Inspection Procedure

HINT

Read freeze frame data using the Techstream The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction

1. CHECK FUEL LEAK (HIGH PRESSURE SIDE) 
   1. Check around and beneath the car for gasoline leaks, fumes, etc.

      OK: No gasoline leaks present. 

   NG: REPAIR OR REPLACE FUEL LEAK POINT 

   OK: Go to next step 

2. CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0087) 
   1. Connect the Techstream to the DLC3
   2. Turn the engine switch on (IG) and turn the Techstream ON
   3. Enter the following menus Powertrain / Engine / Trouble Codes
   4. Read the DTCs.

      Result 

      RESULT CHART
      
      

      Result	Proceed to
      DTC P0087 is output	A
      DTC P0087 and other DTCs are output	B

      HINT

      If any DTCs other than P0087 are output, troubleshoot those DTCs first

   B: GO TO DTC CHART  (See DIAGNOSTIC TROUBLE CODE CHART )

   A: Go to next step 

3. CHECK MISFIRE COUNT 
   1. Connect the Techstream to the DLC3
   2. Turn the engine switch on (IG) and turn the Techstream ON
   3. Start the engine
   4. Enter the following menus. Powertrain / Engine / Active Test / Control the Injection Way / Direct
   5. Allow the engine to idle
   6. Monitor all of the misfire count values that are displayed on the Techstream. Powertrain / Engine / Data List / Misfire / Cylinder #1 Misfire count to Cylinder #8 Misfire count.

      If no misfire counts occur for any of the cylinders, perform the following procedure

      1. Move the shift lever to D
      2. Monitor all of the misfire rate values that are displayed on the Techstream

         Result 

         RESULT CHART
         
         

         Misfire Count	Proceed to
         No misfire counts, or misfire counts occur randomly in all cylinders	A
         Misfire counts occur in a particular cylinder	B

   B: REPLACE FUEL INJECTOR FOR DIRECT INJECTION  (See REMOVAL )

   A: Go to next step 

4. INSPECT FUEL RELIEF VALVE 
   1. Connect the Techstream to the DLC3
   2. Turn the engine switch on (IG) and turn the Techstream ON.
   3. Start the engine
   4. Enter the following menus. Powertrain / Engine / Data List / Fuel Press
   5. Record the Fuel Press value.
   6. Turn the engine switch off
   7. Wait for 10 seconds.
   8. Turn the engine switch on (IG) and turn the Techstream ON.
   9. Enter the following menus. Powertrain / Engine / Data List / Fuel Press
   10. Compare the Fuel Press value recorded with the engine running to the Fuel Press value currently shown on the Techstream.

       Result 

       RESULT CHART
       
       

       Inspection Result	Proceed to
       Fuel Press value is maintained	A
       Fuel Press value drops	B

   B: REPLACE FUEL RELIEF VALVE  (See REMOVAL )

   A: Go to next step 

5. INSPECT INJECTOR DRIVER (NO. 1 AND NO. 2) 
   1. Replace the No 1 and No. 2 injector drivers with known good ones from another vehicle
      NOTE: Do not disconnect and reconnect the connectors with the engine switch on (IG), as the injector driver (EDU) may be damaged.
   2. Connect the Techstream to the DLC3
   3. Start the engine
   4. Clear DTCs (See DTC CHECK/CLEAR )
   5. Perform the driving test.
   6. Enter the following menus. Powertrain / Engine / Trouble Codes
   7. Read the DTCs

      Result 

      RESULT CHART
      
      

      Result	Proceed to
      DTC P0087 is output	A
      DTC is not output	B

   B: REPLACE INJECTOR DRIVER (NO. 1 AND NO. 2)  (See REMOVAL )

   A: Go to next step 

6. REPLACE FUEL PUMP (FOR HIGH PRESSURE OF BANK 1 AND BANK 2) 

   HINT.

   Replace the fuel pump for high pressure (See ON-VEHICLE INSPECTION ).

7. CHECK WHETHER DTC OUTPUT RECURS 
   1. Connect the Techstream to the DLC3
   2. Turn the engine switch on (IG) and turn the Techstream ON.
   3. Clear DTCs
   4. Start the engine.
   5. Perform the driving test
   6. Enter the following menus. Powertrain / Engine / Trouble Codes.
   7. Read the DTCs

      Result 

      RESULT CHART
      
      

      Result	Proceed to
      DTC P0087 is output	A
      DTC is not output	B

   B: END 

   A: REPLACE ECM  (See REMOVAL )