Pressure Regulating Solenoid: Testing and Inspection
Solenoid Valves (Shift Solenoid-A, Shift Solenoid-B, TCC Pressure Control Solenoid and Pressure Control Solenoid) InspectionSolenoid Valves (Shift Solenoid-A and Shift Solenoid-B)
Resistance check
CAUTION:
Be very careful as dust etc. does not enter when solenoid valves are inspected.
Measure resistance between terminal (2) and solenoid valve body. If resistance is out of specification, replace solenoid valve (1).
Shift solenoid-A and Shift solenoid-B resistance
Standard: 11 - 15 ohms (at 20 °C (68 °F))
Operation check
^ With solenoid connected to battery (2) as shown in figure, check that solenoid valve (1) is actuated with click sound.
^ With shift solenoid valve (1) connected to battery (2), confirm that shift solenoid valve is open by blowing air (50 - 200 kPa, 0.5 - 2.0 kgf/cm2, 7 - 28.5 psi) into solenoid valve as shown in figure.
^ With shift solenoid valve (1) not connected to battery (2), confirm that shift solenoid valve is closed by blowing air (50 - 200 kPa, 0.5 - 2.0 kgf/cm2, 7 - 28.5 psi) into solenoid valve as shown in figure.
CAUTION:
Do not insert air gun against strainer installed on inlet of solenoid valve too deeply, when blowing air into solenoid valve. If not, the strainer will be damaged.
Pressure Control Solenoid Valve and TCC Pressure Control Solenoid Valve
Resistance check
CAUTION:
Be very careful as dust etc. does not enter when pressure control solenoid valves are inspected.
Measure resistance between pressure control solenoid valves (Pressure control solenoid and TCC pressure control solenoid) (1) terminals. If resistance is out of specification, replace valve body assembly.
Pressure control solenoid and TCC pressure control solenoid resistance
Standard: 5.0 - 5.6 ohms (at 20 °C (68 °F))
Operation check
Check pressure control solenoid valves (Pressure control solenoid and TCC pressure control solenoid) (1) operation in either of the following methods.
[Using regulated DC power supply]
1) Connect pressure control solenoid valve (1) with regulated DC power supply (2) as shown in figure.
2) Turn regulated DC power supply switch ON, increase voltage of power supply keeping current within 1.0 A.
3) Check that valve (3) moves gradually in arrow "A" direction as voltage increases.
4) Check that valve (3) moves in arrow "B" direction as voltage decreases.
5) Turn power supply switch OFF.
CAUTION:
Do not feed current 1.0 A or more, or pressure control solenoid will be burned out.
[Not using regulated DC power supply]
1) Connect pressure control solenoid valve (1) to battery (4) setting 21 W bulb (2) in between as shown in figure.
2) Check that valve (3) moves in arrow "A" direction.
3) Disconnect pressure control solenoid valve (1) from battery (4) and check that valve (3) moves in arrow "B" direction as shown in figure.
CAUTION:
Set 21 W bulb in between, or pressure control solenoid valve will be burned out.
