| Symptom | Suspected Area | Link |
|---|---|---|
| Cannot enter EV drive mode | CAN communication system | |
| EV drive mode switch (Integration control & panel assembly) | ||
| Pattern select switch EV mode circuit | ||
| Combination meter assembly | ||
| EV mode indicator light does not illuminate | Combination meter assembly | |
| EV drive mode switch (Integration control & panel assembly) | ||
| Pattern select switch EV mode circuit | ||
| EV mode indicator light does not turn off | Combination meter assembly | |
| EV drive mode switch (Integration control & panel assembly) | Click here | |
| Pattern select switch EV mode circuit | ||
| Cannot enter ECO mode | CAN communication system | |
| ECO mode switch (Integration control & panel assembly) | ||
| Pattern select switch ECO mode circuit | ||
| Combination meter assembly | ||
| ECO mode indicator light does not illuminate | ECO mode switch (Integration control & panel assembly) | |
| Pattern select switch ECO mode circuit | ||
| Combination meter assembly | ||
| ECO mode indicator light does not turn off | ECO mode switch (Integration control & panel assembly) | |
| Pattern select switch ECO mode circuit | ||
| Combination meter assembly | ||
| Cannot enter SPORT mode | CAN communication system | |
| Combination meter assembly | ||
| SPORT mode switch (Integration control & panel assembly) | ||
| Pattern select switch SPORT mode circuit | ||
| SPORT mode indicator light does not illuminate | Combination meter assembly | |
| SPORT mode switch (Integration control & panel assembly) | ||
| Pattern select switch SPORT mode circuit | ||
| SPORT mode indicator light does not turn off | Combination meter assembly | |
| SPORT mode switch (Integration control & panel assembly) | ||
| Pattern select switch SPORT mode circuit | ||
| Hunting (Poor idle) | Drive start control system | |
| Hesitation and/or poor acceleration | Brake override system | |
| Shift range position cannot be changed by shifting to "+" or "-" | Transmission control switch circuit | |
| Shift position indicator is malfunctioning | Indicator circuit | |
| Power switch does not turn on (READY). | Battery voltage sensor (wrong assembly confirmation)* | |
| Entry and start system (for start function) | ||
| Push-button start | ||
| ECU power source circuit | ||
| Hybrid vehicle control ECU | ||
| ECM | ||
| Loud rattle from hybrid vehicle transaxle | Check idle learning (w/ EGR System) | |
| Check idle learning (w/o EGR System) | ||
| Check idle learning (w/ Canister Pump Module) | ||
| Transmission input damper assembly | ||
| Hybrid vehicle transaxle assembly | ||
| Engine misfire | - | |
| Engine stops and starts infrequently | Check vehicle control history (Charge / Discharge Control Value Limit by Battery Temperature) |
|
| Engine speed returns to idle slowly after accelerator pedal is released | Check vehicle control history (Charge / Discharge Control Value Limit by Battery Temperature) |
*: Check the part number of the battery voltage sensor.
If the battery voltage sensor had been replaced just before the malfunction occurred, check the part number of the battery voltage sensor.
Using the GTS, check the vehicle control history.
Tech Tips
If "Battery Smart Unit Mismatch" is displayed, the wrong type of battery voltage sensor is installed.
After installing the battery voltage sensor, perform the following to check that the power switch can be turned on (READY).
Turn the power switch on (READY).
Turn the power switch off and wait for 30 seconds or more.
Turn the power switch on (READY) again.
Tech Tips
The type of battery voltage sensor to be used varies depending on the vehicle model.
If the wrong type of battery voltage sensor is installed, the power switch cannot be turned on (READY).