B1628

SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1627/82: Lost Communication with Front Passenger Side - Side Airbag Sensor Assembly

DTC B1627/82 - Lost Communication with Front Passenger Side - Side Airbag Sensor Assembly

DTC B1628/82 - Front Passenger Side - Side Airbag Sensor Assembly Initialization Incomplete

DTC B1637/82 - Lost Communication with Passenger Side Rear Airbag Sensor

DTC B1638/82 - Passenger Side Rear Airbag Sensor Initialization Incomplete

DTC B1647/82 - Lost Communication with Front Passenger Side Satellite Sensor Bus

DTC B1648/82 - Front Passenger Side Satellite Sensor Bus Initialization Incomplete

DESCRIPTION

The circuit for the side collision sensor RH (to determine deployment of the front seat side airbag assembly RH and curtain shield airbag assembly RH) is composed of the center airbag sensor assembly, side airbag sensor RH, and rear airbag sensor RH.
The side airbag sensor RH and rear airbag sensor RH detect impacts to the vehicle and send signals to the center airbag sensor assembly to determine if the airbag should be deployed.
These DTCs are recorded when a malfunction is detected in the circuit for the side collision sensor RH.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC
(a) Turn the engine switch on (IG), and wait for at least 60 seconds.
(b) Clear the DTCs stored in the memory DTC Check / Clear.
(c) Turn the engine switch off.
(d) Turn the engine switch on (IG), and wait for at least 60 seconds.
(e) Check the DTCs DTC Check / Clear.
Result:

HINT:
- DTCs indicating communication errors will be changed to DTCs indicating errors in initialization by turning the engine switch off and then on (IG) again.
- Codes other than DTC B1627, B1628, B1637, B1638, B1647, B1648, and 82 may be output at this time, but they are not related to this check.

C -- USE SIMULATION METHOD TO CHECK
B -- CHECK CONNECTION OF CONNECTORS
A -- Continue to next step.
2. CHECK PAST DTC
(a) Check the past DTCs DTC Check / Clear.
Result:

HINT: Codes other than past DTC B1627 may be output at this time, but they are not related to this check.

B -- CHECK CONNECTION OF CONNECTORS
A -- Continue to next step.
3. CHECK CONNECTION OF CONNECTORS
(a) Turn the engine 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 and the side airbag sensor RH.
OK:
The connectors are properly connected.
NG -- CONNECT CONNECTORS PROPERLY
OK -- Continue to next step.
4. CHECK CONNECTORS
(a) Disconnect the connectors from the center airbag sensor assembly and side airbag sensor RH.
(b) Check that the connectors (on the center airbag sensor assembly side and side airbag sensor RH side) are not damaged.
OK:
The connectors are not deformed or damaged.
NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
5. CHECK FLOOR WIRE NO. 2 (OPEN)

(a) with Rear side airbag:
Using a service wire, connect terminals 17 (BBP+) and 18 (BBP-) of connector B.
NOTE:
Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.

(b) without Rear side airbag:
Using a service wire, connect terminals 8 (BBP+) and 11 (BBP-) of connector B.
NOTE:
Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
6. CHECK FLOOR WIRE NO. 2 (SHORT)

(a) Disconnect the service wire from connector B.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
7. CHECK FLOOR WIRE NO. 2 (SHORT TO B+)

(a) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(b) Turn the engine switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:

NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
8. CHECK FLOOR WIRE NO. 2 (SHORT TO GROUND)

(a) Turn the engine 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 -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
9. CHECK SIDE AIRBAG SENSOR RH

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

(a) 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.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
13. CHECK FLOOR WIRE NO. 2 (SHORT)

(a) Disconnect the service wire from connector C.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
14. CHECK FLOOR WIRE NO. 2 (SHORT TO B+)

NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
15. CHECK FLOOR WIRE NO. 2 (SHORT TO GROUND)

NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
16. CHECK REAR AIRBAG SENSOR RH

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

HINT: Codes other than DTC B1623, B1632, B1633, B1642, B1643, or 81 and DTC B1628, B1637, B1638, 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 REAR AIRBAG SENSOR RH
A -- Continue to next step.
17. CHECK CENTER AIRBAG SENSOR ASSEMBLY
(a) Turn the engine switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Return the rear airbag sensor LH and RH to their original positions and connect the connectors to them.
(d) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(e) Turn the engine switch on (IG), and wait for at least 60 seconds.
(f) Clear the DTCs stored in the memory DTC Check / Clear.
(g) Turn the engine switch off.
(h) Turn the engine switch on (IG), and wait for at least 60 seconds.
(i) Check the DTCs DTC Check / Clear.
OK:
DTC B1628, B1637, B1638, B1647, B1648 or 82 is not output.
HINT: Codes other than DTC B1628, B1637, B1638, B1647, B1648 and 82 may be output at this time, but they are not related to this check.

NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
OK -- USE SIMULATION METHOD TO CHECK
18. CHECK CONNECTION OF CONNECTORS
(a) Turn the engine 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 and the side airbag sensor RH.
OK:
The connectors are properly connected.
NG -- CONNECT CONNECTORS PROPERLY
OK -- Continue to next step.
19. CHECK CONNECTORS
(a) Disconnect the connectors from the center airbag sensor assembly and side airbag sensor RH.
(b) Check that the connectors (on the center airbag sensor assembly side and side airbag sensor RH side) are not damaged.
OK:
The connectors are not deformed or damaged.
NG -- CONNECT CONNECTORS PROPERLY
OK -- Continue to next step.
20. CHECK FLOOR WIRE NO. 2 (OPEN)

NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
21. CHECK FLOOR WIRE NO. 2 (SHORT)

(a) Disconnect the service wire from connector B.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
22. CHECK FLOOR WIRE NO. 2 (SHORT TO B+)

NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
23. CHECK FLOOR WIRE NO. 2 (SHORT TO GROUND)

NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
24. CHECK SIDE AIRBAG SENSOR RH

HINT: Codes other than DTC B1622 and B1627 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 RH
A -- Continue to next step.
25. CHECK CENTER AIRBAG SENSOR ASSEMBLY
(a) Turn the engine switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Return the side airbag sensor LH and RH to their original positions and connect the connectors to them.
(d) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(e) Turn the engine switch on (IG), and wait for at least 60 seconds.
(f) Clear the DTCs stored in the memory DTC Check / Clear.
(g) Turn the engine switch off.
(h) Turn the engine switch on (IG), and wait for at least 60 seconds.
(i) Check the DTCs DTC Check / Clear.
OK:
DTC B1627 is not output.
HINT: Codes other than DTC B1627 may be output at this time, but they are not related to this check.

NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
OK -- USE SIMULATION METHOD TO CHECK