Code NO. P0603: EEP ROM MALFUNCTION
FUNCTION
To check whether the information such as the idle learned value and so on is stored in the memory of the engine-A/T-ECU.
TROUBLE JUDGMENT
Check Condition
Ignition switch is in ON position.
Judgement Criterion
The latest learned data that was flashed while the ignition switch was in OFF position are not stored correctly
PROBABLE CAUSE
Failed the engine-A/T-ECU
DIAGNOSIS
STEP 1. M.U.T.-III diagnosis code
Reconfirmation of diagnosis code.
Q. Is the diagnosis code set?
Replace engine-A/T-ECU.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points
).