DTC P0604: Random Access Memory (RAM): Procedure

CHECK DTC
1. Clear DTC. Refer to DTC CHECK / CLEAR .
2. Turn the engine switch off.
3. Disconnect the battery negative terminal and wait for 1 minute. Refer to PRECAUTION .
4. Connect the battery negative terminal. Refer to PRECAUTION .
5. Turn the engine switch on (IG).
6. Connect the Techstream to the DLC3.
7. Turn the Techstream on.
8. Enter the following menus: Powertrain / Engine / Trouble Codes.
9. Check DTC.
  OK
  
  P0604 is not present.
NG → See step 3

OK → See step 2
CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS
REPLACE ECM. Refer to REMOVAL