Airbag System (for Hatchback without VSC) (from 07/2011)

SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (for Hatchback without VSC): B1655/37: Driver Side Seat Belt Buckle Switch Circuit Malfunction
B1655/37 - Driver Side Seat Belt Buckle Switch Circuit Malfunction

DESCRIPTION

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

DTC B1655/37 is stored when a malfunction is detected in the seat belt buckle switch LH circuit.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK CONNECTORS

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(c) Check that the connectors are properly connected to the airbag sensor assembly and front seat inner belt assembly 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 airbag sensor assembly and front seat inner belt assembly LH.

(e) Check that the terminals of the connectors are not damaged.

OK:

The terminals are not deformed or damaged.

NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

2. CHECK FLOOR WIRE (OPEN)

(a) Using the service wire, connect terminals 11 (LBE+) and 12 (LBE-) of connector B.





Text in Illustration





NOTICE:
Do not forcibly insert the 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 -- REPLACE FLOOR WIRE
OK -- Continue to next step.

3. CHECK FLOOR WIRE (SHORT)

(a) Disconnect the service wire from connector B.





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

Standard Resistance:





Text in Illustration





NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

4. CHECK FLOOR WIRE (SHORT TO B+)

(a) Connect the cable to the negative (-) battery terminal.





(b) Turn the ignition switch to ON.

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:





Text in Illustration





NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

5. CHECK FLOOR WIRE (SHORT TO GROUND)

(a) Turn the ignition switch off.





(b) Disconnect the cable from the negative (-) battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

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

Standard Resistance:





Text in Illustration





NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

6. CHECK DTC

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

(b) Connect the cable to the negative (-) battery terminal.

(c) Turn the ignition switch to ON, and wait for at least 60 seconds.

(d) Clear the DTCs stored in memory Airbag System (for Hatchback without VSC).

(e) Turn the ignition switch off.

(f) Turn the ignition switch to ON, and wait for at least 60 seconds.

(g) Check for DTCs Airbag System (for Hatchback without VSC).

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 How To Proceed With Troubleshooting

7. REPLACE FRONT SEAT INNER BELT ASSEMBLY LH

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(c) Replace the front seat inner belt assembly LH with a known good one Removal (from 07/2011).

HINT
Perform the following inspection using known good parts from another vehicle if possible.

NEXT -- Continue to next step.

8. CHECK DTC

(a) Connect the cable to the negative (-) battery terminal.

(b) Turn the ignition switch to ON, and wait for at least 60 seconds.

(c) Clear the DTCs stored in memory Airbag System (for Hatchback without VSC).

(d) Turn the ignition switch off.

(e) Turn the ignition switch to ON, and wait for at least 60 seconds.

(f) Check for DTCs Airbag System (for Hatchback without VSC).

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 AIRBAG SENSOR ASSEMBLY Removal (from 07/2011)

OK -- END (FRONT SEAT INNER BELT ASSEMBLY LH WAS DEFECTIVE)