Inspection Procedure

Read freeze frame data using 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. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0604) 
   1. Connect Techstream to the DLC3.
   2. Turn the ignition switch on (IG).
   3. Turn the tester on.
   4. Select the following menu items: Powertrain / Engine and ECT / Trouble Code.
   5. Read the DTCs.

   Result 

   RESULT TABLE
   
   

   Display (DTC Output)	Proceed to
   P0604	A
   No output	B

   B: CHECK FOR INTERMITTENT PROBLEMS  (See CHECK FOR INTERMITTENT PROBLEMS

   A: REPLACE ECM  (See REMOVAL )