4 shift solenoid valves are installed directly in valve-body. The solenoids operates of ON and OFF by the control signal from TCU. Combinations of 4 solenoids, S1, S2, S3 and S4, changes gear ranges(1st to 6th)
TCM set this code If the rear gear ratio that calculated by Engine speed/Output speed and the target gear ratio that calculated by compounding of solenoid valves are not match.
Item
Detecting Condition
Possible Cause
DTC Strategy
Stuck "OFF"
Faulty in SCSV "C"(S3)
Faulty in TCM
Fail-safe cannot release after detection at 2 driving cycle.(No up shift 4th, 5th and 6th. so cannot judge pass criteria)
If the DTC of S4 OFF fail is stored, then there is a possibility fo SL2 ON fail.(S4 OFF and SL2 ON fail makes same wrong gear pattern, so TCM can be distinguish S4 ON fail and SL2 ON fail.)
S4 ON fail and SL2 ON fail can be distinguished by whether engine brake is effective or not.
S4 OFF fail:Current gear 1st EB then present gear 1st EB and Current gear 3rd EB then present gear 3rd EB
SL2 ON fail:Current gear 1st EB then present gear 1st and Current gear 3rd EB then present gear 3rd.
Enable Conditions
10.2V < Battery voltage < 14V
Not error in system
CAN communication : normal.
Solenoid valve : normal
Threshold Value
Current gear 5th and Present gear 4th
Current gear 6th and Present gear 4th
Diagnostic Time
Immediately
Fail Safe
No up-shift to 4th, 5th and 6th
* Fail-safe condition
S3 stuck On decision
1. Not manual mode or
2. Manual mode and speed < 80km/h
Measuring Position
Resistance (20?)
Signal - Ground
11 ~ 16 ?
Fig 1) D Range-1st gear
Fig 2) D Range-2nd gear
Fig 3) Sports mode -1st gear
Fig 4) Sports mode -2nd gear
Fig 5) Sports mode -3rd gear
Fig 6) Sports mode -4th gear
Fig 7) Sports mode -5th gear
Fig 8) Sports mode -6th gear
Fig 9) Reverse