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C039E - Actuator Position Sensor

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Transfer Case Motor *
  • Transfer Case Motor harness is open or shorted
  • Transfer Case Motor circuit poor electrical connection
  • Tech notes

    - C039E 03 Range Actuator Position Sensor Direction Signal Circuit Low Voltage
    - C039E 07 Range Actuator Position Sensor Direction Signal Circuit High Voltage

    * The Range Actuator Position Sensor is an integral part of the Transfer Case Motor and cannot be replaced independently.

    Possible symptoms

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)
  • C039e Description

    The transfer case control module receives input from the range actuator position sensor and the transfer case range position sensor. Both sensors send this information as voltage signals which are converted to degrees and rotational direction by the transfer case control module software. If the two sensors disagree by greater than a predetermined amount the DTC will set.

    The range actuator position sensor receives an 8 volt reference signal from the transfer case control module. In return the range actuator position sensor sends the transfer case control module a variable pulse width modulated signal indicating the position of the transfer case and a range actuator position direction signal. The range actuator position sensor, inside the A16 transfer case motor, also known as the transfer case range actuator, works in conjunction with the range position sensor to confirm transfer case position. The range actuator position sensor is more sensitive than the transfer case range position sensor and is able to indicate to the transfer case control module the exact position of the transfer case between range changes. It is also able to show how much clutch activation is being commanded at any time.

    The transfer case range position sensor, also known as the transfer case two/four wheel drive actuator position sensor, receives a 5 volt reference signal from the K69 transfer case control module and sends back a continuously variable pulse width modulated signal to the K69 transfer case control module. This continuously variable signal indicates the position of the transfer case actuator.

    The range actuator position sensor is more sensitive than the transfer case range position sensor, but needs to reference the transfer case range position sensor value at ignition ON and mode changes. The transfer case range position sensor is an absolute sensor. The K69 transfer case control module synchronizes the range actuator position sensor with the transfer case range position sensor at ignition ON and mode changes.

    The range actuator position sensor is an integral part of the A16 Transfer Case Motor and cannot be replaced independently.

    The transfer case range position sensor, also known as the B227 gear position sensor, is an independently replaceable part.

    OBDII Code C039e - Actuator Position Sensor - Autoodes.com

    C039E Information for specific makes

  • C039E BUICK Actuator Position Sensor
  • C039E CADILLAC Actuator Position Sensor
  • C039E CHEVROLET Actuator Position Sensor
  • C039E GMC Actuator Position Sensor
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    Repair Importance Level: 3
     
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    Repair Difficulty Level: 3
     
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