DESCRIPTION
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
Warning Indicate | Test Mode / Check Mode |
---|---|---|---|---|---|
B000112 | Driver Frontal Stage 1 Deployment Control Circuit Short to Battery |
One of the following conditions is met:
|
| Comes on |
Applies to check mode |
Vehicle Condition | |||||
---|---|---|---|---|---|
Pattern 1 | Pattern 2 |
Pattern 3 | Pattern 4 | ||
Diagnosis Condition | Ignition switch ON |
○ | ○ |
○ | ○ |
Malfunction Status | The airbag ECU assembly detects a short to B+ in the driver side squib circuit |
○ | - |
- | - |
Spiral cable sub-assembly malfunction |
- | ○ |
- | - | |
Driver side squib (horn button assembly) malfunction |
- | - |
○ | - | |
Airbag ECU assembly malfunction |
- | - |
- | ○ | |
Detection Time | 0.5 seconds |
0.5 seconds | 0.5 seconds |
0.5 seconds | |
Number of Trips | 1 trip |
1 trip | 1 trip |
1 trip |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) battery terminal.
Click here
HINT:
Click here
Click here
Click here
PROCEDURE
1. | CHECK CURRENT DTC |
(a) Turn the ignition switch to ON, and wait for at least 60 seconds.
(b) Check for DTCs.
Body Electrical > SRS Airbag > Trouble Codes Result |
Proceed to |
---|---|
Current B000112 is output |
A |
Current B000112 is not output |
B |
B |
![]() | USE SIMULATION METHOD TO CHECK Click here HINT:
|
|
2. |
CHECK CONNECTION OF CONNECTORS |
(a) Turn the ignition switch off.
(b) Disconnect the cable from the negative (-) battery terminal.
CAUTION:
Wait at least 60 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
(c) Check that the connectors are properly connected to the horn button assembly, spiral cable sub-assembly and airbag ECU assembly.
OK:
The connectors are properly connected.
NG | ![]() | CONNECT CONNECTORS PROPERLY |
|
3. |
CHECK CONNECTORS |
(a) Disconnect the connectors from the horn button assembly, spiral cable sub-assembly and airbag ECU assembly.
(b) Check that the terminals of the connectors are not deformed or damaged. OK: The terminals of the connectors are not deformed or damaged. |
|
(c) Check that the short springs of the activation prevention mechanisms of the wire harness connector and spiral cable sub-assembly connector are not deformed or damaged.
OK:
The short springs are not deformed or damaged.
(d) Check that the spiral cable sub-assembly connector (on the horn button assembly side) is not loose, deformed or damaged.
OK:
The airbag connector locking button is not disengaged, and the claw of the lock is not deformed or damaged.
NG | ![]() | REPLACE SPIRAL CABLE SUB-ASSEMBLY OR REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CLEAR DTC |
(a) Connect the connectors to the airbag ECU assembly and spiral cable sub-assembly. |
|
(b) Connect the white wire side of SST (resistance 2.1 Ω) to connector E (light green connector).
CAUTION:
Never connect a tester to the horn button assembly for measurement, as this may lead to a serious injury due to airbag deployment.
NOTICE:
SST: 09843-18061
(c) Connect the cable to the negative (-) battery terminal.
(d) Turn the ignition switch to ON, and wait for at least 60 seconds.
(e) Clear the DTCs stored in memory.
Body Electrical > SRS Airbag > Clear DTCs(f) Turn the ignition switch off.
|
5. |
CHECK HORN BUTTON ASSEMBLY |
(a) Turn the ignition switch to ON, and wait for at least 60 seconds.
(b) Check for DTCs.
Body Electrical > SRS Airbag > Trouble Codes Result |
Proceed to |
---|---|
B000112 is not output |
A |
B000112 is output |
B |
HINT:
Codes other than DTC B000112 may be output at this time, but they are not related to this check.
(c) Turn the ignition switch off.
(d) Disconnect the cable from the negative (-) battery terminal.
CAUTION:
Wait at least 60 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
(e) Disconnect SST from connector E.
A |
![]() | REPLACE HORN BUTTON ASSEMBLY |
|
6. |
CHECK DRIVER SIDE SQUIB CIRCUIT |
(a) Disconnect the connector from the airbag ECU assembly.
(b) Check for a short to B+ in the circuit. (1) Connect the cable to the negative (-) battery terminal. (2) Turn the ignition switch to ON. (3) Measure the voltage according to the value(s) in the table below. Standard Voltage:
Result:
(4) Turn the ignition switch off. (5) Disconnect the cable from the negative (-) battery terminal. CAUTION: Wait at least 60 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. |
|
NG | ![]() | GO TO STEP 9 |
|
7. |
CLEAR DTC |
(a) Connect the connectors to the horn button assembly and Airbag ECU Assembly. |
|
(b) Connect the cable to the negative (-) battery terminal.
(c) Turn the ignition switch to ON, and wait for at least 60 seconds.
(d) Clear the DTCs stored in memory.
Body Electrical > SRS Airbag > Clear DTCs(e) Turn the ignition switch off.
|
8. |
CHECK DTC |
(a) Turn the ignition switch to ON, and wait for at least 60 seconds.
(b) Check for DTCs.
Body Electrical > SRS Airbag > Trouble Codes Result |
Proceed to |
---|---|
B000112 is not output |
A |
B000112 is output |
B |
HINT:
Codes other than DTC B000112 may be output at this time, but they are not related to this check.
A |
![]() | USE SIMULATION METHOD TO CHECK Click here HINT:
|
B |
![]() | REPLACE AIRBAG ECU ASSEMBLY |
9. |
CHECK HARNESS AND CONNECTOR |
(a) Disconnect the connector from the spiral cable sub-assembly.
(b) Check for a short to B+ in the circuit. (1) Connect the cable to the negative (-) battery terminal. (2) Turn the ignition switch to ON. (3) Measure the voltage according to the value(s) in the table below. Standard Voltage:
Result:
(4) Turn the ignition switch off. (5) Disconnect the cable from the negative (-) battery terminal. CAUTION: Wait at least 60 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. |
|
OK | ![]() | REPLACE SPIRAL CABLE SUB-ASSEMBLY |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |