Diagnostic Procedure
- Always use the same sequence when diagnosing driving or running problems on a vehicle equipped with EEC-IV. Make sure all NON-EEC problems are solved first. Loose wires, low compression, fouled plugs, etc. can cause problems that waste valuable servicing time.
- Connect test equipment (as described later in this article) to the engine. The location of the Self-Test connector varies with model. See Self-Test Connector Location in this article. The location will also be described in each engine testing section.