Code No.P0574: Cruise Control Vehicle Speed High


DIAGNOSIS CODE SET CONDITIONS



PROBABLE CAUSES



  • Malfunction of the diesel fuel system.
  • Malfunction of the engine-ECU.

DIAGNOSIS PROCEDURE

STEP 1. Check the diesel fuel system diagnosis code.
Using M.U.T.-III, perform diesel fuel system diagnosis code (Refer to GROUP 13D - Troubleshooting, Diagnosis Function ).

Q. Is any diagnosis code set?
Repair the diesel fuel system (Refer to GROUP 13D - Troubleshooting, Inspection Chart for Diagnosis Trouble Code ). Then go to Step 3.
Go to Step 2.

STEP 2. Read the diagnosis code.
Using M.U.T.-III, read the diagnosis code of the cruise control system (Refer to ).

Q. Is diagnosis code No.P0574 set?
Replace the engine-ECU (Refer to GROUP 13D - Engine-ECU ) When the Engine-ECU is replaced, register the encrypted code (Refer to GROUP 42C - Troubleshooting, ID Code Registration Necessity Judgment Table ). Then go to Step 3.
It can be assumed that this malfunction is intermittent (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points, How to Cope with Intermittent Malfunction ).

STEP 3. Read the diagnosis code.
Using M.U.T.-III, read the diagnosis code of the cruise control system (Refer to ).

Q. Is diagnosis code No.P0574 set?
Return to Step 1.
This procedure is complete.