What causes B1243 on a Toyota?

Open or short in the GSW input circuit Loose or corroded connector at the main body ECU Damaged harness on the GSW input circuit Failed main body ECU Low system voltage

How do I fix B1243 on a Toyota?

Confirm the code and read freeze frame data Check battery voltage and the charging system Inspect and reseat the main body ECU connector Test the GSW input circuit for opens and shorts Replace the main body ECU only after the circuit tests fail

B1243 GSW terminal circuit malfunction. Open or short in the collision door lock release input

Q: What does B1243 mean on a Toyota?

B1243. GSW terminal circuit malfunction. Open or short in the collision door lock release input. Applies to Toyota, Lexus and Scion models that use this code.

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

What does B1243 mean on a Toyota?

B1243. GSW terminal circuit malfunction. Open or short in the collision door lock release input. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.

Common causes of B1243

Open or short in the GSW input circuit
Loose or corroded connector at the main body ECU
Damaged harness on the GSW input circuit
Failed main body ECU
Low system voltage

How to fix B1243

Confirm the code and read freeze frame data
Check battery voltage and the charging system
Inspect and reseat the main body ECU connector
Test the GSW input circuit for opens and shorts
Replace the main body ECU only after the circuit tests fail