Visual Inspection

1. All diagnostic procedures must start with a thorough visual inspection of the vehicle.
2. Multipoint injection (MPI) system components are shown. Your visual inspection should start with electrical connections and harness condition at the components shown. Connectors and terminals must lock together. Look for terminals that are pushed out, loose or corroded. Make sure that wiring between each connector is not pinched behind any screws or bolts, or rubbing on drive belts, sharp metal, or exhaust systems.
3. Look for any added accessories that may affect the normal operation of the MPI system (alarms, kill switches, etc.).
4. All hose and vacuum line connections must be secure and hoses must not be pinched, collapsed, or cut.
5. On all vehicles with an airflow sensor, intake hoses and air cleaner housings must be in place and secure for normal operation and testing.
6. Vehicle battery must be fully charged.