Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction

Restraints. Camry. Acv40 Gsv40
Supplemental Restraint System. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DTC

CHECK CONNECTION OF CONNECTORS

CHECK CONNECTORS

CHECK WIRE HARNESS (OPEN)

CHECK WIRE HARNESS (SHORT)

CHECK WIRE HARNESS (SHORT TO B+)

CHECK WIRE HARNESS (SHORT TO GROUND)

CHECK FRONT SEAT INNER BELT ASSEMBLY (DRIVER SIDE)

REPLACE FRONT SEAT INNER BELT ASSEMBLY (DRIVER SIDE)

CHECK CENTER AIRBAG SENSOR ASSEMBLY

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

DTC No.
DTC Detection Condition
Trouble Area
B1655/37
  1. The center airbag sensor assembly receives a line short circuit signal, an open circuit signal, a short circuit to ground signal or a short circuit to B+ signal in the driver side seat belt buckle switch circuit for 2 seconds.
  2. Front seat inner belt assembly (driver side) malfunction
  3. Center airbag sensor assembly malfunction
  1. Floor wire (for LHD)
  2. Floor wire No. 2 (for RHD)
  3. Front seat inner belt assembly (Driver side seat belt buckle switch)
  4. Center airbag sensor assembly

WIRING DIAGRAM


Camry. Acv40 Gsv40.Supplemental Restraint System.Airbag System. Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction


INSPECTION PROCEDURE

1.CHECK DTC


    Camry. Acv40 Gsv40.Supplemental Restraint System.Airbag System. Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction

  1. Turn the ignition switch to the ON position, and wait for at least 60 seconds.

  1. Clear the DTCs stored in the memory (CAMRY_ACV40 RM000000XFE07JX.html).

  1. Turn the ignition switch to the LOCK position.

  1. Turn the ignition switch to the ON position, and wait for at least 60 seconds.

  1. Check for DTCs (CAMRY_ACV40 RM000000XFE07JX.html).

    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 (CAMRY_ACV40 RM000000XFD07AX.html)
NG


2.CHECK CONNECTION OF CONNECTORS

  1. Turn the ignition switch to the LOCK position.

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

  1. Check that the connectors are properly connected to the center airbag sensor assembly and the front seat inner belt assembly (driver side).

    OK:
    The connectors are properly connected.


NG
CONNECT CONNECTORS, THEN GO TO STEP 1
OK


3.CHECK CONNECTORS

  1. Disconnect the connectors from the center airbag sensor assembly and the front seat inner belt assembly (driver side).

  1. Check that the connectors (on the center airbag sensor assembly side and front seat inner belt assembly (driver side) side) are not damaged.

    OK:
    The connectors are not deformed or damaged.
    Result:
    Result
    		Proceed to
    OK
    		A
    NG (for LHD)
    		B
    NG (for RHD)
    		C


B
REPAIR OR REPLACE FLOOR WIRE

C
REPAIR OR REPLACE FLOOR WIRE NO. 2
A


4.CHECK WIRE HARNESS (OPEN)


    Camry. Acv40 Gsv40.Supplemental Restraint System.Airbag System. Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction

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

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

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

    Standard resistance:
    for LHD:
    Tester connection
    		Condition
    		Specified condition
    N3-1 (LBE+) - N3-3 (LBE-)
    		Always
    		Below 1 Ω
    for RHD:
    Tester connection
    		Condition
    		Specified condition
    O24-1 (RBE+) - O24-3 (RBE-)
    		Always
    		Below 1 Ω
    Result:
    Result
    		Proceed to
    OK
    		A
    NG (for LHD)
    		B
    NG (for RHD)
    		C


B
REPAIR OR REPLACE FLOOR WIRE

C
REPAIR OR REPLACE FLOOR WIRE NO. 2
A


5.CHECK WIRE HARNESS (SHORT)


    Camry. Acv40 Gsv40.Supplemental Restraint System.Airbag System. Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction

  1. Disconnect the service wire from connector B.

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

    Standard resistance:
    for LHD:
    Tester connection
    		Condition
    		Specified condition
    N3-1 (LBE+) - N3-3 (LBE-)
    		Always
    		1 MΩ or higher
    for RHD:
    Tester connection
    		Condition
    		Specified condition
    O24-1 (RBE+) - O24-3 (RBE-)
    		Always
    		1 MΩ or higher
    Result:
    Result
    		Proceed to
    OK
    		A
    NG (for LHD)
    		B
    NG (for RHD)
    		C


