LEMON Manuals: Even more car manuals for everyone
Home >> Mitsubishi >> 2010 >> Eclipse Spyder GS, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Automatic Transaxle On-Vehicle Service) >> Automatic Transaxle Diagnosis >> Symptom Procedures >> INSPECTION PROCEDURE 10: Early or Late Shifting in All Gears >> Diagnosis

INSPECTION PROCEDURE 10: Early or Late Shifting in All Gears: Diagnosis

WARNING: This page is about a different variant/trim than selected.

Required Special Tools: 

  1. STEP 1. Using scan tool MB991958, check data list item 6: Output Shaft Speed Sensor. 
    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. Connect scan tool MB991958 to the data link connector.
    2. Start the engine.
    3. Set scan tool MB991958 to the data reading mode.
      • Item 6: Output Shaft Speed Sensor.
        • When driving at constant speed of 50km/h (31mph), the display should be "1,500 - 1,800 r/min" (Gear range: 3rd gear <4A/T>).
        • When driving at constant speed of 60km/h (37mph), the display should be "1,400 - 1,700 r/min" (Gear range: 4th gear <5A/T>).
    4. Turn the ignition switch to the "LOCK" (OFF) position.
      Fig 1: Connecting Special Tool MB991910 To Data Link Connector
      G04230562Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

      Q: Is the sensor operating properly? 

      1. YES:  Go to Step 2.
      2. NO:  Refer to , DTC P1767 (P0720): OUTPUT SHAFT SPEED SENSOR SYSTEM .
  2. STEP 2. Using scan tool MB991958, check data list item 2: TP Sensor. 
    1. Connect scan tool MB991958 to the data link connector.
    2. Turn the ignition switch to the "ON" position.
    3. Set scan tool MB991958 to the data reading mode.
      • Item 2: TP Sensor.
        • With the throttle valve in idle position, voltage should measure between 300 and 700 mV.
        • With the throttle valve in full-open position, voltage should measure 4,000 mV or more.
    4. Turn the ignition switch to the "LOCK" (OFF) position.

      Q: Is the measured voltage between 300 and 700 mV at idle, and 4,000 mV or more at the full-open position? 

      1. YES:  Go to Step 3.
      2. NO:  Check the TP sensor. Refer to DTCS P0122 , DTC P0123: TP SENSOR SYSTEM for 2.4L Engine or Refer to GROUP 13B <3.8L ENGINE>, DIAGNOSTIC TROUBLE CODE PROCEDURES - DTCS P0122 , DTC P0123: TP SENSOR SYSTEM for 3.8L Engine . Then check the symptom.
        Fig 2: Connecting Special Tool MB991910 To Data Link Connector
        G04230562Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  3. STEP 3. Using scan tool MB991958, check data list. 
    1. Connect scan tool MB991958 to the data link connector.
    2. Start the engine.
    3. Set scan tool MB991958 to the data reading mode for following items.
      1. Item 12: Low-Reverse Solenoid Valve Duty Percent
      2. Item 13: Underdrive Solenoid Valve Duty Percent
      3. Item 14: Second Solenoid Valve Duty Percent
      4. Item 15: Overdrive Solenoid Valve Duty Percent
      5. Item 16: Reduction Solenoid Valve Duty Percent <5A/T>
        • Check that the values shown below are displayed when each data list item is entered.
          Fig 3: Connecting Special Tool MB991910 To Data Link Connector
          G04230562Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

          <4A/T> 

          DRIVING CONDITION

          DRIVING CONDITION DATA LIST ITEM
          12 13 14 15
          Driving at constant speed of 10 km/h (6.2 mph) in 1st gear 0% 0% 100% 100%
          Driving at constant speed of 30 km/h (19 mph) in 2nd gear 100% 0% 0% 100%
          Driving at constant speed of 50 km/h (31 mph) in 3rd gear 100% 0% 100% 0%
          Driving at constant speed of 50 km/h (31 mph) in 4th gear 100% 100% 0% 0%

          <5A/T> 

          DRIVING CONDITION

          DRIVING CONDITION DATA LIST ITEM
          12 13 14 15 16
          Driving at constant speed of 10 km/h (6.2 mph) in 1st gear 0% 0% 100% 100% 0%
          Driving at constant speed of 30 km/h (19 mph) in 2nd gear 100% 0% 0% 100% 0%
          Driving at constant speed of 50 km/h (31 mph) in 3rd gear 100% 0% 100% 0% 0%
          Driving at constant speed of 50 km/h (31 mph) in 4th gear 0% 0% 100% 0% 100%
          Driving at constant speed of 70 km/h (36 mph) in 5th gear 0% 100% 0% 0% 100%
    4. Turn the ignition switch to the "LOCK" (OFF) position.

      Q: Are the solenoid valves operating properly? 

      1. YES:  Go to Step 4.
      2. NO:  Go to Step  6.
  4. STEP 4. Adjust the line pressure. 

    Adjust the line pressure. Refer to , LINE PRESSURE ADJUSTMENT . Then check the symptom.

    Q: Is the symptom eliminated? 

    1. YES:  The procedure is complete.
    2. NO:  Go to Step 5.
  5. STEP 5. Disassemble and clean the valve body. 

    Check the O-ring installation bolts for looseness and the valve body for damage. Repair or replace the faulty parts. Refer to VALVE BODY <4A/T> or VALVE BODY <5A/T>.

    Replace the valve body assembly if the damages are thought to be irreparable. Then check the symptom.

    Q: Is the symptom eliminated? 

    1. YES:  The procedure is complete.
    2. NO:  Go to Step  7.
      Fig 4: Identifying Valve Body Assembly
      G04230985Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  6. STEP 6. Replace each solenoid valve. 

    Replace the faulty solenoid valve with a new one.

    Q: Is the symptom eliminated? 

    1. YES:  The procedure is complete.
    2. NO:  Go to Step 7.
      Fig 5: Identifying Solenoid Valve
      G05102519Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  7. STEP 7. Replace the PCM. 

    When the PCM is replaced, register the encrypted code. Refer to ENCRYPTED CODE REGISTRATION CRITERIA TABLE .

    Q: Is the symptom eliminated? 

    1. YES:  The procedure is complete.
    2. NO:  Start over at Step  1.
scientia non olet · About LEMON Manuals