LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2020 >> Camaro SS, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Controls And Fuel - 3.6L (LGX) - Diagnostic Information And Procedures (P0443 - P3400) And Symptoms) >> Diagnostic Information and Procedures >> DTC P050D >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different variant/trim than selected.

During a cold start, the engine control module (ECM) commands dual-pulse mode during Open Loop operation to improve cold start emissions. In dual-pulse mode, the fuel injectors are energized twice during each injection event. As with misfire diagnosis, in dual-pulse mode the ECM monitors the crankshaft position sensor and the camshaft position sensors to calculate crankshaft rotation speed. In normal operation, optimum fuel delivery during dual-pulse mode produces a steady crankshaft rotation speed. If the variations exceed a calibrated value, the DTC sets.

scientia non olet · About LEMON Manuals