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Home >> Mazda >> 2015 >> 5 Touring >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle >> Mechanical System Test >> Stall Test
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Stall Test

  1. Prepare for the mechanical system test. (See MECHANICAL SYSTEM TEST PREPARATION .)
  2. Firmly apply the parking brake and set the wheel blocks to the front and rear wheels.
  3. Start the engine.
  4. Measure the stall speed in the D position.
    1. Strongly depress the brake pedal with the left foot.
    2. Shift the selector lever to the D position.
      CAUTION:
      • To prevent damage to the transaxle, measure the stall speed (Step ( 5)-( 6)) within 5 s.
    3. Slowly depress the accelerator pedal with the right foot all the way down.
    4. Read the engine speed quickly when the speed is stabilized, and remove the right foot from the accelerator pedal.
    5. Shift the selector lever to the N position and idle for 1 min or more.
  5. Measure the stall speed in each position in the same procedure.
    • If there is any malfunction, one of the following malfunctions may have occurred:
    Condition Possible cause
    Higher than specification High in R, D, and M (1GR, 2GR) positions Line pressure is low Oil pump wear
    ATF leakage from oil pump, control valve, and transaxle case
    Pressure regulator valve sticking
    Converter relief valve sticking
    Pressure control solenoid A operation malfunction
    Forward clutch slippage -
    One-way clutch No. 1 damage -
    2-4 brake band slippage, and damage of one-way clutch No. 1 -
    Low and reverse brake slippage, and damage of one-way clutch No. 1 -
    Perform road test to determine whether problem is in reverse clutch or low and reverse brake
    • Engine brake operates in M (1GR) position
      • Reverse clutch slippage
    • Engine braking does not operate in M (1GR) position
      • Low and reverse brake slippage
    -
    Less than specification Lower in R, D, and M (1GR, 2GR) positions Engine malfunction
    One-way clutch damage in torque converter
    STALL SPEED

    Measurement conditions Specification (RPM)
    R position 2, 400-3, 000
    D position
    M position