The Pressure Control Solenoid Valve A ( PCSV A ) converts the electric signals, which are controlled by the TCM, into hyraulic pressure.
The PCSV A controls the hydraulic pressure, which is applied to the Clutches and Brakes, to reduce the shift shock during shifting.
The PCM/TCM checks the Pressure Control Solenoid Valve signals by monitoring the feedback signals from the solenoid valve drive circuit. If an unexpected signal is monitored, ( For example, high voltage is detected when low voltage is expected, or low voltage is detected when high voltage is expected) the TCM judges that the PCSV A drive circuit is malfunctioning and sets this code.
Item | Detecting Condition | Possible Cause |
DTC Strategy | ● Check voltage range | ● Open or short in circuit ● Faulty PCSV-A ● Faulty PCM/TCM |
Enable Conditions | ● 25% < Solenoid duty < 100% ● Timer of PWM monitoring > 0.5sec ● 8V < Voltage of Battery <16V | |
Threshold Value | ||
Diagnostic Time | ● More than 300 ms | |
Fail Safe | ● Locked in 3 rd gear. |