EI System (High Data Rate - Contour & Mystique): Notes

NOTE: Start all diagnostics with QUICK TEST. See the appropriate TESTS W/CODES - EEC-IV (2.0L) article before entering this test. Following tests are dependent on results and service codes received during QUICK TEST.

NOTE: Use EI Diagnostic Cable (Rotunda 007-00059) to diagnose this system. Cable is equipped with additional circuits and components used to enhance and modify signals for testing purposes. If an aftermarket test cable is used or diagnosis is being performed using only a DVOM, become familiar with system wiring diagram and system operation.

NOTE: Refer to Figure-Figure when using pinpoint test procedures.