| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM10000000257AE |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [09/2022 - 11/2022] |
| Title: METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (except 12.3 Inch Display): HOW TO PROCEED WITH TROUBLESHOOTING; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022] | ||
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HOW TO PROCEED WITH TROUBLESHOOTING |
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the meter / gauge system.
- *: Use the GTS.
PROCEDURE
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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2. |
CUSTOMER PROBLEM ANALYSIS |
HINT:
- In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
- Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
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The following 5 items are important points for problem analysis:
What
Vehicle model, system name
When
Date, time, occurrence frequency
Where
Road conditions
Under what conditions?
Driving conditions, weather conditions
How did it happen?
Problem symptoms
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3. |
INSPECT AUXILIARY BATTERY VOLTAGE |
(a) Measure the auxiliary battery voltage.
Standard Voltage:
for HV Model: 11 to 14 V (Ignition switch off)
for Gasoline Model: 11 to 14 V (Always)
If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.
(b) Check the fuses and relays.
(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.
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4. |
CHECK CAN COMMUNICATION SYSTEM* |
(a) Using the GTS, check for CAN communication system DTCs.
for Gasoline Model TMC Made: Click here
![2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model TMC Made): DIAGNOSIS SYSTEM](/t3Portal/stylegraphics/info.gif)
for Gasoline Model except TMC Made: Click here
for HV Model: Click here
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Result |
Proceed to |
|---|---|
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CAN DTCs are not output |
A |
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CAN DTCs are output |
B |
| B |
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GO TO CAN COMMUNICATION SYSTEM for Gasoline Model TMC Made: Click here
for Gasoline Model except TMC Made: Click here
for HV Model: Click here
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5. |
CHECK FOR DTC* (METER / GAUGE SYSTEM) |
(a) Check for DTCs.
Body Electrical > Combination Meter > Trouble Codes
|
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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6. |
CONFIRM MODEL |
(a) Choose the model to be inspected.
|
Result |
Proceed to |
|---|---|
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for TMC Made |
A |
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for TMMMS Made |
B |
| B |
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7. |
CHECK VEHICLE CONTROL HISTORY (RoB)* |
(a) Using the GTS, check for Vehicle Control History (RoB).
Body Electrical > Combination Meter > Utility
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Tester Display |
|---|
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Vehicle Control History (RoB) |
(b) Make a note of the output Vehicle Control History (RoB).
|
Result |
Proceed to |
|---|---|
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Vehicle Control History (RoB) is not output |
A |
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Vehicle Control History (RoB) is output |
B |
| B |
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8. |
PROBLEM SYMPTOM CONFIRMATION |
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9. |
SYMPTOM SIMULATION |
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10. |
PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
NOTICE:
The problem symptoms table of the meter/gauge system is written based on the assumption that all related systems and ECUs of each function are operating correctly. Therefore, confirm that all related systems and ECUs are functioning correctly before using the problem symptoms table.
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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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11. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Terminals of ECU.
Click here
(b) Data List / Active Test.
Click here
(c) Operation Check.
Click here
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12. |
CIRCUIT INSPECTION |
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13. |
ADJUST, REPAIR OR REPLACE |
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14. |
CONFIRMATION TEST |
| NEXT |
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END |
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