How To Proceed With Troubleshooting

HINT:

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

1. VEHICLE BROUGHT TO WORKSHOP 
2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 11 to 14 V 

   If the voltage is below 11V, recharge or replace the battery before proceeding.

3. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
   1. Use the intelligent tester to check if the CAN Communication System is functioning normally.

      Result 

      COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM
      
      

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

   B: Go to CAN COMMUNICATION SYSTEM  (see DIAGNOSTIC TROUBLE CODE CHART )

   A: GO TO NEXT STEP 

4. CHECK INDICATOR LIGHT 
5. CHECK FOR DTC* 
   1. Check for DTCs (see DTC CHECK / CLEAR  ).
   2. Clear the DTCs (see DTC CHECK / CLEAR  ).
   3. Recheck for DTCs (see DTC CHECK / CLEAR  ).

      Result 

      RESULT REFERENCE
      
      

      Result	Proceed to
      DTC does not reoccur	A
      DTC reoccurs	B

   B: Go to step   8 

6. PROBLEM SYMPTOMS TABLE 

   Result 

   PROBLEM SYMPTOMS
   
   

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

   B: Go to step   8 

   A: GO TO NEXT STEP 

7. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. Terminals of ECM (see TERMINALS OF ECM  ).
   2. DATA LIST / ACTIVE TEST (see DATA LIST / ACTIVE TEST  ).
8. REPAIR OR REPLACE 
9. CONFIRMATION TEST 

   END