Basic Inspection

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

1. CHECK BATTERY VOLTAGE 
   NOTE: Carry out this check with the engine stopped and ignition switch OFF.
   Fig 1: Checking Battery Voltage

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   1. NG: CHARGE OR REPLACE BATTERY 
   2. OK: GO TO NEXT STEP. 
2. CHECK IF ENGINE WILL CRANK 
   1. NG: PROCEED TO PROBLEM SYMPTOMS TABLE ON  PROBLEM SYMPTOMS TABLE  
   2. OK: GO TO NEXT STEP. 
3. CHECK IF ENGINE STARTS 
   1. NG: Go to step   7 
   2. OK: GO TO NEXT STEP. 
4. CHECK AIR FILTER 

   Visually check that the air filter is not excessively dirty or oily.

   1. NG: REPLACE AIR FILTER 
   2. OK: GO TO NEXT STEP. 
5. CHECK IDLE SPEED (See  ON-VEHICLE INSPECTION  ) 
   1. NG: PROCEED TO  PROBLEM SYMPTOMS TABLE  
   2. OK: GO TO NEXT STEP. 
6. CHECK IGNITION TIMING (See ) 
   1. NG: PROCEED TO  ADJUSTMENT  AND CONTINUE TO TROUBLESHOOT 
   2. OK: GO TO NEXT STEP. 

      PROCEED TO PROBLEM SYMPTOMS TABLE ON  PROBLEM SYMPTOMS TABLE  

7. CHECK FUEL PRESSURE (See  ON-VEHICLE INSPECTION  ) 
   1. NG: PROCEED TO  PRECAUTION  AND CONTINUE TO TROUBLESHOOT 
   2. OK: GO TO NEXT STEP. 
8. CHECK FOR SPARK (See  IGNITION SYSTEM  ) 
   1. NG: PROCEED TO  IGNITION SYSTEM  AND CONTINUE TO TROUBLESHOOT 
   2. OK: GO TO NEXT STEP. 

      PROCEED TO PROBLEM SYMPTOMS TABLE ON  PROBLEM SYMPTOMS TABLE