| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000028GYY |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [11/2022 - ] |
| Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 - ] | ||
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HOW TO PROCEED WITH TROUBLESHOOTING |
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the power steering system.
- *: Use the Techstream.
PROCEDURE
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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2. |
INSPECT BATTERY |
(a) Turn the ignition switch off.
(b) Measure the voltage of the battery.
Standard Voltage:
11 to 14 V
HINT:
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
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3. |
CHECK DTC AND FREEZE FRAME DATA* |
HINT:
Refer to DTC Check / Clear.
Click here
![2020 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2019 - ]; POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model): DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
Chassis > EMPS > Trouble Codes
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4. |
PROBLEM SYMPTOM CONFIRMATION |
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Result |
Proceed to |
|---|---|
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Symptom does not occur. |
A |
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Symptom occurs. |
B |
| B |
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5. |
SYMPTOM SIMULATION |
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6. |
CHECK CAN COMMUNICATION SYSTEM* |
(a) Check for DTCs.
Click here
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Result |
Proceed to |
|---|---|
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CAN communication system DTCs are not output. |
A |
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CAN communication system DTCs are output. |
B |
HINT:
- If any CAN communication system DTCs are output, perform troubleshooting for the CAN communication system first.
- If communication to the power steering ECU assembly cannot be established through the Techstream, inspect terminals CANH and CANL of the DLC3 and the power steering ECU assembly, and the IG circuit of the power steering ECU assembly.
| B |
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PROCEED TO CAN COMMUNICATION SYSTEM
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7. |
CHECK FOR DTC* |
(a) Check for DTCs.
Click here
Chassis > EMPS > Trouble Codes
HINT:
Refer to Diagnostic Trouble Code Chart when any DTCs are output.
Click here
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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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8. |
PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
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Result |
Proceed to |
|---|---|
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Fault is not listed in Problem Symptoms Table. |
A |
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Fault is listed in Problem Symptoms Table. |
B |
| B |
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9. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Refer to Terminals of ECU.
Click here
(b) Refer to Data List / Active Test.
Click here
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10. |
REPAIR OR REPLACE |
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11. |
CONFIRMATION TEST |
| NEXT |
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END |
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