How To Proceed With Troubleshooting

HINT:

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

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT 

2. PROBLEM SYMPTOM CONFIRMATION 

   NEXT 

3. CHECK MULTIPLEX COMMUNICATION SYSTEM* 

   Refer to how to proceed with troubleshooting (See HOW TO PROCEED WITH TROUBLESHOOTING ).

   1. Check for output DTCs.

      Result 

      RESULT REFERENCE
      
      

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

      HINT:

      The ECM of this system is connected to the multiplex communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the multiplex communication system.

   B : PROCEED TO "MULTIPLEX COMMUNICATION SYSTEM" 

   A : Go to next step. 

4. CHECK CAN COMMUNICATION SYSTEM* 

   Refer to the 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 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. 

5. DTC CHECK AND CLEAR* 

   Refer to the DTC CHECK / CLEAR  .

   NEXT 

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

   Refer to the DTC CHECK / CLEAR  .

   Result 

   RESULT REFERENCE
   
   

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

   A :  GO TO STEP  8

   B : Go to next step. 

7. DTC CHART 

   Refer to the DIAGNOSTIC TROUBLE CODE CHART  .

   NEXT :  GO TO STEP  11

8. PROBLEM SYMPTOM SIMULATION 

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   Fault Is not listed in problem symptoms table	A
   Fault is listed In problem symptoms table	B

   B :  GO TO STEP  10

   A : Go to next step. 

9. SYMPTOM SIMULATION 

   Refer to the electronic circuit inspection procedure (see ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

   NEXT 

10. PROBLEM SYMPTOMS TABLE 

    Refer to the PROBLEM SYMPTOMS TABLE  .

    NEXT 

11. CIRCUIT INSPECTION 

    Refer to the P0500  .

    Refer to the TC AND CG TERMINAL CIRCUIT  .

    NEXT 

12. TERMINALS OF ECU 

    Refer to the TERMINALS OF ECU  .

    NEXT 

13. IDENTIFICATION OF PROBLEM 

    NEXT 

14. REPAIR OR REPLACE 

    NEXT 

15. CONFIRMATION TEST 

    NEXT : END