B1780

DTC B1780 Front Occupant Classification Sensor LH Circuit Malfunction

DESCRIPTION

DTC Detection Condition:

The front occupant classification sensor LH circuit consists of the occupant classification ECU and the front occupant classification sensor LH.

DTC B1780 is recorded when a malfunction is detected in the front occupant classification sensor LH circuit.

Wiring Diagram:

Step 1-2:

Step 3-4:

Step 5-6:

Step 7-9:

Step 10-13:

Step 13 (Continued)-14:

INSPECTION PROCEDURE

HINT:
- If troubleshooting (wire harness inspection) is difficult to perform, remove the front passenger seat installation bolts to see the undersurface of the seat cushion.
- In the case given, hold the seat so that it does not tip over. Holding the seat for a long period of time may cause a problem, such as seat rail deformation. Hold the seat up only for as long as necessary.