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 NEXT 
3. DTC CHECK AND CLEAR* 

   Refer to the DTC CHECK / CLEAR (See DTC CHECK / CLEAR  ).

4. DTC CHECK (OTHER THAN MPX AND CAN SYSTEM DTC)* 

   Result 

   RESULT REFERENCE CHART
   
   

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

   A:  GO TO STEP  6

   B: Go to next step 

5. DTC CHART 

   Refer to the DIAGNOSTIC TROUBLE CODE CHART (See DIAGNOSTIC TROUBLE CODE CHART  ).

   GO TO STEP  9

6. PROBLEM SYMPTOM CONFIRMATION 

   Result 

   RESULT REFERENCE CHART
   
   

   Result	Proceed to
   Symptom occurs	A
   Symptom does not occur	B

   A:  GO TO STEP  8

   B: Go to next step 

7. SYMPTOM SIMULATION 

   Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

   Go to step  6

8. PROBLEM SYMPTOMS TABLE 

   Refer to the PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE  ).

9. CIRCUIT INSPECTION* 
10. TERMINALS OF ECM 

    Refer to TERMINALS OF ECM (See TERMINALS OF ECM  ).

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

    END