The Pressure Control Solenoid Valve A ( PCSV A ) converts the electric signals, which are controlled by the PCM/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 PCM/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
? Solenoid is turned ON and circuit is short
? Solenoid is turned OFF and circuit is open
? Voltage of Battery >10V
Threshold Value
Diagnostic Time
? More than 120 ms
Fail Safe
? Locked in 3 rd gear.