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Diagnostic Trouble Code Chart

If a trouble code is displayed during the DTC check, check the circuit listed for the code in the table below (Proceed to the reference listed for that circuit).

HINT: 

When DTC B1150/23 is detected as a result of troubleshooting for the Airbag System, perform troubleshooting for the Occupant Classification System as shown in the chart below.

OCCUPANT CLASSIFICATION SYSTEM:

DTC Code Detection Item Trouble Area Reference
B1771 Passenger Side Buckle Switch Circuit Malfunction 1. Front seat inner belt assembly RH (Passenger side buckle switch)
2. Occupant classification ECU
3. Front seat wire RH
Refer to DTC B1771: Passenger Side Buckle Switch Circuit Malfunction
B1780 Front Occupant Classification Sensor LH Circuit Malfunction 1. Front seat with adjuster frame assembly RH (Front
occupant classification sensor
LH)
2. Occupant classification ECU
3. Front seat wire RH
Refer to DTC B1780: Front Occupant Classification Sensor LH Circuit Malfunction
B1781 Front Occupant Classification Sensor RH Circuit Malfunction 1. Front seat with adjuster frame assembly RH (Front
occupant classification sensor
RH)
2. Occupant classification ECU
3. Front seat wire RH
Refer to DTC B1781: Front Occupant Classification Sensor RH Circuit Malfunction
B1782 Rear Occupant Classification Sensor LH Circuit Malfunction 1. Front seat with adjuster frame assembly RH (Rear
occupant classification sensor
LH)
2. Occupant classification ECU
3. Front seat wire RH
Refer to DTC B1782: Rear Occupant Classification Sensor LH Circuit Malfunction
B1783 Rear Occupant Classification Sensor RH Circuit Malfunction 1. Front seat with adjuster frame assembly RH (Rear
occupant classification sensor
RH)
2. Occupant classification ECU
3. Front seat wire RH
Refer to DTC B1783: Rear Occupant Classification Sensor RH Circuit Malfunction
B1785 Front Occupant Classification Sensor LH Collision Detection 1. Front seat with adjuster frame assembly RH (Front
occupant classification sensor
LH)
2. Occupant classification ECU
Refer to DTC B1785: Front Occupant Classification Sensor LH Collision Detection
B1786 Front Occupant Classification Sensor RH Collision Detection 1. Front seat with adjuster frame assembly RH (Front
occupant classification sensor
RH)
2. Occupant classification ECU
Refer to DTC B1786: Front Occupant Classification Sensor RH Collision Detection
B1787 Rear Occupant Classification Sensor LH Collision Detection 1. Front seat with adjuster frame assembly RH (Rear
occupant classification sensor
LH)
2. Occupant classification ECU
Refer to DTC B1787: Rear Occupant Classification Sensor LH Collision Detection
B1788 Rear Occupant Classification Sensor RH Collision Detection 1. Front seat with adjuster frame assembly RH (Rear
occupant classification sensor
RH)
2. Occupant classification ECU
Refer to DTC B1788: Rear Occupant Classification Sensor RH Collision Detection
B1790 Center Airbag Sensor Assembly Communication Circuit Malfunction 1. Occupant classification ECU
2. Center airbag sensor assembly
3. Floor wire
4. Front seat wire RH
Refer to DTC B1790: Center Airbag Sensor Assembly Communication Circuit Malfunction
B1793 Occupant Classification Sensor Power Supply Circuit Malfunction 1. Front seat with adjuster frame assembly RH (Occupant classification sensors)
2. Occupant classification ECU
3. Front seat wire RH
Refer to DTC B1793: Occupant Classification Sensor Power Supply Circuit Malfunction
B1794 Open in Occupant Classification ECU Battery Positive Line 1. Battery
2. ECU-B Fuse
3. Floor wire
4. Front seat wire RH
5. Occupant classification
ECU
Refer to DTC B1794: Open in Occupant Classification ECU Battery Positive Line
B1795 Occupant Classification ECU Malfunction 1. Battery
2. ECU-B Fuse
3. Floor wire
4. Front seat wire RH
5. Front seat inner belt assembly RH (Buckle switch RH)
6. Occupant classification
ECU
Refer to DTC B1795: Occupant Classification ECU Malfunction
B1796 Sleep Operation Failure of Occupant Classification ECU Occupant classification ECU Refer to DTC B1796: Sleep Operation Failure of Occupant Classification ECU