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 flow chart, 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.
   VOLTAGE
   
   

   -	OK	NG
   Voltage	11 V or more	Less than 11 V

   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  
   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 
   1. Visually check that the air filter is not excessively dirty or oily.
   NOTE: If necessary, clean the filter with compressed air. First blow from the inside thoroughly, then blow from the outside of the filter.
   1. NG: REPAIR OR REPLACE 
   2. OK: GO TO NEXT STEP 
   Fig 1: Checking Air Filter

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. CHECK IDLE SPEED (See  ENGINE  ) 
   1. NG: PROCEED TO  PROBLEM SYMPTOMS TABLE  
   2. OK: GO TO NEXT STEP 
6. CHECK IGNITION TIMING (See  ENGINE  ) 
   1. NG: PROCEED TO  ON-VEHICLE INSPECTION  AND CONTINUE TO TROUBLESHOOT 
   2. OK: PROCEED TO  PROBLEM SYMPTOMS TABLE  
7. CHECK FUEL PRESSURE (See  ON-VEHICLE INSPECTION  ) 
   1. NG: PROCEED TO  ON-VEHICLE INSPECTION  AND CONTINUE TO TROUBLESHOOT 
   2. OK: GO TO NEXT STEP 
8. CHECK FOR SPARK (See  INSPECTION  ) 
   1. NG: PROCEED TO  ON-VEHICLE INSPECTION  AND CONTINUE TO TROUBLESHOOT 
   2. OK: PROCEED TO  PROBLEM SYMPTOMS TABLE