DTC B1090-14 / B1090-15 / B1090-87 / B1091-14 / B1091-15 / B1091-87
Precautions: Precautions for Air Bag System Service · Precautions for Handling and Storage of Air Bag System Components · Precautions for Disposal of Air Bag and Seat Belt Pretensioner · Precautions for Restraint · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
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B1090-14: Driver Forward Impact sensor Circuit Shorted to Ground Driver-side forward impact sensor circuit has been shorted to ground. |
•Driver-side and/or passenger-side forward impact sensor
•Driver-side and/or passenger-side forward impact sensor circuit •SDM |
|
B1090-15: Driver Forward Impact Sensor Circuit Shorted to Power Supply Driver-side forward impact sensor circuit has been shorted to power supply or opened. |
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B1090-87: Driver Forward Impact sensor Communication Data Invalid Driver-side forward impact sensor has communicated with invalid data. |
|
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B1091-14: Passenger Forward Impact Sensor Circuit Shorted to Ground Passenger-side forward impact sensor circuit has been shorted to ground. |
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B1091-15: Passenger Forward Impact Sensor Circuit Shorted to Power Supply Passenger-side forward impact sensor circuit has been shorted to power supply or opened. |
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B1091-87: Passenger Forward Impact sensor Communication Data Invalid Passenger-side forward impact sensor has communicated with invalid data. |
Circuit Diagram
| [A]: | “E40” and “E41” connector (View: [a]) | A3. | Passenger-side forward impact sensor signal output circuit | 1. | Driver-side forward impact sensor |
| [B]: | “E388” connector (View: [a]) | A4. | Passenger-side forward impact sensor signal ground circuit | 2. | Passenger-side forward impact sensor |
| [C]: | “L372” connector (View: [a]) | A5. | Driver-side forward impact sensor signal output circuit | 3. | SDM |
| [D]: | “L04” connector (View: [a]) | A6. | Driver-side forward impact sensor signal ground circuit | 4. | Floor harness |
| A1. | Driver-side forward impact sensor signal output circuit | A7. | Passenger-side forward impact sensor signal output circuit | 5. | Main harness |
| A2. | Driver-side forward impact sensor signal ground circuit | A8. | Passenger-side forward impact sensor signal ground circuit |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Air Bag Diagnostic System Check” performed?
|
Go to Step 2.
|
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| 2 |
Floor harness circuit check
1)Check that ignition is “OFF”.
2)Disconnect “L04” connector.
3)Disconnect “L372” connector.
4)Check the following point.
•Resistance of “A5”, “A6”, “A7” and “A8” circuits: 1 Ω or less
 Is check result OK?
|
Go to Step 3.
|
Replace floor harness.
|
| 3 |
Floor harness circuit
1)Check the following points.
•Resistance between “L04-8” and “L04-7” terminals (DTC B1090-14 / B1090-15 / B1090-87): infinity
•Resistance between “L04-12” and “L04-11” terminals (DTC B1091-14 / B1091-15 / B1091-87): infinity  Is check result OK?
|
Go to Step 4.
|
Replace floor harness.
|
| 4 |
Floor harness circuit check
1)Check the following points.
•Resistance between each of “A5” and “A6” circuits and ground (DTC B1090-14 / B1090-15 / B1090-87): infinity
•Resistance between each of “A7” and “A8” circuits and ground (DTC B1091-14 / B1091-15 / B1091-87): infinity  Is check result OK?
|
Go to Step 5.
|
Replace floor harness.
|
| 5 |
Floor harness circuit check
1)Set ignition “ON”.
2)Check the following points.
•Voltage between each of “A5” and “A6” circuits and ground (DTC B1090-14 / B1090-15 / B1090-87): 0 V
•Voltage between each of “A7” and “A8” circuits and ground (DTC B1091-14 / B1091-15 / B1091-87): 0 V  Is check result OK?
|
Go to Step 6.
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Replace floor harness.
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| 6 |
Main harness circuit check
1)Set ignition “OFF”.
2)Disconnect “E40” or “E41” connector.
3)Check the following points.
•Resistance of “A1” and “A2” circuits (DTC B1090-14 / B1090-15 / B1090-87): 1 Ω or less
•Resistance of “A3” and “A4” circuits (DTC B1091-14 / B1091-15 / B1091-87): 1 Ω or less  Is check result OK?
|
Go to Step 7.
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Replace main harness.
|
| 7 |
Main harness circuit check
1)Check the following points.
•Resistance between “E40-1” and “E40-2” terminals (DTC B1090-14 / B1090-15 / B1090-87): infinity
•Resistance between “E41-1” and “E41-2” terminals (DTC B1091-14 / B1091-15 / B1091-87): infinity  Is check result OK?
|
Go to Step 8.
|
Replace main harness.
|
| 8 |
Main harness circuit check
1)Check the following points.
•Resistance between each of “A1” and “A2” circuits and ground (DTC B1090-14 / B1090-15 / B1090-87): infinity
•Resistance between each of “A3” and “A4” circuits and ground (DTC B1091-14 / B1091-15 / B1091-87): infinity  Is check result OK?
|
Go to Step 9.
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Replace main harness.
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| 9 |
Main harness circuit check
1)Set ignition “ON”.
2)Check the following points.
•Voltage between each of “A1” and “A2” circuits and ground (DTC B1090-14 / B1090-15 / B1090-87): 0 V
•Voltage between each of “A3” and “A4” circuits and ground (DTC B1091-14 / B1091-15 / B1091-87): 0 V  Is check result OK?
|
Go to Step 10.
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Replace main harness.
|
| 10 |
Forward impact sensor check
1)Check that ignition is “OFF”.
2)Replace forward impact sensor.
3)Set ignition “ON”.
4)Check for DTC.
Is DTC detected?
|
Replace SDM and recheck DTC.
|
End.
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NOTE:
Upon completion of inspection and repair work, perform the following items.
•Reconnect all air bag system components and check that all components are properly mounted.
•Clear DTCs, referring to DTC Clearance if any DTC is detected.
•Repeat Air Bag Diagnostic System Check to check that the trouble has been solved.
•Clear DTCs, referring to DTC Clearance if any DTC is detected.
•Repeat Air Bag Diagnostic System Check to check that the trouble has been solved.