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On-Vehicle Inspection: Procedure

  1. MECHANICAL SYSTEM TEST PREPARATION 
    1. Apply the parking brake firmly, and set the wheel blocks for both the front and rear wheels.
    2. Inspect the engine coolant level.

      Refer to INSPECTION

    3. Inspect the engine oil level.

      Refer to INSPECTION

    4. Inspect the ATF level.

      Refer to INSPECTION

    5. Inspect the ignition timing.

      Refer to INSPECTION

    6. Inspect the idle speed.
    7. Verify that no DTCs are stored.
  2. TEST LINE PRESSURE 
    1. Perform the mechanical system test preparation.

      Refer to ON-VEHICLE INSPECTION 

    2. Remove the front under cover No. 2.

      Refer to REMOVAL

    3. Disconnect the wiring harness clip from the harness bracket.
      GTY490905Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Harness Bracket
      *b Wiring Harness Clip
    4. Remove the splash shield. (LH)

      Refer to REMOVAL

    5. Remove the harness bracket installation bolts from the transaxle and set it aside.
      GTY483261Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Bolt
      *b Harness Bracket
    6. Remove the pressure detection square head plug.
      GTY486634Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Square Head Plug
      *b Oil Pan
      *c Dipstick
      • Non-reusable part
      WARNING:

      Do not remove the square head plug when the ATF temperature is high. Otherwise, ATF could overflow and cause severe burns or serious injury. Remove the square head plug when the transaxle and ATF temperatures are low.

      HINT: 

      Use a suitable oil pressure gauge that corresponds to the line pressure because the maximum scale value differs depending on the oil pressure gauge.

    7. Install SSTs (49 D019 908, 49 D019 909, 49 D019 910, 49 D019 911, 49 D019 913) to the line pressure detection port as shown in the figure.
      • SST: 49D01990849D01990949D01991049D01991149D019913 
      GTY483579Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Start the engine.
    9. Warm up the engine until the ATF temperature is 60 to 70 °C (140 to 158 °F).
    10. Shift the selector lever to the D position.
    11. Measure the line pressure while idling in D position.
    12. Measure the line pressures while idling in the M (1st gear) and R positions using the same procedure.
    13. Stop the engine.
    14. Change the low-pressure gauge (49 D019 908) to the high-pressure gauge (49 D019 907).
      GTY493451Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • SST: 49D01990749D019909 
    15. Start the engine.
    16. Measure the line pressure while stalling in D position.
      1. Strongly depress the brake pedal with the left foot.
      2. Shift the selector lever to the D position.
        NOTE:

        To prevent damage to the transaxle, measure the line pressure while stalling (Step iii - iv) within 5 s.

      3. Slowly depress the accelerator pedal fully with the right foot all the way down.
      4. Read the line pressure quickly while stalling, 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.
    17. Measure the line pressure while stalling for positions other than D in the same procedure.
      • If there is any malfunction, one of the following causes may have occurred:
      Condition Possible cause
      Lower than specification Lower in R, D, and M (1GR) position
      • Oil pump wear
      • ATF leakage from oil pump, valve body assembly, and transaxle case
      • Pressure regulator valve sticking
      • Pressure control solenoid malfunction
      • Solenoid reducing valve sticking
      Lower in D and M (1GR) position
      • ATF leakage from low clutch hydraulic circuit
      Lower in R and M (1GR) position
      • ATF leakage from low and reverse brake hydraulic circuit
      Lower in R position
      • ATF leakage from R-3-5 brake hydraulic circuit
      Higher than specification Higher in R, D, and M (1GR) position
      • Pressure regulator valve sticking
      • Pressure control solenoid malfunction
      LINE PRESSURE

      Measurement conditions Specification (kPa (kgf/cm2 , psi))
      Idling R position 500 to 700 (5.10 to 7.13, 72.6 to 101.0)
      D and M (1GR) position 330 to 470 (3.37 to 4.79, 47.9 to 68.1)
      Stalling R position 1, 790 to 2, 100 (18.26 to 21.41, 259.7 to 304.5)
      D and M (1GR) position 970 to 1, 170 (9.90 to 11.93, 141.0 to 169.6)
    18. Stop the engine.
    19. Remove the SSTs.
      WARNING:

      If the SST is removed when the ATF temperature is high, ATF could overflow and cause severe burns or serious injury. Remove the SST when the transaxle and ATF temperatures are low.

