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Home >> Mazda >> 2006 >> Tribute s, 4WD >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Symptom Troubleshooting [Transaxle] >> Shift Point Road Test

Shift Point Road Test

This test verifies that the shift control system is operating correctly.

  1. Bring the engine and transaxle up to normal operating temperature.
  2. Operate the vehicle with the transaxle range selector lever in the D position.
  3. Apply minimum throttle and observe the speeds at which upshift occurs and torque converter engages.

    See SHIFT SPEEDS CHART  (also see SPECIFICATIONS ).

    CAUTION:
    • Do not exceed posted speed limits when carrying out this test.
    SHIFT SPEEDS CHART

    Throttle Position OD Position Shift KPH MPH
    Closed 4-3 58 36
    3-2 29 18
    2-1 11 7
    Minimum monitor PID TP volt 1.25 1-2 21-26 13-16
    2-3 37-43 23-27
    3-4 67-74 42-46
    Wide Open Throttle 1-2 72 45
    2-3 132 82
    3-4 - -
  4. Coasting 2-1 downshift procedure: accelerate the vehicle from a stop to 19-24 km/h (12-15 mph). Release the accelerator, and coast down or lightly brake the vehicle. The coast downshift may be nearly imperceptible to the driver.
  5. With the vehicle in D (fourth gear), press the transaxle control switch. The transaxle should downshift to third gear. Remove foot from the accelerator pedal; engine braking should occur. The torque converter clutch should disengage and then reapply.
  6. Press the accelerator pedal to floor. The transaxle should shift from third to second gear, or third to first, depending on vehicle speed.
  7. With vehicle in D range above 80 km/h (50 mph) and less than half throttle, move the transaxle range selector lever from D range to manual 2 range and remove foot from the accelerator pedal. The transaxle should immediately downshift into second gear. With the vehicle remaining in manual 2 range, move the transaxle range selector lever into manual 1 range and release the accelerator pedal. The transaxle should downshift into first gear at speeds below 48-56 km/h (30-35 mph).
    NOTE:
    • Shift speed ranges are approximate for all applications. For specific applications (engine, axle ratio and application) see the SHIFT SPEEDS CHART  and SPECIFICATIONS .
  8. If the transaxle fails to upshift/downshift or the torque converter does not apply and release, see DIAGNOSIS BY SYMPTOM  for possible causes.