How To Proceed With Troubleshooting

HINT:

• Use the following procedures to troubleshoot the cruise control system.
• *: Use Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 
2. PROBLEM SYMPTOM CONFIRMATION 
3. CHECK CAN COMMUNICATION SYSTEM* 

   Refer to PRECAUTION (See PRECAUTION ).

   1. Check for output DTCs.

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   CAN DTC is not output	A
   CAN DTC is output	B

   HINT:

   The hybrid vehicle control ECU of this system is connected to the CAN communication system.

   Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN communication system.

   B: PROCEED TO "CAN COMMUNICATION SYSTEM" 

   A: GO to next step. 

4. DTC CHECK AND CLEAR* 

   Refer to DTC CHECK / CLEAR  .

5. DTC CHECK (OTHER THAN CAN SYSTEM DTC)* 

   Result 

   RESULT REFERENCE
   
   

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

   A:  GO TO STEP  7

   B: GO to next step. 

6. DTC CHART 

   Refer to DIAGNOSTIC TROUBLE CODE CHART  .

   NEXT:  GO TO STEP  10

7. PROBLEM SYMPTOM CONFIRMATION 

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   Symptom occurs	A
   Symptom does not occur	B

   A:  GO TO STEP  9

   B: GO to next step. 

8. SYMPTOM SIMULATION 

   Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE (See HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS ).

   NEXT:  GO to step  7

9. PROBLEM SYMPTOMS TABLE 

   Refer to PROBLEM SYMPTOMS TABLE  .

10. CIRCUIT INSPECTION* 
11. TERMINALS OF ECU 

    Refer to TERMINALS OF ECU  .

12. IDENTIFICATION OF PROBLEM 
13. REPAIR OR REPLACE 
14. CONFIRMATION TEST 

    NEXT: END