Code No.P0604: ECU system (RAM error)


OPERATION


A/T-ECU checks the RAM for any abnormality.

DIAGNOSIS CODE SET CONDITIONS


If an abnormality is detected with the RAM in the ECU (1 drive cycle), code No.P0604 is set.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. Check whether the diagnosis code is set again.
Check again if the diagnosis code is set.

Q. Is diagnosis code No.P0604 set?
Replace the A/T-ECU.
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction).