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Home >> Chevrolet >> 2005 >> Chevy Express H1500, Van Passenger >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Control System - 4.3L (DTC P0016 To DTC P0160)) >> Diagnosis >> DTC P0016 >> Circuit Description

Circuit Description

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The powertrain control module (PCM) supplies a 12-volt reference circuit and a low reference circuit to both the crankshaft position (CKP) sensor and the camshaft position (CMP) sensor. The CKP sensor sends a signal to the PCM with each revolution of the crankshaft. The CMP sensor sends a signal to the PCM with each revolution of the camshaft. This DTC monitors the CKP signal and the CMP signal to determine if they are synchronized. If both signals are not observed by the PCM within a narrow period of time, the PCM will determine that an error has occurred and DTC P0016 will set.

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