DTC P0605: Internal Control Module Read Only Memory (ROM) Error [08/2015 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Clear the DTCs (Refer to DTC CHECK / CLEAR [08/2015 - ] ).

   HINT: 

   Write down the currently output DTCs before clearing them.

5. Turn the engine switch off and turn the Techstream off.
6. Disconnect the Techstream.
7. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
8. Connect the cable to the negative (-) battery terminal.
9. Connect the Techstream to the DLC3.
10. Turn the engine switch on (IG).
11. Turn the Techstream on.
12. Enter the following menus: Powertrain / ECT / Trouble Codes.
13. Read the DTCs using the Techstream.
    RESULT
    
    

    Result	Proceed to
    DTCs are not output	A
    DTC P0605 is output	B

Result: 

A 

CHECK FOR INTERMITTENT PROBLEMS 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 08/2017] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - ] )

Result: 

B 

REPLACE TCM 

(Refer to REMOVAL [08/2015 - ] )