| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001BKC4 |
| Model Year Start: 2019 | Model: Avalon | Prod Date Range: [04/2018 - ] |
| Title: SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (for Gasoline Model): B163A; Side Airbag Sensor Assembly No.2 (LH); 2019 - 2022 MY Avalon [04/2018 - ] | ||
|
DTC |
B163A |
Side Airbag Sensor Assembly No.2 (LH) |
DESCRIPTION
The side collision sensor LH circuit (bus 2) consists of the airbag ECU assembly and side No. 1 airbag sensor LH.
The side No. 1 airbag sensor LH detects impacts to the vehicle and sends signals to the airbag ECU assembly to determine if the airbags and pretensioners should be deployed.
DTC B163A is stored when a malfunction is detected in the side No. 1 airbag sensor LH.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Test Mode / Check Mode |
|---|---|---|---|---|---|
|
B163A |
Side Airbag Sensor Assembly No.2 (LH) |
|
|
Comes on |
Does not apply to test/check mode |
WIRING DIAGRAM
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![2019 - 2022 MY Avalon [04/2018 - ]; SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (for Gasoline Model): B163B,B163C; Side Airbag Sensor Assembly No.2 Lost Communication (LH)+](/t3Portal/stylegraphics/info.gif)
CAUTION / NOTICE / HINT
NOTICE:
After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.
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PROCEDURE
|
1. |
CHECK SIDE NO. 1 AIRBAG SENSOR LH |
|
(a) Turn the engine switch off. |
|
(b) Disconnect the cable from the negative (-) battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
(c) Interchange the side No. 1 airbag sensor LH with RH 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 memory.
Body Electrical > SRS Airbag > Clear DTCs
(g) Turn the engine switch off.
(h) Turn the engine switch on (IG), and wait for at least 60 seconds.
(i) Check for DTCs.
Body Electrical > SRS Airbag > Trouble Codes
HINT:
Codes other than DTCs B162A and B163A may be output at this time, but they are not related to this check.
|
Result |
Proceed to |
|---|---|
|
DTC B163A is output. |
A |
|
DTC B162A is output. |
B |
|
DTCs B162A and B163A are not output. |
C |
(j) Turn the engine switch off.
(k) Disconnect the cable from the negative (-) battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
(l) Return the side No. 1 airbag sensor LH and RH to their original positions and connect the connectors.
| A |
|
REPLACE AIRBAG ECU ASSEMBLY
|
| B |
|
REPLACE SIDE NO. 1 AIRBAG SENSOR LH
|
| C |
|
|
|