Toyota Venza: Lost Communication with Front Satellite Sensor Bus (B161A/8A)
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 .gif)
).
|
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:
- DTCs indicating communication errors will be changed to DTCs indicating errors in initialization by turning the ignition switch off and then to ON again.
- Codes other than DTCs B1613/83 and B1618/84 may be output at this time, but they are not related to this check.
| B | .gif) |
GO TO DTC B1613/83 |
| C | |
GO TO DTC B1618/84 |
|
.gif)
|
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 |
Rear Airbag Sensor RH Circuit Malfunction (B1630/23)
DESCRIPTION
The side collision sensor RH circuit (to determine deployment of the front seat
side airbag assembly RH and curtain shield airbag assembly RH) is composed of the
center airbag sensor ...
Lost Communication with Front Airbag Sensor LH (B1617/84,B1618/84)
DESCRIPTION
The front airbag sensor LH circuit consists of the center airbag sensor assembly
and front airbag sensor LH.
The front airbag sensor LH detects impacts to the vehicle and sends signals ...
Other materials about Toyota Venza:
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK AWD CONTROL ECU
(a) Measure the voltage and resistance of the connector.
Terminal No. (Symbol)
Terminal Description
Condition
Specified Condition
14 (CANH) - 16 (CANL)
...
Rear Power Window RH Auto Up / Down Function does not Operate with Rear Power
Window Switch RH
DESCRIPTION
If the manual up/down function can be performed but the auto up/down function
cannot, the fail-safe mode may be functioning.
If the power window initialization (See page
) has not been performed, the auto up/down function
will not operate.
...
Auxiliary boxes
►Type A (driver’s side instrument panel)
Push down the knob.
►Type B (front console)
Lift the lid.
►Type C (front console)
Lift the lid.
►Type D (front passenger’s side instrument
panel)
- Coin holder (type A) ...
0.2286