Problem Symptoms Table
WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.
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.
- The Matrix Chart is divided into 2 chapters.
- When the circuit on which *1 is attached malfunctions, a DTC could be output.
Chapter 1: Electronic Circuit Matrix Chart
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.
ELECTRONIC CIRCUIT MATRIX CHART - CHAPTER 1
Chapter 2: On-Vehicle Repair and Off-Vehicle Repair
ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR - CHAPTER 2
| Symptom | Suspected Area | See |
|---|---|---|
| Vehicle does not move in any forward positions or in R position | Manual valve | VALVE BODY |
| Valve body assembly | VALVE BODY ASSEMBLY | |
| Planetary gear unit | AUTOMATIC TRANSAXLE UNIT | |
| Forward clutch (C1) | AUTOMATIC TRANSAXLE UNIT | |
| No. 2 one-way clutch (F2) | AUTOMATIC TRANSAXLE UNIT | |
| Reverse clutch (C3) | AUTOMATIC TRANSAXLE UNIT | |
| 1st and reverse brake (B3) | AUTOMATIC TRANSAXLE UNIT | |
| Vehicle does not move in R position | Manual valve | VALVE BODY |
| Valve body assembly | VALVE BODY ASSEMBLY | |
| Planetary gear unit | AUTOMATIC TRANSAXLE UNIT | |
| Reverse clutch (C3) | AUTOMATIC TRANSAXLE UNIT | |
| 1st and reverse brake (B3) | AUTOMATIC TRANSAXLE UNIT | |
| No up-shift (From 1st to 2nd) | Valve body assembly | VALVE BODY ASSEMBLY |
| 2nd brake (B2) | AUTOMATIC TRANSAXLE UNIT | |
| No. 1 one-way clutch (F1) | AUTOMATIC TRANSAXLE UNIT | |
| No up-shift (From 2nd to 3rd) | Valve body assembly | VALVE BODY ASSEMBLY |
| Direct clutch (C2) | AUTOMATIC TRANSAXLE UNIT | |
| No up-shift (From 3rd to 4th) | Valve body assembly | VALVE BODY ASSEMBLY |
| O/D and 2nd brake (B1) | AUTOMATIC TRANSAXLE UNIT | |
| No down-shift (From 4th to 3rd) | Valve body assembly | VALVE BODY ASSEMBLY |
| No down-shift (From 3rd to 2nd) | Valve body assembly | VALVE BODY ASSEMBLY |
| No down-shift (From 2nd to 1st) | Valve body assembly | VALVE BODY ASSEMBLY |
| No lock-up or No lock-up off | Valve body assembly | VALVE BODY ASSEMBLY |
| Torque converter clutch | TORQUE CONVERTER CLUTCH AND DRIVE PLATE | |
| Harsh engagement (From N to D) | Valve body assembly | VALVE BODY ASSEMBLY |
| Forward clutch (C1) | AUTOMATIC TRANSAXLE UNIT | |
| No. 2 one-way clutch (F2) | AUTOMATIC TRANSAXLE UNIT | |
| Harsh engagement (Lock-up) | Valve body assembly | VALVE BODY ASSEMBLY |
| Torque converter clutch | TORQUE CONVERTER CLUTCH AND DRIVE PLATE | |
| Harsh engagement (From N to R) | Valve body assembly | VALVE BODY ASSEMBLY |
| C3 accumulator | AUTOMATIC TRANSAXLE UNIT | |
| Reverse clutch (C3) | AUTOMATIC TRANSAXLE UNIT | |
| 1st and reverse brake (B3) | AUTOMATIC TRANSAXLE UNIT | |
| Harsh engagement (From 1st to 2nd) | B2 accumulator | AUTOMATIC TRANSAXLE UNIT |
