AutoCodes – RAM – U1009 RAM

U1009 RAM Code - LIN 2 Bus Steering Control Module Electrical Diagnostics

Quick Answer

The Right Steering Wheel Control Switch (Speed Control Switch) includes the cruise control functions. Common causes include Faulty Steering Wheel Control Switch, Steering Wheel Control Switch harness is open or shorted, Steering Wheel Control Switch 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: U1009 RAM indicates LIN 2 Bus Steering Control Module Electrical Diagnostics.
Common causes: Common causes include Faulty Steering Wheel Control Switch, Steering Wheel Control Switch harness is open or shorted, Steering Wheel Control Switch 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.

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Code Popularity 11,935

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 16, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1009 RAM Description

The Right Steering Wheel Control Switch (Speed Control Switch) includes the cruise control functions. Cruise Control Functions are resistor multiplexed and are hard wired inputs to the Steering Angle Sensor (SAS) microprocessor. The switch also contains the circuitry of a Local Interface Network (LIN) slave node, which provides source current for and communicates the switch or sensor states of the Electronic Vehicle Information Center (EVIC) switches, the remote radio switches and the horn switch over the LIN data bus to the SAS, which is also the LIN master node and a gateway to the Controller Area Network (CAN) data bus. This Diagnostic Trouble Code (DTC) will set if there is a loss of LIN Bus communication between the Steering Control Module (SCM) and the Right Steering Wheel Switch (Speed Control Switch).

OBDII Code U1009 RAM - LIN 2 Bus Steering Control Module Electrical Diagnostics - AutoCodes.com — U1009 RAM Code - LIN 2 Bus Steering Control Module Electrical Diagnostics

What does this mean?

What are the Possible Causes of the DTC U1009 RAM?

Faulty Steering Wheel Control Switch
Steering Wheel Control Switch harness is open or shorted
Steering Wheel Control Switch circuit poor electrical connection
Faulty Clockspring

How to Fix the DTC U1009 RAM?

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 U1009 RAM 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U1009 RAM Code

1. What are the common symptoms of OBDII code U1009 RAM titled LIN 2 Bus Steering Control Module Electrical Diagnostics?

- Common symptoms may include issues with steering control, such as loss of power steering functionality, erratic steering behavior, or warning lights on the dashboard related to the steering system.

2. What typically causes the OBDII code U1009 RAM to be triggered in LIN 2 Bus Steering Control Module?

- The code U1009 RAM is usually triggered due to electrical faults within the LIN 2 Bus Steering Control Module, such as wiring issues, faulty connections, or a malfunctioning control module.

3. How can I diagnose the OBDII code U1009 RAM in the LIN 2 Bus Steering Control Module?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the specific fault codes, inspecting the wiring and connections related to the steering control module, and performing electrical diagnostics to identify the root cause of the issue.

4. What are some potential repair tips for resolving the OBDII code U1009 RAM in the LIN 2 Bus Steering Control Module?

- Repair tips may include checking and repairing any damaged wiring or connections, ensuring proper grounding of the control module, resetting the system after repairs, and retesting to confirm the issue has been resolved.

5. Can I drive my vehicle with the OBDII code U1009 RAM related to the LIN 2 Bus Steering Control Module?

- It is not recommended to drive the vehicle with unresolved steering control module issues indicated by the OBDII code U1009 RAM, as it may compromise the safety and functionality of the steering system.

6. How do I reset the OBDII code U1009 RAM in the LIN 2 Bus Steering Control Module after repairs?

- After completing the necessary repairs to address the U1009 RAM code, you can reset the code using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the system memory.

7. Are there any common maintenance practices to prevent the OBDII code U1009 RAM from occurring in the LIN 2 Bus Steering Control Module?

- Regularly inspecting and maintaining the steering system components, such as checking for loose connections, ensuring proper wiring integrity, and addressing any warning signs promptly, can help prevent the occurrence of the U1009 RAM code.

8. Can a DIY enthusiast troubleshoot and repair the OBDII code U1009 RAM in the LIN 2 Bus Steering Control Module?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing electrical issues related to the steering control module may require specialized tools, knowledge, and expertise best handled by a professional mechanic.