| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001GEG4 |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - ] |
| Title: 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2020 - 2025 MY Corolla Corolla HV [01/2019 - ] | ||
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HOW TO PROCEED WITH TROUBLESHOOTING |
CAUTION / NOTICE / HINT
HINT:
*: Use the Techstream.
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 DLC3* |
HINT:
If the display indicates a communication malfunction, inspect the DLC3.
When any CAN communication system DTCs are output, perform troubleshooting for the CAN communication system first.
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4. |
CHECK DTC AND FREEZE FRAME DATA* |
(a) Check for DTCs.
Click here
![2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
Powertrain > Engine > Trouble Codes
(b) Check for freeze frame data.
Click here
HINT:
Record or print DTCs and freeze frame data if necessary.
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5. |
CLEAR DTC AND FREEZE FRAME DATA* |
(a) Clear the DTCs and freeze frame data.
Click here
Powertrain > Engine > Clear DTCs
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6. |
CONDUCT VISUAL INSPECTION |
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7. |
SELECT CHECK MODE DIAGNOSIS* |
(a) Change the ECM from normal mode to check mode.
Click here
Powertrain > Engine > Utility
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Tester Display |
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Check Mode |
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8. |
CONFIRM PROBLEM SYMPTOMS |
(a) Confirm the problem symptoms.
HINT:
If the engine does not start, first perform the "Check DTC" procedure and "Conduct Basic Inspection" procedure below.
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Result |
Proceed to |
|---|---|
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Malfunction does not occur |
A |
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Malfunction occurs |
B |
| B |
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9. |
SIMULATE SYMPTOMS |
HINT:
Refer to Symptom Simulation.
Click here
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10. |
CHECK DTC* |
(a) Check for DTCs.
Click here
Powertrain > Engine > Trouble Codes
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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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11. |
REFER TO DTC CHART |
HINT:
Refer to Diagnostic Trouble Code Chart.
Click here
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12. |
CONDUCT BASIC INSPECTION |
(a) Conduct basic inspection.
Click here
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Result |
Proceed to |
|---|---|
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Malfunctioning parts not confirmed |
A |
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Malfunctioning parts confirmed |
B |
| B |
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13. |
REFER TO PROBLEM SYMPTOMS TABLE |
HINT:
Refer to Problem Symptoms Table.
Click here
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Result |
Proceed to |
|---|---|
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Malfunctioning circuit confirmed |
A |
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Malfunctioning parts confirmed |
B |
| B |
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14. |
CHECK ECM POWER SOURCE CIRCUIT |
(a) Check the ECM power source circuit.
Click here
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15. |
CONDUCT CIRCUIT INSPECTION |
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Result |
Proceed to |
|---|---|
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Malfunction not confirmed |
A |
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Malfunction confirmed |
B |
| B |
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16. |
CHECK FOR INTERMITTENT PROBLEMS |
(a) Check for intermittent problems.
Click here
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17. |
CONDUCT PARTS INSPECTION |
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18. |
IDENTIFY PROBLEM |
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19. |
ADJUST AND/OR REPAIR |
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20. |
CONDUCT CONFIRMATION TEST |
| NEXT |
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END |
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