U1101 Scion Code - Lost Communication With Distance Control ECU
Quick Answer
The Seat Belt Control ECU receives signals from the master cylinder solenoid (Skid Control ECU) and the center airbag sensor via the CAN communication line. Common causes include CAN communication system, Faulty Distance Control ECU, Faulty Seat Belt Control ECU. 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
- U1101 Scion indicates Lost Communication With Distance Control ECU.
- Common causes
- Common causes include CAN communication system, Faulty Distance Control ECU, Faulty Seat Belt Control ECU.
- 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 U1101 Scion Description
What are the Possible Causes of the DTC U1101 Scion?
- CAN communication system
- Faulty Distance Control ECU
- Faulty Seat Belt Control ECU
How to Fix the DTC U1101 Scion?
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 U1101 Scion 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 U1101 Scion Code
1. What does OBDII code U1101 on a Scion mean?
Code U1101 indicates a "Lost Communication With Distance Control ECU" error, suggesting a communication breakdown between the vehicle's control modules.
2. What are common symptoms of OBDII code U1101 in a Scion?
Common symptoms include malfunctioning cruise control, inoperative distance control features, and illuminated warning lights on the dashboard.
3. What are possible causes of OBDII code U1101 in a Scion?
Causes can range from damaged wiring or connectors, a faulty Distance Control ECU, issues with the CAN bus system, or a malfunctioning engine control module.
4. How can I diagnose the OBDII code U1101 in my Scion?
Diagnosing code U1101 typically involves checking the wiring and connectors related to the Distance Control ECU, verifying the CAN bus communication, and testing the ECU itself for proper functionality.
5. Can I still drive my Scion with OBDII code U1101 present?
While it may be possible to drive the vehicle with this code present, it is recommended to address the issue promptly to prevent potential safety hazards and ensure proper vehicle functionality.
6. How can I repair OBDII code U1101 in my Scion?
Repairing code U1101 may involve repairing or replacing damaged wiring, connectors, or components related to the Distance Control ECU, as well as addressing any underlying issues with the vehicle's communication systems.
7. Is it possible to clear OBDII code U1101 without fixing the underlying issue?
Clearing the code without addressing the root cause may temporarily remove the warning light, but the issue will likely persist and could lead to further problems down the line.
8. Can a DIY enthusiast fix OBDII code U1101 in a Scion?
Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair code U1101 themselves. However, complex electrical issues may require professional assistance.
9. What should I do if OBDII code U1101 keeps coming back after repair attempts?
If the code persists after repair attempts, it is recommended to recheck the repairs made, perform additional diagnostics, and ensure all related components are functioning correctly.
10. Does fixing OBDII code U1101 require specialized equipment?
Repairing code U1101 may require basic diagnostic tools like a multimeter or OBDII scanner, as well as specialized equipment for more in-depth troubleshooting of the vehicle's communication systems.
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