Tire Pressure Warning System - How To Proceed With Troubleshooting
TIRE PRESSURE WARNING SYSTEM - HOW TO PROCEED WITH TROUBLESHOOTING
Use the following procedure to troubleshoot the tire pressure warning system.
*: Use the GTS.
| 1.VEHICLE BROUGHT TO WORKSHOP |
Turn the engine switch off.
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
Set the pressure of each tire to the specified value ().
- Make sure the tires are cooled down when adjusting the tire pressure.
Display "ID Tire Inflation Pressure" in the Data List and check that tire pressure data matches the adjusted tire pressure.
- It takes a few minutes to display the updated tire pressure data.
Perform initialization ().
- The warning threshold value changes depending on the driving conditions during initialization. As a result, the tire pressure warning light may not turn off even if the tire pressure is adjusted to the specified pressure.
- Result:
| Condition | Proceed to |
| Tire pressure warning light remains on | A |
| Tire pressure warning light goes off | B |
| 3.CHECK ECU CONNECTED TO CAN BUS* |
Check the ECUs connected to the CAN bus (for LHD: , for RHD: ).
- Result:
| Result | Proceed to |
| No malfunction appears | A |
| Malfunction appears (for LHD) | B |
| Malfunction appears (for RHD) | C |
| | GO TO CAN COMMUNICATION SYSTEM () |
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| | GO TO CAN COMMUNICATION SYSTEM () |
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Check for DTCs ().
- Result:
| Result | Proceed to |
| DTC is output | A |
| DTC is not output | B |
Refer to Diagnostic Trouble Code Chart ().
Refer to Problem Symptoms Table ().
Refer to Electronic Circuit Inspection Procedure ().
Repair or replace parts based on the diagnosis result.
Check the Data List to confirm that the tire inflation pressure has been received ().
Perform initialization ().
Confirm that the initialization has been completed.