B1620

SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1620/21: Side Airbag Sensor RH Circuit Malfunction
B1620/21 - Side Airbag Sensor RH Circuit Malfunction

DESCRIPTION

The side airbag sensor RH consists of the diagnostic circuit, the lateral deceleration sensor, etc.

If the center airbag sensor assembly receives signals from the lateral deceleration sensor, it determines if the airbag should be deployed.

DTC B1620/21 is recorded when a malfunction is detected in the side airbag sensor RH circuit.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK SIDE AIRBAG SENSOR RH

(a) Turn the engine switch off.





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

(c) Interchange the side airbag sensor LH with RH and connect the connectors to them.

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

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

(f) Clear the DTCs stored in the memory Reading and Clearing Diagnostic Trouble Codes.

(g) Turn the engine switch off.

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

(i) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

Result:





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

B -- REPLACE SIDE AIRBAG SENSOR RH Removal

A -- CHECK CENTER AIRBAG SENSOR ASSEMBLY

C -- USE SIMULATION METHOD TO CHECK Diagnosis System

2. CHECK CENTER AIRBAG SENSOR ASSEMBLY

(a) Turn the engine switch off.





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

(c) Return the side airbag sensor LH and RH to their original positions and connect the connectors to them.

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

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

(f) Clear the DTCs stored in the memory Reading and Clearing Diagnostic Trouble Codes.

(g) Turn the engine switch off.

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

(i) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B1620/21 is not output.

HINT
Codes other than DTC B1620/21 may be output at this time, but they are not related to this check.

NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal

OK -- USE SIMULATION METHOD TO CHECK Diagnosis System