B1655

SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1655/37: Seat Belt Buckle Switch RH Circuit Malfunction

DTC B1655/37 - Seat Belt Buckle Switch RH Circuit Malfunction

DESCRIPTION

The seat belt buckle switch RH circuit consists of the center airbag sensor and the front seat inner belt RH.
DTC B1655/37 is recorded when a malfunction is detected in the seat belt buckle switch RH circuit.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC




(a) Turn the ignition switch ON, and wait for at least 60 seconds.
(b) Clear the DTCs stored in memory Reading and Clearing Diagnostic Trouble Codes.
(c) Turn the ignition switch OFF.
(d) Turn the ignition switch ON, and wait for at least 60 seconds.
(e) Check the DTCs Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC B1655/37 is not output.
HINT: Codes other than DTC B1655/37 may be output at this time, but they are not related to this check.

OK -- USE SIMULATION METHOD TO CHECK
NG -- Continue to next step.
2. CHECK CONNECTION OF CONNECTOR
(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 and the front seat inner belt RH.
OK:
The connectors are connected.
NG -- CONNECT CONNECTORS
OK -- Continue to next step.
3. CHECK FLOOR WIRE (OPEN)




(a) Disconnect the connectors from the center airbag sensor and the front seat inner belt RH.
(b) Using a service wire, connect terminals A22-15 (RBE+) and A22-23 (RBE-) of connector "B".
NOTE:
Do not forcibly insert a service wire into the terminals of the connector when connecting.
(c) Measure the resistance of the wire harness side connector.
Standard resistance:






NG -- REPAIR OR REPLACE FLOOR WIRE
OK -- Continue to next step.
4. CHECK FLOOR WIRE (SHORT)




(a) Disconnect the service wire from connector "B".
(b) Measure the resistance of the wire harness side connector.
Standard resistance:






NG -- REPAIR OR REPLACE FLOOR WIRE
OK -- Continue to next step.
5. CHECK FLOOR WIRE (SHORT TO B+)




(a) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(b) Turn the ignition switch ON.
(c) Measure the voltage of the wire harness side connector.
Standard voltage:






NG -- REPAIR OR REPLACE FLOOR WIRE
OK -- Continue to next step.
6. CHECK FLOOR WIRE (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 of the wire harness side connector.
Standard resistance:






NG -- REPAIR OR REPLACE FLOOR WIRE
OK -- Continue to next step.
7. CHECK FRONT SEAT INNER BELT ASSEMBLY RH




(a) Connect the connector to the center airbag sensor and the front seat inner belt RH.
(b) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(c) Turn the ignition switch ON, and wait for at least 60 seconds.
(d) Clear the DTCs stored in memory Reading and Clearing Diagnostic Trouble Codes.
(e) Turn the ignition switch OFF.
(f) Turn the ignition switch ON, and wait for at least 60 seconds.
(g) Check the DTCs Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC B1655/37 is not output.
HINT: Codes other than DTC B1655/37 may be output at this time, but they are not related to this check.

OK -- USE SIMULATION METHOD TO CHECK
NG -- Continue to next step.
8. REPLACE FRONT SEAT INNER BELT ASSEMBLY RH
(a) Turn the ignition switch OFF.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Temporarily replace the front seat inner belt RH with a new or normal functioning one Removal.
NEXT -- Continue to next step.
9. CHECK CENTER AIRBAG SENSOR ASSEMBLY




(a) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(b) Turn the ignition switch ON, and wait for at least 60 seconds.
(c) Check the DTCs stored in memory Reading and Clearing Diagnostic Trouble Codes.
(d) Turn the ignition switch OFF.
(e) Turn the ignition switch ON, and wait for at least 60 seconds.
(f) Check the DTCs Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC B1655/37 is not output.
HINT: Codes other than DTC B1655/37 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