LEMON Manuals: Even more car manuals for everyone
Home >> Hyundai >> 2008 >> Accent SE, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle System (A4AF3) >> Automatic Transaxle System >> DTC P0731 Gear 1 Incorrect Ratio >> Monitor SCANTOOL Data

Monitor SCANTOOL Data

  1. Connect scantool to data link connector(DLC).
  2. Engine "ON".
  3. Monitor the "ENGINE SPEED, INPUT SPEED SENSOR(PG-A), OUTPUT SPEED SENSOR(PG-B), GEAR POSITION" parameter on the scan tool.
  4. Perform the "STALL TEST" at gear position "1"

    Specification: 2400 ~ 2800 engine rpm

    Fig 1: Scan Tool Display - Engine Speed
    G04802096Courtesy of HYUNDAI MOTOR CO.

    OPERATING ELEMENT OF EACH SHIFTING RANGE 

    GEAR SHIFTING REFERENCE CHART

    Selector lever position Overdrive control switch Shifting gear Engine start Parking Mechanism Clutch Brake
    C1 C2 C3 OWC B1 B2
    P - Neutral Possible O            
    R - Reverse     O          
    N - Neutral Possible             O
    D ON 1st       O   O    
    2nd       O     O  
    3rd     O O O      
    4th         O   O  
    D OFF 1st       O   O    
    2nd       O     O  
    3rd     O O O      
    2 - 1st       O   O    
    2nd       O     O  
    L - 1st       O       O

    C1: Front clutch

    C2: Rear clutch

    C3: End clutch

    OWC: One way clutch

    B1: Kickdown brake

    B2: Low & reverse brake

    Stall test procedure in D1 and reason 

    Procedure

    1. Warm up the engine
    2. Fully depress the brake pedal, then place the transaxle gear lever into "D" range. Press and hold the accelerator pedal to the floor for no more than eight seconds while observing the engine, input speed, and output speed RPM value.

    * The slippage of 1st gear operating parts can be detected by stall test in D1.

    Reason for stall test

    1. If there is no mechanical defaults in A/T, all slippage occurs in torque converter.
    2. Therefore, engine revolution is output, but input and output speed revolution must be "zero" due to wheel's lock.
    3. If 1st gear operating part has faults, input speed revolution will be out of specification.
    4. If output speed revolution is output. It means that the foot brake force is not applied fully. Remeasuring is required.
  5. Is "STALL TEST" within specification?

    YES  : --> Go to "W/Harness inspection" procedure.

    NO  : --> Go to "COMPONENT INSPECTION " procedure.

CAUTION:
  • Do not let anybody stand in front of or behind the vehicle while this test is being carried out. 
  • Check the A/T fluid level and temperature and the engine coolant temperature. 
    • Fluid level: At the hot mark on the oil level gauge. 
    • Fluid temperature: 176 °F~ 212 °F (80 ~ 100 °C). 
    • Engine coolant temperature: 176 °F~ 212 °F (80 ~ 100 °C). 
  • Chock both rear wheel(left and right). 
  • Pull the parking brake lever on with the brake pedal fully depressed. 
  • The throttle should not be left fully open for more than eight seconds. 
  • If carrying out the stall test two or more times, move the select lever to the "N" position and run the engine at 1,000 rpm to let the A/T fluid cool down before carrying out subsequent tests. 

* Perform stall test on "L" range If the result of stall test on "D" range is out of specifications.

"One Way Clutch" is faulty If the result of stall test on "L" range is within specifications.

scientia non olet · About LEMON Manuals