How To Proceed With Troubleshooting

HINT: 

• Use the following procedure to troubleshoot the cruise control system.
• *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT: Go to next step 

2. INSPECT AUXILIARY BATTERY VOLTAGE 
   1. Measure the auxiliary battery voltage with the power switch off.

      Standard Voltage

      11 to 14 V

      If the voltage is below 11 V, replace or recharge the auxiliary battery before proceeding to the next step.

      NEXT: Go to next step 

3. CHECK COMMUNICATION FUNCTION OF CONTROLLER AREA NETWORK (CAN)* 
   1. Use the Techstream to check if the CAN communication system is functioning normally.

      Result

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

      B → GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 

      A: Go to next step 

4. CHECK FOR DTC* 

   Refer to DTC Check / Clear. Refer to DTC CHECK / CLEAR .

   1. Check for DTCs and note any codes that are output.
   2. Clear the DTCs.
   3. Recheck for DTCs. Try to reproduce the DTCs by duplicating the conditions indicated by the DTCs.

      Result

      Result	Proceed to
      DTC does not reoccur	A
      DTC reoccurs	B

      B → GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART  

      A: Go to next step 

5. PROBLEM SYMPTOMS TABLE 

   Refer to Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE .

   Result

   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 

6. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. Terminals of ECU. Refer to TERMINALS OF ECU 
   2. Data List / Active Test. Refer to DATA LIST / ACTIVE TEST 

      NEXT: Go to next step 

7. ADJUST, REPAIR OR REPLACE 

   NEXT: Go to next step 

8. CONFIRMATION TEST 

   NEXT → END