How To Proceed With Troubleshooting

HINT:

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

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

   Refer to PRECAUTION .

   1. Check for output DTCs.

      Result 

      CAN COMMUNICATION SYSTEM
      
      

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

      HINT:

      The ECM of this system is connected to the CAN communication system. Therefore, before starting troubleshooting, be 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 

   CHECK (OTHER THAN CAN SYSTEM DTC)
   
   

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

   A: GO TO STEP   7 

   B: GO TO NEXT STEP 

6. DTC TABLE 

   Refer to DIAGNOSTIC TROUBLE CODE TABLE  .

   NEXT: GO TO STEP   10 

7. PROBLEM SYMPTOM CONFIRMATION 

   Result 

   RESULT REFERENCE TABLE
   
   

   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 .

9. PROBLEM SYMPTOMS TABLE 

   Refer to PROBLEM SYMPTOMS TABLE  .

10. CIRCUIT INSPECTION 
11. TERMINALS OF ECM 

    Refer to TERMINALS OF ECM  .

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

    NEXT: END