How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the engine immobilizer system.
• *: Use the intelligent tester or Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 
2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 11 to 14 V 

   If the voltage is below 11V, 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 DTC CHECK / CLEAR  ).
   2. Clear the DTC (see DTC CHECK / CLEAR  ).
   3. Recheck for DTCs (see 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 REFERENCE
      
      

      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 immobiliser system DTC is output	E

   B: Go to SFI SYSTEM  (See DIAGNOSTIC TROUBLE CODE CHART )

   C: Go to LIN COMMUNICATION SYSTEM  (See DIAGNOSTIC TROUBLE CODE CHART )

   D: Go to STEERING LOCK SYSTEM  (See DIAGNOSTIC TROUBLE CODE CHART )

   E: Go to  DIAGNOSTIC TROUBLE CODE CHART   ( ) 

   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. DATA LIST / ACTIVE TEST (see DATA LIST / ACTIVE TEST  )
   2. Terminals of ECU (see TERMINALS OF ECU  )
7. ADJUST, REPAIR OR REPLACE 
8. CONFIRMATION TEST 

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