[amidgeha]

Engine Speed Input Circuit Range/Performance

The Engine Control Module (ECM) monitors the engine speed through the Crankshaft Position (CKP) sensor with the engine running, and send signal to the Transmission Control Module (TCM).

Cause:
Faulty Camshaft Position Sensor
Faulty Crankshaft Position (CKP) Sensor
Communication error between the Engine Control Module (ECM) and Transmission Control Module (TCM)
Transmission Assembly

Symptoms:
Check engine light