SFI SYSTEM BASIC INSPECTION

When the malfunction is not confirmed by the DTC check, perform troubleshooting on all circuits considered to be possible causes of the problem. In many cases, by carrying out the basic engine check shown in the following flowchart, the location of the problem can be found quickly and efficiently. This check is essential when troubleshooting the engine.

1. CHECK BATTERY VOLTAGE

   Note

   Perform the battery check with the engine stopped and ignition switch OFF.

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

   
   

   NG

   RECHARGE OR REPLACE BATTERY

   OK

2. CHECK IF ENGINE CRANKS

   
   

   NG

   PROCEED TO PROBLEM SYMPTOMS TABLE

   OK

3. CHECK IF ENGINE STARTS

   
   

   NG

   GO TO STEP 6

   OK

4. CHECK AIR FILTER

   
   

   1. Perform a visual check and make sure that the air filter is not contaminated with dirt or oil.

      
      

      NG

      REPLACE AIR FILTER

      OK

5. CHECK IDLING SPEED

   
   

   NG

   PROCEED TO PROBLEM SYMPTOMS TABLE

   OK

6. CHECK FUEL PRESSURE

   
   

   NG

   CONTINUE TO TROUBLESHOOT

   OK

7. CHECK FOR SPARK

   
   

   NG

   CONTINUE TO TROUBLESHOOT

   OK

   PROCEED TO PROBLEM SYMPTOMS TABLE