Basic Inspection

When the 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 

   BATTERY VOLTAGE
   
   

   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 WILL CRANK 

   HINT:

   See CHECK MODE PROCEDURE  .

   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.
      NOTE: If necessary, clean the filter with compressed air. First blow from the inside thoroughly, then blow from the outside of the filter.
      Fig 1: Checking Air Filter

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE AIR FILTER 

   OK: GO TO NEXT STEP 

5. CHECK IDLING SPEED 

   HINT:

   See ON-VEHICLE INSPECTION .

   NG: PROCEED TO  PROBLEM SYMPTOMS TABLE  

   OK: GO TO NEXT STEP 

6. CHECK FUEL PRESSURE 

   HINT:

   See ON-VEHICLE INSPECTION (for Fuel system).

   NG: PROCEED TO FUEL SYSTEM AND CONTINUE TO TROUBLESHOOT 

   OK: GO TO NEXT STEP 

7. CHECK FOR SPARK 

   HINT:

   See IGNITION SYSTEM (for Ignition system).

   NG: PROCEED TO IGNITION SYSTEM AND CONTINUE TO TROUBLESHOOT 

   OK: PROCEED TO  PROBLEM SYMPTOMS TABLE