Engine Control System

Part 1 of 3

Part 2 of 3

Part 3 of 3

NOTE:
1. Do not replace the Engine Control Module (ECM) until a thorough terminal check reveals there are no short/open circuits.
2. After the ECM detects a malfunction, a diagnostic trouble code is recorded when the engine is next started and the same malfunction is re-detected. However, for items marked with a "*", the diagnostic trouble code is recorded on the first detection of the malfunction.
3. O2 : Heated oxygen sensor
4. Sensor 1 indicates sensors which are mounted closest to the engine.
5. Sensor 2 indicates sensors which are mounted next-closest to the engine.