B161A

SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B161A/8A: Lost Communication with Front Satellite Sensor Bus
B161A/8A - Lost Communication with Front Satellite Sensor Bus

DESCRIPTION

The front collision sensor circuit (front airbag sensor RH circuit and front airbag sensor LH circuit) is composed of the center airbag sensor assembly, front airbag sensor RH and front airbag sensor LH.

The front airbag sensor RH or front 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 B161A/8A is stored when a malfunction is detected in the front collision sensor circuit (front airbag sensor RH circuit and front airbag sensor LH circuit).





WIRING DIAGRAM









INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC

(a) Turn the ignition switch off.

(b) Turn the ignition switch to ON, and wait for at least 60 seconds.

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

Result





B -- GO TO DTC B1613/83 B1612

C -- GO TO DTC B1618/84 B1617
A -- Continue to next step.

2. CHECK DTC

(a) Turn the ignition switch to ON, and wait for at least 60 seconds.

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

(c) Turn the ignition switch off.

(d) Turn the ignition switch to ON, and wait for at least 60 seconds.

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

OK:

DTC B161A/8A is not output.

HINT
Codes other than DTC B161A/8A 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