DTC P0604: Random Access Memory (RAM) [09/2014 - 11/2017]: Procedure
WARNING: This page is about a different car, the 2017 Lexus RC 350, 2017 Lexus RC 300, 2016 Lexus RC 350, 2016 Lexus RC 300, and 2015 Lexus RC 350. However, it is still accessible from the selected car via links, so may be relevant.
- READ OUTPUT DTC (DTC P0604)
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Clear the DTCs.
Refer to DTC CHECK / CLEAR [09/2014 - 11/2017]
Powertrain > Engine > Clear DTCs
- Turn the Techstream off.
- Turn the engine switch off.
- Disconnect the Techstream.
- Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
- Connect the cable to the negative (-) battery terminal.
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Wait for 16 seconds or more.
- Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
- Read the DTCs.
Powertrain > Engine > Trouble Codes
Result
Result Proceed to DTCs are not output A DTC P0604 is output B
Result:
A
CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS [09/2014 - 11/2017]
Result:
B
REPLACE ECM. Refer to REMOVAL [09/2014 - 11/2017]