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Home >> Mitsubishi >> 2004 >> Endeavor LS, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Emission Control System >> Exhaust Gas RECIRCULATION (EGR) System >> Operation Check
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Operation Check

  1. Remove the EGR valve.
  2. Connect special tool MB991658 to the EGR valve.
    Fig 1: Identifying EGR Valve
    G00854890Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  3. Connect the positive (+) terminal the battery to terminal No. 2.
    CAUTION: Connecting battery voltage to the EGR valve for a long term 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.
  5. Connect the positive (+) terminal the battery to terminal No. 5.
    CAUTION: Connecting battery voltage to the EGR valve for a long term could damage the coil.
    Fig 2: Connecting Terminals Of Battery
    G00854891Courtesy 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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