Recommended Procedure:

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Connect the scan tool.
Key on, engine off.
Access and monitor the FICMSYNC PID while cranking the engine.

No FICM synchronization while cranking the engine with the ICP, RPM and VPWR signals correct usually indicates a loss of the CMP or CKP synchronization signal. refer to the appropriate pinpoint test for diagnosis. Refer to CONTROL SYSTEM DIAGNOSTIC SHEET REFERENCE for normal operating values.