Code No. P0603: EEPROM Malfunction

FUNCTION

To check whether the information such as the idle learned value and so on is stored in the memory of engine-ECU.

TROUBLE JUDGMENT

Check Condition

Ignition switch is in "ON" position

Judgement Criterion

When the abnormal EEPROM memory data is detected.

PROBABLE CAUSE

Failed engine-ECU

DIAGNOSIS

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

Q. Is the check result normal?

	Replace the engine-ECU. When the engine-ECU is replaced, write the chassis number (Refer to GROUP 00 - Precautions Before Service - How to Perform Chassis Number Writing ). After replacing the engine-ECU, register the injector identification code and learn fuel injection (Refer to GROUP 00 - Precautions Before Service - What The Common Rail Engine Learns ).

	Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).