Pressure Control Solenoid Valve (PCSV)
PRESSURE CONTROL SOLENOID VALVE (PCSV)DESCRIPTION
NOTE:
^ SCSV-A/B/C (ON/OFF)
^ PCSV-A/B (Duty)
^ DCCSV (ON/OFF)
FUNCTION
^ Damper Clutch Control Solenoid Valve (DCCSV): Controlled by the PCM. A damper clutch operates by the DCCSV
^ Shift Control Solenoid Valve-A (SCSV-A): Controlled by the PCM. It operates at 1st / 4th gear.
^ Shift Control Solenoid Valve-B (SCSV-B): Controlled by the PCM. It operates at 1st / 2nd gear.
^ Shift Control Solenoid Valve-C (SCSV-C): Controlled by the PCM. It operates at 3rd / 4th gear and reduces line pressure. It controls the end clutch.
^ Pressure Control Solenoid Valve-A (PCSV-A): Controlled by the PCM. It controls the engaged pressure of the front clutch, end clutch, kick down brake and low & reverse brake.
^ Pressure Control Solenoid Valve-B (PCSV-B): Controlled by the PCM. It controls the engaged pressure of the rear clutch.
FEATURES:
CHARACTERISTICS:
SOLENOID OPERATION:
INSPECTION
1. Remove the battery terminal.
2. Lift the vehicle.
3. Remove the side cover (A). (Bolt: 2EA)
4. Disconnect the solenoid valve connector (A).
5. Measure the resistance between terminals of the solenoid valve connector on the transaxle case.
6. If the result isn't within the standard value, remove the valve body cover.
7. Measure the resistance after removing the solenoid valve connector.
8. If the result isn't within the standard value, replace the solenoid valve.
ADJUSTMENT
1. Remove the drain plug (A) and drain the automatic transaxle fluid.
2. Remove the oil pan (A).
3. Remove the oil filter (A).
4. Remove the fluid temperature sensor (A).
5. Press the tab of the solenoid valve harness grommet tab (A) and push in.
6. Remove the valve body assembly (A). The manual valve can come out, so be careful not to drop it.
7. Turn the adjustment screw (A) of the regulator valve and adjust so that the line pressure (kickdown brake pressure) reaches the standard value. When the adjustment screw is turned clockwise, the line pressure becomes lower; when it is turned counter-clockwise, it becomes higher.
Standard value: 860 - 900 kPa (122 - 129 psi, 8.77 - 9.18 kg/cm2)
Oil pressure change for each turn of adjustment screw: 38 kPa (5.4 psi, 0.39 kg/cm2)
8. Check to be sure that the O-ring is installed on the upper surface of the valve body at the place.
9. Replace the O-ring of the solenoid valve connector with a new one.
10. Install the valve body assembly to the case and then insert the solenoid valve connector into the case. Be sure, at this time, that the notched part of the connector faces. Also be careful that the lead wiring isn't caught.
11. Tighten the valve body assembly mounting bolts to 10 - 12 Nm (100 - 120 kgf-cm, 7 - 8 ft. lbs.).
12. Install a new oil pan gasket with the oil pan (A).
TORQUE: 10 - 12 Nm (100 - 120 kgf-cm, 7 - 8 ft. lbs.)
13. Pour in the specified amount of automatic transaxle fluid.
14. Perform the oil pressure test. Readjust if necessary.
REDUCING PRESSURE ADJUSTMENT
1. If the Hi-scan tool is not available
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) Turn the adjusting screw of the lower valve body and adjust so that the reduction pressure is the standard value. When the adjusting screw is turned clockwise, the reduction pressure becomes lower; when it is turned counter clockwise, it becomes higher.
NOTE: When adjusting the reducing pressure, aim for the center value (425 kPa, 60 psi) of the standard value allowance.
Standard value: 420 kPa (60 psi, 4.2 ± 0.2 kg/cm2)
Oil pressure change for each turn of the adjustment screw: 420 kPa (60 psi, 4.2 ± 0.2 kg/cm2)
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.
2. If the Hi-scan tool is used
1) Adjust the pressure control solenoid so that the kickdown brake pressure is the standard value when activated to 50% duty by the Scan Tool.
Standard value: 320 ± 30 kPa (39 ± 1 psi, 3.2 ± 0.3 kg/cm2)
Oil pressure change for each turn of the adjustment screw: 30 kPa (3 psi, 0.3 kg/cm2)
CAUTION: This adjustment should be made with an oil temperature of 80 - 90°C (176 - 194°F). If the adjustment is made at a temperature that is too high, the line pressure will drop during-idling, with the result that it might not be possible to make the correct adjustment