Diagnosis - AXOD: Description

The center of the EEC-IV system is the Electronic Control Assembly (ECA). The ECA receives information from various sensors and switches. Based on information received, the ECA generates output signals to control engine operation and transmission operation. The calibration module for EEC-IV system is mounted inside the ECA.

The EEC-IV system controls 3 major areas of engine operation: air/fuel mixture, ignition, and emission control. In addition, the system controls A/C compressor clutch operation, idle speed and transmission converter clutch operation. The ECA also controls the 2-3 shift. The system has self-diagnostic capabilities.