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

Restraints. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
Supplemental Restraint System. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

CHECK CONNECTION OF CONNECTOR

CHECK FLOOR WIRE (OPEN)

CHECK FLOOR WIRE (SHORT)

CHECK FLOOR WIRE (TO B+)

CHECK FLOOR WIRE (TO GROUND)

CHECK DRIVER SIDE SEAT INNER BELT ASSEMBLY

REPLACE DRIVER SIDE SEAT INNER BELT ASSEMBLY

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 and the front seat inner belt.
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
When one of following conditions is met:
  1. The center airbag sensor receives a line short signal, an open signal, a short to ground signal or a short to B+ signal in the driver side seat belt buckle switch circuit for 2 seconds.
  2. Driver side seat inner belt malfunction
  3. Center airbag sensor malfunction
  1. Floor wire
  2. Driver side seat inner belt
  3. Center airbag sensor

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction


INSPECTION PROCEDURE

1.CHECK FOR DTC
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction

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

  1. Clear the DTCs (RAV4_ACA30 RM000000XFE06SX.html).

  1. Turn the ignition switch off.

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

  1. Check the DTCs (RAV4_ACA30 RM000000XFE06SX.html).

    OK:
    DTC B1655/37 is not output.
    HINT:
    DTCs 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


2.CHECK CONNECTION OF CONNECTOR

  1. Turn the ignition switch off.

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

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

    OK:
    The connectors are connected.


NG
CONNECT CONNECTOR
OK


3.CHECK FLOOR WIRE (OPEN)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction

  1. Disconnect the connectors from the center airbag sensor and the driver side seat inner belt.

  1. Using a service wire, connect K1-12 (DBE-) and K1-11 (DBE+)*1 or L18-12 (DBE-) and L18-11 (DBE+)*2 of connector B.

    HINT:
    *1: for LHD
    *2: for RHD
    NOTICE:
    Do not forcibly insert a service wire into the terminals of the connector when connecting.

  1. Measure the resistance of the wire harness side connector.

    Standard resistance:
    for LHD:
    Tester Connection
    		Specified Condition
    K3-4 (LBE+) - K3-3 (LBE-)
    		Below 1 Ω
    for RHD:
    Tester Connection
    		Specified Condition
    L16-4 (RBE+) - L16-3 (RBE-)
    		Below 1 Ω


NG
REPAIR OR REPLACE FLOOR WIRE
OK


4.CHECK FLOOR WIRE (SHORT)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.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 of the wire harness side connector.

    Standard resistance:
    for LHD:
    Tester Connection
    		Specified Condition
    K3-4 (LBE+) - K3-3 (LBE-)
    		1 MΩ or higher
    for RHD:
    Tester Connection
    		Specified Condition
    L16-4 (RBE+) - L16-3 (RBE-)
    		1 MΩ or higher


NG
REPAIR OR REPLACE FLOOR WIRE
OK


5.CHECK FLOOR WIRE (TO B+)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction

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

  1. Turn the ignition switch on (IG).

  1. Measure the voltage of the wire harness side connector.

    Standard voltage:
    for LHD:
    Tester Connection
    		Specified Condition
    K3-3 (LBE-) - Body ground
    		Below 1 V
    K3-4 (LBE+) - Body ground
    		Below 1 V
    for RHD:
    Tester Connection
    		Specified Condition
    L16-3 (LBE-) - Body ground
    		Below 1 V
    L16-4 (LBE+) - Body ground
    		Below 1 V


NG
REPAIR OR REPLACE FLOOR WIRE
OK


6.CHECK FLOOR WIRE (TO GROUND)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction

  1. Turn the ignition switch off.

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

  1. Measure the resistance of the wire harness side connector.

    Standard resistance:
    for LHD:
    Tester Connection
    		Specified Condition
    K3-3 (LBE-) - Body ground
    		1 MΩ or higher
    K3-4 (LBE+) - Body ground
    		1 MΩ or higher
    for RHD:
    Tester Connection
    		Specified Condition
    L16-3 (LBE-) - Body ground
    		1 MΩ or higher
    L16-4 (LBE+) - Body ground
    		1 MΩ or higher


NG
REPAIR OR REPLACE FLOOR WIRE
OK


7.CHECK DRIVER SIDE SEAT INNER BELT ASSEMBLY
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction

  1. Connect the connectors to the center airbag sensor and the driver side seat inner belt.

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

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

  1. Clear the DTCs (RAV4_ACA30 RM000000XFE06SX.html).

  1. Turn the ignition switch off.

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

  1. Check the DTCs (RAV4_ACA30 RM000000XFE06SX.html).

    OK:
    DTC B1655/37 is not output.
    HINT:
    DTCs 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


8.REPLACE DRIVER SIDE SEAT INNER BELT ASSEMBLY

  1. Turn the ignition switch off.

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

  1. Replace the driver side seat inner belt (RAV4_ACA30 RM00000122H01ZX.html).

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

NEXT


9.CHECK CENTER AIRBAG SENSOR ASSEMBLY
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1655/37 Driver Side Seat Belt Buckle Switch Circuit Malfunction

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

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

  1. Clear the DTCs (RAV4_ACA30 RM000000XFE06SX.html).

  1. Turn the ignition switch off.

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

  1. Check the DTCs (RAV4_ACA30 RM000000XFE06SX.html).

    OK:
    DTC B1655/37 is not output.
    HINT:
    DTCs 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