Camshaft Position Sensor

Fig 1: Camshaft Position Sensor

Courtesy of DAIMLERCHRYSLER CORPORATION

Fig 2: Camshaft Sprocket

Courtesy of DAIMLERCHRYSLER CORPORATION

The camshaft position sensor provides cylinder identification to Powertrain Control Module (PCM). See Fig 1 . The sensor generates pulses. The PCM determines crankshaft position from camshaft position sensor and crankshaft position sensor inputs. The PCM uses input to determine fuel injection synchronization and to determine which ignition coil to energize.

The camshaft position sensor detects when a step in camshaft sprocket passes beneath it. See Fig 2 . When sensor detects step, input voltage from sensor to PCM switches from low (.3 volts) to high (5 volts). As step returns away from sensor, input voltage switches back to low (.3 volts). The paper spacer is not used on Viper. Don't use at all, it plugs up oil pickup screen.