Component Location
General Description
Variable Foced Solenoid (Linear Solenoid) : With the duty control which uses higher frequency(600Hz), instead of the existing PWM type which adapts low frequency(60Hz) to control,spool valve can be conrolled precisely.
In PWM control,the amount of oil flow is determined by the duration of "ON"signal among continuously repeated ON/OFF signals.
In VFS, the amount is decided by how widely spool valve open the passage of going through.
DTC Description
The TCM checks the VFS Control Signal by monitoring the feedback signal 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 Low and Reverse control solenoid circuit is malfunctioning and sets this code.
DTC Detecting Condition
Item | Detecting Condition | Possible Cause |
DTC Strategy | ? Check voltage range | ? Open or short in circuit ? Faulty LR SOLENOID VALVE ? Faulty PCM/TCM |
Enable Conditions | ? 10% = output duty =90% and VB = 9V |
Threshold Value | ? Detected TCU internally by Powerstage driver. ? Feedback current = 500mA |
Diagnostic Time | ? More than 320 ms |
Fail Safe | ? Locked in 3 rd gear.(Control relay off) |
Specification
Solenoid Valve for Pressure Control
- Sensor type : Normal open 3-way
- Operating temperature : -22~266?(-30?~130?)
- Frequency : LR, 2ND, UD, OD, RED : 61.27Hz (at the ATF temp. -20? above)
DCC : 30.64Hz, VFS : 600±20Hz
? KM series : 35Hz
- Internal resistance : 2.7~3.4O(20?)
- Surge voltage : 56 V
Schematic Diagram