P0603

DTC P0603 INTERNAL CONTROL MODULE KEEP ALIVE MEMORY ERROR





DETECTING CONDITION

DTC CONFIRMATION PROCEDURE
1) Turn ignition switch OFF.
2) Clear DTC with ignition switch ON and then turn ignition switch OFF.
3) Start engine and run it at idle if possible.
4) Check pending DTC in "ON BOARD TEST" or "PENDING DTC" mode and DTC in "DTC" mode.

INSPECTION
Substitute a known-good ECM and recheck.