Pressure Control Solenoid Valve (PCSV): Description

Fig 1: Identifying Pressure Control Solenoid Valve (PCSV)

Courtesy of HYUNDAI MOTOR CO.

NOTE:

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.

FUNCTION CHART

Item	Function
DC control solenoid valve	Makes the oil passage for damper clutch
Pressure control solenoid valve A	Makes the oil passage for K/D, E/C
Pressure control solenoid valve B	Makes the oil passage for R/C
Shift control solenoid valve A	Makes the oil passage at each gear
Shift control solenoid valve B	Makes the oil passage at each gear
Shift control solenoid valve C	Makes the oil passage for E/C
Torque reduction request sig.	Send torque reduction request signal to ECM

FEATURES

Fig 2: Automatic Transaxle Control System Pressure Control Solenoid Valve Structure & Duty Ratio

Courtesy of HYUNDAI MOTOR CO.

CHARACTERISTICS

VOLTAGE CHART

SOLENOID OPERATION

SOLENOID OPERATION CHART

Shift	SCSV-A	SCSV-B	SCSV-C	PCSV-A	PCSV-B
1	ON	ON	OFF	ON	OFF
1-->2A	OFF	ON	OFF	DUTY	OFF
2A	OFF	ON	OFF	OFF	OFF
2-->3	OFF	OFF	OFF	DUTY	OFF
3	OFF	OFF	ON	OFF	OFF
3-->4	ON	OFF	OFF	DUTY	OFF
4	ON	OFF	ON	OFF	OFF
4-->3	OFF	OFF	OFF	DUTY	DUTY
4-->2B	OFF	ON	ON	DUTY	DUTY
2B	OFF	ON	ON	ON	OFF
3-->2A	OFF	ON	OFF	DUTY	OFF
2-->1	ON	ON	OFF	ON	OFF
N-->D2	OFF	ON	OFF	DUTY	DUTY
Fail safe	OFF	OFF	OFF	OFF	OFF