DESCRIPTION
The side collision sensor LH circuit (bus 2) consists of the airbag sensor assembly and floor side airbag sensor LH.
The floor side airbag sensor LH detects impacts to the vehicle and sends signals to the airbag sensor assembly to determine if the airbags and pretensioners should be deployed.
DTC B163A/3A is stored when a malfunction is detected in the floor side airbag sensor LH.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Test Mode / Check Mode |
---|---|---|---|---|
B163A/3A |
Side Airbag Sensor Assembly No.2 (LH) |
Any of the following conditions is met:
|
|
Does not apply to test/check mode |
Vehicle Condition |
|||
---|---|---|---|
Pattern 1 |
Pattern 2 |
||
Diagnosis Condition |
Ignition switch ON |
○ |
○ |
Malfunction Status |
Floor side airbag sensor LH malfunction |
○ |
- |
Airbag sensor assembly malfunction |
- |
○ |
|
Detection Time |
- |
- |
|
Number of Trips |
1 trip |
1 trip |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
WIRING DIAGRAM
Click here
CAUTION / NOTICE / HINT
NOTICE:
After turning the ignition 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.
Click here
PROCEDURE
1. |
CHECK FLOOR SIDE AIRBAG SENSOR LH |
(a) Turn the ignition 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 floor side airbag sensor LH with RH and connect the connectors.
(d) Connect the cable to the negative (-) battery terminal.
(e) Clear the DTCs stored in memory.
Click here
(f) Turn the ignition switch off.
(g) Turn the ignition switch ON, and wait for at least 60 seconds.
(h) Check for DTCs.
Click here
HINT:
Codes other than DTCs B162A/2A and B163A/3A may be output at this time, but they are not related to this check.
Result |
Proceed to |
---|---|
DTC B163A/3A is output. |
A |
DTC B162A/2A is output. |
B |
DTCs B162A/2A and B163A/3A are not output. |
C |
(i) Turn the ignition switch off.
(j) 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.
(k) Return the floor side airbag sensor LH and RH to their original positions and connect the connectors.
A | ![]() |
REPLACE AIRBAG SENSOR ASSEMBLY |
B | ![]() |
REPLACE FLOOR SIDE AIRBAG SENSOR LH |
C | ![]() |
USE SIMULATION METHOD TO CHECK |
Toyota CH-R Service Manual > Smart Key System(for Entry Function): Open in Inside Luggage Compartment Electrical Key Oscillator Circuit (B27A7)
DESCRIPTION
The certification ECU (smart key ECU assembly) generates a request signal and
transmits the signal to the No. 3 indoor electrical key antenna assembly (inside
luggage compartment). For the No. 3 indoor electrical key antenna assembly (inside
luggage compartment) to detect when the ...
Toyota CH-R Service Manual > Continuously Variable Transaxle System: Diagnosis System
DIAGNOSIS SYSTEM
OBD II (w/ Canister Pump Module)
(a) When troubleshooting OBD II (On-Board Diagnostics) vehicles, an OBD II scan
tool (complying with SAE J1978) must be connected to the DLC3 (Data Link Connector
3) of the vehicle. Various data in the vehicle ECM (Engine Control Module) can be ...