Yaris 2007

1.5L L4 VIN - Std 2

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Trouble Code: B1653/35



Seat Position Airbag Sensor Circuit Malfunction

Possible Causes:



Floor wire
 
Seat position airbag sensor
 
Center airbag sensor assembly
 

Trouble Code: B1655/37



Driver Side Seat Belt Buckle Switch Circuit Malfunction

Possible Causes:



Floor wire
 
Front seat inner belt assembly LH (Driver side seat belt buckle switch)
 
Center airbag sensor assembly
 

Trouble Code: B1660/43



Passenger Airbag ON/OFF Indicator Circuit Malfunction

Possible Causes:



Instrument panel wire
 
Instrument panel wire No. 2
 
Clock assembly (Passenger airbag ON/OFF indicator)
 
Center airbag sensor assembly
 

Trouble Code: B1771



Passenger Side Buckle Switch Circuit Malfunction

Possible Causes:



Front seat inner belt assy RH (Buckle switch RH)
 
Front seat wire RH
 
Occupant classification ECU
 

Trouble Code: B1780



Front Occupant Classification Sensor LH Circuit Malfunction

Possible Causes:



Front seat with adjuster frame assembly RH (Front occupant classification sensor LH)
 
Occupant classification ECU
 
Front seat wire RH
 

Trouble Code: B1781



Front Occupant Classification Sensor RH Circuit Malfunction

Possible Causes:



Front seat with adjuster frame assembly RH (Front occupant classification sensor RH)
 
Occupant classification ECU
 
Front seat wire RH
 

Trouble Code: B1782



Rear Occupant Classification Sensor LH Circuit Malfunction

Possible Causes:



Front seat with adjuster frame assembly RH (Rear occupant classification sensor LH)
 
Occupant classification ECU
 
Front seat wire RH
 

Trouble Code: B1783



Rear Occupant Classification Sensor RH Circuit Malfunction

Possible Causes:



Front seat with adjuster frame assembly RH (Rear occupant classification sensor RH)
 
Occupant classification ECU
 
Front seat wire RH
 

Trouble Code: B1785



Front Occupant Classification Sensor LH Collision Detection

Possible Causes:



Front seat with adjuster frame assembly RH (Front occupant classification sensor LH)
 
Occupant classification ECU
 

Trouble Code: B1786



Front Occupant Classification Sensor RH Collision Detection

Possible Causes:



Front seat with adjuster frame assembly RH (Front occupant classification sensor RH)
 
Occupant classification ECU
 

Trouble Code: B1787



Rear Occupant Classification Sensor LH Collision Detection

Possible Causes:



Front seat with adjuster frame assembly RH (Rear occupant classification sensor LH)
 
Occupant classification ECU
 

Trouble Code: B1788



Rear Occupant Classification Sensor RH Collision Detection

Possible Causes:



Front seat with adjuster frame assembly RH (Rear occupant classification sensor RH)
 
Occupant classification ECU
 

Trouble Code: B1790



Center Airbag Sensor Assembly Communication Circuit Malfunction

Possible Causes:



Occupant classification ECU
 
Center airbag sensor assembly
 
Floor wire (with Side and curtain shield airbag)
 
Instrument panel wire No. 3 (without Side and curtain shield airbag)
 

Trouble Code: B1793



Occupant Classification Sensor Power Supply Circuit Malfunction

Possible Causes:



Front seat with adjuster frame assembly RH (Occupant classification sensors)
 
Occupant classification ECU
 
Front seat wire RH
 

Trouble Code: B1794



Open in Occupant Classification ECU Battery Positive Line

Possible Causes:



Battery
 
ECU-B Fuse
 
Front seat wire RH
 
Occupant classification ECU
 

Trouble Code: B1795



Occupant Classification ECU Malfunction

Possible Causes:



Occupant classification ECU
 

Trouble Code: B1796



Sleep Operation Failure Of Occupant Classification ECU

Possible Causes:



Occupant classification ECU
 

Trouble Code: B1800/51



Short in Driver Side Squib Circuit

Possible Causes:



Instrument panel wire
 
Spiral cable
 
Steering pad (Driver side squib)
 
Center airbag sensor assembly
 

Trouble Code: B1801/51



Open in Driver Side Squib Circuit

Possible Causes:



Instrument panel wire
 
Spiral cable
 
Steering pad (Driver side squib)
 
Center airbag sensor assembly
 

Trouble Code: B1802/51



Short To GND In Driver Side Squib Circuit

Possible Causes:



Instrument panel wire
 
Spiral cable
 
Steering pad (Driver side squib)
 
Center airbag sensor assembly
 

Trouble Code: B1803/51



Short to B+ in Driver Side Squib Circuit

Possible Causes:



Instrument panel wire
 
Spiral cable
 
Steering pad (Driver side squib)
 
