How To Proceed With Troubleshooting

HINT: 

• Use these procedures to troubleshoot the engine immobilizer system.

• *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT: Go to next step 

2. INSPECT BATTERY VOLTAGE 

   Standard voltage

   11 to 14 V

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

   NEXT: Go to next step 

3. CRANK ENGINE FOR MORE THAN 10 SECONDS 

   NEXT: Go to next step 

4. CHECK FOR DTC* 
   1. Check for DTCs and make a note of any codes that are output. Refer to DTC CHECK / CLEAR .
   2. Clear the DTC. Refer to DTC CHECK / CLEAR .
   3. Recheck for DTCs. Refer to DTC CHECK / CLEAR . Based on the DTCs output above, try to cause the output of the same SFI system DTC, LIN communication system DTC, steering lock system DTC or engine immobilizer system DTC by simulating the symptoms indicated by the DTC.
      RESULT:
      
      

      Result	Proceed to
      DTC is not output	A
      SFI system DTC is output	B
      LIN communication system DTC is output	C
      Steering lock system DTC is output	D
      Engine immobilizer system DTC is output	E

      B → Go to SFI SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART 

      C → Go to LIN COMMUNICATION SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART 

      D → Go to STEERING LOCK SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART 

      E → Go to DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART  

      A: Go to next step 

5. 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 7 

   A: Go to next step 

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

      NEXT: Go to next step 

7. ADJUST, REPAIR OR REPLACE 

   NEXT: Go to next step 

8. CONFIRMATION TEST 

   NEXT → END