Last Modified: 07-31-2024 |
6.11:8.1.0 |
Doc ID: RM10000000289VI |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [11/2022 -
] |
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B181A12; Passenger Seat Airbag Variable Vent Hole Squib Circuit Short to Battery; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ] |
DTC
|
B181A12
|
Passenger Seat Airbag Variable Vent Hole Squib Circuit Short to Battery
|
DESCRIPTION
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
Warning Indicate
|
DTC Output from
|
Priority
|
Test Mode / Check Mode
|
B181A12
|
Passenger Seat Airbag Variable Vent Hole Squib Circuit Short to Battery
|
-
The airbag sensor assembly detects a short to +B in the front passenger side airbag variable vent hole squib circuit for 0.5 seconds.
-
Instrument panel passenger airbag assembly malfunction
-
Airbag sensor assembly malfunction
|
-
Harness or connector
-
Instrument panel passenger airbag assembly
-
Airbag sensor assembly
|
Comes on
|
SRS Airbag
|
A
|
Applies to check mode
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
-
To perform the simulation method, enter check mode (signal check) with the GTS.
Click here
-
Perform the simulation method while checking the Data List.
Click here
PROCEDURE
Pre-procedure1
(a) Turn the ignition switch to ON, and wait for at least 60 seconds.
Procedure1
(b) Clear the DTCs stored in memory.
Body Electrical > SRS Airbag > Clear DTCs
Post-procedure1
(c) Turn the ignition switch off.
NEXT
|
|
|
Pre-procedure1
(a) Turn the ignition switch to ON, and wait for at least 60 seconds.
Procedure1
(b) Check for DTCs.
Body Electrical > SRS Airbag > Trouble Codes
Result
|
Proceed to
|
B181A12 is output
|
A
|
B181A12 is not output
|
B
|
Post-procedure1
(c) None
A
|
|
|
3.
|
CHECK CONNECTION OF CONNECTORS
|
Pre-procedure1
(a) Turn the ignition switch off.
(b) Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.
Procedure1
(c) Check that the connectors are properly connected to the instrument panel passenger airbag assembly and airbag sensor assembly.
OK:
The connectors are properly connected.
Post-procedure1
(d) None
NG |
|
CONNECT CONNECTORS PROPERLY
|
OK
|
|
|
Pre-procedure1
(a) Disconnect the airbag sensor assembly connector.
|
|
*1
|
Instrument Panel Passenger Airbag Assembly
|
*2
|
Airbag Sensor Assembly
|
*3
|
Wire Harness
|
|
|
(b) Disconnect the instrument panel passenger airbag assembly connector.
Procedure1
(c) Check that the terminals of the connectors are not deformed or damaged.
OK:
The terminals are not deformed or damaged.
(d) Check that the connectors are not loose, deformed or damaged.
OK:
The connector locking button is not disengaged, and the claw of the lock is not deformed or damaged.
(e) Check that the short springs of the activation prevention mechanism of the wire harness connector are not deformed or damaged.
OK:
The short springs are not deformed or damaged.
Post-procedure1
(f) None
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
Pre-procedure1
(a) Connect the airbag sensor assembly connector.
|
|
*1
|
Instrument Panel Passenger Airbag Assembly
|
*2
|
Airbag Sensor Assembly
|
*3
|
Wire Harness
|
*4
|
SST
|
*a
|
Front view of wire harness connector
(to Instrument Panel Passenger Airbag Assembly)
|
*b
|
Color: Green
|
|
|
(b) Connect SST (resistance: 2.1 Ω) to connector C (green connector).
CAUTION:
Never connect the tester to the instrument panel passenger airbag assembly for measurement, as this may lead to a serious injury due to airbag deployment.
NOTICE:
-
Do not forcibly insert SST into the terminals of the connector when connecting SST.
-
Insert SST straight into the terminals of the connector.
SST: 09843-18061
(c) Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
(d) Turn the ignition switch to ON, and wait for at least 60 seconds.
Procedure1
(e) Clear the DTCs stored in memory.
Body Electrical > SRS Airbag > Clear DTCs
Post-procedure1
(f) Turn the ignition switch off.
NEXT
|
|
|
6.
|
CHECK INSTRUMENT PANEL PASSENGER AIRBAG ASSEMBLY
|
Pre-procedure1
(a) Turn the ignition switch to ON, and wait for at least 60 seconds.
Procedure1
(b) Check for DTCs.
Body Electrical > SRS Airbag > Trouble Codes
Result
|
Proceed to
|
B181A12 is not output
|
A
|
B181A12 is output
|
B
|
HINT:
Codes other than DTC B181A12 may be output at this time, but they are not related to this check.
Post-procedure1
(c) Turn the ignition switch off.
(d) Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.
(e) Disconnect SST from connector C.
B
|
|
|
7.
|
CHECK HARNESS AND CONNECTOR
|
Pre-procedure1
(a) Disconnect the airbag sensor assembly connector.
(b) Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
(c) Turn the ignition switch to ON.
Procedure1
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
g3-1 (VHP-) - Body ground
|
Ignition switch ON
|
Below 1 V
|
g3-2 (VHP+) - Body ground
|
Ignition switch ON
|
Below 1 V
|
Result:
|
|
*1
|
Instrument Panel Passenger Airbag Assembly
|
*2
|
Airbag Sensor Assembly
|
*3
|
Wire Harness
|
*a
|
Front view of wire harness connector
(to Instrument Panel Passenger Airbag Assembly)
|
*b
|
Color: Green
|
|
|
Post-procedure1
(e) Turn the ignition switch off.
(f) Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
Pre-procedure1
(a) Connect the airbag sensor assembly connector.
|
|
*1
|
Instrument Panel Passenger Airbag Assembly
|
*2
|
Airbag Sensor Assembly
|
*3
|
Wire Harness
|
|
|
(b) Connect the instrument panel passenger airbag assembly connector.
(c) Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
(d) Turn the ignition switch to ON, and wait for at least 60 seconds.
Procedure1
(e) Clear the DTCs stored in memory.
Body Electrical > SRS Airbag > Clear DTCs
Post-procedure1
(f) Turn the ignition switch off.
NEXT
|
|
|
Pre-procedure1
(a) Turn the ignition switch to ON, and wait for at least 60 seconds.
Procedure1
(b) Check for DTCs.
Body Electrical > SRS Airbag > Trouble Codes
Result
|
Proceed to
|
B181A12 is not output
|
A
|
B181A12 is output
|
B
|
HINT:
Codes other than DTC B181A12 may be output at this time, but they are not related to this check.
Post-procedure1
(c) None
|