B
REPAIR OR REPLACE FLOOR WIRE

C
REPAIR OR REPLACE FLOOR WIRE NO. 2
A


6.CHECK WIRE HARNESS (SHORT TO B+)


    Camry. Acv40 Gsv40.Supplemental Restraint System.Airbag System. Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction

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

  1. Turn the ignition switch to the ON position.

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

    Standard voltage:
    for LHD:
    Tester connection
    		Condition
    		Specified condition
    N3-1 (LBE+) - Body ground
    		Ignition switch ON
    		Below 1 V
    N3-3 (LBE-) - Body ground
    		Ignition switch ON
    		Below 1 V
    for RHD:
    Tester connection
    		Condition
    		Specified condition
    O24-1 (RBE+) - Body ground
    		Ignition switch ON
    		Below 1 V
    O24-3 (RBE-) - Body ground
    		Ignition switch ON
    		Below 1 V
    Result:
    Result
    		Proceed to
    OK
    		A
    NG (for LHD)
    		B
    NG (for RHD)
    		C


B
REPAIR OR REPLACE FLOOR WIRE

C
REPAIR OR REPLACE FLOOR WIRE NO. 2
A


7.CHECK WIRE HARNESS (SHORT TO GROUND)


    Camry. Acv40 Gsv40.Supplemental Restraint System.Airbag System. Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction

  1. Turn the ignition switch to the LOCK position.

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

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

    Standard resistance:
    for LHD:
    Tester connection
    		Condition
    		Specified condition
    N3-1 (LBE+) - Body ground
    		Always
    		1 MΩ or higher
    N3-3 (LBE-) - Body ground
    		Always
    		1 MΩ or higher
    for RHD:
    Tester connection
    		Condition
    		Specified condition
    O24-1 (RBE+) - Body ground
    		Always
    		1 MΩ or higher
    O24-3 (RBE-) - Body ground
    		Always
    		1 MΩ or higher
    Result:
    Result
    		Proceed to
    OK
    		A
    NG (for LHD)
    		B
    NG (for RHD)
    		C


B
REPAIR OR REPLACE FLOOR WIRE

C
REPAIR OR REPLACE FLOOR WIRE NO. 2
A


8.CHECK FRONT SEAT INNER BELT ASSEMBLY (DRIVER SIDE)


    Camry. Acv40 Gsv40.Supplemental Restraint System.Airbag System. Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction

  1. Connect the connector to the center airbag sensor assembly and the front seat inner belt assembly (driver side).

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

  1. Turn the ignition switch to the ON position, and wait for at least 60 seconds.

  1. Clear the DTCs stored in the memory (CAMRY_ACV40 RM000000XFE07JX.html).

  1. Turn the ignition switch to the LOCK position.

  1. Turn the ignition switch to the ON position, and wait for at least 60 seconds.

  1. Check for DTCs (CAMRY_ACV40 RM000000XFE07JX.html).

    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 (CAMRY_ACV40 RM000000XFD07AX.html)
NG


9.REPLACE FRONT SEAT INNER BELT ASSEMBLY (DRIVER SIDE)

  1. Turn the ignition switch to the LOCK position.

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

  1. Replace the front seat inner belt assembly (driver side) (CAMRY_ACV40 RM000001P2B01EX.html).

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

NEXT


10.CHECK CENTER AIRBAG SENSOR ASSEMBLY


    Camry. Acv40 Gsv40.Supplemental Restraint System.Airbag System. Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction

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

  1. Turn the ignition switch to the ON position, and wait for at least 60 seconds.

  1. Clear the DTCs stored in the memory (CAMRY_ACV40 RM000000XFE07JX.html).

  1. Turn the ignition switch to the LOCK position.

  1. Turn the ignition switch to the ON position, and wait for at least 60 seconds.

  1. Check for DTCs (CAMRY_ACV40 RM000000XFE07JX.html).

    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 (CAMRY_ACV40 RM000000UWV048X.html)
OK

END