P0603

ENGINE CONTROL MODULE KEEP ALIVE MEMORY ERROR - P0603

Monitoring Procedure
The intent of the diagnostic is to detect malfunctions of the ECM due to corruption of the factory programmed settings. The ECM is programmed by storing a data value in two separate memory locations. the locations are compared by the diagnostic and if they do not match the data has been corrupted.

NOTE:
- Due to the nature of this diagnostic the ECM shuts down and will not communicate with the scan tool, hence the code is not accessible without the use of Jaguar Diagnostic Equipment.

- Where an ECM is renewed ensure only a correctly, "PECUS" programmed unit, obtainable from Jaguar Dealerships, is fitted.