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Home >> Mitsubishi >> 2014 >> Lancer SE >> Repair and Diagnosis >> External Pages >> Different car >> Section 54 (Adaptive Cruise Control System (Acc) & Emission Control (MFI) - With Diagnostics) >> Emission Control (MFI) >> Exhaust Gas RECIRCULATION (EGR) System <3.0L Engine> >> EGR Valve (Stepper Motor) Check >> Operation Check

Operation Check

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the EGR valve.
  2. Connect special tool MB991658 to the EGR valve.
    Fig 1: Identifying EGR Valve Connector Terminals
    G00539953Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  3. Connect the battery positive (+) terminal to terminal No. 2.
    CAUTION: Connecting battery voltage to the EGR valve for a long time could damage the coil.
  4. Connect terminals 1 and 3 to the negative (-) terminal of the battery, in order to test whether the stepper motor vibrates (with a slight shudder), indicating that the stepper motor is operating.
    Fig 2: Connecting EGR Valve To Battery
    G00539954Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  5. Connect the battery positive (+) terminal to terminal No. 5.
    CAUTION: Connecting battery voltage to the EGR valve for a long time could damage the coil.
    Fig 3: Connecting EGR Valve To Battery
    G00539955Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  6. Connect terminals 4 and 6 to the negative (-) terminal of the battery, in order to test whether the stepper motor vibrates (with a slight shudder), indicating that the stepper motor is operating.
  7. If vibrations can be felt as a result of the test, the stepper motor is determined to be normal.
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