ON/OFF solenoid valve maintain "close" status usually and controlled by TCM.TCM out "ON/OFF" signal, ON/OFF solenoid valve changes oil pressure direction to "Clutch E" or "Brake D".
TCM set this code If detected short to ground / open for solenoid valve cirduit.(MIL ON : 2 driving Cycle)
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
short to ground / open |
•
Mechatronics(E-module + Valvebody) |
Enable Conditions |
•
No error in high voltage generator
•
No error in low voltage generator
•
Voltage drop of high voltage generator ≤ 1V | |
Threshold Value |
•
if PWM = 0% TCM detcetion automatically
•
if 0% <= PWM < 7.6% → voltage : solenoid valve OFF < 0,75V if 7.6% <= PWM <= 92.4% → voltage : solenoid valve ON < 0,75V and voltage : solenoid valve OFF < 0,75V | |
Diagnostic Time |
•
0.03second | |
Fail Safe |
•
high speed : fixed at 5th gear, low speed : fixed at 3rd gear.
•
Reverse : Shift lock(Push "Unlock button → possible to shift) (priority :3) |
The function with the higher priority will aiways take precedence. However, a low-priority is not overruled by a higher priority function.
Functions from different priority categories can also run in parallel. It is important to note which function will take precedence in this case.
In such an event it is possible for a substitute function with low priority not be carried out if a second, higher-priority function is present. This has been taken into account when compiling the priority list and is international.
The mechanical emergency run function must always have the highest priority, since from the electrical standpoint it is the only safe condition.
Fig 1) ON/OFF Solenoid valve - 4th, 5th, 6th gear
