How To Proceed With Troubleshooting

HINT:

Use these procedures to troubleshoot the engine immobilizer system.

*: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 
2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 

   11 to 14 V 

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

3. CRANK ENGINE FOR MORE THAN 10 SECONDS 
4. CHECK FOR DTC* 
   1. Check for DTCs and make a note of any codes that are output (see DIAGNOSIS SYSTEM ).
   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 REFERENCE
      
      

      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 

   For 2AZ-FE, see SFI SYSTEM

   For 2GR-FE, see SFI SYSTEM

   D: Go to step   7 

   A: Go TO NEXT STEP. 

5. PROBLEM SYMPTOMS TABLE 

   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   7 

   A: Go TO NEXT STEP. 

6. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. See DATA LIST / ACTIVE TEST 
   2. See TERMINALS OF ECU 
   3. See INSPECTION 
7. ADJUST, REPAIR OR REPLACE 
8. CONFIRMATION TEST 

   END