P0603

DTC P0603 INTERNAL CONTROL MODULE KEEP ALIVE MEMORY ERROR

SYSTEM DESCRIPTION
Internal control module is installed in ECM.





DETECTING CONDITION

DTC CONFIRMATION PROCEDURE
1) Connect scan tool to DLC with ignition switch OFF.
2) Turn ON ignition switch and clear DTC, pending DTC and freeze frame data by using scan tool.
3) Turn ignition switch OFF
4) Start engine and run it for 10 sec.
5) Check DTC by using scan tool.

TROUBLESHOOTING
Substitute a known-good ECM and recheck.
Service Precautions