| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001HBIJ |
| Model Year Start: 2020 | Model: GR Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System): HOW TO PROCEED WITH TROUBLESHOOTING; 2020 - 2022 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 09/2022] | ||
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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 |
(a) Interview the customer and confirm the problem.
Click here
![2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 - ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING](/t3Portal/stylegraphics/info.gif)
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3. |
CHECK DTC AND FREEZE FRAME DATA* |
(a) Check and record DTCs and Freeze Frame Data.
for DTC Check / Clear: Click here
for Freeze Frame Data: Click here
Chassis > Brake > Trouble Codes
(b) Clear the DTCs and Freeze Frame Data.
for DTC Check / Clear: Click here
for Freeze Frame Data: Click here
Chassis > Brake > Clear DTCs
(c) Reconfirm the DTCs.
(1) Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data.
for DTC Check / Clear: Click here
for Freeze Frame Data: Click here
Chassis > Brake > Trouble Codes
HINT:
-
When CAN communication system DTCs are output, repair the CAN communication system first.
Click here
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If DTC U010087, U012587 and/or U012687 are among the CAN communication DTCs that are output, first use the Data List to check for a momentary open circuit.
Click here
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If the Techstream cannot communicate with the skid control ECU (brake actuator assembly), inspect the CAN communication system.
Click here
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If there is no response from the skid control ECU (brake actuator assembly), inspect the IG1 circuit and +BS circuit of the skid control ECU (brake actuator assembly).
Click here
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Result |
Proceed to |
|---|---|
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DTCs are not output. (Problem symptom occurs.) |
A |
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DTCs are output. |
B |
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DTCs are not output. (Problem symptom does not occur.) |
C |
| B |
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| C |
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4. |
PROBLEM SYMPTOMS TABLE |
(a) Check if the problem symptoms are listed in the problem symptoms table.
Click here
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Result |
Proceed to |
|---|---|
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The problem symptoms are not listed in the problem symptoms table. |
A |
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The problem symptoms are listed in the problem symptoms table. |
B |
| B |
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5. |
PERFORM TROUBLESHOOTING BASED ON PROBLEM SYMPTOM* |
(a) DATA LIST / ACTIVE TEST
Click here
(b) ON-VEHICLE INSPECTION
Click here
(c) TERMINALS OF ECU
Click here
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6. |
REPAIR OR REPLACEMENT |
CAUTION:
Refer to the precautions before performing adjustment, repair or replacement.
Click here
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7. |
RECONFIRM DTC* |
(a) Clear the DTCs.
Click here
Chassis > Brake > Clear DTCs
(b) Turn the ignition switch off.
(c) Turn the ignition switch to ON.
(d) Check if the same DTCs are output.
Click here
Chassis > Brake > Trouble Codes
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Result |
Proceed to |
|---|---|
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DTCs are not output. |
A |
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DTCs are output. |
B |
| B |
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REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
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8. |
CONFIRMATION TEST* |
| NEXT |
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END |
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9. |
REPAIR PERFORM TROUBLESHOOTING BASED ON PROBLEM SYMPTOM* |
(a) Confirm the problem symptoms table and perform troubleshooting.
Click here
| NEXT |
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10. |
REPAIR CIRCUIT INDICATED BY OUTPUT DTC* |
(a) Confirm the diagnostic trouble code chart and perform troubleshooting.
Click here
| NEXT |
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