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Home >> Mitsubishi >> 2004 >> Galant ES >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System >> Engine Control >> Engine Control System Diagnosis >> Symptom Procedures >> INSPECTION PROCEDURE 2: Accelerator Pedal Operation Not Smooth (Over Acceleration) >> Diagnosis
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INSPECTION PROCEDURE 2: Accelerator Pedal Operation Not Smooth (Over Acceleration): Diagnosis

Required Special Tool: 

  1. STEP 1. Check if the accelerator pedal and the accelerator pedal are installed correctly. 

    Q: Are the accelerator pedal and the accelerator pedal installed correctly? 

    1. YES:  Go to Step 2.
    2. NO:  Replace and reinstall the accelerator pedal. Refer to ACCELERATOR CABLE AND PEDAL . Go to  Step 3.
  2. STEP 2. Using scan tool MB991958, read the diagnostic trouble code (DTC). 
    CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
    1. Ensure that the ignition switch is at the "LOCK" (OFF) position.
    2. Start up the personal computer.
    3. Connect special tool MB991827 to special tool MB991824 and the personal computer.
    4. Connect special tool MB991910 to special tool MB991824.
    5. Connect special tool MB991910 to the data link connector.
    6. Turn the power switch of special tool MB991824 to the "ON" position.
      NOTE: When special tool MB991824 is energized, special tool MB991824 indicator light will be illuminated in a green color.
    7. Start the MUT-III system on the personal computer.
    8. Turn the ignition switch to the "ON" position.
    9. Check for MFI system diagnostic trouble code. Refer to MFI DIAGNOSISMULTIPORT FUEL INJECTION (MFI) DIAGNOSIS - 2.4L or MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS - 3.8L .
    10. Turn the ignition switch to the "LOCK" (OFF) position, and then remove scan tool MB991958 in the reverse order of installation.
      Fig 1: Connecting Special Tool Mb991910 To Data Link Connector
      G00944196Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

    Q: Is any DTC set? 

    1. YES:  Refer to DIAGNOSTIC TROUBLE CODE CHARTMULTIPORT FUEL INJECTION (MFI) DIAGNOSIS - 2.4L or MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS - 3.8L .
    2. NO:  Go to Step 3.
  3. STEP 3. Retest the system. 

    Q: Does the accelerator pedal work normally? 

    1. YES:  The procedure is complete.
    2. NO:  Return to Step 1.
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