SFI SYSTEM MIL Circuit

DESCRIPTION

The Malfunction Indicator Lamp (MIL) is used to indicate vehicle malfunctions detected by the ECM.

The MIL operation can be checked visually. When the ignition switch is turned to ON, the MIL should be illuminated and should then turn off after the engine is started. If the MIL remains illuminated or is not illuminated, conduct the following troubleshooting procedure using the GTS.

PROCEDURE

1. Click here

   CHECK MIL ILLUMINATION

   
   

   1. Check the illumination condition of the MIL.

      Result
      MIL Condition Proceed to Illuminates → Turns off Ignition switch ON → After engine is started A Other than above - B

   
   
   • A

     CHECK FOR INTERMITTENT PROBLEMSClick here

   • BClick here
2. Click here

   READ VALUE USING GTS

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Check the communication between the GTS and ECM.

      Tip:

      It can be checked using the "Engine" item of the Data List.

      Result
      Result Proceed to Communication is possible A Communication is not possible B

   
   
   • AClick here
   • B

     GO TO VC OUTPUT CIRCUITClick here

3. Click here

   CHECK WHETHER DTC OUTPUT RECURS

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Enter the following menus: System Select / Health Check.

   5. Check if any DTCs have been detected. Note down any DTCs.

      
      
      1. Powertrain > Engine > Trouble Codes
      2. 
         
      3. 
         

      Result
      Result Proceed to DTCs are not output A Any DTCs is output B

      Tip:

      Check for detected DTCs output from other ECUs which relate to the MIL.

   
   
   • AClick here
   • B

     REPAIR CIRCUIT INDICATED BY OUTPUT

4. Click here

   PERFORM ACTIVE TEST USING GTS

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Enter the following menus: Body Electrical / Combination Meter / Active Test / Check Engine Indicator.

      
      
      1. Body Electrical > Combination Meter > Active Test

         Tester Display
         Check Engine Indicator

      2. 
         
         1. 
            
      3. 
         
         11. 
             

   5. Check the status of the MIL while performing the Active Test.

      Result
      Result Proceed to Changes A Does not change B

   
   
   • A

     REPLACE ECMClick here

   • B

     REPLACE COMBINATION METER ASSEMBLYClick here