| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001GCMJ |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): PROBLEM SYMPTOMS TABLE; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022] | ||
PROBLEM SYMPTOMS TABLE
Hybrid Control System
|
Symptom |
Suspected Area |
Link |
|---|---|---|
|
Cannot enter EV drive mode |
CAN Communication System |
|
|
Pattern Select Switch EV Mode Circuit |
|
|
|
EV drive mode switch (Combination switch assembly) |
|
|
|
Combination meter assembly |
|
|
|
EV mode indicator light does not illuminate |
Combination meter assembly |
|
|
EV drive mode switch (Combination switch assembly) |
|
|
|
Pattern Select Switch EV Mode Circuit |
|
|
|
EV mode indicator light does not turn off |
Combination meter assembly |
|
|
EV drive mode switch (Combination switch assembly) |
|
|
|
Pattern Select Switch EV Mode Circuit |
|
|
|
Cannot enter SPORT/ECO mode |
CAN Communication System |
|
|
Drive mode select switch (Combination switch assembly) |
|
|
|
Drive Mode Select Switch Circuit |
|
|
|
Combination meter assembly |
|
|
|
SPORT/ECO mode indicator light does not illuminate |
Drive mode select switch (Combination switch assembly) |
|
|
Drive Mode Select Switch Circuit |
|
|
|
Combination meter assembly |
|
|
|
SPORT/ECO mode indicator light does not turn off |
Drive mode select switch (Combination switch assembly) |
|
|
Drive Mode Select Switch Circuit |
|
|
|
Combination meter assembly |
|
|
|
Hunting (Poor idle) |
Check for Diagnosis Related Information*3 |
|
|
Drive Start Control |
|
|
|
Hesitation and/or poor acceleration |
Check for Diagnosis Related Information*3 |
|
|
Brake Override System |
|
|
|
Drive Start Control |
|
|
|
Shift position indicator is malfunctioning |
Indicator Circuit |
|
|
Power switch does not turn on (READY). |
Check Vehicle Control History (wrong assembly confirmation)*1 |
|
|
Smart Key System (for start function) |
|
|
|
ECU Power Source Circuit (Hybrid control system) |
|
|
|
Hybrid vehicle control ECU |
|
|
|
ECM |
|
|
|
Loud rattle from hybrid vehicle transaxle |
Check Idle Learning |
|
|
Transmission input damper assembly |
|
|
|
Hybrid vehicle transaxle assembly |
|
|
|
Engine misfire |
- |
|
|
"Maintenance Required for Traction Battery Cooling Parts See Owner's Manual" is displayed on the multi-information display. *2 |
1. Make sure the HV battery cooling system intake port is not blocked. |
- |
|
2. Make sure there are no gaps between the connecting parts of the ducts. |
- |
|
|
3. Clean the No. 1 hybrid battery intake filter. Check for entry of foreign matter. |
|
|
|
4. Clear the DTCs to reset the learning values even if no DTCs are stored. |
|
|
|
Abnormal noise is heard from the ventilation holes in the rear seat cushion side cover. |
1. Make sure the HV battery cooling system intake port is not blocked. |
- |
|
2. Make sure there are no gaps between the connecting parts of the ducts. |
- |
|
|
3. Clean the No. 1 hybrid battery intake filter. Check for entry of foreign matter. |
|
|
|
4. Clear the DTCs to reset the learning values even if no DTCs are stored. |
|
|
|
Engine stops and starts less frequently. |
Check Vehicle Control History (Limit to Charge / Discharge Control Value by Hybrid Battery Temperature High) |
|
|
Engine speed returns to idle slowly after accelerator pedal is fully released. |
Check Vehicle Control History (Limit to Charge / Discharge Control Value by Hybrid Battery Temperature High) |
|
*1: Check Vehicle Control History (wrong assembly confirmation)
-
Using the Techstream, check the vehicle control history.
Click here
![2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): VEHICLE CONTROL HISTORY](/t3Portal/stylegraphics/info.gif)
HINT:
If "Hybrid Battery Pack Sensor Module Mismatch" is displayed, the wrong type of battery voltage sensor is installed.
-
If the battery voltage sensor had been replaced just before the malfunction occurred, check the part number of the battery voltage sensor.
HINT:
- 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).
-
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 2 minutes or more.
- Turn the power switch on (READY) again.
*2: If the battery cooling blower assembly malfunctions, DTC P0A8100, P0A8111, P0A8115, P0A814B, P0A8196 or P0A8198 will be stored. If only "Maintenance Required for Traction Battery Cooling Parts See Owner's Manual" is displayed on the multi-information display, only perform the inspection of the HV battery cooling system intake port, filter and duct.
*3: If any of the following Diagnosis Related Information items are output, perform troubleshooting for the corresponding DTCs.
Result
|
Result |
Link |
|
|---|---|---|
|
Hybrid control system |
P312387 |
|
|
Motor generator control system |
P31241F |
|
|
P312487 |
||
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