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 CHART
   
   

   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 IDLING SPEED 
   1. Check the idling speed (See INSPECTION ).

   NG: TROUBLESHOOT IDLING SPEED AND PROCEED TO NEXT STEP 

   OK: Go to next step 

6. CHECK FUEL PRESSURE 
   1. Check the fuel pressure (See ON-VEHICLE INSPECTION ).

   NG: TROUBLESHOOT FUEL PRESSURE AND PROCEED TO NEXT STEP 

   OK: Go to next step 

7. CHECK FOR SPARKS 
   1. Check for sparks (See DTC P0327 KNOCK SENSOR 1 CIRCUIT LOW INPUT (BANK 1 OR SINGLE SENSOR); DTC P0328 KNOCK SENSOR 1 CIRCUIT HIGH INPUT (BANK 1 OR SINGLE SENSOR); DTC P0332 KNOCK SENSOR 2 CIRCUIT LOW INPUT (BANK 2); DTC P0333 KNOCK SENSOR 2 CIRCUIT HIGH INPUT (BANK 2)  ).

   NG: TROUBLESHOOT SPARK AND PROCEED TO NEXT STEP 

   OK:  PROCEED TO PROBLEM SYMPTOMS TABLE