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 (See CAN COMMUNICATION SYSTEM ).

   1. Check for output DTCs.

      Result 

      RESULT
      
      

      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, 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
   
   

   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
   
   

   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 SYMPTOM SIMULATION (See HOW TO PROCEED WITH TROUBLESHOOTING ).

   NEXT: Go to step  7

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