Without Scantool

1. Check wiring to and from MPI control module. Make sure battery and ground connections of the MPI are in good operating condition. Use wiring diagram if needed, see DIAGRAMS.
2. If wiring is in order, erase fault codes and start engine. Stop engine and recheck fault codes.
3. If fault code 1-1-2 reappears, replace MPI control module.
4. After all repairs are done, erase fault codes and test drive vehicle. Stop engine and recheck fault codes.