Basic Inspection

When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out in 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. Therefore, using this check is essential when engine troubleshooting.

1. CHECK BATTERY VOLTAGE 
   NOTE: Carry out this check with the engine stopped and ignition switch off.

   Result 

   RESULT CHART
   
   

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

   NG: CHARGE OR REPLACE BATTERY 

   OK: Go to Next Step 

2. CHECK WHETHER ENGINE CRANKS 

   NG: PROCEED TO PROBLEM SYMPTOMS TABLE 

   OK: Go to Next Step 

3. CHECK WHETHER ENGINE STARTS 

   NG: GO TO STEP  6

   OK: Go to Next Step 

4. CHECK AIR FILTER 
   1. Visually check that the air filter is not excessively contaminated with dirt or oil.

   NG: REPLACE AIR FILTER 

   OK: Go to Next Step 

5. CHECK IDLING SPEED 
   1. Check the idling speed (See ON-VEHICLE INSPECTION ).

   NG: TROUBLESHOOT IDLING SPEED AND PROCEED TO NEXT STEP 

   OK: Go to Next Step 

6. CHECK FUEL PRESSURE 
   1. Check the fuel pressure (See ON-VEHICLE INSPECTION ).

   NG: TROUBLESHOOT FUEL PRESSURE AND PROCEED TO NEXT STEP 

   OK: Go to Next Step 

7. CHECK FOR SPARKS 
   1. (See step  6 under DTC P0300 Random / Multiple Cylinder Misfire Detected; DTC P0301 Cylinder 1 Misfire Detected; DTC P0302 Cylinder 2 Misfire Detected; DTC P0303 Cylinder 3 Misfire Detected; DTC P0304 Cylinder 4 Misfire Detected; DTC P0305 Cylinder 5 Misfire Detected; DTC P0306 Cylinder 6 Misfire Detected  )

   NG: TROUBLESHOOT SPARK AND PROCEED TO NEXT STEP 

   OK: PROCEED TO PROBLEM SYMPTOMS TABLE