| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001GCMF |
| 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): HOW TO PROCEED WITH TROUBLESHOOTING; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022] | ||
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HOW TO PROCEED WITH TROUBLESHOOTING |
CAUTION / NOTICE / HINT
HINT:
- *: Use the Techstream
- Use the following procedure to troubleshoot the hybrid control system.
PROCEDURE
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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2. |
CUSTOMER PROBLEM ANALYSIS |
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3. |
CONNECT TECHSTREAM TO THE DLC3* |
HINT:
If the display on the tester indicates a communication error, inspect the DLC3.
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4. |
CHECK DTC AND FREEZE FRAME DATA* |
Click here
![2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
HINT:
- Make sure to save freeze frame data because the data is necessary for performing simulation tests.
- For the hybrid control system, there are many DTCs, many of which can be stored due to a single malfunction. As a result, in some of the diagnosis procedures an instruction is provided to check for other DTCs. By following the diagnosis path based on the combination of output DTCs, it is possible to narrow down the problem early and avoid unnecessary diagnosis.
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5. |
CLEAR DTC AND FREEZE FRAME DATA* |
Click here
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6. |
CONDUCT VISUAL INSPECTION |
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7. |
CONFIRM PROBLEM SYMPTOMS |
HINT:
If the hybrid system does not start, perform steps 9 and 11 first.
Result |
Proceed to |
|---|---|
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Malfunction does not occur. |
A |
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Malfunction occurs. |
B |
| B |
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8. |
DUPLICATE CONDITIONS THAT PRODUCE SYMPTOMS |
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9. |
CHECK FOR DTCS* |
Click here
Result |
Proceed to |
|---|---|
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DTCs are output. |
A |
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DTCs are not output. |
B |
| B |
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10. |
REFER TO DTC CHART |
Click here
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11. |
CONDUCT CIRCUIT INSPECTION |
Result |
Proceed to |
|---|---|
Malfunction not confirmed. |
A |
Malfunction confirmed. |
B |
| B |
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12. |
CHECK FOR INTERMITTENT PROBLEMS |
Click here
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13. |
IDENTIFY PROBLEM |
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14. |
ADJUST AND/OR REPAIR |
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15. |
CONDUCT CONFIRMATION TEST |
| NEXT |
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END |
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16. |
CONDUCT BASIC INSPECTION |
Result |
Proceed to |
|---|---|
Malfunctioning parts not confirmed. |
A |
Malfunctioning parts confirmed. |
B |
| B |
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17. |
CHECK ECU POWER SOURCE CIRCUIT |
Click here
| NEXT |
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18. |
CONDUCT PARTS INSPECTION |
| NEXT |
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