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.
   3. Recheck for DTCs. Based on the DTC output above, try to cause the output of the same SFI system DTC or engine immobilizer system DTC by simulating the original activity indicated by the DTC.
      RESULT:
      
      

      Result	Proceed to
      DTC output does not reoccur	A
      SFI system DTC output reoccurs	B
      Engine immobilizer system DTC output reoccurs	C

      B → Go to SFI SYSTEM 

      D → Go to step 7 

      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 
   3. Inspection. Refer to INSPECTION

      NEXT: Go to next step 

7. ADJUST, REPAIR OR REPLACE 

   NEXT: Go to next step 

8. CONFIRMATION TEST 

   NEXT → END