Toyota Corolla Cross: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
*: 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.
- 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?
Running conditions, driving conditions, weather conditions
How did it happen?
Problem symptoms
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|
3. |
INSPECT BATTERY VOLTAGE |
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
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4. |
INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Check if CAN communication DTCs are output.
Click here .gif)
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Result |
Proceed to |
|---|---|
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CAN communication DTCs are not output. |
A |
|
CAN communication DTCs are output. |
B |
| B |  |
GO TO CAN COMMUNICATION SYSTEM |
|
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5. |
CHECK FOR DTC* |
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Result |
Proceed to |
|---|---|
|
DTCs are not output. |
A |
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DTCs are output. |
B |
| B | |
GO TO DTC CHART |
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6. |
CHECK FOR VEHICLE CONTROL HISTORY (RoB)* |
HINT:
Refer to Vehicle Control History (RoB).
Click here
|
Result |
Proceed to |
|---|---|
|
Vehicle control history (RoB) is not output. |
A |
|
Vehicle control history (RoB) is output. |
B |
| B | |
GO TO VEHICLE CONTROL HISTORY (RoB) |
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7. |
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 parts are not confirmed. |
A |
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Malfunctioning parts are confirmed. |
B |
| B | |
GO TO STEP 13 |
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8. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
HINT:
Refer to Data List / Active Test.
Click here
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Result |
Proceed to |
|---|---|
|
Malfunctioning parts are not confirmed. |
A |
|
Malfunctioning parts are confirmed. |
B |
| B | |
GO TO STEP 13 |
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9. |
CHECK ECM CIRCUIT |
HINT:
Refer to Terminals of ECM.
Click here
| NG | |
GO TO STEP 13 |
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10. |
CHECK FOR INTERMITTENT PROBLEMS |
HINT:
Refer to Symptom Simulation.
Click here
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11. |
CONDUCT PARTS INSPECTION |
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12. |
IDENTIFY PROBLEM |
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13. |
ADJUST AND/OR REPAIR |
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14. |
CONDUCT CONFIRMATION TEST |
| NEXT | |
END |
READ NEXT:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms. If
multiple suspected areas are listed, the potential causes of the symptoms are
listed in
Terminals Of Ecm
TERMINALS OF ECM
HINT:
The standard normal voltage and resistance between each pair of ECM terminals
is shown in the table below. The appropriate conditions for checking each pair of
terminals
Diagnosis System
DIAGNOSIS SYSTEM
DLC3 (Data Link Connector 3)
(a) Check the DLC3.
Click here
BATTERY VOLTAGE
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, replace or recharge the battery.
SEE MORE:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected
Removal
REMOVAL CAUTION / NOTICE / HINT COMPONENTS (REMOVAL)
Procedure Part Name Code
1 DRAIN ENGINE COOLANT
- -
- 2
VACUUM SWITCHING VALVE ASSEMBLY
25860 -
- -
3 AIR CLEANER CAP WITH AIR CLEANER HOSE
-
