C1179 – OBD-II DTC

OBD-II DTC C1179 – Speed Control Actuator Assembly Cable Slack Failure

DTC C1179 meaning

DTC C1179 refers to a diagnostic trouble code indicating a failure in the speed control actuator assembly cable slack. This code is triggered when the vehicle’s onboard diagnostic system detects that the cable connected to the speed control actuator has excessive slack, which can affect the proper functioning of the cruise control system.

DTC C1179 symptoms

Common symptoms associated with DTC C1179 may include:

• Inoperative cruise control system
• Erratic or inconsistent speed control
• Warning lights illuminated on the dashboard
• Unusual noises from the speed control actuator

DTC C1179 causes

Several factors can lead to the triggering of DTC C1179, including:

• Worn or damaged speed control actuator cable
• Improper installation of the speed control actuator
• Corrosion or poor connections in the actuator wiring
• Mechanical binding or obstruction in the actuator assembly

DTC C1179 seriousness

DTC C1179 is considered a moderate to serious issue. While it may not immediately affect the vehicle’s ability to operate, it can lead to a loss of cruise control functionality, which can be a safety concern during long drives. It is advisable to address this issue promptly to ensure safe driving conditions.

How to diagnose DTC C1179

To diagnose DTC C1179, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the C1179 code.
2. Inspect the speed control actuator cable for visible damage or excessive slack.
3. Check the connections and wiring for corrosion or loose connections.
4. Test the speed control actuator for proper operation using a multimeter.
5. Clear the code and perform a road test to see if the code reappears.

How to fix DTC C1179 step-by-step instructions

To fix DTC C1179, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety.
2. Inspect and replace the speed control actuator cable if it is damaged or worn.
3. Ensure that the speed control actuator is properly installed and aligned.
4. Clean any corrosion from the actuator connections and ensure they are secure.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Perform a road test to verify that the cruise control system is functioning correctly.

How to erase DTC C1179

To erase DTC C1179, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the vehicle’s ignition without starting the engine.
3. Navigate to the “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the vehicle to ensure the code does not reappear.

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