Diagnostic Trouble Code Chart
WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
- When DTC B1650/32 is detected as a result of troubleshooting for the "AIRBAG SYSTEM", perform troubleshooting for the "OCCUPANT CLASSIFICATION SYSTEM" as shown in the chart below.
- Use the intelligent tester to read and clear the DTC of the occupant classification ECU, otherwise the DTCs cannot be read and cleared.
Occupant classification system:
DTC TROUBLE DETECTION CONDITION CHART
| DTC Code | Detection Item | Trouble Area | Passenger Airbag ON/ OFF Indicator (OFF Indicator) |
|---|---|---|---|
| B1771 | Passenger Side Buckle Switch Circuit Malfunction |
|
ON |
| B1773 | Belt Tension Sensor Circuit Malfunction |
|
ON |
| B1774 | Pressure Sensor Circuit Malfunction |
|
ON |
| B1775 | Pressure Sensor Power Source Circuit Malfunction |
|
ON |
| B1776 | Seat Belt Tension Sensor Power Source Circuit Malfunction |
|
ON |
| B1790 | Center Airbag Sensor Assembly Communication Circuit Malfunction |
|
ON |
| B1795 | Occupant Classification ECU Malfunction | Occupant classification ECU | ON |
| B1797 | Calibration Malfunction |
|
ON |