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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (3.6L - DTCS P2135 To U1418) >> Diagnosis And Testing >> P2299-Brake Pedal Position/Accelerator Pedal Position Incompatible >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.
  1. DTC INFORMATION 
    NOTE:

    If a pedal assembly becomes mechanically stuck the voltage output will stay fixed, if this is also followed by a long application of the brakes this code will set.

    NOTE:

    When this code sets the pedal position in the PCM software will ramp to idle. If the Pedal voltage changes or the brake pedal is released, the pedal position in the PCM software will ramp up to the pedal position and the ETC light will go out.

    1. With the scan tool, read DTCs and record the related Freeze Frame data.
      NOTE:

      The most likely cause of this DTC is caused by the customer driving with one foot on the Accelerator pedal and the other resting on the Brake Pedal.

    2. Ask the driver of the vehicle if these conditions apply to their driving habits.

      Are the listed conditions part of the customers driving habits?

      Yes 

      • Advise the customer of what caused the DTC. This is normal operation of a ETC equipped vehicle because of safety issues.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to .

      No 

      • Go To  2
  2. BRAKE SWITCH OPERATION 
    1. With the scan tool, read the status of both Brake Switches while pressing and releasing the Brake Pedal.

      Does the scan tool display the Pressed and Released while pressing and releasing the Pedal?

      Yes 

      • Go To  3

      No 

      • Check the Brake Switch for proper installation and adjustment. Check the related circuits for opens and shorts using the appropriate wiring diagram. If no problems are found, replace the Brake Switch. Refer to SWITCH, STOP LAMP , REMOVAL .
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to .
  3. APP SENSOR SWEEP 
    NOTE:

    Check for any obstructions that may hold the Accelerator Pedal partially pressed.

    1. Turn the ignition on.
    2. With the scan tool, monitor both APP Sensor voltage readings.
    3. Slowly press the accelerator pedal from idle until it reaches the end stop near the floor.
    4. APP Sensor 1 voltage should start at approximately 0.45 volts and increase to approximately 4.6 volts with a smooth transition.
    5. APP Sensor 2 voltage should start at approximately 0.22 volts and increase to approximately 2.31 volts with a smooth transition.

      Does the voltage for the appropriate sensor follow the list specification?

      Yes 

      • Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to .

      No 

      • Check the Signal and Return circuits for opens and shorts. If no problems are found, Replace the APP Sensor in accordance with the Service Information. Refer to PEDAL, ACCELERATOR , REMOVAL . After installation is complete, with a scan tool select the ETC RELEARN function to relearn the APP Sensor values.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to .
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