Drivetrain. Yaris. Ncp93, 131
U340E Automatic Transmission Transaxle. Yaris. Ncp93, 131
Automatic Transaxle System (For Sedan) -- Problem Symptoms Table |
- HINT:
- If a normal code is displayed during the DTC check although the trouble still occurs, check the electrical circuits for each symptom in the order given in the following charts and proceed to the page given for troubleshooting.
- The Matrix Chart is divided into 2 chapters.
- When the circuit on which*1 is attached malfunctions, a DTC could be output.
Refer to the table below when the trouble cause is considered to be electrical. If the trouble still occurs even though there are no abnormalities in any of the other circuits, then check and replace the ECM.
| Symptom | Suspected Area | See page |
| No up-shift (Particular gear, from 1st to 3rd gear, is not up-shifted) | ECM | YARIS_NCP93 RM000001CN002AX.html |
| No up-shift (From 3rd to 4th) | Shift lock control unit circuit | YARIS_NCP93 RM000000W840PUX_09_0005.html |
| ECM | YARIS_NCP93 RM000001CN002AX.html | |
| No down-shift (From 4th to 3rd) | Shift lock control unit circuit | YARIS_NCP93 RM000000W840PUX_09_0005.html |
| ECM | YARIS_NCP93 RM000001CN002AX.html | |
| No down-shift (Particular gear, from 3rd to 1st gear, is not down-shifted) | ECM | YARIS_NCP93 RM000001CN002AX.html |
| No lock-up or No lock-up off | Stop light switch circuit *1 | YARIS_NCP93 RM000000PDF0E6X.html |
| Engine coolant temperature sensor circuit *1 | YARIS_NCP93 RM000000PDF0E6X.html | |
| Vehicle speed sensor circuit *1 | YARIS_NCP93 RM000000PDF0E6X.html | |
| Speed sensor (NT) circuit *1 | YARIS_NCP93 RM0000015VR060X.html | |
| ATF temperature sensor circuit *1 | YARIS_NCP93 RM000000W850I7X.html | |
| Shift solenoid valve S1 *1 | YARIS_NCP93 RM000000W8608EX.html | |
| Shift solenoid valve S2 *1 | YARIS_NCP93 RM000000W87088X.html | |
| Shift solenoid valve SLU *1 | YARIS_NCP93 RM000000W890BEX.html | |
| Throttle position sensor circuit *1 | YARIS_NCP93 RM000000PDF0E6X.html | |
| ECM | YARIS_NCP93 RM000001CN002AX.html | |
| Shift point too high or too low | Throttle position sensor circuit *1 | YARIS_NCP93 RM000000PDF0E6X.html |
| ECM | YARIS_NCP93 RM000001CN002AX.html | |
| Up-shift to 2nd while in L position | ECM | YARIS_NCP93 RM000001CN002AX.html |
| Up-shift to 3rd while in 2 position | ECM | YARIS_NCP93 RM000001CN002AX.html |
| Up-shift from 3rd to 4th in 3 position | Shift lock control unit circuit | YARIS_NCP93 RM000000W840PUX_09_0005.html |
| Park/neutral position switch *1 | YARIS_NCP93 RM000000W840PUX.html | |
| ECM | YARIS_NCP93 RM000001CN002AX.html | |
| Up-shift from 3rd to 4th while engine is cold | Engine coolant temperature sensor circuit *1 | YARIS_NCP93 RM000000PDF0E6X.html |
| ECM | YARIS_NCP93 RM000001CN002AX.html | |
| Harsh engagement (From N to D) | Park/neutral position switch *1 | YARIS_NCP93 RM000000W840PUX.html |
| ECM | YARIS_NCP93 RM000001CN002AX.html | |
| Harsh engagement (From 3rd to 4th) | Shift solenoid valve ST *1 | YARIS_NCP93 RM000000GLW011X.html |
| ECM | YARIS_NCP93 RM000001CN002AX.html | |
| Harsh engagement (Lock-up) | Shift solenoid valve SLU *1 | YARIS_NCP93 RM000000W890BEX.html |
| ECM | YARIS_NCP93 RM000001CN002AX.html | |
| Harsh engagement (Any driving position) | Throttle position sensor circuit *1 | YARIS_NCP93 RM000000PDF0E6X.html |
| ECM | YARIS_NCP93 RM000001CN002AX.html | |
| Poor acceleration | ECM | YARIS_NCP93 RM000001CN002AX.html |
| No kick-down | ECM | YARIS_NCP93 RM000001CN002AX.html |
| Engine stalls when starting off or stopping | ECM | YARIS_NCP93 RM000001CN002AX.html |
| Malfunction in shifting | Park/neutral position switch *1 | YARIS_NCP93 RM000000W840PUX.html |
| Shift lock control unit circuit | YARIS_NCP93 RM000000W840PUX_09_0005.html | |
| ECM | YARIS_NCP93 RM000001CN002AX.html |
| Symptom | Suspected Area | See page |
| Vehicle does not move in any forward positions or in R position | Manual valve | YARIS_NCP93 RM00000192Z02IX.html |
| Valve body assembly | YARIS_NCP93 RM00000191K01AX.html | |
| Planetary gear unit | YARIS_NCP93 RM00000192G01LX.html | |
| Forward clutch (C1) | YARIS_NCP93 RM00000192G01LX.html | |
| No. 2 one-way clutch (F2) | YARIS_NCP93 RM00000192G01LX.html | |
| Reverse clutch (C3) | YARIS_NCP93 RM00000192G01LX.html | |
| 1st and reverse brake (B3) | YARIS_NCP93 RM00000192G01LX.html | |
| Vehicle does not move in R position | Manual valve | YARIS_NCP93 RM00000192Z02IX.html |
| Valve body assembly | YARIS_NCP93 RM00000191K01AX.html | |
| Planetary gear unit | YARIS_NCP93 RM00000192G01LX.html | |
