Toyota Corolla Cross: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
*: Use the GTS.
PROCEDURE
| 1. |
VEHICLE BROUGHT TO WORKSHOP |
|
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| 2. |
CUSTOMER PROBLEM ANALYSIS |
|
| 3. |
CONNECT GTS 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.
|
| 4. |
CHECK DTC AND FREEZE FRAME DATA* |
(a) Check for DTCs.
Powertrain > Engine > Trouble Codes(b) Check for Freeze Frame Data.
Click here
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HINT:
Record or print DTCs and Freeze Frame Data if necessary.
|
| 5. |
CHECK VEHICLE CONTROL HISTORY (RoB) AND VEHICLE CONTROL HISTORY FREEZE FRAME DATA* |
(a) Check for Vehicle Control History (RoB) and Vehicle Control History Freeze Frame Data.
Powertrain > Engine > Utility|
Tester Display |
|---|
| Vehicle Control History (RoB) |
HINT:
Print Vehicle Control History (RoB) and Vehicle Control History Freeze Frame Data if necessary.
|
| 6. |
CLEAR DTC AND FREEZE FRAME DATA* |
(a) Clear the DTCs and Freeze Frame Data.
Powertrain > Engine > Clear DTCs
|
| 7. |
CONDUCT VISUAL INSPECTION |
|
| 8. |
SELECT CHECK MODE DIAGNOSIS* |
(a) Change the ECM from normal mode to check mode.
Powertrain > Engine > Utility|
Tester Display |
|---|
| Check Mode |
|
| 9. |
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.
|
Result | Proceed to |
|---|---|
|
Malfunction does not occur |
A |
| Malfunction occurs |
B |
| B |
.gif) | GO TO STEP 11 |
|
| 10. |
SIMULATE SYMPTOMS |
HINT:
Refer to Symptom Simulation.
Click here
|
| 11. |
CHECK DTC* |
(a) Check for DTCs.
Powertrain > Engine > Trouble Codes|
Result | Proceed to |
|---|---|
|
DTCs are output | A |
|
DTCs are not output | B |
| B |
| GO TO STEP 13 |
|
| 12. |
REFER TO DTC CHART |
HINT:
Refer to Diagnostic Trouble Code Chart.
|
| 13. |
CONDUCT BASIC INSPECTION |
(a) Conduct basic inspection.
Click here
|
Result | Proceed to |
|---|---|
|
Malfunctioning parts not confirmed |
A |
| Malfunctioning parts confirmed |
B |
| B |
| GO TO STEP 18 |
|
| 14. |
REFER TO PROBLEM SYMPTOMS TABLE |
HINT:
Refer to Problem Symptoms Table.
Click here
|
Result | Proceed to |
|---|---|
|
Malfunctioning circuit confirmed |
A |
| Malfunctioning parts confirmed |
B |
| B |
| GO TO STEP 18 |
|
| 15. |
CHECK ECM POWER SOURCE CIRCUIT |
(a) Check the ECM power source circuit.
Click here
|
| 16. |
CONDUCT CIRCUIT INSPECTION |
|
Result | Proceed to |
|---|---|
|
Malfunction not confirmed |
A |
| Malfunction confirmed |
B |
| B |
| GO TO STEP 19 |
|
| 17. |
CHECK FOR INTERMITTENT PROBLEMS |
(a) Check for intermittent problems.
Click here
|
| 18. |
CONDUCT PARTS INSPECTION |
|
| 19. |
IDENTIFY PROBLEM |
|
| 20. |
ADJUST AND/OR REPAIR |
|
| 21. |
CONDUCT CONFIRMATION TEST |
| NEXT | | END |
READ NEXT:
Check For Intermittent Problems
CHECK FOR INTERMITTENT PROBLEMS HINT: Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the GTS when the ECM is in check mode. In check mode, the ECM uses 1 tri
Basic Inspection
CAUTION / NOTICE / HINT When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out for all circuits considered to be possible causes of the problem. In many cases, by
Registration
REGISTRATION CAUTION / NOTICE / HINT PROCEDURE
1. VIN (VEHICLE IDENTIFICATION NUMBER) NOTICE: The Vehicle Identification Number (VIN) must be written to a replacement ECM.
HINT: The VIN is a 17-di
SEE MORE:
Inspection
INSPECTION PROCEDURE 1. INSPECT NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY
(a) Turn the roller by hand to check that it turns smoothly. HINT:
If the roller does not turn smoothly, replace the No. 1 valve rocker arm sub-assembly.
2. INSPECT VALVE LASH ADJUSTER ASSEMBLY
NOTICE
Blower Motor Circuit
DESCRIPTION The blower motor with fan sub-assembly is operated by signals from the air conditioning amplifier assembly. Blower motor speed signals are transmitted in accordance with changes in the duty ratio.
If the airflow volume is low or the blower speed cannot be changed, the following factors
