Toyota Corolla Cross: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the occupant classification system.
- *: Use the GTS.
PROCEDURE
|
1. | VEHICLE BROUGHT TO WORKSHOP |
|
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| 2. |
CUSTOMER PROBLEM ANALYSIS |
(a) Confirm problem symptoms.
Click here .gif)
|
| 3. |
INSPECT AUXILIARY BATTERY VOLTAGE |
(a) Measure the battery voltage with the ignition switch off.
Standard voltage:
11 to 14 V
HINT:
- A simple method to determine whether the battery is discharged is to operate the horn.
- If the voltage is below 11 V, recharge or replace the battery before proceeding.
(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 CAN COMMUNICATION SYSTEM* |
(a) Using the GTS, check if the CAN communication system is functioning normally.
OK:
CAN communication system is functioning normally.
HINT:
- Refer to Communication Bus Check in CAN Communication System.
- for HEV Model:
Click here
- for Gasoline Model:
Click here
- for HEV Model:
- The airbag ECU assembly is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there are no malfunctions in the CAN communication system.
| NG | .gif) | GO TO CAN COMMUNICATION SYSTEM for HEV Model: Click here for Gasoline Model: Click here
|
|
| 5. |
CHECK PASSENGER AIRBAG ON/OFF INDICATOR |
(a) Refer to Operation Check.
Click here
|
| 6. |
CHECK DTC* |
(a) Check for DTCs.
Body Electrical > SRS Airbag > Trouble CodesHINT:
Record or print DTCs if necessary.
|
Result | Proceed to |
|---|---|
|
No DTCs are output | A |
|
Airbag system DTCs are output |
B |
| Occupant classification system DTCs are output |
C |
| A |
| GO TO PROBLEM SYMPTOMS TABLE |
| B |
| GO TO AIRBAG SYSTEM |
|
| 7. |
CLEAR DTC* |
NOTICE:
Make sure to record any output Freeze Frame Data and Vehicle Control History (RoB) codes before clearing them and checking the DTC again.
(a) Clear the DTCs.
Body Electrical > SRS Airbag > Clear DTCs
|
| 8. |
CHECK DTC* |
(a) Check for DTCs.
Body Electrical > SRS Airbag > Trouble CodesHINT:
Record or print DTCs if necessary.
OK:
DTCs are not output.
| NG | | GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
| 9. |
CHECK VEHICLE CONTROL HISTORY* |
(a) Check for vehicle control history.
Body Electrical > SRS Airbag > Utility|
Tester Display |
|---|
| Vehicle Control History (RoB) |
|
Result | Proceed to |
|---|---|
|
Vehicle control history is not output |
A |
| Vehicle control history is output |
B |
| A |
| GO TO PROBLEM SYMPTOMS TABLE |
|
| 10. |
CLEAR VEHICLE CONTROL HISTORY* |
NOTICE:
Make sure to record any output Freeze Frame Data and Vehicle Control History (RoB) codes before clearing them and checking the DTC again.
(a) Clear the vehicle control history.
Body Electrical > SRS Airbag > Utility|
Tester Display |
|---|
| Vehicle Control History (RoB) |
|
| 11. |
CHECK VEHICLE CONTROL HISTORY* |
(a) Check for vehicle control history.
Body Electrical > SRS Airbag > Utility|
Tester Display |
|---|
| Vehicle Control History (RoB) |
|
Result | Proceed to |
|---|---|
|
Vehicle control history is not output |
A |
| Vehicle control history is output |
B |
| A |
| USE SIMULATION METHOD TO CHECK |
| B |
| GO TO VEHICLE CONTROL HISTORY |
READ NEXT:
Operation Check
OPERATION CHECK CHECK SRS WARNING LIGHT (a) Primary check
(1) Turn the ignition switch to ON and check that the SRS warning light turns on.
(2) Turn the ignition switch off. Wait for at least 2 s
Initialization
INITIALIZATION DESCRIPTION (a) Zero point of the occupant classification sensors may deviate in the following situations. To ensure sensor accuracy, be sure to perform Occupant Detection Sensor Zero P
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
SEE MORE:
Main Body ECU Communication Stop Mode
DESCRIPTION
Detection Item
Symptom
Trouble Area
Main Body ECU Communication Stop Mode
Communication stop for "Main Body" is indicated on the "Communication
Bus Check" screen of the GTS.
Click here
Inspection
INSPECTION
PROCEDURE
1. INSPECT BRAKE VACUUM CHECK VALVE ASSEMBLY
(a) Check that there is ventilation from the booster side
to the engine side, and no ventilation from the engine side to the booster
side of the brake vacuum check valve assembly.
HINT:
If the result is not
