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.

NOTE: Carry out this check with the engine stopped and ignition switch OFF.
1. CHECK BATTERY VOLTAGE 
   BATTERY 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 
   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: Cleaning Air Filter With Compressed Air
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Visually check that the air filter is not excessively dirty or oily.
   1. NG: CLEAN OR REPLACE 
   2. OK: Go to next step. 
5. CHECK IDLE SPEED (See  ENGINE ASSEMBLY (1ZZ-FE)  )  .
   1. NG: PROCEED TO PROBLEM SYMPTOMS TABLE  PROBLEM SYMPTOMS TABLE  
   2. OK: Go to next step. 
6. CHECK IGNITION TIMING (See  ENGINE ASSEMBLY (1ZZ-FE)  )  .
   1. NG: PROCEED TO  ENGINE ASSEMBLY (1ZZ-FE)  AND CONTINUE TO TROUBLESHOOT 
   2. OK: PROCEED TO PROBLEM SYMPTOMS TABLE  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  ON-VEHICLE INSPECTION  ) 
   1. NG: PROCEED TO  ON-VEHICLE INSPECTION  AND CONTINUE TO TROUBLESHOOT 
   2. OK: PROCEED TO PROBLEM SYMPTOMS TABLE  PROBLEM SYMPTOMS TABLE