Toyota Corolla Cross: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the lighting system.
- *: Use the GTS.
PROCEDURE
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1. | VEHICLE BROUGHT TO WORKSHOP |
|
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| 2. |
CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK |
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?
Driving conditions, weather conditions
How did it happen?
Problem symptoms
|
| 3. |
PRE-CHECK |
(a) Measure the auxiliary battery voltage with the ignition switch off.
Standard Voltage:
11 to 14 V
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.
|
| 4. |
CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Using the GTS, check for CAN communication system DTCs.
for HEV Model: Click here
.gif)
for Gasoline Model: Click here
|
Result | Proceed to |
|---|---|
|
CAN DTCs are not output |
A |
| CAN DTCs are output |
B |
| B |
.gif) | GO TO CAN COMMUNICATION SYSTEM for HEV Model: Click here for Gasoline Model: Click here
|
|
| 5. |
PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
|
Result | Proceed to |
|---|---|
|
Fault is not listed in Problem Symptoms Table |
A |
| Fault is listed in Problem Symptoms Table |
B |
| B |
| GO TO PROBLEM SYMPTOMS TABLE |
|
| 6. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Operation Check.
Click here
(b) Terminals of ECU.
Click here
(c) Data List / Active Test.
Click here
(d) Inspection.
|
| 7. |
ADJUST, REPAIR OR REPLACE |
|
| 8. |
CONFIRMATION TEST |
| NEXT | | END |
READ NEXT:
Operation Check
OPERATION CHECK INSPECT ILLUMINATED ENTRY SYSTEM OPERATION
NOTICE: Perform this inspection with the customize parameters at the initial settings.
Click here HINT: Perform this inspection with th
Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE LIGHTING SYSTEM (INT)
NOTICE:
When the customer requests a change in a function, first make sure that the function can be customized.
Be sure to make a note o
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
Before replacing the main body ECU (multiplex network body ECU) or certification ECU (smart key ECU assembly)*1, refer to Registration.
*1: w/ Smart Key Syst
SEE MORE:
ECU Power Source Circuit
DESCRIPTION
When the ignition switch is turned to ON, auxiliary battery voltage is applied
to terminal MREL of the ECM through the coil of the EFI-MAIN relay. This causes
the EFI-MAIN relay to close, which supplies power to terminal +B of the TCM.
WIRING DIAGRAM
Refer to DTC U010087.
Click h
Front Air Outlet Damper Control Servo Motor Actuator Stuck Off (B14037F)
DESCRIPTION The No. 1 air conditioning radiator damper servo sub-assembly sends pulse signals to inform the air conditioning amplifier assembly of the damper position.
The air conditioning amplifier assembly activates the motor (normal or reverse) based on these signals to move the air outlet damp
