B1655

SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1655/37: Driver Side Seat Belt Buckle Switch Circuit Malfunction
B1655/37 - Driver Side Seat Belt Buckle Switch Circuit Malfunction

DESCRIPTION

The driver side seat belt buckle switch circuit consists of the center airbag sensor assembly and the front seat inner belt assembly LH.

DTC B1655/37 is recorded when a malfunction is detected in the driver side seat belt buckle switch circuit.





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 Reading and Clearing Diagnostic Trouble Codes.

(c) Turn the engine switch off.

(d) Turn the engine switch on (IG), 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.

NG -- CHECK CONNECTION OF CONNECTORS

OK -- USE SIMULATION METHOD TO CHECK

2. 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 front seat inner belt assembly LH.

OK:

The connectors are properly connected.

NG -- CONNECT CONNECTORS, THEN GO TO STEP 1
OK -- Continue to next step.

3. CHECK FLOOR WIRE NO. 2 (OPEN)

(a) Disconnect the connectors from the center airbag sensor assembly and the front seat inner belt assembly LH.





(b) Using a service wire, connect Q32-11 (DBE+) and Q32-12 (DBE-) of connector "B".

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

(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.

4. 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.

5. 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.

6. 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.

7. CHECK FRONT SEAT INNER BELT ASSEMBLY LH

(a) Connect the connectors to the center airbag sensor assembly and the front seat inner belt assembly LH.





(b) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.

(c) Turn the engine switch on (IG), and wait for at least 60 seconds.

(d) Clear the DTCs stored in the memory Reading and Clearing Diagnostic Trouble Codes.

(e) Turn the engine switch off.

(f) Turn the engine switch on (IG), 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.

NG -- REPLACE FRONT SEAT INNER BELT ASSEMBLY LH

OK -- USE SIMULATION METHOD TO CHECK

8. REPLACE FRONT SEAT INNER BELT ASSEMBLY LH

(a) Turn the engine switch off.

(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.

(c) Replace the front seat inner belt assembly LH Removal.

HINT
Perform inspection using parts from a normal vehicle if possible.

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 engine switch on (IG), and wait for at least 60 seconds.

(c) Clear the DTCs stored in the memory Reading and Clearing Diagnostic Trouble Codes.

(d) Turn the engine switch off.

(e) Turn the engine switch on (IG), 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 -- END