Technical Description of OBD-II Trouble Code
Circuit for Controlling the Throttle Actuator Control Lamp
What does that signify?
This is a generic diagnostic trouble code (DTC) that is applicable to many OBD-II vehicles (1996-newer). This includes vehicles from Chevrolet, Chrysler, Dodge, Ford, GMC, Hyundai, Kia, Honda, Toyota, etc. Although it is a generic code, the specific repair steps may vary depending on the year, make, model, and powertrain configuration.
A stored code P069F indicates that the powertrain control module (PCM) has detected a malfunction in the circuit for controlling the throttle actuator control lamp.
The throttle actuator control lamp is an integrated part of the instrument panel. Its main purpose is to alert the driver when the throttle actuator control system experiences a malfunction (when it is illuminated). The throttle actuator control system is responsible for opening and closing the throttle plate to increase or decrease engine RPM as required.
Whenever the ignition is turned on, the PCM typically monitors the continuity of the circuit for controlling the throttle actuator control lamp. The throttle actuator control system uses input signals from the vehicle throttle position sensor (TPS) to activate the throttle plate and regulate the appropriate amount of ambient air entering the engine. The PCM supplies electronic servo motors with the necessary voltage signal to open or close the throttle plate as needed.
Each time the ignition is turned on and the PCM is powered, multiple controller self-tests are performed. In addition to running internal controller self-tests, the controller area network (CAN) transmits serial data from each individual module to ensure proper interfacing of on-board controllers.
If a problem is detected in monitoring the circuit for controlling the throttle actuator control lamp, a code P069F will be stored and a malfunction indicator lamp (MIL) may illuminate.
What is the severity of this DTC?
A stored code P069F (with illumination of the throttle actuator control lamp) will likely result in a loss of throttle control. This code should be considered severe and diagnosed as soon as possible.
What are some of the symptoms of the code?
Symptoms of a P069F trouble code may include:
What are some of the common causes of the code?
Possible causes for this code may include:
What are some P069F troubleshooting steps?
To diagnose a code P069F, you will need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable source of vehicle information.
Refer to your vehicle information source for technical service bulletins (TSB) that match the stored code, vehicle (year, make, model, and engine), and exhibited symptoms. If you find the appropriate TSB, it may provide helpful diagnostic information.
Start by connecting the scanner to the vehicle diagnostic port and retrieving all stored codes and freeze frame data. It is advisable to write down this information in case the code proves to be intermittent. After recording all relevant information, clear the codes and test drive the vehicle until the code is reset or the PCM enters readiness mode.
If the PCM enters readiness mode, the code is intermittent and diagnosing it will be more challenging. The condition that caused the P069F to be stored may need to worsen before an accurate diagnosis can be made. If the code is reset, continue with the diagnosis.
Use your source of vehicle information to obtain connector face views, connector pin-out charts, component locators, wiring diagrams, and diagnostic flow charts related to the code and the specific vehicle.
Check if there is battery voltage on the circuit for controlling the throttle actuator control warning lamp by referring to the appropriate wiring diagram and using your DVOM. If there is no voltage, check the system fuses and relays and replace any defective parts as necessary. If voltage is present at the throttle actuator control warning lamp, suspect a defective throttle actuator control warning lamp bulb.
If the throttle actuator control warning lamp bulb is functioning properly and the P069F continues to reset, use the DVOM to test the power supply fuses and relays for the controller. Replace any blown fuses as necessary. Fuses should be tested with the circuit loaded.
If all fuses and relays appear to be functioning properly, visually inspect the wiring and harnesses related to the controller. Also check the chassis and engine ground junctions. Use your vehicle information source to find the ground locations for the relevant circuits.
Visually inspect the system controllers for signs of water, heat, or collision damage. Any damaged controller, especially due to water, should be considered defective.
If the controller power and ground circuits are intact, suspect a defective controller or a controller programming error. Controller replacement will require reprogramming. In some cases, reprogrammed controllers may be available through aftermarket sources. Other vehicles/controllers may require on-board reprogramming that can only be done by a dealership or another qualified source.
