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	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 IDLE SPEED 
   1. Check the idling speed. Refer to ON-VEHICLE INSPECTION - Step 8 .

      NG → TROUBLESHOOT IDLING SPEED AND PROCEED TO NEXT STEP 

      OK: Go to next step 

6. CHECK FUEL PRESSURE 
   1. Check the fuel pressure. Refer to ON-VEHICLE INSPECTION - Step 2 .

      NG → TROUBLESHOOT FUEL PRESSURE AND PROCEED TO NEXT STEP 

      OK: Go to next step 

7. CHECK FOR SPARKS 
   1. Check for sparks. Refer to PROCEDURE - Step 24 .

      NG → TROUBLESHOOT SPARK AND PROCEED TO NEXT STEP 

      OK → PROCEED TO  PROBLEM SYMPTOMS TABLE