SFI SYSTEM BASIC INSPECTION

When a malfunction cannot be confirmed by the DTC check, troubleshooting should be carried out for all circuits considered to be possible causes of the problem. In many cases, by performing the basic engine check shown in the following flowchart, the location of the problem can be found quickly and efficiently. Therefore, using this check is essential when performing engine troubleshooting.

1. CHECK BATTERY VOLTAGE

   Note

   Conduct this check with the engine stopped and the ignition switch off.

   Result

   Result	Proceed to
   11 V or higher	OK
   Below 11 V	NG

   
   

   NG

   CHARGE OR REPLACE BATTERY

   OK

2. CHECK WHETHER ENGINE WILL CRANK

   
   

   NG

   PROCEED TO PROBLEM SYMPTOMS TABLE

   OK

3. CHECK WHETHER ENGINE STARTS

   
   

   NG

   GO TO STEP 6

   OK

4. CHECK AIR CLEANER FILTER ELEMENT

   
   

   1. Visually check that the air cleaner filter element is not excessively contaminated with dirt or oil.

      
      

      NG

      REPLACE AIR CLEANER FILTER ELEMENT

      OK

5. CHECK IDLING SPEED

   
   

   NG

   TROUBLESHOOT IDLING SPEED AND PROCEED TO NEXT STEP

   OK

6. CHECK FUEL PRESSURE

   
   

   NG

   TROUBLESHOOT FUEL PRESSURE AND PROCEED TO NEXT STEP

   OK

7. CHECK FOR SPARK

   
   

   NG

   TROUBLESHOOT SPARK AND PROCEED TO NEXT STEP

   OK

   PROCEED TO PROBLEM SYMPTOMS TABLE