Code No. P0607: Engine-ECU (sub CPU) Malfunction


FUNCTION



  • The main microcomputer detects errors in the sub microcomputer used for monitoring.

TROUBLE JUDGMENT


Check Conditions
  • 2 seconds later after the ignition switch has been in "ON" position or the engine has started up.
  • Battery positive voltage is 10 V or more
Judgment Criterion
  • The main microcomputer detects a monitoring microcomputer error.

FAIL-SAFE AND BACKUP FUNCTION



  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted (Output restriction).
  • The open angle of the accelerator pedal is restricted.
  • The throttle valve is closed (Fixed opening degree).
  • The EGR control is stopped (fully closed).
  • The DPF regeneration is prohibited.
  • The AS&G control is prohibited.

PROBABLE CAUSE



  • Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code

  • After erasing the diagnosis code through M.U.T.-III, ignition switch is "ON" position and confirm whether the diagnosis code is set.

Q. Is the diagnosis code set?
Replace the engine-ECU.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).