Testing Notes

Do not depart from the instructions provided here. Anyone who departs from the following instructions must first establish that he may compromise his personal safety and the vehicle integrity by his choice of methods, tools or parts.
The Integrated Vehicle Speed Control (IVSC) contains a self-test capability, consisting of a Key On, Engine Off (KOEO) and Key On, Engine Running (KOER) routine, which utilizes output error codes similar to EEC-IV subsystem ``Quick Tests.'' These ``Quick Tests'' then refer to Cruise Control/Testing and Inspection/Procedures/Pinpoint Test Charts for specific components diagnosis.
Testing for the IVSC is divided into two formats: the Quick Test and the Pinpoint Tests. The Quick Test is a functional IVSC system test. The Pinpoint Tests are specific component tests.
The Quick Test checks all IVSC components except the speed sensor, which must be checked separately. To test and service the IVSC system, perform the quick test first. If the system passes, check the speed sensor. If failure codes are generated, do only the Pinpoint Test specified by that particular failure code.
After all test and services have been completed, repeat the entire Quick Test to verify that the IVSC system operates properly.