How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the tire pressure warning system.
• *: Use the intelligent tester.

1. VEHICLE BROUGHT TO WORKSHOP 
2. CUSTOMER PROBLEM ANALYSIS 
   1. Interview the customer to confirm the trouble.

      HINT:

      It is important to collect as much specific information as possible from the customer to allow for a quick repair.

3. ADJUST TIRE PRESSURE 
   1. Turn the ignition switch OFF.
   2. Connect the intelligent tester to the DLC3.
   3. Turn the ignition switch ON and the tester ON.
   4. Following the display on the intelligent tester, select the "DATA LIST".
   5. Read the "TIREPRESS" values.
   6. Adjust all tire pressures to the standard values (see INSPECTION ).
   7. Check the DATA LIST (see DATA LIST / ACTIVE TEST ).

      HINT:

      • It takes about 2 or 3 minutes to display the updated tire pressure data.
      • If the problem is that the tire pressure decreases, wait until all of the tire pressure data is received by the ECU. If the data is received, the tire pressure warning light will turn off.

      Result 

      RESULT REFERENCE CHART
      
      

      Condition	Proceed to
      Tire pressure warning light goes off.	A
      Tire pressure warning light remains on.	B

   A: GO TO step   9

   B: GO TO next step. 

4. CHECK FOR DTC* 
   1. Check for DTC (see DTC CHECK / CLEAR ).

      Result 

      RESULT REFERENCE CHART
      
      

      Condition	Proceed to
      DTC is not output	A
      DTC is output	B

   A: GO TO step   6

   B: GO TO next step. 

5. DTC CHART 
   1. Refer to the DIAGNOSTIC TROUBLE CODE CHART .

   NEXT: GO TO step   8

6. PROBLEM SYMPTOMS TABLE 
   1. Refer to the PROBLEM SYMPTOMS TABLE .
7. CIRCUIT INSPECTION* 
   1. Refer to the ELECTRONIC CIRCUIT INSPECTION PROCEDURE .
8. REPAIR OR REPLACE 
   1. Repair or replace parts based on the diagnosis result.
9. CONFIRMATION TEST* 
   1. Check the DATA LIST to confirm that the tire inflation pressure has been received (see DATA LIST / ACTIVE TEST ).
   2. Perform initialization (see INITIALIZATION ).
   3. Confirm that the initialization has been completed.

   NEXT: END