How To Proceed With Troubleshooting

HINT:

• Use this procedure to troubleshoot the engine immobilizer system.
• The hand-held tester should be used in steps  4 and  6.

1. VEHICLE BROUGHT TO WORKSHOP 

   Go to next step. 

2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK (SEE  CUSTOMER PROBLEM ANALYSIS CHECK   ) 

   Go to next step. 

3. CRANK ENGINE FOR MORE THAN 10 SECONDS 

   Go to next step. 

4. CHECK FOR DTCS 
   1. Check for DTCs and note any codes that are output.
   2. Delete the DTC.
   3. Recheck for DTCs. Based on the DTC output in (a), try to force output of the same SFI system DTC or engine immobilizer system DTC by simulating the operation indicated by the DTC.
      1. If the DTC does not reoccur, proceed to A.
      2. If the SFI system DTC reoccurs, proceed to B.
      3. If the engine immobilizer system DTC reoccurs, proceed to C.

   B: Go to SFI SYSTEM (SEE  PRECAUTION  ) 

   C: Go to step   7 

   A: Go to next step. 

5. PROBLEM SYMPTOMS TABLE (SEE  PROBLEM SYMPTOMS TABLE   ) 
   PROBLEM SYMPTOMS DESCRIPTION
   
   

   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 (SEE DATA LIST/ACTIVE TEST  )
      1. Inspection with the hand-held tester (DATA LIST)
      2. Inspection with the hand-held tester (ACTIVE TEST)
   2. Terminals of ECU (SEE TERMINALS OF ECU  )

   NEXT: Go to next step. 

7. ADJUST, REPAIR OR REPLACE 

   Go to next step. 

8. CONFIRMATION TEST 

   END