SYSTEM DIAGRAM
How To Proceed With Troubleshooting
Basic InspectionEngine Hood Courtesy Switch Circuit
DESCRIPTION
The security courtesy switch is installed together with the hood lock. This switch
turns off when the engine hood is opened and turns on when the engine hood is closed.
WIRING DIAGRAM
PROCEDURE
1.
INSPECT HOOD LOCK AS ...
Front Occupant Classification Sensor LH Circuit Malfunction (B1780)
DESCRIPTION
The front occupant classification sensor LH circuit consists of the occupant
classification ECU and front occupant classification sensor LH.
DTC B1780 is recorded when a malfunction is detected in the front occupant classification
sensor LH c ...
Back Door Closer Switch Malfunction (B2251)
DESCRIPTION
The power back door ECU (power back door motor unit)*1 or back door closer ECU
(multiplex network door ECU)*2 receives signals from the latch switch, sector switch
and back door courtesy switch, which are built into the back door lock. Based o ...