B1801Driver airbag firing circuit: open circuit

• Toyota/Lexus code · Airbag (SRS)
• Lights a warning lamp

How the car detects it

The firing circuit for the driver airbag in the steering wheel is open. While an airbag fault is stored, the affected airbag or pretensioner may not deploy in a crash. Have it repaired before relying on it. Never probe airbag connectors with a meter: that can fire the airbag.

What you may notice

• SRS (airbag) warning light

Likely causes

• PossibleSpiral cable (clock spring) behind the steering wheel
• PossibleConnector at the steering wheel airbag
• RareDriver airbag or airbag control unit

Sources

• share.qclt.com › 043005.pdf
• purefjcruiser.com › 034005.pdf
• toyota-club.net › be_srs.htm
• toyota-club.net › be_srs_rav4.htm

Backed by at least two independent sources.

From Obdaryn's Toyota/Lexus pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.