    20. Install a new square head plug.

      HINT: 

      Do not reuse the square head plug because a sealant coating has been applied.

      Torque: 8.5 N*m (87 kgf*cm, 75 in.*lbf) 

      GTY486634Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Square Head Plug
      *b Oil Pan
      *c Dipstick
      • Non-reusable part
    21. Tighten the harness bracket installation bolts in the order shown in the figure.

      Torque: 9.0 N*m (92 kgf*cm, 80 in.*lbf) 

      GTY483260Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Harness Bracket
    22. Install the splash shield. (LH)

      Refer to INSTALLATION

    23. Connect the wiring harness clip to the harness bracket.
      GTY490905Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Harness Bracket
      *b Wiring Harness Clip
    24. Install the front under cover No. 2.

      Refer to INSTALLATION

  3. TEST STALL 
    1. Perform the mechanical system test preparation.

      Refer to ON-VEHICLE INSPECTION 

    2. Apply the parking brake firmly, and set the wheel blocks for both 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.
        NOTE:

        To prevent damage to the transaxle, measure the stall speed (Step iii - iv) within 5 s.

      3. Slowly depress the accelerator pedal fully 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 the M (1st gear) and R positions using the same procedure.
      • If there is any malfunction, one of the following causes may have occurred:
      Condition Possible cause
      Higher than specification Higher in R, D, and M (1GR) position Line pressure is low
      • Oil pump wear
      • ATF leakage from oil pump, valve body assembly, and transaxle case
      • Pressure regulator valve sticking
      • TR control valve sticking
      • Pressure control solenoid operation malfunction
      • Low and reverse brake slippage
      Higher in D and M (1GR) position
      • Low clutch slippage
      Higher in R position Perform road test to determine whether problem is in R-3-5 brake or low and reverse brake
      • Engine brake operates in M (1GR) position
        • R-3-5 brake slippage
      • Engine braking does not operate in M (1GR) position
        • Low and reverse brake slippage
      Lower than specification Lower in R, D, and M (1GR) position
      • Engine malfunction
      • One-way clutch slippage in torque converter
      STALL SPEED

      Measurement conditions Standard value (rpm)
      R position 1, 800 to 2, 400
      D position 2, 500 to 3, 400
      M position
  4. TEST TIME LAG 
    1. Perform the mechanical system test preparation.

      Refer to ON-VEHICLE INSPECTION 

    2. Apply the parking brake firmly, and set the wheel blocks for both the front and rear wheels.
    3. Start the engine.
    4. Measure the time lag from the N position to the D position.
      1. Shift the selector lever from the N position to the D position with the brake pedal depressed.
      2. Measure the time until the shift shock is felt firmly after shifting.
    5. Measure the time lag from the N position to the R position using the same procedure.
      • If there is any malfunction, one of the following causes may have occurred:
      Condition Possible cause
      N to D selected Longer than specification
      • Line pressure is low
      • Low clutch slippage
      • ATF leakage from low clutch hydraulic circuit
      • ATF leakage from low and reverse brake hydraulic circuit
      • Shift solenoid No. 1 operation malfunction
      • Shift solenoid No. 4 operation malfunction
      Shorter than specification
      • Line pressure is high
      • N-D accumulator operation malfunction
      • Shift solenoid No. 1 operation malfunction
      • Shift solenoid No. 4 operation malfunction
      N to R selected Longer than specification
      • Line pressure is low
      • Low and Reverse brake slippage
      • R-3-5 brake slippage
      • ATF leakage from R-3-5 brake hydraulic circuit
      • ATF leakage from low and reverse brake hydraulic circuit
      • Shift solenoid No. 3 operation malfunction
      • Shift solenoid No. 4 operation malfunction
      Shorter than specification
      • Line pressure is high
      • N-R accumulator operation malfunction
      • Shift solenoid No. 3 operation malfunction
      • Shift solenoid No. 4 operation malfunction
      TIME LAG

      Measurement conditions Specification (s)
      N to D selected 0.4 to 0.7
      N to R selected
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