Dtc B1627/82 Lost Communication With Front Passenger Side - Side Airbag Sensor Assembly

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 CONNECTION OF CONNECTOR

CHECK FLOOR WIRE (OPEN)

CHECK FLOOR WIRE (SHORT)

CHECK FLOOR WIRE (TO B+)

CHECK FLOOR WIRE (TO GROUND)

CHECK PASSENGER SIDE - SIDE AIRBAG SENSOR

DTC B1627/82 Lost Communication with Front Passenger Side - Side Airbag Sensor Assembly


DESCRIPTION

The front passenger side - side airbag sensor consists of parts including the diagnostic circuit and the lateral deceleration sensor.
When the center airbag sensor receives signals from the lateral deceleration sensor, it determines whether or not the SRS should be activated.
DTC B1627/82 is set when a malfunction is detected in the front passenger side - side airbag sensor circuit.

DTC No.
DTC Detection Condition
Trouble Area
B1627/82
When one of following conditions is met:
  1. Center airbag sensor detects line short signal, open signal, short to ground signal or short to B+ signal in front passenger side - side airbag sensor circuit for 2 seconds.
  2. Front passenger side - side airbag sensor malfunction
  3. Center airbag sensor malfunction
  1. Floor wire
  2. Side airbag sensor RH (Front passenger side - side airbag sensor) (for LHD)
  3. Side airbag sensor LH (Front passenger side - side airbag sensor) (for RHD)
  4. Center airbag sensor

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1627/82 Lost Communication With Front Passenger Side - Side Airbag Sensor Assembly


INSPECTION PROCEDURE

1.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, front passenger side rear airbag sensor and the front passenger side - side airbag sensor.

    OK:
    The connectors are properly connected.


NG
CONNECT CONNECTOR
OK


2.CHECK FLOOR WIRE (OPEN)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1627/82 Lost Communication With Front Passenger Side - Side Airbag Sensor Assembly

  1. Disconnect the connectors from the center airbag sensor and the front passenger side - side airbag sensor.

  1. for LHD:
    Using a service wire, connect L6-4 (BBR+) and L6-3 (BBR-) of connector C.

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

  1. for RHD:
    Using a service wire, connect K2-4 (BBL+) and K2-3 (BBL-) of connector C.

    NOTICE:
    Do not forcibly insert the 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
    L3-8 (BBP+) - L3-11 (BBP-)
    		Below 1 Ω
    for RHD:
    Tester Connection
    		Specified Condition
    K2-8 (BBP+) - K2-11 (BBP-)
    		Below 1 Ω


NG
REPAIR OR REPLACE FLOOR WIRE
OK


3.CHECK FLOOR WIRE (SHORT)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1627/82 Lost Communication With Front Passenger Side - Side Airbag Sensor Assembly

  1. Disconnect the service wire from connector C.

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

    Standard resistance:
    for LHD:
    Tester Connection
    		Specified Condition
    L3-8 (BBP+) - L3-11 (BBP-)
    		1 MΩ or higher
    for RHD:
    Tester Connection
    		Specified Condition
    K2-8 (BBP+) - K2-11 (BBP-)
    		1 MΩ or higher


NG
REPAIR OR REPLACE FLOOR WIRE
OK


4.CHECK FLOOR WIRE (TO B+)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1627/82 Lost Communication With Front Passenger Side - Side Airbag Sensor Assembly

  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
    L3-8 (BBP+) - Body ground
    		Below 1 V
    L3-11 (BBP-) - Body ground
    		Below 1 V
    for RHD:
    Tester Connection
    		Specified Condition
    K2-8 (BBP+) - Body ground
    		Below 1 V
    K2-11 (BBP-) - Body ground
    		Below 1 V


NG
REPAIR OR REPLACE FLOOR WIRE
OK


5.CHECK FLOOR WIRE (TO GROUND)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1627/82 Lost Communication With Front Passenger Side - Side Airbag Sensor Assembly

  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
    L3-8 (BBP+) - Body ground
    		1 MΩ or higher
    L3-11 (BBP-) - Body ground
    		1 MΩ or higher
    for RHD:
    Tester Connection
    		Specified Condition
    K2-8 (BBP+) - Body ground
    		1 MΩ or higher
    K2-11 (BBP-) - Body ground
    		1 MΩ or higher


NG
REPAIR OR REPLACE FLOOR WIRE
OK


6.CHECK PASSENGER SIDE - SIDE AIRBAG SENSOR
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1627/82 Lost Communication With Front Passenger Side - Side Airbag Sensor Assembly

  1. Connect the connectors to the center airbag sensor.

  1. Interchange the front passenger side - side airbag sensor with the driver side - side airbag sensor and connect the connectors to them.

  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).

    Result
    Result
    		Proceed to
    DTC B1622/81 and B1627/82 are not output
    		A
    DTC B1627/82 is output
    		B
    DTC B1622/81 is output
    		C
    HINT:
    DTCs other than B1622/81 and B1627/82 may be output at this time, but they are not related to this check.


B
REPLACE CENTER AIRBAG SENSOR ASSEMBLY

C
REPLACE PASSENGER SIDE - SIDE AIRBAG SENSOR
A

USE SIMULATION METHOD TO CHECK