B2002 Lexus Code - Open In Seat Belt Motor Right Circuit
Quick Answer
The Seat Belt Control ECU receives information from the master cylinder solenoid (Skid Control ECU) via the Controlled Are Network (CAN) communication line and tightens the seat belt by operating the motor in the Front Seat Outer Belt Assembly Right (RH) or Left (LH). Common causes include Faulty Front Seat Outer Belt Assembly Right (RH), Front Seat Outer Belt Assembly Right (RH) harness is open or shorted, Front Seat Outer Belt Assembly Right (RH) circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B2002 Lexus indicates Open In Seat Belt Motor Right Circuit.
- Common causes
- Common causes include Faulty Front Seat Outer Belt Assembly Right (RH), Front Seat Outer Belt Assembly Right (RH) harness is open or shorted, Front Seat Outer Belt Assembly Right (RH) circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B2002 Lexus Description
What are the Possible Causes of the DTC B2002 Lexus?
- Faulty Front Seat Outer Belt Assembly Right (RH)
- Front Seat Outer Belt Assembly Right (RH) harness is open or shorted
- Front Seat Outer Belt Assembly Right (RH) circuit poor electrical connection
- Faulty Seat Belt Control ECU
How to Fix the DTC B2002 Lexus?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B2002 Lexus code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service
- Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
- Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
- Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
- Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
Frequently Asked Questions about B2002 Lexus Code
1. What are the common symptoms of OBDII code B2002 in a Lexus related to an open in the seat belt motor right circuit?
The common symptoms include the airbag warning light being illuminated on the dashboard and a potential warning chime sounding when driving.
2. What causes the OBDII code B2002 in a Lexus indicating an open in the seat belt motor right circuit?
This code is typically caused by a broken or damaged wiring harness in the seat belt motor right circuit, a faulty seat belt motor, or a poor connection in the circuit.
3. How can I diagnose the OBDII code B2002 in a Lexus for an open in the seat belt motor right circuit?
Diagnosing this issue involves inspecting the wiring harness for any visible damage, checking the seat belt motor for proper function, and using a multimeter to test for continuity in the circuit.
4. Is it safe to drive a Lexus with the OBDII code B2002 indicating an open in the seat belt motor right circuit?
It is not recommended to drive the vehicle with this issue as it may affect the proper functioning of the seat belt system and airbags, compromising safety in the event of a collision.
5. Can I reset the OBDII code B2002 in a Lexus related to an open in the seat belt motor right circuit by disconnecting the battery?
While disconnecting the battery may temporarily clear the code, it is important to address the underlying issue causing the fault code to prevent it from reoccurring.
6. How much does it typically cost to repair the OBDII code B2002 in a Lexus for an open in the seat belt motor right circuit?
The cost of repairing this issue can vary depending on the exact cause of the fault, but it may involve replacing the seat belt motor, repairing the wiring harness, or addressing any connection issues in the circuit.
7. Can I repair the open in the seat belt motor right circuit myself, or should I take my Lexus to a professional mechanic?
Repairing this issue may require advanced knowledge of automotive electrical systems, so it is recommended to consult a professional mechanic or technician with experience in diagnosing and repairing airbag system faults.
8. Will the OBDII code B2002 in a Lexus for an open in the seat belt motor right circuit affect the vehicle's overall performance?
While this issue may not directly impact the vehicle's performance, it is crucial to address it promptly to ensure the proper functioning of the seat belt system and airbags in case of an accident.
9. Are there any preventive measures I can take to avoid encountering the OBDII code B2002 related to an open in the seat belt motor right circuit in my Lexus?
Regularly inspecting the seat belt system for any signs of wear or damage, avoiding excessive pulling or tugging on the seat belt, and addressing any issues promptly can help prevent this fault code from appearing.
10. How long does it typically take to repair the OBDII code B2002 in a Lexus indicating an open in the seat belt motor right circuit?
The repair time can vary depending on the exact cause of the issue, availability of parts, and the expertise of the mechanic, but it may take a few hours to a full day to diagnose and fix the problem.
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