Reducing Pressure Adjustment
REDUCING PRESSURE ADJUSTMENTWHEN SCAN TOOL IS NOT USED
1. Remove parts up to the oil filter in the same way as for adjustment of the line pressure. The valve body need not be removed.
2. Tune the adjustment screw of the lower valve body and adjust so that the reducing pressure is the standard value. When the adjustment screw is turned clockwise, the reducing pressure decreases; when it is turned counterclockwise, it increases.
NOTE: When adjusting the reducing pressure, aim for the center value [425 kPa (60 psi)] of the standard value allowance.
Standard value: 415 - 435 kPa (60 - 63 psi)
Oil pressure change for each turn of adjustment screw: 45 kPa (6.5 psi)
3. Install the oil filter and oil pan in the same way as for adjustment of the line pressure.
4. Perform the oil pressure test. Readjust if necessary.
WHEN SCAN TOOL IS USED
1. Use the scan tool to force-actuate the pressure control solenoid valve to 50 % duty, and measure the kickdown brake apply pressure at that time. If the kickdown brake apply pressure is not within the standard value, adjust using the reducing pressure adjustment screw.
Standard value: 250 - 300 kPa (36 - 44 psi)
Oil pressure change for each turn of adjustment screw: 22 kPa (3.2 psi)
2. Check to be sure, after completing this adjustment, that the reducing pressure is within the range of 370 - 490 kPa (51 - 68 psi).
CAUTION: The adjustment should be made at an oil temperature of 70 - 80°C (158 - 176°F).
If the adjustment is made at an oil temperature that is too high, the line pressure will decrease during idling, with the result that a correct adjustment cannot be made.