRBAG SENSOR LH
B -- CHECK CONNECTORS
A -- Continue to next step.
3. CHECK CONNECTORS
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, 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 the side airbag sensor LH.
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.
(e) Check that the terminals of connectors are not damaged.
OK:
The terminals are not deformed or damaged.
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
4. CHECK FLOOR WIRE NO. 2 (OPEN)
(a) Using SST, connect terminals 24 (BBD+) and 23 (BBD-) of connector B.
NOTE: 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:
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
5. CHECK FLOOR WIRE NO. 2 (SHORT)
(a) Disconnect SST from connector B.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
6. CHECK FLOOR WIRE NO. 2 (SHORT TO B+)
(a) Connect the negative (-) terminal cable to the battery.
(b) Turn the ignition switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
7. CHECK FLOOR WIRE NO. 2 (SHORT TO GROUND)
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
8. CHECK FLOOR WIRE NO. 2 (OPEN)
(a) 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.
SST: 09843-18040
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
9. CHECK FLOOR WIRE NO. 2 (SHORT)
(a) Disconnect SST from connector C.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
10. CHECK FLOOR WIRE NO. 2 (SHORT TO B+)
(a) Connect the negative (-) terminal cable to the battery.
(b) Turn the ignition switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
11. CHECK FLOOR WIRE NO. 2 (SHORT TO GROUND)
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
12. CHECK SIDE AIRBAG SENSOR LH
(a) Connect the connectors to the rear airbag sensor LH and center airbag sensor assembly.
(b) Interchange the side airbag sensor RH with LH and connect the connectors to them.
(c) Connect the negative (-) terminal cable to the battery.
(d) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(e) Clear the DTCs stored in the the memory DTC Check / Clear.
(f) Turn the ignition switch off.
(g) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(h) Check for DTCs DTC Check / Clear.
Result:
HINT: Codes other than DTC B1623, B1642, B1643, or 81 and B1628, B1647, B1648, or 82 may be output at this time, but they are not related to this check.
C -- USE SIMULATION METHOD TO CHECK
B -- REPLACE SIDE AIRBAG SENSOR LH
A -- Continue to next step.
13. CHECK REAR AIRBAG SENSOR LH
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Return the side airbag sensor RH and LH to their original positions and connect the connectors to them.
(d) Interchange the rear airbag sensor RH with LH and connect the connectors to them.
(e) Connect the negative (-) terminal cable to the battery.
(f) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(g) Clear the DTCs stored in the memory DTC Check / Clear.
(h) Turn the ignition switch off.
(i) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(j) Check for DTCs DTC Check / Clear.
Result:
HINT: Codes other than DTC B1623, B1642, B1643, or 81 and B1628, B1647, B1648, or 82 may be output at this time, but they are not related to this check.
C -- REPLACE REAR AIRBAG SENSOR LH
B -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
A -- USE SIMULATION METHOD TO CHECK
14. CHECK CONNECTORS
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Check that the connectors are properly connected to the side airbag sensor LH and rear airbag sensor LH.
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 side airbag sensor LH and rear airbag sensor LH.
(e) Check that the terminals of connectors are not damaged.
OK:
The terminals are not deformed or damaged.
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
15. CHECK FLOOR WIRE NO. 2 (OPEN)
(a) 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.
SST: 09843-18040
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
16. CHECK FLOOR WIRE NO. 2 (SHORT)
(a) Disconnect SST from connector C.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
17. CHECK FLOOR WIRE NO. 2 (SHORT TO B+)
(a) Connect the negative (-) terminal cable to the battery.
(b) Turn the ignition switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
18. CHECK FLOOR WIRE NO. 2 (SHORT TO GROUND)
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
19. CHECK SIDE AIRBAG SENSOR LH
(a) Connect the connector to the rear airbag sensor LH.
(b) Interchange the side airbag sensor RH with LH and connect the connectors to them.
(c) Connect the negative (-) terminal cable to the battery.
(d) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(e) Clear the DTCs stored in the the memory DTC Check / Clear.
(f) Turn the ignition switch off.
(g) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(h) Check for DTCs DTC Check / Clear.
Result:
HINT: Codes other than DTC B1632, B1633, B1637 and B1638 may be output at this time, but they are not related to this check.
C -- USE SIMULATION METHOD TO CHECK
B -- REPLACE SIDE AIRBAG SENSOR LH
A -- Continue to next step.
20. CHECK REAR AIRBAG SENSOR LH
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Return the side airbag sensor RH and LH to their original positions and connect the connectors to them.
(d) Interchange the rear airbag sensor RH with LH and connect the connectors to them.
(e) Connect the negative (-) terminal cable to the battery.
(f) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(g) Clear the DTCs stored in the memory DTC Check / Clear.
(h) Turn the ignition switch off.
(i) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(j) Check for DTCs DTC Check / Clear.
Result:
HINT: Codes other than DTC B1632, B1633, B1637, and B1638 may be output at this time, but they are not related to this check.
C -- REPLACE REAR AIRBAG SENSOR LH
B -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
A -- USE SIMULATION METHOD TO CHECK
21. CHECK SIDE AIRBAG SENSOR LH
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Interchange the side airbag sensor RH with LH and connect the connectors to them.
(d) Connect the negative (-) terminal cable to the battery.
(e) Turn the ignition switch on (IG), 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 on (IG), and wait for at least 60 seconds.
(i) Check for DTCs DTC Check / Clear.
Result:
HINT: Codes other than DTC B1622 and B1627 may be output at this time, but they are not related to this check.
C -- REPLACE SIDE AIRBAG SENSOR LH
B -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
A -- USE SIMULATION METHOD TO CHECK