When your Chevrolet vehicle is showing a P1689 code, it indicates that the traction control delivered torque output circuit is not functioning properly. This code is triggered when an improper voltage level is detected on the output circuit for the traction control delivered torque output circuit, and it lasts for at least 30 seconds. To diagnose the root cause of this code, it is important to be aware of the potential causes and solutions. Common causes of the P1689 code can include a poor connection at the PCM, damaged harness, or related service bulletins. Solutions for the P1689 code may involve inspecting wiring harnesses for backed out terminals, inspecting for improper mating, broken locks, and more.
P1689 Code Causes and Solutions
| Cause | Solution |
|---|---|
| Poor connection at the PCM | Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection. |
| Damaged harness | Inspect for improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection. |
| Related Service Bulletins | Refer to PIP5094. |
| Incorrect voltage levels | Replace the traction control delivered torque output circuit. |
Poor Connection at the PCM
When the P1689 code is triggered, it’s important to inspect the wiring harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection. If any of these issues are present, then it’s necessary to repair or replace the wiring harness.
Damaged Harness
It’s also important to inspect the wiring harness for improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection. If any of these issues are present, then it’s necessary to repair or replace the wiring harness.
Related Service Bulletins
When dealing with the P1689 code, it’s essential to refer to the service bulletin, PIP5094, which can be found here. This service bulletin provides important information regarding the diagnosis and repair of the P1689 code.
Incorrect Voltage Levels
If the P1689 code is triggered due to incorrect voltage levels, then it’s necessary to replace the traction control delivered torque output circuit. This will ensure that the voltage levels are within the proper range and that the code does not occur again.
Conclusion
When a Chevrolet vehicle is showing a P1689 code, it is important to be aware of the potential causes and solutions. Common causes of this code include a poor connection at the PCM, a damaged harness, and related service bulletins. Solutions for the P1689 code may involve inspecting wiring harnesses, replacing the traction control delivered torque output circuit, and referring to the service bulletin, PIP5094. As such, if your Chevrolet P1689 Code is triggered, it’s important to follow the necessary steps to diagnose and repair the code.
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