Center airbag sensor assembly
 

Trouble Code: B1805/52



Short in Front Passenger Side Squib Circuit

Possible Causes:



Instrument panel wire
 
Front passenger airbag assembly (Front passenger side squib)
 
Center airbag sensor assembly
 

Trouble Code: B1806/52



Open in Front Passenger Side Squib Circuit

Possible Causes:



Instrument panel wire
 
Front passenger airbag assembly (Front passenger side squib)
 
Center airbag sensor assembly
 

Trouble Code: B1807/52



Short In P Squib Circuit (To Ground)

Possible Causes:



Instrument panel wire
 
Instrument panel wire No.2
 
Front passenger airbag assy (P squib)
 
Airbag sensor assy center
 

Trouble Code: B1808/52



Short to B+ in Front Passenger Side Squib Circuit

Possible Causes:



Instrument panel wire
 
Front passenger airbag assembly (Front passenger side squib)
 
Center airbag sensor assembly
 

Trouble Code: B1810/53



Short In D Squib (Dual Stage - 2nd Step) Circuit

Possible Causes:



Horn button assy (D squib, Dual stage - 2nd step)
 
Spiral cable sub-assy
 
Airbag sensor assy center
 
Instrument panel wire
 

Trouble Code: B1811/53



Open In D Squib (Dual Stage - 2nd Step) Circuit

Possible Causes:



Horn button assy (D squib, Dual stage - 2nd step)
 
Spiral cable sub-assy
 
Airbag sensor assy center
 
Instrument panel wire
 

Trouble Code: B1812/53



Short to GND in Driver Side Squib 2nd Step Circuit

Possible Causes:



Instrument panel wire
 
Spiral cable
 
Steering pad (Driver side squib 2nd step)
 
Center airbag sensor assembly
 

Trouble Code: B1813/53



Short to B+ in Driver Side Squib 2nd Step Circuit

Possible Causes:



Instrument panel wire
 
Spiral cable
 
Steering pad (Driver side squib 2nd step)
 
Center airbag sensor assembly
 

Trouble Code: B1815/54



Short In P Squib (Dual Stage - 2nd step) Circuit

Possible Causes:



Instrument panel wire
 
Instrument panel wire No.2
 
Front passenger airbag assy (P squib, Dual stage - 2nd
 



Airbag sensor assy center
 

Trouble Code: B1816/54



Open In P Squib (Dual Stage - 2nd step) Circuit

Possible Causes:



Instrument panel wire
 
Instrument panel wire No.2
 
Front passenger airbag assy (P squib, Dual stage - 2nd
 



Airbag sensor assy center
 

Trouble Code: B1817/54



Short to GND in Front Passenger Side Squib 2nd Step Circuit

Possible Causes:



Front passenger airbag assembly (front passenger side squib, dual stage - 2nd step)
 
Center airbag sensor assembly
 
Instrument panel wire
 
Instrument panel wire assembly
 

Trouble Code: B1818/54



Short to B+ in Front Passenger Side Squib 2nd Step Circuit

Possible Causes:



Instrument panel wire
 
Front passenger airbag assembly (Front passenger side squib 2nd step)
 
Center airbag sensor assembly
 

Trouble Code: B1820/55



Short in Front Driver Side - Side Squib Circuit

Possible Causes:



Floor wire
 
Front seat side airbag assembly LH (Driver side - side squib)
 
Center airbag sensor assembly
 

Trouble Code: B1821/55



Open in Front Driver Side - Side Squib Circuit

Possible Causes:



Floor wire
 
Front seat side airbag assembly LH (Driver side - side squib)
 
Center airbag sensor assembly
 

Trouble Code: B1822/55



Short to GND in Front Driver Side - Side Squib Circuit

Possible Causes:



Floor wire
 
Front seat side airbag assembly LH (Driver side - side squib)
 
Center airbag sensor assembly
 

Trouble Code: B1823/55



Short to B+ in Front Driver Side - Side Squib Circuit

Possible Causes:



Floor wire
 
Front seat side airbag assembly LH (Driver side - side squib)
 
Center airbag sensor assembly
 

Trouble Code: B1825/56



Short in Front Passenger Side - Side Squib Circuit

Possible Causes:



Floor wire
 
Front seat side airbag assembly RH (Front passenger side - side squib)
 
Center airbag sensor assembly
 

Trouble Code: B1826/56



Open in Front Passenger Side - Side Squib Circuit

Possible Causes:



Floor wire
 
Front seat side airbag assembly RH (Front passenger side - side squib)
 
Center airbag sensor assembly
 

Trouble Code: B1827/56



Short In Side Squib (P Seat Side) Circuit (To Ground)

Possible Causes:



Front RH seat assy (Side squib (P seat side))
 
Airbag sensor assy center
 
Floor wire No.2
 

 
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