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).
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
B161A/8A |
|
|
WIRING DIAGRAM
PROCEDURE
1. |
CHECK DTC |
(a) Turn the ignition switch to ON, and wait for at least 60 seconds.
(b) Turn the ignition switch off.
HINT:
If a communication error occurs, DTCs for both LH and RH sides will be stored simultaneously. To identify the malfunctioning area, turn the ignition switch off and then to ON again.
(c) Turn the ignition switch to ON, and wait for at least 60 seconds.
(d) Check for DTCs (See page ).
Result |
Proceed to |
---|---|
DTCs B1613/83 and B1618/84 are not output. |
A |
DTC B1613/83 is output. |
B |
DTC B1618/84 is output. |
C |
HINT:
B | ![]() |
GO TO DTC B1613/83 |
C | ![]() |
GO TO DTC B1618/84 |
|
2. |
CHECK CENTER AIRBAG SENSOR ASSEMBLY |
(a) Turn the ignition switch to ON, and wait for at least 60 seconds.
(b) Clear the DTCs stored in memory (See page
).
(c) Turn the ignition switch off.
(d) Turn the ignition switch to ON, and wait for at least 60 seconds.
(e) Check for DTCs (See page ).
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.
OK | ![]() |
USE SIMULATION METHOD TO CHECK |
NG | ![]() |
REPLACE CENTER AIRBAG SENSOR ASSEMBLY |
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful bec ...
Removal
REMOVAL
PROCEDURE
1. PRECAUTION
CAUTION:
Be sure to read Precaution thoroughly before servicing (See page
).
2. TURN FRONT WHEELS TO FACE STRAIGHT AHEAD
3. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION:
Wait at least 90 seconds after discon ...
Weight limits
• The gross trailer weight must never exceed TWR described in the table. • The
gross combination weight must never exceed the GCWR described in the table.
• The gross vehicle weight must never exceed the GVWR indicated on the Certification
Label. ...