Systems Controlled:
- Air Management
- Exhaust Gas Recirculation (EGR)
- Electronic Spark Timing (EST)
- Fuel Control
- Idle Air Control (IAC)
- Electric Fuel Pump
- Transmission Converter Clutch (TCC)
- Downshift Control or Manual
- Transmission Shift Light
- Air Conditioning
- Diagnostics
- "Service Engine Soon" Light
- Diagnostic Terminal (ALDL)
- Data Output (ALDL)
- Electronic Spark Control (ESC)