Circuit Description

The distributor or Integrated Ignition Assembly (IIA) contains 2 pick-up coils, G and NE signal coils. The G signal pick-up coil sends the ECM standard crankshaft angle. The NE signal pick-up coil sends the ECM crankshaft angle and engine speed. Code is set when there is no NE signal to ECM within 2 seconds after cranking and/or no G signal to ECM for 3 seconds or more with engine speed of 600-4000 RPM. Possible causes are:

• G and NE open or short circuit.
• Distributor pick-up coil(s).
• STA open or short circuit.
• ECM.