DTC P0606-04: Control Module Processor System Internal Failure; DTC P0606-29: Control Module Processor Signal Invalid; DTC P0606-2A: Control Module Processor Signal Stuck in Range; DTC P0606-47: Control Module Processor Watchdog/Safety MCU Failure [11/2016 - ]: Procedure
WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
- READ OUTPUT DTC (DTC P0606-04, P0606-29 OR P0606-47)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Clear the DTCs.
Powertrain > Engine > Clear DTCs
- Turn the ignition switch off and turn the Techstream 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 ignition switch to ON.
- Turn the Techstream on.
- Wait 1 second or more.
- Enter the following menus: Powertrain / Engine / Trouble Codes.
- Read the DTCs.
Powertrain > Engine > Trouble Codes
Result Proceed to DTCs are not output A DTC P0606-04, P0606-29 or P0606-47 is output B
Result:
A
CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS [11/2016 - ]
Result:
B
REPLACE ECM. Refer to REMOVAL [11/2016 - ]