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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 96 (Engine Controls - System/Component Tests - 3.8L) >> Engine Sensors & Switches >> Camshaft Position (CMP) Sensor

Camshaft Position (CMP) Sensor

WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, 1995 Dodge Caravan, and 1995 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
  1. Sensor is located in timing cover near left side of water pump. Connect lab type oscilloscope to sensor output wire at CMP sensor connector (Tan/Yellow wire).
  2. With CMP sensor connector connected, start or crank engine. The output voltage of a good CMP sensor should switch between about 5.0 volts to about 0.3 volt. See Fig 1 . Replace sensor as necessary.
Fig 1: Identifying Good CMP & CKP Sensor Waveforms (All Models)
G95B27020Courtesy of CHRYSLER CORP.
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