B1620

SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B1620/21: Driver Side - Side Airbag Sensor Malfunction
B1620/21 - Driver Side - Side Airbag Sensor Malfunction

DESCRIPTION

The driver side - side collision sensor circuit (to determine deployment of the front seat side airbag assembly LH and curtain shield airbag assembly LH) is composed of the center airbag sensor assembly, side airbag sensor LH, and rear airbag sensor LH.

The side airbag sensor LH and rear airbag sensor LH detect impacts to the vehicle and send signals to the center airbag sensor assembly to determine if the airbag should be deployed.

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





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK SIDE AIRBAG SENSOR LH

(a) Turn the engine switch off.





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

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

(d) Connect the cable to the negative (-) battery terminal.

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

(f) Clear the DTCs stored in the memory DTC Check / Clear.

(g) Turn the engine switch off.

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

(i) Check for DTCs DTC Check / Clear.

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 CENTER AIRBAG SENSOR ASSEMBLY Removal

C -- REPLACE SIDE AIRBAG SENSOR LH Removal

A -- USE SIMULATION METHOD TO CHECK Diagnosis System