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Home >> Mazda >> 1996 >> 626 DX, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 2.0L A/T >> Additional System Functions >> OBD-II Drive Cycle
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OBD-II Drive Cycle

NOTE: Perform this procedure only when instructed to do so.
  1. Start and warm engine to engine coolant temperature of 180°F (82°C). Drive vehicle or allow to idle for 4 minutes. If driven, stop vehicle. After vehicle is driven or idled for 4 minutes, with vehicle in Drive, allow to idle for additional 40 seconds.
  2. Open throttle one quarter to half-way and increase speed to 40 MPH for 10 seconds. Drive vehicle at a steady speed of 40 MPH for 30 seconds. Stop vehicle. With vehicle in Drive, allow to idle for 40 seconds. Drive vehicle at 35 MPH for 4 minutes. Stop vehicle and allow to idle for 30 seconds.
  3. Drive vehicle at 30 MPH for 6 minutes. Stop vehicle and allow to idle for 30 seconds. Drive vehicle at 25-40 MPH for 3 minutes while observing following conditions. Stop and allow to idle for 10 seconds at least 5 times, throttle opening is one quarter to half-way when accelerating from idle, and shift between 3 different speeds while driving at 25-40 MPH.
  4. Drive vehicle at a constant speed of 25-30 MPH for one minute. Within 8 seconds, accelerate to 55-60 MPH. Drive vehicle at a constant speed of 55-60 MPH for 2 minutes. With ignition on (vehicle idling or engine off), check for Continuous Memory codes.
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