Inspection Procedure

HINT:

Read freeze frame data using a Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. READ OUTPUT DTC (DTC P0604) 
   1. Connect a Techstream to the DLC3.
   2. Turn the ignition switch to ON.
   3. Turn the tester ON.
   4. Clear DTC (See DTC CHECK / CLEAR  ).
   5. Turn the ignition switch to OFF and turn the tester OFF.
   6. Disconnect the tester.
   7. Disconnect the cable from the battery negative (-) terminal and wait for 1 minute.
   8. Connect the cable to the battery negative (-) terminal,
   9. Connect the tester to the DLC3.
   10. Turn the ignition switch to ON.
   11. Turn the tester ON.
   12. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes.
   13. Read DTCs.

       Result 

       RESULT REFERENCE
       
       

       Result	Proceed to
       No output	A
       P0604	B

   B : REPLACE ECM  (See REMOVAL  )

   A : CHECK FOR INTERMITTENT PROBLEMS  (See CHECK FOR INTERMITTENT PROBLEMS  )