DTC    B1620/21    Side Airbag Sensor RH Circuit Malfunction

for Preparation Click here


DESCRIPTION

The side collision sensor RH circuit (to determine deployment of the front seat airbag assembly RH and curtain shield airbag assembly RH) is composed of the airbag sensor assembly, side airbag sensor assembly RH and No. 2 side airbag sensor assembly 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 is stored when a malfunction is detected in the side airbag sensor assembly RH.

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

WIRING DIAGRAM

Refer to DTCs B1622/81, B1623/81, B1632/81, B1633/81 and B1642/81 (Click here).

INSPECTION PROCEDURE

NOTICE:
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work (Click here).

1.CHECK SIDE AIRBAG SENSOR ASSEMBLY RH


    C166177E08

  1. Turn the power switch off.

  1. Disconnect the cable from the negative (-) auxiliary battery terminal.

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

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

  1. Connect the cable to the negative (-) auxiliary battery terminal.

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

  1. Clear the DTCs stored in memory (Click here).

  1. Turn the power switch off.

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

  1. Check for DTCs (Click here).

    Result:
    Result
    		Proceed to
    DTCs B1620/21 and B1625/22 are not output.
    		A
    DTC B1625/22 is output.
    		B
    DTC B1620/21 is output.
    		C

    Text in Illustration 
    *1
    		Side Airbag Sensor Assembly LH
    *2
    		Airbag Sensor Assembly

    HINT:
    Codes other than DTCs B1620/21 and B1625/22 may be output at this time, but they are not related to this check.



B
REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH (Click here)

C
REPLACE AIRBAG SENSOR ASSEMBLY (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)