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 ON
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)
The detection criteria of S3 ON fail and 1-2 shift valve SP stick is the same name, so if detection criteria is fulfilled, then both S3 ON DTC and 1-2 shift valve DTC are stored.
But if present grar is judged 1st at current ger 2nd before this detection criteria is fulled, then only the DTC of 1-2 shift valve SP stick is stored.
S3 ON fail and 1-2 shift valve SP stick can be distinguished by what present gear is made at current gear 2nd(not 2nd EB)
S3 ON fail:Current gear 2nd then present gear 2nd.
1-2 shift valve SP stick:Cuttent gear 2nd then present gear 1st.
Enable Conditions
10.2V < Battery voltage < 14V
Not error in system
CAN communication : normal.
Solenoid valve : normal
Threshold Value
Current gear 2nd and Present gear = not 1st
and
? Current gear 4th and Present gear = 3rd or
? Current gear 5th and Present gear = Neutral
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