DTC B1071-1B / B1072-1B
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 |
|---|---|
|
B1071-1B: Left-Side Rear Seat Belt Pretensioner Circuit High Resistance Left-side rear seat belt pretensioner circuit resistance is more than specified range. |
•Left-side and/or right-side rear seat belt pretensioner circuit
•Left-side and/or right-side rear seat belt pretensioner •SDM |
|
B1072-1B: Right-Side Rear Seat Belt Pretensioner Circuit High Resistance Right-side rear seat belt pretensioner circuit resistance is more than specified range. |
Circuit Diagram
| [A]: | LHD model | A2. | Left-side rear seat belt pretensioner operation signal ground circuit | 3. | SDM |
| [B]: | RHD model | A3. | Right-side rear seat belt pretensioner operation signal output circuit | 4. | Shorting bar |
| [C]: | “L275” and “L276” connector (View: [a]) | A4. | Right-side rear seat belt pretensioner operation signal ground circuit | 5. | Floor harness |
| [D]: | “L05” connector (View: [a]) | 1. | Left-side rear seat belt pretensioner | ||
| A1. | Left-side rear seat belt pretensioner operation signal output circuit | 2. | Right-side rear seat belt pretensioner |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Air Bag Diagnostic System Check” performed?
|
Go to Step 2.
|
|
| 2 |
Seat belt pretensioner check
1)Check that ignition is “OFF”.
2)Check for proper connection to “L275” or “L276” connector.
3)Disconnect “L275” or “L276” connector.
4)Connect “STEERING WHEEL” harness (1) of special tool (C), special tools (A) and (B) to “L275” or “L276” connector.
5)Set ignition “ON”.
6)Check for DTC.
Is DTC B1071-1B or DTC B1072-1B indicated?
|
Go to Step 3.
|
Replace rear seat belt pretensioner.
|
| 3 |
Floor harness circuit check
1)Set ignition “OFF”.
2)Check for proper connection to “L05” connector.
3)Disconnect “L05” connector.
4)Release shorting bar in SDM connector inserting release tool (B).
5)Check the following points.
•Resistance of “A1” and “A2” circuits (DTC B1071-1B): 1 Ω or less
•Resistance of “A3” and “A4” circuits (DTC B1072-1B): 1 Ω or less  Is check result OK?
|
Replace SDM and recheck DTC.
|
Replace floor harness.
|
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.