B1780

DTC B1780 Front Occupant Classification Sensor LH Circuit Malfunction

DESCRIPTION

DTC Detecting Conditions:

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

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

HINT:
- When DTC B1650/32 is detected as a result of troubleshooting the supplemental restraint system, perform troubleshooting for DTC B1780 of the occupant classification system.
- Use the intelligent tester to check for DTCs of the occupant classification ECU, otherwise the DTC cannot be read.

Wiring Diagram:

INSPECTION PROCEDURE

HINT:
- If troubleshooting (wire harness inspection) is difficult to perform, remove the front RH seat assembly installation bolts to see the under surface of the seat cushion.
- In the case, hold the seat so that it does not fall down. Holding the seat for a long period of time may cause problems, such as seat rail deformation. Hold the seat up only for as long as necessary.

Step 1:

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Step 8-10:

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