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Diagnostic Test

  1. DTC IS ACTIVE 
    NOTE: If this DTC sets intermittently, it is possible that the controller is overheating in extremely hot temperatures. This is considered a normal protection operation. No repair is necessary.
    NOTE: Low system voltage can cause excessive current draw in very hot and cold ambient temperatures. Make sure the battery can pass a load test before continuing. Review Freeze Frame information to determine the ambient temperature when the DTC set.

    Start the engine and allow it to reach normal operating temperature.

    WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.

    With the scan tool, select View DTCs.

    Is the status Active for this DTC? 

    Yes 

    1. Go to  2.

    No 

    1. Refer to the *CHECKING FOR AN INTERMITTENT CONDITION Diagnostic Procedure.
  2. THROTTLE PLATE STICKING OR OBSTRUCTED 

    Turn the ignition off.

    Remove the air cleaner assembly.

    Check for any signs of a foreign material (ice or dirt) on the throttle plate or in the throttle bore that can cause the throttle plate to stick.

    Were any problems found? 

    Yes 

    1. Remove the debris if possible or replace the Throttle Body Assembly. Disconnect the battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and perform the ETC Relearn function.
    2. Perform PCM VERIFICATION TEST .

    No 

    1. Go to  3.
  3. THROTTLE PLATE NOT WITHIN DESIRED POSITION 

    Start the engine and allow it to reach normal operating temperature.

    With a scan tool, monitor the Actual Throttle Position and Desired Throttle Position.

    Is the Actual Throttle Position within 2 degrees of the Desired Throttle Position? 

    Yes 

    1. Go to  4.

    No 

    1. Replace the Throttle Body Assembly. Disconnect the battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and perform the ETC Relearn function.
    2. Perform PCM VERIFICATION TEST .
  4. ELECTRONIC THROTTLE CONTROL MOTOR 

    Turn the ignition on.

    With a scan tool, actuate the Electronic Throttle Control Motor and observe the movement of the throttle blade.

    NOTE: It may be necessary to use a mirror to see the throttle blade.
    NOTE: Make sure the motion of the throttle blade is smooth and that it opens and closes.

    Did the ETC motor operate properly? 

    Yes 

    1. Refer to the *CHECKING FOR AN INTERMITTENT CONDITION Diagnostic Procedure.

    No 

    1. Replace the Throttle Body Assembly. Disconnect the battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and perform the ETC Relearn function.
    2. Perform PCM VERIFICATION TEST .
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