| Valve body assembly | VALVE BODY ASSEMBLY | |
| 2nd brake (B2) | AUTOMATIC TRANSAXLE UNIT | |
| No. 1 one-way clutch (F1) | AUTOMATIC TRANSAXLE UNIT | |
| Harsh engagement (From 2nd to 3rd) | C2 accumulator | AUTOMATIC TRANSAXLE UNIT |
| Valve body assembly | VALVE BODY ASSEMBLY | |
| Direct clutch (C2) | AUTOMATIC TRANSAXLE UNIT | |
| Harsh engagement (From 3rd to 4th) | Shift solenoid valve ST | DTC P0787 SHIFT / TIMING SOLENOID LOW (SHIFT SOLENOID VALVE ST); DTC P0788 SHIFT / TIMING SOLENOID HIGH (SHIFT SOLENOID VALVE ST) |
| Valve body assembly | VALVE BODY ASSEMBLY | |
| O/D and 2nd brake (B1) | AUTOMATIC TRANSAXLE UNIT | |
| Harsh engagement (From 4th to 3rd) | Shift solenoid valve ST | DTC P0787 SHIFT / TIMING SOLENOID LOW (SHIFT SOLENOID VALVE ST); DTC P0788 SHIFT / TIMING SOLENOID HIGH (SHIFT SOLENOID VALVE ST) |
| Valve body assembly | VALVE BODY ASSEMBLY | |
| Harsh engagement (D, 2, L position) | Valve body assembly | VALVE BODY ASSEMBLY |
| Slippage or shuddering (Forward position) | Valve body assembly | VALVE BODY ASSEMBLY |
| Oil strainer | VALVE BODY ASSEMBLY | |
| Torque converter clutch | TORQUE CONVERTER CLUTCH AND DRIVE PLATE | |
| Forward clutch (C1) | AUTOMATIC TRANSAXLE UNIT | |
| Direct clutch (C2) | AUTOMATIC TRANSAXLE UNIT | |
| O/D and 2nd brake (B1) | AUTOMATIC TRANSAXLE UNIT | |
| 2nd brake (B2) | AUTOMATIC TRANSAXLE UNIT | |
| No. 1 one-way clutch (F1) | AUTOMATIC TRANSAXLE UNIT | |
| No. 2 one-way clutch (F2) | AUTOMATIC TRANSAXLE UNIT | |
| Slippage or shuddering (R position) | Valve body assembly | VALVE BODY ASSEMBLY |
| Oil strainer | VALVE BODY ASSEMBLY | |
| Reverse clutch (C3) | AUTOMATIC TRANSAXLE UNIT | |
| 1st and reverse brake (B3) | AUTOMATIC TRANSAXLE UNIT | |
| Slippage or shuddering (1st) | No. 2 one-way clutch (F2) | AUTOMATIC TRANSAXLE UNIT |
| Slippage or shuddering (2nd) | 2nd brake (B2) | AUTOMATIC TRANSAXLE UNIT |
| No.1 one-way clutch (F1) | AUTOMATIC TRANSAXLE UNIT | |
| Slippage or shuddering (3rd) | Direct clutch (C2) | AUTOMATIC TRANSAXLE UNIT |
| Slippage or shuddering (4th) | O/D and 2nd brake (B1) | AUTOMATIC TRANSAXLE UNIT |
| No engine braking (1st: L position) | Valve body assembly | VALVE BODY ASSEMBLY |
| 1st and reverse brake (B3) | AUTOMATIC TRANSAXLE UNIT | |
| No engine braking (2nd: 2 position) | Valve body assembly | VALVE BODY ASSEMBLY |
| 2nd and O/D brake (B1) | AUTOMATIC TRANSAXLE UNIT | |
| No kick-down | Valve body assembly | VALVE BODY ASSEMBLY |
| Poor acceleration | Valve body assembly | VALVE BODY ASSEMBLY |
| Torque converter clutch | TORQUE CONVERTER CLUTCH AND DRIVE PLATE | |
| Engine stalls when starting off or stopping | Torque converter clutch | TORQUE CONVERTER CLUTCH AND DRIVE PLATE |