B1771

DTC B1771 Passenger Side Buckle Switch Circuit Malfunction

DESCRIPTION

DTC Detecting Condition:

The passenger side buckle switch circuit consists of the occupant classification ECU and the front seat inner belt assembly RH.

DTC B1771 is recorded when a malfunction is detected in the passenger side buckle switch circuit.

Troubleshoot DTC B1771 first when the DTC B1771 and B1795 are output simultaneously.

Wiring Diagram:

Step 1-2:

Step 3:

Step 4:

Step 5:

Step 6-7:

Step 7(continued)-10:

Step 10(continued)-11:

INSPECTION PROCEDURE

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