Cummins ISB4.5 CM2150 Fault Code: 3697 PID: SID 254 SPN: 630 FMI: 12 Engine Control Module Calibration Memory – Bad Intelligent Device or Component.
Circuit Description
The engine control module (ECM) has internal diagnostics that continuously run and check for software errors or incompatibilities.
Component Location
The ECM mounting location varies, depending on engine model, and may be mounted either on or off engine.
Conditions for Running the Diagnostics
This diagnostic runs continuously when the keyswitch is in the ON position.
Conditions for Setting the Fault Codes
This fault code is triggered when the internal ECM diagnostics detect a software or calbration error.
Action Taken When the Fault Code is Active
-The ECM illuminates the red STOP ENGINE lamp and/or the malfunction indicator lamp (MIL) immediately when the diagnostic runs and fails.
-The engine may not start.
Conditions for Clearing the Fault Code
-To validate the repair, start the engine and let it idle for 1 minute.
-The ECM will turn off the red STOP ENGINE lamp immediately after the diagnostic runs and passes.
-The ECM will turn off the MIL after three consecutive ignition cycles that the diagnostic runs and passes.
-This fault code and MIL can also be cleared with INSITE™ electronic service tool.
Possible Causes
-A malfunction of the ECM software or calibration error.
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