What causes B1771 on a Toyota?

Failed right front seat inner belt Buckle switch harness open or shorted Poor electrical connection Failed occupant classification ECU Low system voltage

How do I fix B1771 on a Toyota?

Disconnect the battery and wait before touching SRS circuits Confirm the code and check the passenger buckle Inspect and reseat the buckle switch connectors Test the buckle switch circuit Replace the buckle assembly only after tests fail

B1771 Front passenger seat belt buckle switch circuit reads a fault

Q: What does B1771 mean on a Toyota?

B1771. Front passenger seat belt buckle switch circuit reads a fault. Applies to Toyota, Lexus and Scion models that use this code.

Category: Body
Severity: Airbag Light
Applies to: Toyota, Lexus and Scion models that use this code

What does B1771 mean on a Toyota?

B1771. Front passenger seat belt buckle switch circuit reads a fault. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.

Common causes of B1771

Failed right front seat inner belt
Buckle switch harness open or shorted
Poor electrical connection
Failed occupant classification ECU
Low system voltage

How to fix B1771

Disconnect the battery and wait before touching SRS circuits
Confirm the code and check the passenger buckle
Inspect and reseat the buckle switch connectors
Test the buckle switch circuit
Replace the buckle assembly only after tests fail