| Reverse clutch (C3) | YARIS_NCP93 RM00000192G01LX.html | |
| 1st and reverse brake (B3) | YARIS_NCP93 RM00000192G01LX.html | |
| No up-shift (From 1st to 2nd) | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| 2nd brake (B2) | YARIS_NCP93 RM00000192G01LX.html | |
| No. 1 one-way clutch (F1) | YARIS_NCP93 RM00000192G01LX.html | |
| No up-shift (From 2nd to 3rd) | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| Direct clutch (C2) | YARIS_NCP93 RM00000192G01LX.html | |
| No up-shift (From 3rd to 4th) | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| O/D and 2nd brake (B1) | YARIS_NCP93 RM00000192G01LX.html | |
| No down-shift (From 4th to 3rd) | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| No down-shift (From 3rd to 2nd) | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| No down-shift (From 2nd to 1st) | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| No lock-up or No lock-up off | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| Torque converter clutch | YARIS_NCP93 RM00000192E02YX.html | |
| Harsh engagement (From N to D) | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| Forward clutch (C1) | YARIS_NCP93 RM00000192G01LX.html | |
| No. 2 one-way clutch (F2) | YARIS_NCP93 RM00000192G01LX.html | |
| Harsh engagement (Lock-up) | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| Torque converter clutch | YARIS_NCP93 RM00000192E02YX.html | |
| Harsh engagement (From N to R) | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| C3 accumulator | YARIS_NCP93 RM00000192G01LX.html | |
| Reverse clutch (C3) | YARIS_NCP93 RM00000192G01LX.html | |
| 1st and reverse brake (B3) | YARIS_NCP93 RM00000192G01LX.html | |
| Harsh engagement (From 1st to 2nd) | B2 accumulator | YARIS_NCP93 RM00000192G01LX.html |
| Valve body assembly | YARIS_NCP93 RM00000191K01AX.html | |
| 2nd brake (B2) | YARIS_NCP93 RM00000192G01LX.html | |
| No. 1 one-way clutch (F1) | YARIS_NCP93 RM00000192G01LX.html | |
| Harsh engagement (From 2nd to 3rd) | C2 accumulator | YARIS_NCP93 RM00000192G01LX.html |
| Valve body assembly | YARIS_NCP93 RM00000191K01AX.html | |
| Direct clutch (C2) | YARIS_NCP93 RM00000192G01LX.html | |
| Harsh engagement (From 3rd to 4th) | Shift solenoid valve ST | YARIS_NCP93 RM000000GLW011X.html |
| Valve body assembly | YARIS_NCP93 RM00000191K01AX.html | |
| O/D and 2nd brake (B1) | YARIS_NCP93 RM00000192G01LX.html | |
| Harsh engagement (From 4th to 3rd) | Shift solenoid valve ST | YARIS_NCP93 RM000000GLW011X.html |
| Valve body assembly | YARIS_NCP93 RM00000191K01AX.html | |
| Harsh engagement (D, 2, L position) | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| Slippage or shuddering (Forward position) | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| Oil strainer | YARIS_NCP93 RM00000192G01LX.html | |
| Torque converter clutch | YARIS_NCP93 RM00000192E02YX.html | |
| Forward clutch (C1) | YARIS_NCP93 RM00000192G01LX.html | |
| Direct clutch (C2) | YARIS_NCP93 RM00000192G01LX.html | |
| O/D and 2nd brake (B1) | YARIS_NCP93 RM00000192G01LX.html | |
| 2nd brake (B2) | YARIS_NCP93 RM00000192G01LX.html | |
| No. 1 one-way clutch (F1) | YARIS_NCP93 RM00000192G01LX.html | |
| No. 2 one-way clutch (F2) | YARIS_NCP93 RM00000192G01LX.html | |
| Slippage or shuddering (R position) | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| Oil strainer | YARIS_NCP93 RM00000192G01LX.html | |
| Reverse clutch (C3) | YARIS_NCP93 RM00000192G01LX.html | |
| 1st and reverse brake (B3) | YARIS_NCP93 RM00000192G01LX.html | |
| Slippage or shuddering (1st) | No. 2 one-way clutch (F2) | YARIS_NCP93 RM00000192G01LX.html |
| Slippage or shuddering (2nd) | 2nd brake (B2) | YARIS_NCP93 RM00000192G01LX.html |
| No. 1 one-way clutch (F1) | YARIS_NCP93 RM00000192G01LX.html | |
| Slippage or shuddering (3rd) | Direct clutch (C2) | YARIS_NCP93 RM00000192G01LX.html |
| Slippage or shuddering (4th) | O/D and 2nd brake (B1) | YARIS_NCP93 RM00000192G01LX.html |
| No engine braking (1st: L position) | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| 1st and reverse brake (B3) | YARIS_NCP93 RM00000192G01LX.html | |
| No engine braking (2nd: 2 position) | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| 2nd and O/D brake (B1) | YARIS_NCP93 RM00000192G01LX.html | |
| No kick-down | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| Poor acceleration | Valve body assembly | YARIS_NCP93 RM00000191K01AX.html |
| Torque converter clutch | YARIS_NCP93 RM00000192E02YX.html | |
| Engine stalls when starting off or stopping | Torque converter clutch | YARIS_NCP93 RM00000192E02YX.html |