Dtc B1620/21 Side Airbag Sensor Rh Circuit Malfunction

Vehicle Interior. Yaris. Ncp93, 131
Supplemental Restraint Systems. Yaris. Ncp93, 131

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK SIDE AIRBAG SENSOR ASSEMBLY RH

DTC B1620/21 Side Airbag Sensor RH Circuit Malfunction

DTC B1622/81 Lost communication with Side Airbag Sensor RH


DESCRIPTION

The side collision sensor RH circuit (to determine deployment of the front seat side airbag assembly RH and curtain shield airbag assembly RH) is composed of the airbag sensor assembly, side airbag sensor assembly RH and rear airbag sensor RH. The side airbag sensor assembly RH detects impacts to the vehicle and sends signals to the airbag sensor assembly to determine if the airbag should be deployed. DTC B1620/21 or B1622/81 is stored when a malfunction is detected in the side collision sensor RH circuit.

DTC No.
DTC Detection Condition
Trouble Area
B1620/21
B1622/81
  1. Side airbag sensor assembly RH malfunction
  2. Airbag sensor assembly malfunction
  1. Side airbag sensor assembly RH
  2. Airbag sensor assembly

WIRING DIAGRAM


Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1620/21 Side Airbag Sensor Rh Circuit Malfunction


INSPECTION PROCEDURE

1.CHECK SIDE AIRBAG SENSOR ASSEMBLY RH
Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan). Dtc B1620/21 Side Airbag Sensor Rh Circuit Malfunction

  1. Turn the ignition switch off.

  1. 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.

  1. Interchange the side airbag sensor assembly RH with the side airbag sensor assembly LH and connect the connectors to them.

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

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

  1. Clear the DTCs stored in the memory (YARIS_NCP93 RM000000XFE0F4X.html).

  1. Turn the ignition switch off.

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

  1. Check for DTCs (YARIS_NCP93 RM000000XFE0F4X.html).

    Result
    Result
    		Proceed to
    DTC B1620/21, B1622/81, B1625/22 and B1627/82 are not output.
    		A
    DTC B1625/22 or B1627/82 is output.
    (for 5 Door)
    		B
    DTC B1625/22 or B1627/82 is output.
    (for 3 Door)
    		C
    DTC B1620/21 or B1622/81 is output.
    		D
    Text in Illustration
    *1
    		Side Airbag Sensor assembly LH
    *2
    		Airbag Sensor Assembly
    HINT:
    DTCs other than B1620/21, B1622/81, B1625/22 and B1627/82 may be output at this time, but they are not related to this check.

  1. Turn the ignition switch off.

  1. 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.

  1. Return the side airbag sensor assembly RH and the side airbag sensor assembly LH to their original positions and connect the connectors to them.



B
REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH (YARIS_NCP93 RM000003QZ000BX.html)

C
REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH (YARIS_NCP93 RM0000029C6018X.html)

D
REPLACE AIRBAG SENSOR ASSEMBLY (YARIS_NCP93 RM000000V6U02AX.html)
A

USE SIMULATION METHOD TO CHECK (YARIS_NCP93 RM00000135202EX.html)